Solution
27
2024
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12
Heating Improvement Project of Agricultural and Animal Husbandry Science and Technology Park in Haibei Prefecture, Qinghai Province
The project is located in Haibei Prefecture, which has a plateau continental climate characterized by long cold periods, short warm and cool periods, abundant light, strong solar radiation, distinct dry and wet seasons, rain and heat in the same season, and frequent night rains and gales. The average annual temperature is -2.4℃～1.4℃, the highest temperature is 28℃, the lowest temperature is -36.3℃. The average annual precipitation is 309.9～529.1 millimeters. Annual sunshine hours 2517.6～2995.3 hours. The average annual radiation per square meter is 5210.2MJ～6568.3MJ. There is no absolute frost-free period.
The project is located in Haibei Prefecture, which has a plateau continental climate characterized by long cold periods, short warm and cool periods, abundant light, strong solar radiation, distinct dry and wet seasons, rain and heat in the same season, and frequent night rains and gales. The average annual temperature is -2.4℃～1.4℃, the highest temperature is 28℃, the lowest temperature is -36.3℃. The average annual precipitation is 309.9～529.1 millimeters. Annual sunshine hours 2517.6～2995.3 hours. The average annual radiation per square meter is 5210.2MJ～6568.3MJ. There is no absolute frost-free period.
Haibei Prefecture has a cold, warm and humid climate characterized by long sunshine hours, strong solar radiation, and a large temperature difference between day and night. In the winter half of the year, the climate is cold and dry due to the dry and cold climate from Siberia. The annual heating cycle is more than 7 months (210 days).
Haibei State Agricultural and Animal Husbandry Science and Technology Park, heating area of 1750 square meters, belonging to the non-energy-saving buildings, the original heating source for coal-fired boilers, heating end are radiators, the water system is a typical single-pipe centralized heating system, the building age is long, the windows are single-glazed, the external walls have insulation but the effect is general, and the water supply and return main pipeline pipe diameter is smaller, the distance to the pipeline is long, and the original coal-fired boiler system is set up for the outlet temperature of 75 ℃, the return temperature is 50 ℃, and the temperature of water is 50 ℃. 75 ℃, the return temperature of 50 ℃, according to the low-temperature air source heat pump system, the water temperature of 50 ℃, the return temperature of 40 ℃, will result in insufficient heating temperature difference and small pipe diameter is difficult to meet the low-temperature air source heat pump system small temperature difference and large flow rate of the system design, it is difficult to ensure that the heating effect. If the heating system of the Science and Technology Park to carry out a drastic transformation of the words need to spend a large amount of investment, which makes it difficult for Party A to accept, and the United States of America, double-stage high-temperature heat pump unit is a perfect solution to these problems, only in the original system on the basis of the replacement of the heating source can be.
Keyword: Full DC Inverter Heat Pump
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