PVT Heat Pump System, Medium Heating Demand, 85 m2 House, 4 People
Basic unit:
N/A
Estimated Price:
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This kit describes a sustainable heating system to replace natural gas use for the provision of space heating and domestic hot water. It includes a brine/water heat pump system connected to PVT panels, a solar inverter and a hot water tank. The heat pump uses electricity and brine from the panels to transfer thermal energy in an efficient way to the heat sinks. In this way, the system delivers a green and sustainable solution for heating a house, reducing the house's carbon dioxide footprint and the rising costs of gas.
The solution is designed for a 4 people household in the Netherlands, with a 10,000kWh/year demand for space heating, distributed with more heating demand in the colder months, and a 2,600kWh/year domestic hot water demand. The heated useable area is 85 square meters and the average daily usage of domestic hot water is 160L.
The kit will not exactly meet the energy needs of a household; to efficiently size your system, it is essential to know the energy demand of the house. This can be done by checking the energy bills, making calculations using online programs or simulation software.
This kit was sized with the help of the GeoTSOL 2021 heat pump simulation program.
The kit doesn't include pipes, fittings or insulation materials. They might need to be purchased individually.
The domestic hot water consumption is assumed to be 40L per person and day. A 7.5kW brine/water heat pump was chosen to support the heating demand. 10x 380Wp PVT panels were selected, covering a total roof area of 20 square meters, facing south. If the available roof space is smaller, fewer panels can be installed and the electricity consumption of the heat pump can be partly covered by the grid.
7.5 kW ground source heat pump
A heat pump is a device that transfers thermal energy between spaces, in this case the heat is collected from the brine system to deliver it to the household.
10x 380Wp heat pump PVT solar panels
Photovoltaic thermal collectors (PVT) are hybrid solar photovoltaic thermal collectors that convert solar radiation into usable thermal and electric energy. PVT collectors combine PV cells which convert solar radiation into electricity, and solar thermal collectors, which transfer the unused excess heat from the PV module to a brine system. This technology can achieve a higher system efficiency than solar PV or solar thermal alone.
200L hot water tank
Storage tank for tap water; it acts as a heat accumulator and delivers hot water to your sink using its own heat exchanger during higher demands or with the already heated water coming from the heat pump.
4,2 kW solar inverter
The inverter delivers AC output power to the heat pump from the DC input power of the solar panels. Excess power will be sent to the grid.
Sources
https://mcscertified.com/wp-content/uploads/2021/10/Heat-Pump-Guide.pdf
https://consumer-nz-assets.s3.amazonaws.com/assets/2065/Good_practice_heat_pump_installation.pdf
Attribution
This solution was developed by Matei Sorescu.