Ground source heat pump system in three forms of contrast
November 13 08:08:51, 2022
With the global energy crisis and the increasing human demand for environmental protection, people continue to abandon the traditional way of heating and cooling while adopting more advanced and more energy-efficient cooling and heating technologies and products. Buried ground source heat pump central air conditioning system is known as the most effective twenty-first century central air conditioning technology. This technology does not require a boiler room in winter. In summer, no cooling towers, no coal, no fuel, no gas, no drilling, no underground water, no damage to groundwater resources, no thermal pollution of air and no generation of waste gas and waste , With good quality of zero pollution. Summer can be cold, winter heating, but also for domestic hot water, to achieve "triple for", but also with less investment, low operating costs and other top ten features. The Chinese party and all levels of government regard energy conservation and environmental protection as important elements of a sustainable development strategy. China's Current Energy Situation China ranks second in the world in total energy consumption. The average energy consumption in China is less than 50% of the world average. The total amount of China's building energy consumption has been rising year by year, accounting for 27.45 of the total energy consumption % Of China's blowing above 9 are high-energy buildings; China's building energy consumption is more than three times the Western countries; in building energy consumption, nearly 55% of heating and air conditioning energy consumption, and is still rising; China's sulfur dioxide emissions Ranking first in the world; China's carbon dioxide emissions rank second in the world. What is the ground source heat pump? What is buried tube ground source heat pump? Ground source heat pump is a central air conditioning process. It uses surface water, groundwater or underground shallow ground temperature as a cold source of heat, both heating and cooling of energy-efficient air-conditioning system. Ground source heat pump by entering a small amount of high-grade energy (such as electricity), to achieve low-temperature heat transfer to high temperature. In winter, the heat in the earth can be "taken" out to raise the temperature for indoor heating; in summer, the indoor heat is taken out and released into the ground. Usually source heat pump consumes 1 KW of energy, users can get more than 4KW of heat or cold. Ground source heat pump system is divided into three forms, one is the way of using surface water, that is, rivers, lakes, sea, etc .; the other is the way of using groundwater, also known as "water source heat pump" central air conditioning system; Three are buried tube, and some are called "ground-source heat pump" central air conditioning system. Comparison of several types of ground source heat pump, to determine the direction of the development of ground source heat pump. Below we compare the three forms of ground source heat pump: Type restricted project Buried soil source Groundwater source Surface water source Water resources Laws and regulations are not restricted, the state encourages restricted, approval is strictly restricted, subject to approval Geographic latitude For China's Yangtze River North of the region to the north of the Yangtze River in the affected areas, requiring surface water temperature greater than 7 ° C in winter, less than 30 ° C in summer The distance between buildings and ground sources unaffected, vertical pipe around the building to long-term pumping will cause the ground Settlement, well density and well spacing have strict requirements of the water distance should not be too far, life expectancy and reliability are not affected, underground buried pipe can be used 50 years of water well water volume is greatly affected by changes in groundwater level, the service life of wells Many factors affect the water intake by the impact of surface water level changes, the service life of water pipelines is much lower than the vertical soil buried pipelines Conclusion Through the above types of comparative analysis, buried pipe ground source heat pump is the most suitable for our country, although the other two Types also have their own inherent advantages, but the hardware and software conditions in China point of view, there is still some unreasonable And not enforceable, should not be widely promoted in our country.
