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641 lines
15 KiB
Plaintext
641 lines
15 KiB
Plaintext
{
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"cells": [
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{
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"cell_type": "code",
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"execution_count": 35,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"The autoreload extension is already loaded. To reload it, use:\n",
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" %reload_ext autoreload\n"
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]
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}
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],
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"source": [
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"from notepad import WaterStorage\n",
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"\n",
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"%load_ext autoreload\n",
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"%autoreload 2"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"Developments steps to take: \n",
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"* Test the WaterStorage\n",
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"* Create some example for WaterStorage\n",
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"* Define interactions WaterStorage <> Heatpump\n",
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"* Create some example for WaterStorage + Heatpump\n",
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"* Develop the interactions --> Create working examples"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## WaterStorage"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"Functional requirements for the WaterStorage:\n",
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"* Given: \n",
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" * Size / capacity\n",
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" * Temperature in/out\n",
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" * Max power\n",
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" * Roundtripp efficiency\n",
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"* It should be able to execute commands, like: \n",
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" * Charge\n",
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" * Discharge\n",
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" * Whats the storage level? \n",
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" * Assign financials \n",
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" * Take into account storage losses (time dependent)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 36,
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"metadata": {},
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"outputs": [],
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"source": [
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"waterstorage = WaterStorage(\n",
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" name='MyStorage',\n",
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" max_power=10,\n",
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" min_power=-10,\n",
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" roundtrip_eff=0.90,\n",
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" energy_density = 50 * 10e-3,\n",
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" volume = 500,\n",
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" lifetime = 25,\n",
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" temperature = 368, #K\n",
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" min_storagelevel = 5,\n",
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" max_storagelevel = 23\n",
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" \n",
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")"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 37,
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"metadata": {},
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"outputs": [],
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"source": [
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"waterstorage.set_freq('15T')"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 38,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"15"
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]
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},
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"execution_count": 38,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"waterstorage.set_storagelevel(15)\n",
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"waterstorage.storagelevel"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 39,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"32.0"
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]
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},
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"execution_count": 39,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"waterstorage.charging_power_limit"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 40,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"32.0"
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]
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},
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"execution_count": 40,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"waterstorage.charge(100)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 41,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"23"
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]
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},
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"execution_count": 41,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"waterstorage.storagelevel"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 42,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"0.0"
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]
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},
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"execution_count": 42,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"waterstorage.charge(100)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 43,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"50.0"
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]
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},
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"execution_count": 43,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"waterstorage.discharge(50)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"def test_heatpump_and_waterstorage_system(Tsink, Tsource, process_demand_MW, e_price, waterstorage_level):\n",
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" \"\"\"\n",
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" 1. Follow a certain logic based on given price:\n",
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" - If price is low --> Heatpump at full power, and charge the heatbuffer\n",
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" - If price is high --> Discharge the heat buffer, and increase Tsource, which will increase COP\n",
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" 2. Above logic should adhere to a couple of constraints:\n",
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" - Storage levels\n",
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" - Capacity of the heat pump \n",
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" - Process demand\n",
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" - ....\n",
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" 3. This function should contain: \n",
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" - Heat pump \n",
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" - Water storage\n",
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" - Interactions / logic between them\n",
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" 4. Output of the function:\n",
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" - Power of the heatpump \n",
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" - \"New\" water storage level\n",
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" \"\"\"\n",
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" waterstorage.storage_level = waterstorage_level\n",
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" \n",
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" if price > 100:\n",
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" hp_load = heatpump.set_load('max')\n",
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" energy_to_storage = hp_load - demand\n",
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" waterstorage.charge(energy_to_storage)\n",
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" waterstorage_level = waterstorage.storage_level\n",
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" if price < 50:\n",
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" energy_from_storage = waterstorage.discharge('max')\n",
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" waterstorage_level = waterstorage.storage_level\n",
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" new_Tsource = Tsource_calc(Tsource, energy_from_storage)\n",
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" new_COP = cop_calc(new_Tsource, Tsink) \n",
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" hp_load = heatpump.set_load(demand, new_COP)\n",
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" return hp_load, waterstorage_level\n",
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" \n",
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"hp_load, waterstorage_level = test_heatpump_waterstorage_system(\n",
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" Tsink = 373+100, \n",
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" Tsoucre = 373+50, \n",
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" process_demand = 20, \n",
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" e_price = 150, \n",
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" waterstorage_level = 0.50\n",
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")\n",
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"\n",
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"# Expected behaviour: \n",
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" # hp_heat_output == demand\n",
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" # hp source temparture > than before\n",
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" # waterstorage_level < than before\n",
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" # hp cop > higher than before\n",
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"hp_load, waterstorage_level"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": []
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},
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{
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"cell_type": "code",
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"execution_count": 44,
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"metadata": {},
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"outputs": [],
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"source": [
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"Tsink = 413 #K\n",
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"Tsource = 333 #K\n",
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"Tref = 273 #K\n",
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"hp_capacity = 31 #MW\n",
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"demand = 25 #MW\n",
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"Cp = 4190 #J/kgK\n",
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"MW_to_J_per_s = 1000_000\n",
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"hp_capacity *= MW_to_J_per_s\n",
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"demand *= MW_to_J_per_s"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 45,
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"metadata": {
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"tags": []
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},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"52.84691442209342"
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]
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},
|
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"execution_count": 45,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"def hp_mass_flow (hp_capacity, Tsink, Tref, Cp):\n",
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" return hp_capacity /(Cp*(Tsink - Tref)) \n",
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"hp_mass_flow (31_000_000, 413, 273, 4190)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 46,
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"metadata": {},
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|
"outputs": [
|
|
{
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|
"data": {
|
|
"text/plain": [
|
|
"42.61847937265598"
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|
]
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},
|
|
"execution_count": 46,
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|
"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"def process_mass_flow (demand, Tsink, Tref, Cp):\n",
|
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" return demand /(Cp*(Tsink - Tref)) \n",
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"process_mass_flow (25_000_000, 413, 273, 4190)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 47,
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"metadata": {},
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"outputs": [
|
|
{
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|
"data": {
|
|
"text/plain": [
|
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"5.866"
|
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]
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},
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"execution_count": 47,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"charge_mass_flow = 52 - 42 #can be written as a functiality\n",
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"charged_heat = (charge_mass_flow * Cp * (Tsink - Tref)) / MW_to_J_per_s\n",
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"charged_heat"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 48,
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"metadata": {},
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"outputs": [],
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"source": [
|
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"# charge_mass_flow = 52 - 42 #should be written as function\n",
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"# def charge_heat (charge_mass_flow, Cp, Tsink, Tref, MW_to_J_per_s):\n",
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"# return (charge_mass_flow * Cp * (Tsink - Tref)) / MW_to_J_per_s\n",
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"# charge_heat (10, 4190, 413, 273, 1000_000)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 49,
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"metadata": {},
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"outputs": [],
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"source": [
|
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"# def source_mass_flow (demand, Tsource, Tref, Cp):\n",
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"# return demand /(Cp*(Tsource - Tref)) \n",
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"# source_mass_flow (25_000_000, 333, 273, 4190) "
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]
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},
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{
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"cell_type": "code",
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"execution_count": 50,
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"metadata": {},
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"outputs": [
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{
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"data": {
|
|
"text/plain": [
|
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"2.514"
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|
]
|
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},
|
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"execution_count": 50,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"# efficiency = 0.7\n",
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"Tstorage = 95 + 273\n",
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"discharge_mass_flow = charge_mass_flow\n",
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"discharged_heat = (discharge_mass_flow * Cp * (Tsource - Tref)) / MW_to_J_per_s\n",
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"discharged_heat\n",
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"# mass flows need to be balanced not energy\n",
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"#This energy loss is because storage is charged with high temperature and discharged with low.\n",
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"# heat loss can be neglected assuming that storage is well-insulated."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 56,
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"metadata": {},
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"outputs": [
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|
{
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|
"data": {
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|
"text/plain": [
|
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"66.73076923076923"
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]
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},
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"execution_count": 56,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"# Tsource_new = (discharge_mass_flow * T_discharge + Tsource * source_mass_flow) / (discharge_mass_flow + source_mass_flow)\n",
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"Tsource_new = (10 * 95 + 60*42) / (10+42)\n",
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"Tsource_new\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 57,
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"metadata": {},
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"outputs": [
|
|
{
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|
"data": {
|
|
"text/plain": [
|
|
"5.636745406824146"
|
|
]
|
|
},
|
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"execution_count": 57,
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|
"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"Tsource_new +=273\n",
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"COP_new = Tsink / (Tsink - Tsource_new)\n",
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"COP_new"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 53,
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"metadata": {},
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"outputs": [
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{
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"data": {
|
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"text/plain": [
|
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"dict_keys(['name', 'id', 'max_power', 'min_power', 'modes', 'roundtrip_eff', 'volume', 'lifetime', 'temperature', 'energy_density', 'max_storage_capacity', 'max_storagelevel', 'min_storagelevel', 'freq', 'time_factor', 'storagelevel'])"
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]
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},
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|
"execution_count": 53,
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"metadata": {},
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"output_type": "execute_result"
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|
}
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|
],
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"source": [
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"waterstorage.__dict__.keys()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 128,
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"metadata": {},
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"outputs": [
|
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{
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"data": {
|
|
"text/plain": [
|
|
"23.2"
|
|
]
|
|
},
|
|
"execution_count": 128,
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|
"metadata": {},
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"output_type": "execute_result"
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|
}
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],
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"source": [
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"# max_storage_capacity is in MWh and it should inherit MWh to MW conversion from Assets\n",
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"# MW = MWh / self.time_factor\n",
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"waterstorage.max_storage_capacity"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 129,
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"metadata": {},
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"outputs": [],
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"source": [
|
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"# chargelevel = self.chargelevel\n",
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"# max_charging = chargelevel - self.max_chargelevel\n",
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"# max_discharging = chargelevel - self.min_chargelevel"
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]
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},
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{
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"cell_type": "code",
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|
"execution_count": 130,
|
|
"metadata": {},
|
|
"outputs": [
|
|
{
|
|
"data": {
|
|
"text/plain": [
|
|
"18.2"
|
|
]
|
|
},
|
|
"execution_count": 130,
|
|
"metadata": {},
|
|
"output_type": "execute_result"
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|
}
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|
],
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"source": [
|
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"# Funtionality: Set the storage level\n",
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"waterstorage.storagelevel = 15\n",
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"waterstorage.max_storagelevel = 23.2\n",
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"waterstorage.min_storagelevel = 5\n",
|
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"# waterstorage.max_charging = waterstorage.max_storagelevel - waterstorage.storagelevel\n",
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"# waterstorage.max_discharging = waterstorage.max_storagelevel - waterstorage.min_storagelevel\n",
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"waterstorage.max_discharging"
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]
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},
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|
{
|
|
"cell_type": "code",
|
|
"execution_count": 131,
|
|
"metadata": {},
|
|
"outputs": [
|
|
{
|
|
"data": {
|
|
"text/plain": [
|
|
"20"
|
|
]
|
|
},
|
|
"execution_count": 131,
|
|
"metadata": {},
|
|
"output_type": "execute_result"
|
|
}
|
|
],
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"source": [
|
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"# Functionality: Charge the storage\n",
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"waterstorage.storage_level = 15\n",
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"waterstorage.charge = 5\n",
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"waterstorage.storage_level += waterstorage.charge\n",
|
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"waterstorage.storage_level"
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]
|
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},
|
|
{
|
|
"cell_type": "code",
|
|
"execution_count": 132,
|
|
"metadata": {},
|
|
"outputs": [
|
|
{
|
|
"data": {
|
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"text/plain": [
|
|
"11"
|
|
]
|
|
},
|
|
"execution_count": 132,
|
|
"metadata": {},
|
|
"output_type": "execute_result"
|
|
}
|
|
],
|
|
"source": [
|
|
"# Functionality: Discharge the storage\n",
|
|
"waterstorage.storage_level = 15\n",
|
|
"waterstorage.discharge = 4\n",
|
|
"waterstorage.storage_level -= waterstorage.discharge\n",
|
|
"waterstorage.storage_level"
|
|
]
|
|
},
|
|
{
|
|
"cell_type": "markdown",
|
|
"metadata": {},
|
|
"source": [
|
|
"## WaterStorage + Heatpump system"
|
|
]
|
|
},
|
|
{
|
|
"cell_type": "markdown",
|
|
"metadata": {},
|
|
"source": [
|
|
"Functional requirements for the WaterStorage + Heatpump system:\n",
|
|
"1. Goal (Funtional requirements): \n",
|
|
" * Given (context)\n",
|
|
" * price (forecast), \n",
|
|
" * source and sink temperature (provided by process), \n",
|
|
" * process heat demand, \n",
|
|
" * storage level of the water storage (temperature level)\n",
|
|
"* I want to know:\n",
|
|
" * Heat output from the heatpump (in MW)\n",
|
|
" * New storage level / temperature level\n",
|
|
" * Electricity consumption of the heatpump"
|
|
]
|
|
},
|
|
{
|
|
"cell_type": "code",
|
|
"execution_count": null,
|
|
"metadata": {},
|
|
"outputs": [],
|
|
"source": []
|
|
}
|
|
],
|
|
"metadata": {
|
|
"kernelspec": {
|
|
"display_name": "Python 3 (ipykernel)",
|
|
"language": "python",
|
|
"name": "python3"
|
|
},
|
|
"language_info": {
|
|
"codemirror_mode": {
|
|
"name": "ipython",
|
|
"version": 3
|
|
},
|
|
"file_extension": ".py",
|
|
"mimetype": "text/x-python",
|
|
"name": "python",
|
|
"nbconvert_exporter": "python",
|
|
"pygments_lexer": "ipython3",
|
|
"version": "3.9.5"
|
|
},
|
|
"widgets": {
|
|
"application/vnd.jupyter.widget-state+json": {
|
|
"state": {},
|
|
"version_major": 2,
|
|
"version_minor": 0
|
|
}
|
|
}
|
|
},
|
|
"nbformat": 4,
|
|
"nbformat_minor": 4
|
|
}
|