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Geothermal Heat Sink Energy Scenarios of a District Cooling Case Study Versus Ground-Water Source Heat Pump Proposal 区域供冷与地下水源热泵方案的地热散热器能源方案
该研究论文调查了埃及一家区域冷却厂存在的能源问题,因为千瓦时的电价很高,这影响了该区域冷却厂生产的吨级制冷剂的价格,该制冷剂将出售给该区域冷却区的所有建筑。与使用地热系统相比,区域冷却厂的冷却塔风机及其泵消耗的能源占该厂年总能源的40%以上,而且该厂的制冷机类型均为吸收式制冷机,每吨消耗4.5 gpm,这导致了巨大的耗水量和大型泵。对湖泊进行了测量,并通过Ansys进行了验证。 针对地表温度的CFD,提出了地源热泵系统。本研究调查并利用工厂附近已经用于灌溉的人工湖塘的存在,并通过使用slinky盘管式水平开环系统替换冷却塔,研究了湖泊表面温度的平均温度分布。上述问题的方法由能量建模HAP软件在以下场景下进行:模拟吸收式2500 TR电厂、带冷冻水泵的冷水机、凝汽器泵、,冷却塔显示功率。人力资源消耗DX地源水冷机组的总消耗量为2500 TR。 上述情景的结果表明,使用人工湖地面热泵的总能耗比使用冷却塔的低40%,而且冷却塔改造的成本也被消除,DX地面热泵系统消除了所有冷冻水管道和泵,此外,地面热泵冷凝器的消耗量为每吨2.6 gpm,而吸收式制冷机的消耗量为每吨4.2-4.5 gpm,此外,冷却塔的耗水量将被消除。引文:2016年3月14日至16日在科威特召开的第六届国际能源研究与开发会议
The research paper investigates an existing energy problem in a district cooling plant in Egypt as the price of Electricity kw hour is high which affected the price of the ton refrigerant produced by the district cooling plant to be sold to all the buildings of the district cooling area.The cooling towers fans with their pumps of the district cooling plant consumes more than 40 % the total annual energy of the plant than using geothermal systems, also the type of chillers in the plant were all absorptions chillers which consumes 4.5 gpm per ton, which results to huge water consumption and large size of pumps.Measuring points was taken for the lake and was validated by Ansys. CFD for the surface temperature to propose the geo heat pump system.The research investigates and get use of the existence of the artificial lake pond near the plant which already used of irrigation, and studies the average temperature profile of the surface temperature of the lake by replacing the cooling towers with horizontal open loop system using slinky coil type The methodology of the above problem were carried by Energy modeling HAP software with the following scenarios:Modeling Absorption 2500 TR plant, chiller with chilled water pumps, condenser pumps, and cooling towers showing the KW.HR consumptionsModeling 2500 TR total for DX ground source water cooled package units.The results of the above scenarios show that the total energy consumption with the use of the ground heat pumps of the artificial lake is less with 40% than using cooling towers, moreover the cost of the cooling towers renovations are eliminated, and all the chilled water piping and pumps are eliminated by the DX Ground heat pump system, moreover the Ground heat pump condenser consumption 2.6 gpm per ton vs. 4.2-4.5 gpm per ton for the absorption chiller per ton in addition the water consumption from the cooling tower that would be eliminated.
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