Cold Climate Heat Pumps Using Tandem Compressors采用串联式压缩机的寒冷气候热泵 In cold climate zones, e.g. ASHRAE climate regions IV and V, conventional electric air-source heat pumps (ASHP) do not work well, due to high compressor discharge temperatures, large pressure ratios and inadequate he...
Most commonly, heat pumps draw heat from the air or from the ground. Some air-source heat pumps do not work as well when temperatures fall below around −5°C(23°F). 展开 关键词:Work Refrigerator Thermal condensation Flash 出版时间: 2010-09-14 ...
Learn more about heat pumps, an exciting technology that lets you heat and cool your home sustainably instead of HVAC.
True to its name, ductless heat pumps do not require any ductwork to heat and cool your home. For homes that do have ductwork, poorly sealed or poorly insulated ducts that leak heated air into unheated spaces can cost homeowners hundreds of dollars every year on their energy bills, according...
Heat Pumps -- How Do They Work?PRIMEAU, JOELASHRAE Journal
Technically, heat pumps can work just about everywhere. Thanks to technological breakthroughs over the past decade, heat pumps can nowheat homes even when outdoor temperatures reach subzero. The appliances, for now, just don’t work as efficiently in such cold temperatures as they do in milder...
Heat pumps are an electrified heating and cooling technology with many financial and environmental benefits.
Air-source heat pumps work best when temperatures range between 23°F to 77°F. Any colder than this, and the heat pump may not operate as efficiently, requiring extra energy to function, such as working in tandem with an alternative heating system. However, the plus side to air-source he...
Here’s a step-by-step process of how heat pumps work: Heat could be sourced from the air outside or warmth from the ground. This is blown or pumped over the heat exchange surface of the exterior part of the heat pump. This heat is warm enough to cause the refrigerant liquid in the...
Do heat pumps work well in our climate? Yes. Klickitat County has nearly ideal climactic conditions for maximum efficiency and performance. When it is 47 degree outside, air-to-air heat pumps extract three units of energy for each unit of energy they consume. At an outside temperature of ...