1. The composition of air energy heat pump central air conditioner
The air-energy heat pump water system air conditioner consists of an air-energy heat pump indoor unit and an air-energy heat pump outdoor unit. The air-energy heat pump outdoor unit is generally referred to as a cold and hot water unit, and the air-energy heat pump indoor unit is generally referred to as a fan coil unit. The air-conditioning cold/hot water is provided by the outdoor host of the air-energy heat pump and delivered to the indoor by the water supply pipe system. The water and air exchange heat at the end of the indoor fan coil to adjust the temperature to meet the different needs of people.
2.Working principle of air energy heat pump central air conditioner
In summer, the outdoor main unit of the air energy heat pump central air conditioner produces chilled water, which is exchanged in the fan coil unit through the circulation system to blow out the cold air; in winter, the outdoor main unit of the air energy heat pump produces hot water, which is used in a dedicated The circulating flow in the heating pipe heats the ground decoration layer, and the ground is heated through the heat transfer of ground radiation and convection.
The “triple supply” of the air energy heat pump has one more function than the “secondary supply”, that is, it can heat domestic water through the heat generated by the operation of the main engine, and at the same time meet the three needs of air conditioning refrigeration, floor heating and domestic hot water.
3.What are the “secondary supply” and “triple supply” of air-energy heat pump central air conditioning?
Compared with traditional air conditioners, air-energy heat pump “secondary supply” and “triple supply” central air conditioners are more convenient to install, more practical and more energy-saving, and can also greatly save indoor space; compared with fluorine system central air conditioners, ” Dual supply” and “triple supply” are more comfortable to use and more environmentally friendly.
In addition, the central air conditioner of the water system uses water as the refrigerant, and the temperature difference during the heat exchange process is only about 5 degrees. The cold air blown out during cooling in summer is more uniform and soft, and the temperature rise is more stable during heating in winter, and the comfort level is much higher than that of traditional equipment.
4. The advantages and disadvantages of air energy heat pump dual supply and triple supply central air conditioning
Advantages of air-energy heat pump dual power supply: In the past, whether it is cooling or heating, several outdoor units need to be installed on the outer wall. The air-energy heat pump dual power supply solves this big problem. It can cool and heat the whole house. Both the air-energy heat pump and the combined supply basically use the DC frequency conversion technology, which saves a lot of energy in terms of electricity consumption.
Disadvantages of air source heat pump dual supply: easily affected by the external environment, air source heat pump mainly achieves heating and cooling effects by transferring heat in the air, when the outdoor temperature is low, the evaporator may appear frosting, affecting the evaporator work efficiency.
Advantages of air-energy heat pump triple supply: only one air-energy heat pump outdoor host is required, and the air-energy triple supply can provide cooling, heating, and domestic hot water. In the cooling + hot water operation mode, all condensation heat can be recovered and utilized. , the overall energy efficiency ratio is high. The initial investment and operating costs of air-energy heat pumps are more than 10% lower than those of traditional air conditioners + water heaters. When the cooling mode is turned on in summer, the air energy heat pump recovers all the heat originally discharged into the environment through the total heat recovery technology, and is used to heat the domestic hot water to achieve the purpose of energy saving.
Disadvantages of air-energy heat pump triple supply: due to the different water quality in different regions, the bathing hot water heat exchanger flows into new water every day, which requires high corrosion resistance of the heat exchanger. Corrosion and penetration of the device caused water to enter the fluorine circuit system, resulting in the scrapping of the entire air-energy heat pump unit. If you want to eliminate the problem of corrosion and wear as much as possible, the hot water for bathing needs to be used as a secondary heat exchange system, and the condensing temperature is bound to increase by about 5 °C. In addition, the air energy heat pump triple supply product is far less effective than the air energy heat pump dual supply in terms of the use effect and the stability of the later system.
The above is a comparative analysis of the advantages and disadvantages of the air energy heat pump dual supply and triple supply. You can choose the air energy dual supply or triple supply according to your actual situation, so that you will not have the phenomenon of why your own air energy heat pump heating costs are much higher than others. happened. If it is a place with a large amount of hot water such as a bath center, it is recommended to use the “heating + hot water” combination of air-energy heat pump combined supply, and the hot water supply is more stable and lasting. If it is used by ordinary households, it is necessary to take into account summer cooling. Choose air energy heat pump triple supply, the combination mode of “heating + hot water + cooling” is more economical. Air energy heat pumps are not only widely used in large hotels, villas, and bathing centers, but also widely used in agricultural greenhouse heating. Compared with traditional heating and hot water supply methods, the daily power consumption is reduced by 3/4.