What is an air source heat pump? Working principle, advantages and disadvantages of air energy heat pump.

Air-source heat pump, also known as heat pump water heater, absorbs air heat source by heat pump to make hot water, and its energy-saving efficiency is more than 4 times that of electric water heater, even more energy-saving than solar water heater. It is the most advanced energy-saving and environment-friendly hot water system in the world.

Working principle of air source heat pump

The heat pump uses the inverse Carnot principle to absorb a lot of low-temperature heat energy in the air with very little electric energy, which is converted into high-temperature heat energy through the compression of the compressor and sent to the water tank to heat hot water, so it has the advantages of low energy consumption, high efficiency, high speed, good safety, strong environmental protection and continuous supply of hot water. The working principle diagram of air source heat pump is hot water system, which has incomparable advantages.

The heat pump hot water unit follows the law of conservation of energy and the second law of thermodynamics. Using the principle of heat pump, only a small part of mechanical work (electric energy) is needed to transfer heat in low temperature environment (atmosphere or groundwater, etc.). ) add it to a water heater in a high temperature environment to make high temperature hot water. A heat pump can be compared with a water pump. Water cannot spontaneously flow from a low place to a high place. To transport water from a low place to a high place, a part of electricity must be consumed by a water pump before it can be sent to a high water tank. Similarly, according to the second law of thermodynamics, heat cannot be spontaneously transferred (transferred) from a low temperature environment to a high temperature environment. In order to achieve this goal, some mechanical work (such as electric energy) must be consumed by machines in order to transfer heat from low temperature environment to high temperature environment. This kind of machine is called "heat pump". The function of heat pump is to take out the heat from air or low-temperature water, and send it to high-temperature environment for application together with the heat energy converted from electric energy used by itself.

Advantages and disadvantages analysis of air source heat pump

First, the advantages of air source heat pump

Advantages: 1: The air source heat pump has a wide application range, the applicable temperature range is -7 to 40℃, and it can be used all year round, and it is not affected by bad weather such as rainy and snowy weather and winter nights, and can be used normally. It can be heated continuously. Compared with the traditional solar water storage type, heat pump products can continuously supply heat and water, which meets the needs of users. It is suitable for all kinds of groups in hot water engineering, and can realize unattended and fully automatic operation. Centralized hot water supply, with water temperature and water level display.

Advantages of air source heat pump 2. Low operating cost: outstanding energy-saving effect, short investment payback period, and air source heat pump can save energy by 70%; Compared with the solar water heater assisted by gas, electricity and electricity, the annual cost is the lowest, about 1/3 for gas water heater and 1/4 for electric water heater. Short-term recoverable investment. Every power consumption 1kw can generate an average of 4kw of heat energy, which is about 3 times more than that of electric hot water boiler.

Advantages of air source heat pump: environmental protection products, no pollution, no combustion emission, no harm to human body and good social benefits.

Advantage 4: The air source heat pump has stable performance and is not affected by the environment. Products run all the year round, not affected by bad weather such as night, cloudy day, rain and snow. It can make hot water 24 hours a day, 365 days a year.

Advantages of air source heat pump 5: Convenient: The air energy heat pump occupies a small space and looks like an outdoor unit of an air conditioner. It can be directly connected to the heat preservation water tank or heating pipe network, which is suitable for high-rise buildings in large and medium-sized cities and is the best choice for large-scale central heating. There is no need for solar collectors, which reduces the floor space by 95%. When used together with solar hot water equipment, it can reduce the floor space of solar collectors by 50%, save a lot of floor space of solar collectors and reduce the volume of hot water storage tank.

Advantages of air source heat pump: good safety performance, without any hidden dangers: unlike electric and gas water heaters, it uses indirect heating to exchange heat with water, without any hidden dangers such as electric leakage and air leakage.

Advantages of air source heat pump 7: multiple groups of central hot water systems are combined, and multiple groups of heat pump units of the same model are used in parallel to ensure that the whole group of water heaters work as one, meet the peak demand of hot water consumption, and provide guarantee for the use of a large number of hot water. When the hot water consumption is low, only one set of heat pump units can be used, others can be turned off, and one set of heat pump units can also be turned off during maintenance without affecting other heat pump units to continue to provide hot water.

Advantages of air source heat pump: automation of system operation; Automatic operation, no need to be on duty, with temperature control device and insulation layer, which can automatically replenish water, heat and cut off power, and provide hot water 24 hours a day. Users can enjoy hot water at any time under any weather conditions.

Advantages of air source heat pump 9: long service life, low maintenance cost, service life exceeding 15 years, and stable equipment performance. Safe operation, high degree of automation, air energy water heater adopts indirect heating mode, safe operation; High degree of automation.

Second, the shortcomings of air source heat pump

Air source heat pump has fewer disadvantages, because air energy is a decentralized energy source, with slow heating speed and low thermal efficiency. In addition, air-source heat pumps are prone to frost, and due to geographical restrictions, air-source heat pumps are more suitable for use in Central and South China.