Water (ground) source heat pump system is a use of underground shallow geothermal resources (also known as geothermal energy, including groundwater, soil or surface water, etc.) can be both heating and cooling energy efficient air-conditioning system. By inputting a small amount of electric energy, the system can transfer heat energy at low temperature to high temperature, and heat can be used as the heat source of heat pump and summer air conditioner respectively in winter, and the unit consumes 1kW of energy and obtains 4 to 5kW of heat / energy, energy source In the underground energy, the system does not discharge any exhaust gas, waste water and waste residue to the outside world, which is an ideal "green air conditioner" and can be widely used in the fields of office buildings, hotels, schools, dormitories, hospitals, restaurants, shopping malls, villas and houses. . Water (ground) source heat pump technology is the most energy-efficient air-conditioning system in the current cooling, heating one way to become the hottest air-conditioning system, the Chinese government strongly advocated, according to policy, where the use of water (ground) source heat pump technology Buildings, through reporting to the local government, get the government's policy support, relief construction costs 140 ~ 200 / ㎡. Water (ground) source heat pump classification Water (ground) source heat pump system can be divided into three categories: 1, groundwater system (open cycle "well water" system) 2, soil buried pipe system (geothermal source closed circulation system) 3 , Surface water system (surface water or lake water system). Open-cycle "well water" systems achieve the purpose of heating or cooling buildings by absorbing or releasing heat from groundwater. The biggest advantage of this program is: a constant groundwater temperature, usually 10 ~ 16 ℃, can reduce the initial investment, while reducing operating costs. Open-loop systems are commonly used in coastal areas where the soil allows recharge to the aquifer in the soil through recharge wells. Geothermal source closed circulation system laid in the soil heat exchanger (pipe), direct heat exchange with the soil. In the winter heat supply units, in the summer to absorb the unit of heat. The vertical loop (pictured to the right) is installed by drilling a vertical hole in the soil and then inserting a polyethylene plastic tube into the hole. Horizontal loops lay heat exchangers (tubes) in 1.5m below ground level. Both vertical and horizontal loops draw or release heat from the soil. Surface water or lake water circulation system uses surface water resources such as rivers, lakes and seas, and exchanges heat with laying heat exchangers in water. By providing a closed heat exchanger in a lake or other body of water near a building, heat is provided or dissipated to the building. Heat exchange device not only beautiful, but also easy to drain. The size and depth of the lake are particularly critical and require sophisticated calculations to determine the lake's ability to meet the cooling and heating needs of the building. Features of Ground Source Heat Pump 1. Features: 1. Advantages: 1. Efficient: The temperature of underground soil is basically constant around 16 ℃ throughout the year, slightly higher than the average temperature in the region by 1 to 2 degrees, making the heat pump Whether in the cooling or heating conditions are in high efficiency point. 2, energy saving, provincial costs: winter operation, the COP is about 4.2, that is, into the 1KW power, available 4KW of heat, the summer run, COP up 5.3, 1KW input power, available 5KW of cooling, energy efficiency 3-4 times the electric heating method; and the heat exchanger does not require defrosting, reducing frost and defrosting power consumption. Ground source heat pump air conditioning system, energy-efficient features that determine its low operating costs. Compared to the traditional central air-conditioning energy-saving more than 50% -75%, so that you will never price increases crisis and hidden dangers. 3, zero maintenance costs: buried pipe part of the operation once used, the basic does not require any maintenance costs of inputs. Not only reduced human resources, but also save a lot of money. 4, green: geothermal resources at your fingertips, ground source heat pump system through the closed water cycle and the soil for energy exchange, does not undermine the stratum structure, do not use groundwater resources, low noise, no emissions and waste, the air does not cause thermal pollution, With zero pollution of good environmental quality. (Heating without combustion process, to avoid smoke pollution, cooling cooling when the cooling tower, to avoid noise and mold pollution.) 5, water conservation: ground source heat pump water system using a fully enclosed cycle, with the help of underground soil Source temperature field to take cold or heat. So do not evaporate, do not replenish water, cycle back and forth, is a water-saving central air conditioning. 6, healthy and comfortable: Ground source heat pump system, without cooling towers, fundamentally eliminate the breeding of Legionella, to protect people's physical and mental health. 7, safe and practical: Ground source heat pump system is free from flammable and explosive hazards, the system has a high degree of automation, can achieve temperature, pressure, flow, key parts of the multi-parameter automatic adjustment, and the installation of good performance. 8, reliable performance: the host and the system match scientific and reasonable, and the selection of the world famous brand products, high strength, high density PVC pipes are imported raw materials production, coupling to use a new type of PE pipe, safe non-toxic, non-corrosive, Good flexibility, high elongation at break, the use of hot-melt and fused system sealing performance is good, do not leak, providing safe operation of the reliability. 9, long life: Buried pipe with Nordic chemical raw materials, processing technology and equipment have high technical requirements, the life expectancy of 50-70 years, the host life of 20-25 years, basically belong to a one-time investment life-long benefit projects . 10, a multi-purpose machine: Ground source heat pump system can be heating, cooling, but also for domestic hot water, a multi-purpose machine, a system that can replace the original boiler plus air conditioning two sets of devices or systems. 11, renewable: the soil has good thermal storage performance, the winter through the heat pump to the earth's shallow low heat to improve the building heating, while storing cold for summer use; summer heat transfer within the building by heat transfer To the ground to cool the building, while storing heat for winter use, to ensure the balance of the earth's heat. 12, flexible control, easy operation and management: high degree of automation, without professional personnel on duty, control, according to the need for flexible control, switch by yourself, warm and cold self-knowledge, you can achieve independent billing unit, sub-room control room to facilitate the owners of the entire system Management. 13, the overall appearance, save area: save the cooling tower, boiler and its accompanying coal shed and slag yard, saving land resources, generating additional economic benefits and improving the external image of the building. Earth surface coupling to take up the landfill can still be used for other sites. 14, no-year review batch: The unit is not a pressure vessel, without fire examination and boiler annual inspection. 15, buried pipe system design professional, scientific, reasonable and reliable. (B) Disadvantages: buried open space required for a larger area. If the end of the fan coil, the required open area of ​​buried pipe for the construction area of ​​1/3; such as the end of the radiant floor heating, buried land required for the open area of ​​1/5 of the construction area of ​​two water source heat pump features A) Advantages: The water source heat pump unit uses water as the carrier and collects low-grade heat energy from lakes, rivers, groundwater and geothermal tailwater, and even industrial waste water and sewage in winter. By using the heat pump system, by partially consuming electric energy, Indoor heating; in the summer to remove the heat inside the house, released into the water, in order to achieve the purpose of summer air conditioning. The unit has the design standards, excellent selection, easy operation, safe and reliable. As the water source heat pump technology uses surface water as the source of cooling and heating of air conditioning units, it has the following advantages: 1. Significant environmental benefits Water source heat pump is a heating and air conditioning system that uses surface water as a source of heat and energy for energy conversion. The heating system eliminates the need for coal-fired, gas-fired and oil-fired boiler room systems. Without a combustion process, it avoids exhaust pollution; eliminates the need for cooling towers for cooling and avoids noise and mold contamination of the cooling tower. Do not produce any waste, waste water, waste gas and dust, make the environment more beautiful. 2, the energy-efficient water source heat pump unit water temperature available in winter is 12-22 ℃, the water temperature is higher than the ambient air temperature, so the heat pump cycle evaporation temperature increases, 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, the design and installation of a good water source heat pump can save 30-40% of the heating and cooling air-conditioners on average. 3, stable and reliable operation The water temperature is relatively stable throughout the year, the scope of its fluctuations is much smaller than the air changes. Is a very good heat pump heat source and air conditioning cold source, water temperature is more constant characteristics, making the heat pump operation more reliable and stable, but also to ensure the system's efficiency and economy. There is no air source heat pump in winter defrost and other difficult issues. 4, a multi-purpose machine, wide range of applications Water source heat pump system can be heating, air conditioning, a multi-purpose machine, a system can replace the original boiler plus air-conditioning two sets of devices or systems. 5, automatic operation of water source heat pump unit due to stable conditions, so you can design a simple system, fewer components, unit operation simple and reliable, low maintenance costs; a high degree of automatic control, long service life. (B) Disadvantages: 1, high maintenance costs, groundwater level vulnerable to changes in the size of the water flow, thus affecting the building's cooling and heating effect. 2, water consumption, long run, easy to cause damage to the formation structure caused landslides
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