Domestic heat pump
------------------

<img src="../../_static/HeatPump.png" alt="Alt text" width="50" style="float: left; margin-right: 10px;">

**Technology ID: DOMESTIC_HEAT_PUMP**



**Input energy interface, with default energy:**

 - FUEL_CONSUMPTION: gas
 - CONSUMPTION: electricity

**Output energy interface, with default energy:**

 - CO2: co2

**Technology behaviors:**

 - GAS_BACKUP_HEATER
 - MUST_RUN

**Technology parameters:**

| ID | Label | Unit | Behaviors | Description  |
| --- | --- | --- | --- | --- |
| BIVALENT_TEMP | Bivalent temperature |  |  | The temperature below which the back-up heater has to supplement the heat pump is called the bivalent temperature |
| TEMPERATURE | Heat source temperature |  |  | Heat source temperature |
| COP | Coefficient of performance | x:temperature; y:efficiency |  | Coefficient of performance |
| BACKUP_HEATER_YIELD | Backup heater efficiency |  |  | Backup heater efficiency |
| FUEL_CO2_CONTENT | Fuel CO2 emissions | t/MW.h HHV | GAS_BACKUP_HEATER | Yield between the fuel consumption and the CO2 emissions |
| DISCHARGE_TIME | Discharge time | h | not MUST_RUN | Discharge time |
| STORAGE_COST | Storage cost | Euro/MW.h/h | not MUST_RUN | Cost associated with storage. Non-zero storage cost prevents equaly-optimal \ |
| LOSS_RATE | Loss rate | %/h | not MUST_RUN | Storage loss rate |
| HEATING_DEMAND | Heating demand | MW.h |  | Heating demand |
| BIVALENT_TEMP_PMAX | HP capacity | MW |  | HP capacity above bivalent temperature |
|  |

**Model code:**

``` python
stateON = AssetState('ON')
heatPumpCapacity = buildHPcapacity(asset, stateON)
createHeatPumpConstraints(asset, stateON, heatPumpCapacity)
finalize(stateON)

```