The shortcomings of air energy heat pump heating equipment, and how to avoid them？

With the rapid development of air energy equipment, air energy heat pump heating is gradually known to people. Air energy heat pump heating has the characteristics of high efficiency, energy saving, environmental protection, safety, and stability, and occupies a place in the heating market. Air energy heat pump heating has so my advantages but also has some disadvantages. How can we avoid these disadvantages?

Disadvantage analysis of air energy heat pump heating

Ambient temperature limit

As we all know, the principle of air energy heat pump heating is similar to that of air conditioners. They are all heat carriers. In winter, the ambient temperature is relatively low, and the heat in the air is relatively small, and it is affected by winter heating and defrosting. When the outdoor temperature drops to -5°C, the heating capacity of the heat pump drops rapidly, resulting in higher electricity bills and poor indoor heating effect; when the outdoor temperature drops to -10°C, the heat pump’s defrosting capacity is even greater. If the water in the pipeline is not drained in time, the pipeline and equipment may be damaged by freezing. Therefore, many people think that air energy heat pumps are not suitable for places with a low temperature in winter, and it is more suitable for places with high winter temperature in the south.

High installation cost

The indoor terminal equipment of the air energy heat pump includes fan coils, floor heating coils, and radiators, which can be used for cooling in summer and heating in winter. However, it is very expensive to use in places that only need cooling or heating. What’s more, the price of the heat pump host is much higher than that of ordinary central air conditioners. The end of the cooling and heating is installed indoors, compared with the cost of installation. It will be much higher than ordinary refrigeration and heating equipment, which is not cost-effective.

The device is huge

The air energy heat pump needs to install the heat pump host and the water tank at the same time, so it needs to occupy a very wide installation space, especially the flat apartment type such as the elevator apartment, which occupies a lot of indoor space. Not worth it.

High energy consumption

Because the air source heat pump has a principle similar to that of an air conditioner, we all know that the heating efficiency of the air conditioner is not good in the low-temperature environment in winter. The use of electric auxiliary heating makes energy consumption very high. I am worried about the high electricity bill every month. The floor heating is turned on for 24 hours. Unable to afford the operating costs of the air energy heat pump.

Easy to leak

The air energy heat pump adopts water circulation as a whole, so after the water pipe enters the room, if the connection is not good, or the quality of the pipe material is poor, it is easy to cause indoor water leakage, and then cause the ceiling to be moldy and damaged, and the maintenance has to destroy the ceiling. curtain hole.

How to avoid these shortcomings?
for environmental issues

If the heating efficiency of the air energy heat pump is not high due to the low ambient temperature, it may be a problem in the selection of heat pump equipment. The air source heat pump is divided into normal temperature type and low-temperature type. The ambient temperature used by the normal temperature type air source heat pump is indeed only above -5°C. The temperature below this is similar to that of ordinary central air conditioners. It suffers from defrosting and heat conversion efficiency. There is a shutdown problem, but the low-temperature air-energy heat pump is different. It adopts the jet enthalpy increase technology and can continue to absorb the waste heat in the air at a temperature of -25°C (cold air also contains heat). Some ultra-low temperature air-energy heat pumps It can also be used without attenuation at a temperature of -30°C. Of course, the main engine of the low-temperature air source heat pump is more expensive, but it can be used in winter in most parts of our country. Therefore, the normal-temperature air-energy heat pump is suitable for places with high winter temperatures in the south, while the low-temperature air-energy heat pump is suitable for places with low winter temperatures in the north. Choose according to the region, and don’t make a wrong choice.

Questions about installation costs

Anyone who knows about air source heat pumps knows that the price of the air source heat pump host is higher than that of ordinary central air conditioners, but the price of the fan coil unit is much lower than that of the fluorine machine, and the price of the water pipes used in the installation materials is also lower than that of the central air conditioner. brass. Except for the equipment, the cost and installation cost of the fan coil unit are lower than that of ordinary fluorine machine air conditioners, and the air energy heat pump heating has the ability to cool and heat, so it is no longer necessary to install a gas wall-hung boiler. If the installation is the same, the cost of floor heating and heating equipment can be saved. Compared with users who install floor heating and central air conditioning at the same time, the price of air energy heat pumps is the same as that of independently installing floor heating and central air conditioning.

For equipment size issues

Not all air source heat pump equipment is very large. Villa-type equipment is relatively large, but there is a lot of installation space. Even if the air source heat pump equipment is large, it does not matter. For elevator apartments, it is really easy to occupy indoor space but to choose a good model, the host with a side air supply should not choose the host with a top air supply. The buffer water tank of the apartment type has only a few tens of liters of capacity, and the volume is not large. It can be directly hung on the wall. In addition, the water tank can also be changed to a structure without a water tank, and a hybrid core is used instead (to solve the problem of insufficient water flow and start-up of the system). The installation space occupied is smaller, and it can be placed directly on the heat pump main unit without occupying other space positions and can be accommodated by general air conditioner outdoor units.

For the problem of high energy consumption

The air energy heat pump is very energy-saving in design. Using frequency conversion technology and air jet enthalpy increasing technology, it can transport more than 3-4 times the heat under the same power consumption. The source of heat is absorbed from the air, and It is not directly heated by electricity. Moreover, floor heating is used indoors, and the required hot water supply is between 35°C and 55°C. The power consumption is not as much as that of direct electric heating water, and the energy consumption is only 1/3 of electric heating and only 1/2 of gas heating. The problem of energy consumption is also related to the way of use. The indoor temperature should not be set too high, and the energy consumption will increase by 10%-15% if the room temperature is higher than 1°C; do not open the window for use, which will cause a large loss of heat and increase the heat pump host. Of course, the electricity bill will also increase; when selecting air source heat pump equipment, it is necessary to choose the appropriate one according to the regional environment; when installing the indoor end, it is also necessary to configure enough heat, standardize the construction, and do a good job of heat preservation Measures: The long-term internal circulation of the air source heat pump will generate scale and biological slime, which will affect the heat dissipation in the room and require regular maintenance and maintenance to reduce heat loss. These factors all affect the power consumption of the air source heat pump.

For water leakage

The water system air conditioner in the past did have the risk of water leakage. Today’s air source heat pump also uses a water system, but the installation technology has been greatly improved. Home decoration basically does not use steel pipes as pipes, and PPR aluminum-plastic pipes can also be used. In order to reduce the hidden danger of water leakage (mature technology), there is also a new installation process, which uses a hydraulic balancer to connect the pipelines in a fixed area, and then install the water tray. There is no pipeline joint in other positions, and a whole pipe is used. The way of installation can reduce leakage points and will not affect the water flow of the pipeline. There are only 1 to 2 pipeline connection points for the flat-floor apartment. The pipeline uses PE-X aluminum-plastic composite pipe. The connection process adopts a sliding tight type to eliminate the hidden danger of water leakage The floor heating coil is a whole pipe, so there is less risk of water leakage). Taking a step back, even if there is a water leak in the ceiling, it will only wet the ceiling, which will cause economic loss without harming health, while the fluorine air conditioner leaking fluorine will be harmful to the body, not to mention the new installation process. It is less likely to wet the ceiling. Besides, there is not a lot of water in the air conditioner of the water system, and the loss caused is limited. The water replenishment valve in the system is almost always closed. If the water pressure is detected to be insufficient, the system will also shut down. , there is no need to worry about water leakage at all.

Summarize

Air energy heat pumps are not omnipotent, and there are also disadvantages, but many disadvantages can be avoided through the above methods, which can make the advantages better. When using air energy heat pumps for heating, you can enjoy comfort, energy saving, environmental protection, and longevity. Long-term, safe, and stable performance.

Written by: FUJIREJA GROUP
The Exporter and Manufacturer of Heaters since 2003
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