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What are the essential differences between low-temperature heat pumps and ordinary heat pumps?


In recent years, with the technological upgrading of the heat pump heating market, heat pumps have achieved unprecedented development. At present, heat pumps are divided into low-temperature and ordinary types, and the working principle is the same. However, in the low-temperature environment of -25 degrees Celsius, the heating effect of low-temperature heat pumps is superior. The main improvement is the technology of low-temperature heat pumps, designed specifically for extremely cold environments and able to operate normally in temperatures below -25 degrees Celsius. So next, let's compare the essential differences between the two methods?

What are the essential differences between low-temperature heat pumps and ordinary heat pumps?

1、 In terms of price

The price of low temperature heat pumps is about 30% higher than that of ordinary heat pumps, mainly due to the use of low-temperature compressors and evaporators as the main components, which can play an important role in low temperature performance.

2、 Defrosting technology

Ordinary heat pumps are relatively poor in defrosting. At around 0 ℃, defrosting usually takes 5-10 minutes, while low-temperature heat pumps only take 2-3 minutes to complete defrosting., In environments below -25 ℃, the unit is basically unable to defrost. And the low-temperature heat pump has the function of evaporator defrosting, and through the automatic drainage system of the unit, it can quickly defrost and drain, better ensuring the operation of the low-temperature heat pump, so the heating effect of the low-temperature heat pump is also more stable.

3、 Scope of Work

The low-temperature heat pump can be used normally above -25 ℃, and its strong heating capacity remains at -25 ℃ in winter because it uses a dedicated low-temperature compressor. When the ambient temperature of a regular heat pump is below -5 ℃, the energy efficiency ratio greatly decreases, and when it is below -10 ℃, the energy efficiency ratio is only about 1.1, which is almost energy-saving. So in winter, the heating effect often cannot be effectively met by ordinary heat pumps for household use.

4、 Energy efficiency differences

The heating efficiency of ultra-low temperature air source heat pumps in low-temperature environments is 30% higher than that of conventional heat pumps, and the comprehensive energy efficiency is around 1.8 at minus 20 degrees Celsius; Using a conventional heat pump at low temperatures is more energy-efficient than using a conventional heat pump, while a conventional heat pump produces very low heat in a low temperature environment of -5 degrees Celsius.

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