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    Can the external unit of ordinary air conditioner be changed into air energy heat pump? Experts warn you of danger

    Author: Lucy, source: Zhengxu air energy, published on March 18, 2020, click: 2201

              People who know a little about air energy heat pump know that the components and structure of heat pump are similar to those of ordinary air conditioner. Many old air-conditioning users want to use the external unit for secondary use. Is it reliable to transform the external unit of ordinary air conditioner into air energy heat pump? Is security guaranteed? Zheng Xu invited the director of Engineering Department, who has many years of experience in heat pump engineering installation, to answer for you.


     Can the external unit of ordinary air conditioner be changed into air energy heat pump?


              First of all, the principle and structure of air conditioning external unit and air energy heat pump should be clarified. Air conditioning is mostly used for refrigeration, while air energy heat pump is mostly used for heating and hot water. The components are compressors, condensers and evaporators. At the same time, they are the refrigerant circulation system composed of reverse Carnot principle. The heat is converted from indoor to outdoor, which can be said to be the same source.

              Air energy heat pump is mainly hot water bath and heating two major functions, the modified air conditioning external function to meet?

              From the point of view of heating alone, most of the external units of household air conditioners are between 1-2 HP, which is far from the 3-HP units with the lowest heating capacity. The average heating capacity of the three heat pumps on the market is 8kw, which is 4 times of the air conditioning power. It is obvious that the so-called air energy heat pump, which is refitted from the external air conditioner, is difficult to guarantee sufficient heating capacity even in the south.

              What about the transformation of air conditioning external unit into air energy heat pump water heater with less heat demand?

              As the saying goes, laymen watch the excitement, and experts look at the door. The same is true for air energy heat pump industry, which can not be called air energy heat pump simply by replacing external parts of air conditioner. From the professional point of view, the difference between the two is not small. The air conditioning uses R22 refrigerant which destroys the ozone layer, while the air energy heat pump uses the environmentally friendly refrigerant such as R410A or R407C, while the refrigerant such as R410A has a small critical pressure and is easier to liquefy and release heat. At the same time, the boiling point is low and the gasification latent heat is large, which is conducive to heat absorption.

              Secondly, the evaporator of air energy heat pump adopts aluminum foil structure with stronger hydrophilicity, so the heat exchange efficiency is stronger than that of air conditioner, otherwise, air conditioner cannot resist the low temperature below zero in North China. What's more, the air energy heat pump uses a compressor made of a stronger alloy, a capillary tube for air conditioning, and an electronic expansion valve for the heat pump.

              For example, the safety and stability of the air-conditioning external unit transformed into air energy heat pump is questioned. I don't know you're right 6.3 explosion accident of air conditioner in Yancheng, Jiangsu Province Do you have the impression that in 2017, a head of household in Yiheyuan community, Yancheng City, Jiangsu Province, when installing air conditioning, suddenly exploded, killing the man on the spot. Even if the regular air-conditioning installation is unreasonable, accidents also occur. Manufacturer's regular products are still like this, let alone selfishly refit air conditioning external unit to become air energy heat pump?

              Sincerely suggest that qualified users purchase regular ones Air energy heat pump The safety and stability of the heat pump can be guaranteed only after the refrigerant test and safety test of the manufacturer. Do not refit the external air conditioner without permission.

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