用冷却塔对通信机房进行供冷的研究
发布时间：2018-12-14 05:49
【摘要】：随着能源形势的日益严峻,节能降耗已刻不容缓。由于建筑能耗在总能耗中所占的比例增长迅速,降低建筑能耗、节约我国有限资源是我们研究的主要目标。机房设备散热量大,一旦供冷系统停止工作,机房环境就不能满足要求,所以需要空调系统不间断运行,供冷能耗巨大。本文在前人对冷却塔供冷研究的基础上,对冷却塔干、湿工况供冷的计算方法进行了详细的介绍。运用eQUEST软件对天津某电信机房的室内负荷和供冷系统的能耗进行全年逐时的模拟。发现围护结构所产生的负荷对总负荷影响很小,但对总负荷的影响是双向的,当室外温度达到一定条件时会对减小总负荷起到积极的作用,设备负荷为机房空调的主要负荷。在原有设备的基础上只增加板式换热器后,冷却塔在室外条件达到一定要求时即可代替制冷机对机房进行供冷。根据室内冷负荷计算出确切的干、湿工况供冷的切换温度,并通过设备的功率和使用时间来计算出冷却塔对机房供冷时的能耗和与冷机供冷相比的节能量,节能量为2462616(kW·h)。将不同的运行方案进行比较后得出节能效果较好的一个,然后将其推广到其它4个气候区。通过对冷却塔供冷时间的统计和供冷系统运行能耗的分析,确定冷却塔对机房供冷方案在各个气候区的适用性。此外由于设计的供回水温度为7℃供/12℃回,该温度可满足大多数情况的供冷要求,说明冷却塔在冷季对其它建筑供冷时同样具有很大的节能效益。
[Abstract]:With the increasingly severe energy situation, energy saving and consumption reduction has become urgent. As the proportion of building energy consumption in the total energy consumption is increasing rapidly, the main goal of our research is to reduce the building energy consumption and save the limited resources of our country. Once the cooling system stops, the environment of the engine room can not meet the requirements, so it needs the air conditioning system to run continuously, and the cooling energy consumption is huge. On the basis of previous researches on cooling tower, the calculation method of cooling tower under dry and wet conditions is introduced in detail in this paper. The indoor load and cooling system energy consumption of a telecom room in Tianjin are simulated by eQUEST software. It is found that the load generated by the enclosure structure has little effect on the total load, but the influence on the total load is two-way. When the outdoor temperature reaches a certain condition, it will play a positive role in reducing the total load, and the equipment load is the main load of the air-conditioning in the engine room. After the plate heat exchanger is added only to the original equipment, the cooling tower can be used instead of the refrigerator to cool the machine room when the outdoor conditions reach a certain requirement. According to the indoor cooling load, the switching temperature of cooling under dry and wet working conditions is calculated, and the energy consumption of cooling tower in cooling room and the energy saving compared with cooling machine are calculated through the power and time of the equipment. Energy saving is 2462616 (kW h). After comparing the different operation schemes, the one with better energy saving effect is obtained, and then it is extended to the other four climatic regions. Through statistics of cooling time of cooling tower and analysis of energy consumption of cooling system, the applicability of cooling tower to cooling scheme of engine room is determined. In addition, since the designed water supply temperature is 7 鈩，
本文编号：2378037
[Abstract]:With the increasingly severe energy situation, energy saving and consumption reduction has become urgent. As the proportion of building energy consumption in the total energy consumption is increasing rapidly, the main goal of our research is to reduce the building energy consumption and save the limited resources of our country. Once the cooling system stops, the environment of the engine room can not meet the requirements, so it needs the air conditioning system to run continuously, and the cooling energy consumption is huge. On the basis of previous researches on cooling tower, the calculation method of cooling tower under dry and wet conditions is introduced in detail in this paper. The indoor load and cooling system energy consumption of a telecom room in Tianjin are simulated by eQUEST software. It is found that the load generated by the enclosure structure has little effect on the total load, but the influence on the total load is two-way. When the outdoor temperature reaches a certain condition, it will play a positive role in reducing the total load, and the equipment load is the main load of the air-conditioning in the engine room. After the plate heat exchanger is added only to the original equipment, the cooling tower can be used instead of the refrigerator to cool the machine room when the outdoor conditions reach a certain requirement. According to the indoor cooling load, the switching temperature of cooling under dry and wet working conditions is calculated, and the energy consumption of cooling tower in cooling room and the energy saving compared with cooling machine are calculated through the power and time of the equipment. Energy saving is 2462616 (kW h). After comparing the different operation schemes, the one with better energy saving effect is obtained, and then it is extended to the other four climatic regions. Through statistics of cooling time of cooling tower and analysis of energy consumption of cooling system, the applicability of cooling tower to cooling scheme of engine room is determined. In addition, since the designed water supply temperature is 7 鈩，
本文编号：2378037
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