Shallow groundwater has the characteristics of constant temperature in winter, warm summer and cool seasons. It is close to the local average temperature of the whole year and is almost unaffected by atmospheric temperature and internal temperature of the earth. The internal temperature of the earth is very high. Under normal conditions, the water temperature increases by about 2.5 °C for every 100 meters of well drilling. The greater the temperature gradient, the closer the geothermal resources are to the ground, and the more geothermal mining value. In order to obtain a lower water temperature, the well should not be too shallow or too deep, and it has been proved that the water temperature is the coldest at a depth of 5 to 30 meters underground. The reason why the shallow groundwater within 30 meters can maintain the low temperature and constant temperature is that the heat is always transpiration upward, and the cold air always precipitates downward, and the heat from the sun and the interior of the earth can be released to the atmosphere. The natural air-conditioning of the natural air-conditioning air conditioner is absorbed by the soil around the recharge well after a summer operation. After a winter, it can be restored to the original ground temperature. The geothermal energy is a renewable natural energy source.
The well water in the Yangtze River Basin is constant at around 17 °C, and the latitude changes to the north. The well water in many places is only 8-12 °C. The ancients have long known that the well water is used for cooling. In modern times, there are also various well water Air Conditioners, but the general wells. Water and air conditioning water flow noise is large, the cooling effect is poor, people call it earth air conditioning, the general well water air conditioning only takes water, not water, waste water, the country is forbidden to use. The biggest contribution of the factory is to develop a high-efficiency water-temperature air conditioner, and at the same time, it can provide equipment and underground engineering design and construction technology suitable for water and water in shallow soil, and can reasonably utilize geothermal energy without wasting or polluting groundwater source. The universal use of natural air-conditioning and air-conditioning provides technical guarantee.
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