Comparative Analysis of Ground Source Heat Pump and Air Source Heat Pump

Ground source heat pump contains groundwater pumping method, buried pipe, pumping water or river water, etc., the extraction of water or river water, the lowest cost, the most expensive way of buried pipe, but the best. As long as there is enough field to lay the pipeline (underground cold heat exchange device) or ZF to allow extraction of groundwater should be given priority to select the source heat pump central air conditioning. Ground source heat pump central air-conditioning is such energy-saving ground-source heat pump technology should be used for underground energy, underground energy or come to solar energy, "our feet have oil," this remark is good, very image. However, air-water heater also has a unique advantage that other products can not match. "Safety + money + comfortable + environmentally friendly": 1, safety: no gas, will not produce any exhaust, but will not appear "gas poisoning"; do not have electric heating rod heating, there will be no leakage risk, care for their health and safety . Air 2, save money: COP value of more than 3, energy efficiency is high, the absolute power, save money. Can save 2/3 ~ 3/4 of the electricity costs, or save 1/2 ~ 2/3 gas expenses and solar water heaters auxiliary heating costs. 3, comfortable: patented technology - Indirect heating over-current, automatic constant temperature pressure water supply, the use of hot water will not be hot and cold, hot water pressure, good comfort. All-weather, water supply throughout the year, make up the solar hot water system, rainy days, night, no sunlight, no hot water available on the embarrassment. 4, environmental protection: air (heat pump) water heater discharge cold, help to reduce the room temperature. First, the shallow geothermal energy source Under the sun's radiation, the Earth has become a giant "storage" of solar energy, in the crust shallow water and rock mass storage large amounts of clean renewable energy, known as shallow geothermal energy , Referred to as ground source. Second, heat pump technology is a scientific invention of modern energy-saving technologies. Enter a certain amount of heat to the heat pump unit to drive the compressor work, so that the working fluid in the unit (such as R22, R134a) repeatedly evaporative heat absorption and condensation heat of physical phase change process, you can achieve spatial heat exchange and transfer transfer . Third, the ground source heat pump Central air conditioning system is based on rock and soil, groundwater or surface water as a low temperature heat source by the water source heat pump units, geothermal energy exchange system, the building system of heating and air conditioning system. Its working principle is: in winter, the heat pump unit absorbs heat from the ground source (shallow water or rock mass) to heat the building; in summer, the heat pump unit absorbs heat from the indoor and transfers it to the ground source to realize the air conditioning in the building Refrigeration. According to the different forms of geothermal exchange system, ground source heat pump system is divided into groundwater source heat pump system and surface water source heat pump system and ground source heat pump system. B, the application conditions First, the groundwater source heat pump system conditions: 1, near the construction of groundwater rich in resources and to facilitate the implementation of water supply and drainage projects. 2, local policy allows the use of groundwater. 3, moderate groundwater temperature, water quality suitable, stable water supply, smooth irrigation. Second, the surface water source heat pump system conditions: 1, near the construction project is rich in surface water (for example: river water, river water, sea water, reservoir water, sewage, water, geothermal tail water, industrial wastewater, etc.). 2, adequate water, moderate water temperature, water quality can be achieved by a simple handling requirements. Third, the ground-source heat pump system (buried pipe) Application conditions: 1, the lack of water near the building or due to various factors, can not use water resources. 2, there are enough places near the building laying "buried pipe" (for example: office buildings before and after the site, villa gardens, school playgrounds, etc.). C, design concept "to meet people's basic needs of hot and cold premise, to maximize environmental protection and energy conservation, while creating excellent indoor air quality" This is Tsinghua Tongfang interpretation of air conditioning products. "Environmental protection, energy saving, water saving, to meet user needs" is the theme of R & D design. First, the environmental water source heat pump The use of surface soil and water storage of solar energy resources as a cold source of heat, no combustion, no smoke, no waste, no pollution, is a clean and environmentally friendly use of renewable resources as a technology. Second, advanced energy-saving design, energy efficiency, heating at 4.0 above, cooling at 5.0 above, up to 7.1. Third, water-saving heat exchanger using "large temperature difference, low flow" design ideas for the design, unit water consumption savings of 40% than the traditional design. Fourth, the capital through a system to achieve the cooling and heating needs, one-time investment is only 1 / 2-2 / 3 of the traditional refrigeration and heating investment; operating costs only the traditional way of 1 / 2-2 / 3. Fifth, the reliable use of subsystems completely independent of the modular design, fewer components, excellent quality, set a variety of security features. Fully take into account the coordinated multi-system control, enabling computer remote operation, the unit more humane and intelligent. Air source heat pump technology 1. Air source heat pump technology is based on the reverse Carnot cycle principle to establish an energy saving, environmental heating technology. Air source heat pump system through the natural energy (air heat storage) access to low-temperature heat source, the system after high-temperature heat integration into a high-temperature heat source, used to take (warm) or supply hot water, the entire system heat collection efficiency is very high. 2 heat pump has four major advantages, the first is energy saving, is conducive to the comprehensive utilization of energy, the second is conducive to environmental protection, the third is the combination of hot and cold, high equipment utilization, saving investment, the fourth because it Is electrically driven, so it is more convenient regulation, heat pump so much everyone's concern. 3. Heat Pump Technology As an energy technology in the 21st century, it can improve energy efficiency by heat pump. There are two meanings of energy efficiency. From an environmental point of view, it can reduce greenhouse gas emissions and reduce the impact on the environment The harmful factor, on the other hand, is a technology that solves the problem of electricity overhead. 4. Heat pump with anti-Carnot principle, with very little energy to absorb a large number of low-temperature heat in the air through the compressor into high-temperature heat compression, transmission to the tank, heating hot water, so it low energy consumption, high efficiency, Fast, safe, environmentally friendly, an endless supply of hot water. As a hot water system it has incomparable advantages. 5. Heat pump hot water unit follow the law of conservation of energy and the second law of thermodynamics, the use of heat pump principle, only need to consume a small part of the mechanical work (electricity), will be in low temperature environment (atmospheric or groundwater, etc.) the heat transfer to high temperature In the environment of the water heater, to heat the system to obtain hot water. Heat pump can be compared with the pump, the water can not spontaneously flow from high to low, to the low water delivery to a height, you must use a pump that consumes part of the power to the water to the top of the tank . Similarly, according to the second law of thermodynamics, heat can not be spontaneously transferred from a low-temperature environment to a high-temperature environment. To achieve this purpose, a machine must consume a portion of mechanical work (such as electric energy) The heat is transferred to a high temperature environment. Such machines are called "heat pumps." The role of the heat pump is to remove the heat in the air or low temperature water, together with the heat energy converted into electricity used by itself, to the high temperature environment to apply.