Q When the air energy heat pump heating machine reaches below 0, will the heating performance be ver

Air energy heat pumps work according to the "reverse Carnot" principle, which works through the operation of a compressor system and absorbs heat from the air to produce hot water. The working principle sounds like a tall look, in fact, the air energy heat pump has the disadvantages of poor heating effect and large power consumption, and there is a certain amount of power consumption in the heating operation. In order to reveal the true face of air energy, let's take a closer look at the six major disadvantages of air energy heat pumps:

The biggest disadvantage of air energy heat pump is that it is not cold tolerant and has poor heating effect. The main energy source of air energy heat pump comes from the heat in the air, but the outdoor temperature is very low in winter, and the heat in the air is very small, which leads to the low heating efficiency of the air energy heat pump, and the power consumption of the air energy heat pump will increase. If the outdoor temperature is low to below 15 degrees in winter, the air energy heat pump may be frozen due to cold, frost and other reasons, and cannot be heated normally, becoming an expensive and power-consuming decoration.

The acquisition cost of an air energy heat pump is too high. Rural areas have always been the main battlefield of coal-to-electricity conversion, and farmers' incomes are not high, and they are deterred by the high cost of air energy heat pumps. It is reported that even if it is a small air energy heat pump, it is more than 10,000 yuan, the purchase cost in the early stage is too high, and the air energy heat pump is not guaranteed in the later stage, resulting in a large amount of maintenance costs for rural coal-to-electricity users in the maintenance.

Air energy heat pumps are very troublesome to install or after-sales. Most of the air energy heat pumps are produced in the southern region, and the coal-to-electricity project is carried out in the northern region, the transportation distance of the air energy equipment is very long, the early installation service, the later door-to-door after-sales service also needs a long time to travel to operate, there is a time lag, it is not convenient, and the cost of installation and after-sales is a problem.

Air energy heat pumps are susceptible to damage. If there is a power outage at home in winter, the moisture left inside the air energy heat pump equipment will quickly freeze and freeze, which will cause damage such as freezing and cracking, pipe bursting, etc.; If it works and runs when the temperature is hot in summer, the compressor of the air energy heat pump is very easy to age, carbonize, and then burn out; If the scale is not cleaned regularly, the casing heat exchanger in the air energy heat pump will rupture, resulting in the scrapping of the entire unit.

Air energy heat pumps are large in size and noisy. The air energy heat pump not only needs to install the chassis outdoors, but also needs to install the host indoors, and the air energy heat pump needs to be placed on the ventilated ground or the roof of the building, which covers a very large area and is not suitable for the aesthetics of the home; The noise of the air energy heat pump is very loud, which will also affect the normal rest of the residents.

The air energy heat pump consumes too much electricity, and the defrosting problem is serious. The significant climatic characteristics of most northern regions are that the winter is long and cold, and the low temperature in winter means that there is very little heat in the air, and the air energy heat pump that relies on air heat as the operating power has to be heated all the time, resulting in the working time of the air energy heat pump is too long, and the power consumption is frightening; In addition, when the temperature is lower than minus 5, if the air energy heat pump is powered off for more than 1 hour, it is likely to cause the heat exchanger to freeze and crack, which requires the air energy heat pump to be energized and heated for a long time, resulting in the high cost of air energy electricity.

A: Ordinary air energy heat pump.

Generally, when the ambient temperature of the heating unit is lower than 0, the attenuation of heating performance is more obvious, and the temperature is even lower than that can not be heated; However, through the use of jet enthalpy technology, the ultra-low temperature unit of Zhongguang Oates can heat normally in a low temperature environment of -35, and the energy efficiency value is relatively high, which is 20% higher than that of ordinary inverter heat pumps.

1. The amount of refrigerant in the heat pump is insufficient

Refrigerant is the refrigerant often referred to in the industry, which is the key substance for air energy heat pump heating. Air energy heat pumps need to use refrigerant as an intermediate medium to continuously absorb heat in the air, and then release the heat in the water tank through pipeline circulation to complete heating.

With the increase of the use time of the air energy heat pump, the air energy heat pump will have refrigerant leakage, and once the amount of refrigerant is reduced, it will naturally cause the heating capacity of the equipment to decrease. This naturally causes the water heater outlet temperature to drop.

2. Excessive scale accumulation:

Scale build-up due to water quality is an important factor affecting the efficiency of air energy heating, especially for air energy water heaters with built-in coils. Due to the coil being immersed in water for a long time, the poor water quality of the air energy water heater with built-in coil leads to the accumulation of scale around the coil, which affects the heat transfer, resulting in the reduction of the heating efficiency of the water heater. In this case, the air energy equipment needs to be cleaned.

3. The equipment installation work is not done

Normally, air energy heat pumps need to be installed in locations with good air circulation, such as balconies, outdoor air conditioning stands, outdoor platforms, etc. These positions not only have strong air circulation, but also have the right air temperature, which is more conducive to heat absorption and heating of air energy heat pumps. Unreasonable installation location and non-standard installation operation will affect the heating efficiency of air energy water heaters.

4. Excessive dirt on the evaporator fins:

Air energy water heaters need to contact the air through the evaporator fins to absorb the heat energy in the air, while the evaporator fins are in direct contact with the outside world, and long-term use will be affected by the accumulation of dirt and lead to the decline of heat pump efficiency.

5. Use aging

The larger the contact area between the evaporator fin and the air, the better the overall heating effect of the equipment. However, in the process of long-term work, dust, hair and other substances in the air may cover the fins, affecting the heating of air energy.

It may be caused by insufficient refrigerant, or it may be that the condenser of the air source heat pump unit is too dirty, or there are foreign objects at the air outlet resulting in low heat exchange efficiency; Check for foreign objects in the vicinity. Treatment method: prescribe the right medicine, add refrigerant, clean the condenser, clean up the surrounding foreign objects, and keep the air flowing Jiuheng Technology.

First, see if the power of the air source heat pump unit is sufficient....

Second, how well the heating space needs to be insulated....

Third, during the heating process of water, scale will be generated, and the inside of the air source water pump pipeline should be cleaned regularly, otherwise the heating efficiency will be affected.

The influence of ambient temperature on the working efficiency of air source heat pump is still relatively large.

Taking the parameters of STS commercial air source heat pump-KLKQ-STS S-60 16(I)R3 as an example, it can be seen that when the ambient temperature is 7, the COP value is above; When the ambient temperature is about 0, the COP value is; Under the low temperature condition (-20), the COP value decreases to about the same. Energy efficient heating can still be guaranteed within this range.

It should be noted that in severe cold areas (the temperature is lower than -25), the COP value drops below 2, and the energy-saving rate will be further reduced.

The working efficiency of the air energy heat pump has a lot to do with the ambient temperature, which is determined by the working principle of the air energy heat pump. However, when the outdoor ambient temperature is low to a certain value, the heating efficiency of the air energy heat pump begins to decline significantly, and this value is not the same for different types of products.

When the ambient temperature is lower than 0, the attenuation of heating performance is more obvious, and the temperature is even lower than that of the beat. However, the ultra-low temperature unit can heat normally in a low temperature environment of -25 by using jet enthalpy increasing technology, and the energy efficiency value is relatively high.

Taking Beijing coal-to-power units as an example, the requirements must be low-temperature air energy heat pump products, and at -12, the heating COP is greater than -20 or more. In fact, the working capacity of the products of the winning bidders of the coal-to-electricity conversion is higher than this standard, and generally speaking, most of the heating COPs of the Suijing group of -12 air energy heat pump machines are above. This value is much higher than the heating energy efficiency that electric heating is not capable of.

Rising Hi-Tech EVI inverter cooling and heating heat pump unit can even reach COP in a low temperature environment of -12.

Summary. Hello, I am honored to serve you and find the following information for you: The energy efficiency ratio of air source heat pump for summer heating is due to the many changes in heat pumps, so the specific energy efficiency ratio is also different, generally between.

In addition, the energy efficiency ratio of a heat pump is also affected by factors such as ambient temperature, indoor temperature, fan type, etc., so in order to obtain an accurate energy efficiency ratio, it is also necessary to calculate it according to the actual environmental conditions.

Hello, I am honored to serve you and find the following information for you: The energy efficiency ratio of air source heat pump for summer heating is due to the many changes in heat pumps, so the specific energy efficiency ratio is also different, generally between. In addition, the energy efficiency ratio of a heat pump is also affected by factors such as ambient temperature, indoor temperature, fan type, etc., so in order to obtain an accurate energy efficiency ratio, it is also necessary to calculate it according to the actual environmental conditions.

Is it higher than in winter.

Yes, the energy efficiency of using the air source heat pump for heating in summer is higher than that in winter, because the air temperature is higher in summer and the potential temperature is lower, in this case, the operating temperature difference of the air source heat pump is larger, which improves the operating efficiency of the machine, thereby improving the energy efficiency ratio of heating in summer. In addition, the relatively high outdoor temperature in summer and the short turn-on time of the compressor are also conducive to improving the heating efficiency ratio of the air source heat pump.

Ultra-low temperature air energy heat pump.

More popular with the northern region.

This is because the ultra-low temperature air energy heat pump is at minus 25 degrees Celsius.

The air energy heat pump can generally be used normally in areas where the temperature is kept at 0 degrees Celsius and above in winter.

1.Compared with ordinary air energy heat pumps, ultra-low temperature air energy heat pump technology is more advanced, using a variety of new technologies, such as jet enthalpy increase technology, DC frequency conversion technology, intelligent defrosting technology, anti-freezing technology, etc., so that the heat pump can be used normally even in the extremely cold environment of minus 25 degrees Celsius.

2.Significant energy savings. Ultra-low temperature air energy heat pump can automatically change the operating frequency according to the external environment, and can also achieve the purpose of energy saving while heating, ultra-low temperature air energy heat pump is 1-2 times faster than ordinary air energy heat pump in both heating and refrigeration, low-frequency operation, while meeting the heating demand, it can also reduce the power consumption of the heat pump.

However, if you are a user who lives in the south or has a stable temperature of around 0 degrees Celsius during the winter season of the hungry man, it is enough to choose a regular air energy heat pump.

1.Hot and cold. This refers to the cooling capacity or heating capacity of the inlet air temperature and the inlet and outlet water temperature of the heat pump unit under the design conditions.

2.COP value. This is an important parameter to determine the performance of the heat pump, and the value directly affects the power consumption of the heat pump unit in use, so the unit with a high COP value should be selected as much as possible.

3.Noise. Noise is an important parameter to measure a heat pump unit, which is directly related to the impact of heat pump operation on the surrounding environment, and we should give priority to the unit with noise below 80db in engineering design selection.

4.Dimensions. Most of the heat pump units are placed on the outdoor roof, and there are clear requirements for the spacing between the equipment and the surrounding walls and the spacing between the equipment, so we should consider whether the selected equipment size meets the size requirements of the equipment layout when selecting the equipment.

Under the premise of the same performance, the smaller size of the unit should be preferred to reduce the footprint of the equipment.

5.Running weight. Since most of the heat pump units are arranged on the roof, the load-bearing capacity of the roof must be considered when selecting the type, and the load-bearing capacity of the roof should be enhanced if necessary, but we should give priority to the lighter weight unit when selecting the equipment.

Energy saving is irreplaceable, the average annual operating cost of air energy heat pump is only 1 4 of direct electric heating, 1 3 1 2 of oil and gas heating, and 1 of conventional solar energy.

The air-cooled chilling (hot) water unit is an air-conditioning unit that uses air as the cold (heat) source and water as the circulating medium to transmit energy. The unit is divided into single cooling type and heat pump type, of which the heat pump type unit is divided into standard type and low temperature type. The heat pump unit integrates cooling and heating functions, which can achieve cooling in summer and heating in winter, and one machine can be used for multiple purposes.

The low-temperature air-cooled unit is a low-carbon and energy-saving product, which adopts quasi-two-stage compression technology, low-noise condensing fan, refrigeration system components and intelligent computer controller, through reasonable system matching and design, so that it can greatly increase the rate under low temperature working conditions, enhance the stability of the system, and realize the operation of the unit at an ambient temperature above -20.

Therefore, the unit is usually suitable for HVAC projects where there is no heating pipe network or other stable and reliable heat source, and at the same time air conditioning is required to be used all year round. It is widely used in the cooling and heating air-conditioning systems of office buildings, hotels, hotels, shopping malls, hospitals, theaters, villas and other buildings in cold areas such as North China and Northwest China, and can meet the different requirements of process air-conditioning systems in electronics, pharmaceutical, biological, chemical, electric power, machinery and other industries, and can also meet the needs of floor heating and other industrial heat.

The air-cooled unit and the fan coil unit, air handler, heating pipe and other terminal devices have the advantages of flexible layout and diversified control methods, and can be freely combined.

The warm air source heat pump unit is a low-carbon and energy-saving product, and the compressor adopts the technology of making up air and increasing the enthalpy, so that it can greatly increase the rate under low temperature conditions, enhance the stability of the system, and realize the operation of the unit at an ambient temperature above -30.

Low-temperature and high-heat air-cooled modular units are widely used in cooling, heating and air-conditioning systems in cold areas such as North China and Northwest China, and are suitable for office buildings, guesthouses, hotels, shopping malls, theaters, villas and other construction places.

Product specifications, models and combinations: ZPFR-35NC, ZPFR-45NC, ZPFR-70NC, ZPFR-80NC, ZPFR-90NC can be combined with more than 16 modules, and ZPFR-160NC and ZPFR-180NC can be combined with more than 8 modules.