A battery heat pump is a system that combines a heat pump with a thermal storage unit, typically a large water tank, to improve energy efficiency and reduce electricity costs.
How Battery Heat Pumps Work
The main concept behind a battery heat pump is to leverage time-of-use electricity pricing, as mentioned in the reference:
- Off-Peak Operation: The heat pump operates primarily during periods when electricity is cheap, often at night.
- Thermal Storage: The heat generated by the heat pump is stored in a large water tank, acting as a "thermal battery."
- Heat Distribution: The stored hot water is then used to provide both domestic hot water and space heating via an air exchanger. This allows for heating even when electricity prices are high.
Benefits of Battery Heat Pumps
- Cost Savings: By running the heat pump during off-peak hours, homeowners can significantly reduce their electricity bills.
- Energy Efficiency: Storing heat allows for more efficient use of electricity compared to directly heating water or air.
- Grid Stability: Shifting electricity demand to off-peak hours helps to balance the electricity grid and reduce strain during peak demand.
Components of a Battery Heat Pump System
| Component | Description |
|---|---|
| Heat Pump | Extracts heat from the outside air or ground and transfers it to the water. |
| Water Tank | Stores the heated water, acting as a thermal battery. |
| Air Exchanger | Transfers heat from the water to the air for space heating. |
| Control System | Manages the operation of the heat pump and heat distribution. |
