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Benefits of heat pump systems
Heat pumps are a technology based on the refrigeration cycle that met around 10% of global space heating demand in 2021. Going forward, government energy security and climate targets are expected to make heat pumps the primary means of decarbonizing space and water heating. Especially in Europe, where there is great potential to reduce reliance on natural gas, global sales of heat pumps increased by around 15% in 2021.
Heat pumps offer the benefits of lowering costs for consumers, reducing greenhouse gas emissions, improving air quality and creating new jobs as manufacturing and installation expands.
What is a heat pump system?
Heat pumps are efficient and versatile heating and cooling systems that use reversing valves to redirect the flow of refrigerant to provide heating or cooling.
In heating mode, the refrigerant absorbs heat from the outside air and releases it through the condenser coil inside the home to heat the room. In cooling mode, the refrigerant transfers heat from the room to the refrigerant and releases it through the external coil to cool the room.
The main components of a heat pump are:
Evaporation: The refrigerant absorbs heat and becomes a gas.
Compression: The gaseous refrigerant is compressed, increasing its temperature and pressure.
Condensation: When a hot gas turns back into a liquid it releases heat.
Expansion: The refrigerant passes through the expansion valve, reducing its pressure and temperature.
This allows the heat pump to efficiently transfer heat and regulate the temperature in your home.
Types of heat pumps
Air-to-air heat pump: A system that transfers heat between outdoor air and indoor air. Widely used for residential heating and cooling, it is easy to install and suitable for moderate climates.
Air-to-water heat pumps: transfer heat from the outside air to water for use in radiators, underfloor heating or domestic hot water. They are highly efficient and can be combined with existing heating systems.
Ground Source Heat Pumps (GSHP): Transfer heat between the ground and a building, using the stable earth temperature to provide heating, cooling and hot water. They are highly efficient and help reduce energy costs.
Water source heat pumps: use bodies of water such as lakes, ponds, wells, etc. as a heat source or heat sink. They are highly efficient and can heat and cool, but require a suitable water source at the installation site.
Hybrid heat pump: A combination of a heat pump and a traditional heating system such as a gas boiler. It offers efficiency and flexibility, allowing you to choose the most efficient way to operate at any given time.
lastly
The following document from ON Semiconductor introduces many of the products that ON Semiconductor can offer for heat pump systems, including SiC products and IPM products. Please log in after registering for ON Semiconductor's My ON to check them out.
On Semiconductor data: BRD8203
This article is a Japanese translation, reference, and summary of the BRD8203 from ONSemiconductor's System Solution Guide mentioned above.
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