What are the advantages of water source heat pump compared with conventional air conditioning technology

What are the advantages of water source heat pump compared with conventional air conditioning technology

Today, let us take a look at what are the advantages of water source heat pumps compared with conventional air conditioning technology?

　　 1. High efficiency and energy saving

　　 Water source heat pump is currently the cooling and heating method with the highest energy efficiency ratio (COP value) in the air conditioning system. The theoretical calculation can reach 7 and the actual operation is 4-6. The usable water temperature of the water source heat pump unit is 12-22°C in winter, and the water temperature is higher than the ambient air temperature. Therefore, the evaporation temperature of the heat pump cycle increases and the energy efficiency ratio increases. In summer, the water temperature is 18～35℃, and the water temperature is lower than the ambient air temperature, so the condensing temperature of refrigeration is lowered, making the cooling effect better than air-cooled and cooling towers, thereby improving the operating efficiency of the unit. The water source heat pump consumes 1kW·h of electricity, and users can get 4.3～5.0kW·h of heat or 5.4～6.2kW·h of cold. Compared with the air source heat pump, its operating efficiency is 20-60% higher, and the operating cost is only 40-60% of the ordinary central air conditioner.

　　 2. Renewable energy utilization technology

　　 water source heat pump is a heating and air conditioning system that uses the solar energy stored in the earth's water body as a cold and heat source to convert energy. The water bodies that can be used include groundwater or rivers, rivers and lakes on the surface, and the ocean. Surface soil and water are not only a huge solar collector, collecting 47% of solar radiation energy, 500 times more than the energy used by humans every year (underground water indirectly receives solar radiation energy through soil), but also A huge dynamic energy balance system, the soil and water on the surface naturally maintain a relative balance of energy reception and emission. This makes it possible to use the nearly unlimited solar or ground energy stored in it. Therefore, the water source heat pump uses a technology of clean and renewable energy.

　　3, save water and land

　　Using surface water as a source of cold and heat, it releases or absorbs heat to it, does not consume water resources, and does not cause pollution to it. The boiler room and auxiliary coal yard, oil storage room, cooling tower and other facilities are omitted, and the area of ​​the machine room is much smaller than the conventional air conditioning system, which saves building space and is also conducive to the beauty of the building.

　　 4. Significant environmental benefits

　　The water source heat pump unit eliminates the need for coal, gas, oil and other boiler room systems when heating, and has no combustion process, avoiding pollution such as smoke and sewage. The cooling water tower is omitted during cooling, and the noise, mold pollution and water consumption of the cooling tower are avoided. Therefore, the water source heat pump unit runs without any pollution, no combustion, no smoke, no waste residue, waste water, exhaust gas and soot, and no urban heat island effect. It is very environmentally friendly and is an ideal green product.

　　 5. One machine with multiple functions, wide application range

　　 The water source heat pump system can be used for heating, air-conditioning, and domestic hot water. One machine has multiple functions. One system can replace the original boiler and air-conditioning two sets of devices or systems. Especially for buildings that have both heating and cooling requirements, water source heat pumps have obvious advantages. Not only saves a lot of energy, but a set of equipment can meet the requirements of heating and cooling at the same time, reducing the initial investment of equipment. Its total investment is only 60% of the traditional air-conditioning system, and it is easy to install, the installation workload is less than that of the traditional air-conditioning system, the installation period is short, and the installation is easy to change. Water source heat pumps can be used in hotels, shopping malls, office buildings, schools and other buildings. Small water source heat pumps are more suitable for heating and cooling in villas and residential quarters.

　　6, stable and reliable operation, convenient maintenance

　　 The temperature of the water body is relatively stable throughout the year, and its range of fluctuation is much smaller than that of the air. The constant temperature of the water body makes the operation of the heat pump unit more reliable and stable, and also ensures the efficiency and economy of the system. Adopt full computer control, high degree of automation. Due to the simple system, few parts of the unit and stable operation, the maintenance cost is low and the service life is long.

　　7. Comply with national policies and obtain policy support

　　The country attaches great importance to the development and utilization of renewable energy. The "Renewable Energy Law of the People's Republic of China" has been implemented on January 1, 2006. At the same time, in the "National Medium and Long-term Science and Technology Development Plan Outline", vigorous development and large-scale application of new energy and renewable energy are the priority development themes in the energy field. From the height of national legislation and development strategy, the development and application of renewable energy should be strongly promoted. According to the policies and regulations of the Ministry of Construction, all buildings that adopt water-source heat pump air-conditioning technology can obtain policy support from the government by reporting to the local construction committee, reducing or exempting building supporting costs from 140 to 200 yuan/m2. Compared with the heating system of boiler (electricity, fuel) and air source heat pump, the advantages are reflected in: Compared with the heating system of boiler (electricity, fuel) and air source heat pump, water source heat pump has obvious advantages. Boiler heating can only convert 90% to 98% of electric energy or 70% to 90% of fuel internal energy into heat for users to use. Therefore, ground source heat pumps can save more than two-thirds of the electric energy than electric boiler heating. The fuel boiler saves more than half of the energy. Since the heat source temperature of water source heat pump is relatively stable throughout the year, generally 10～25℃, its cooling and heating coefficient can reach 3.5～4.4, which is about 40% higher than traditional air source heat pump, and its operating cost is 50%～60% of ordinary central air-conditioning. Therefore, in the past ten years, water source heat pump air-conditioning systems have achieved rapid development in North America, Central and Northern Europe and other countries. Especially in the past five years, China’s water source heat pump market has become increasingly active, making this technology widely available. Application becomes an effective heating and cooling air-conditioning technology.