Comparison between air - cooled heat pump and water source heat pump refrigeration

What is the difference between air-cooled heat pump and water source heat pump refrigeration? Although the United States air to water heaters, overall, due to different regions, different users and the national energy policy, the impact of fuel prices. Water source heat pump operating more efficient, lower cost. However, compared with the traditional air-conditioning and cooling heating methods, different regions and different needs of the conditions, the water source heat pump investment economy will be different. The characteristics of air-cooled heat pump units do not have to set up spare units, air-cooled (hot) water unit modular design. During operation, the computer automatically controls and adjusts the operating status of the unit, so that the output power is coordinated with the actual utilization of the working environment. The unit consists of several modules, modular units of high reliability. Temporary overhaul of any module will not affect the normal operation of the whole machine, greatly improving the rationality and reliability of the entire air conditioning system. No room facilities and cooling towers system, the unit can be placed on the roof or the ground. Does not occupy the effective use of the area. At the same time, installation work is easy. So do not need day-to-day professional and technical personnel management and maintenance. As the unit in the process of running the entire computer is automatically controlled. As the outdoor temperature -8 ℃ start difficult, air-cooled heat pump deficiencies. Need to increase the auxiliary electric heating. The characteristics of water source heat pump Winter collection from the lake, river, groundwater and geothermal tail water, water source heat pump unit to water as a carrier. Even industrial waste water, low-grade thermal energy of sewage, with the help of heat pump system, through the consumption of local electric energy, the obtained energy is supplied to the room for heating; in summer, the indoor heat is taken out and released into the water for the purpose of summer air-conditioning. The unit has design standards , Choose good, easy to operate, safe and reliable. As water source heat pump technology uses surface water as the source of cooling and heating in air conditioning units, it has the following advantages: Significant environmental benefits Energy conversion heating and air conditioning system. The heating system eliminates the need for coal, gas, oil and other boiler room system, water source heat pump is the use of surface water as a source of cold and heat. No combustion process, to prevent smoke pollution; cooling for cooling water tower eliminated, to prevent the cooling tower noise and mold pollution. Do not produce any waste, waste water, waste gas and dust, make the environment more beautiful. Energy efficient water temperature is higher than the ambient air temperature, water temperature of the water source heat pump units available in winter for 12-22 ℃. Therefore, heat pump cycle evaporation temperature increased, energy efficiency also increased. The summer water body is 18-35 ℃, the temperature of the water body is lower than the ambient air temperature, so the condensing temperature of the cooling decreases, making the cooling effect better than the air-cooled and cooling towers, and the unit efficiency is improved. According to the EPA of the United States Environmental Protection Agency, a well-designed water source heat pump can save an average of 30,40% of the heating and cooling air-conditioning costs of users. Stable and reliable operation of air to water heaters fluctuations in the range is much smaller than the air changes. Very good heat pump heat source and air conditioning cold source, the water temperature is relatively stable throughout the year. Water temperature is more constant characteristics, making the heat pump operation more reliable and stable, but also to ensure the system's high efficiency and economy. There is no air source heat pump in winter defrost and other difficult issues. A multi-purpose machine, water source heat pump system can be heating, air conditioning. A system can replace the original boiler plus air-conditioned two sets of devices or systems. Automatic operation So can design a simple system, water source heat pump unit due to stable conditions. Fewer components, unit operation simple and reliable, low maintenance costs; high level of automatic control, long life can reach more than 15 years. Water source heat pump is not perfect, its application will be restricted. Available water conditions limit In fact, the actual project, the water source heat pump can theoretically use all the water resources. The difference in interest rates for different uses of water resources is considerable, so the availability of suitable water sources in different regions is a key application of water source heat pumps. The current water source heat pump use, the closed system is generally higher cost. The open system, can find the right water to become a source of heat pump restrictions. On the open system, water requirements must meet a certain temperature, water and cleanliness.