Hiệu suất của Máy lạnh và Lò sưởi?

Các kỹ sư cho mình hỏi, nếu dùng chức năng sưởi ấm thì Máy lạnh đảo chiều và Lò sưởi cái nào cho hiệu suất tốt hơn. Ít tốn điện hơn?

Máy lạnh.

Efficiency of inverter vs. resistance heater

The 'Efficiency' of air source heat pumps (inverter) is measured by the Coefficient of performance (COP). In simple terms, a COP of 3 means the heat pump produces 3 units of heat energy for every 1 unit of electricity it consumes. In mild weather, the COP of an air source heat pump can be up to 4. However, on a very cold winter day, it takes more work to move the same amount of heat indoors than on a mild day. The heat pump's performance is limited by the Carnot cycle and will approach 1.0 as the outdoor-to-indoor temperature difference increases at around −18 °C (0 °F) outdoor temperature for air source heat pumps. However, heat pump construction methods that enable use of carbon dioxide refrigerant extend the figure downward to -30 °C (-22 °F). A Geothermal heat pump will have less change in COP as the ground temperature from which they extract heat is more constant than outdoor air temperature.
Seasonally adjusted heating and cooling efficiencies are given by the heating seasonal performance factor (HSPF) and seasonal energy efficiency ratio (SEER) respectively.
The efficiency of a heat pump can be significantly affected by its original design. Many air source heat pumps began life as air con***ioning units, designed for summer temperatures. In designing a heat pump as a heat pump from inception great COPs and life cycles can be attained. The principal changes are in the scale and type of compressor and evaporator to allow COP of greater than 2 even down to -20°C.
Advantages and disadvantages

Advantages

Typically draws approximately 1/3 to 1/4 of the electricity of a standard resistance heater for the same amount of heating, reducing utility bills.[

Máy lạnh đảo chiều chuyển từ ĐIỆN ==> CƠ ==> NHIỆT đương nhiên mất thêm một lần giảm hiệu suất so với Lò sưởi chuyển năng lượng từ ĐIỆN ==> NHIỆT.