云计算产业园区域供冷方案分析及评价

发布时间：2017-12-30 19:30

本文关键词：云计算产业园区域供冷方案分析及评价　出处：《重庆大学》2016年硕士论文　论文类型：学位论文

【摘要】：我国积极倡导低碳理念,鼓励发展环境友好型能源系统,以提高能源利用效率。使用区域供冷技术能降低冷热源和配电系统容量,显著地减少能源的消耗及污染物排放。区域供冷技术作为解决现阶段能源紧缺和环境问题的有效手段,近年来得到广泛应用和快速发展。根据建筑负荷特性将云计算产业园内的建筑分为机房类建筑,办公类建筑和住宅类建筑,并对三种类型的建筑建立了典型模型,利用DeST软件对三种典型模型进行了全年逐时负荷模拟,并利用区域负荷预测方法得到了云计算产业园的峰值热负荷为8 801.2 kW,峰值冷负荷为238 234.2 kW。对云计算产业园内可利用的常规能源、现有热源和可再生能源(太阳能、浅层水资源)进行了现场调研和分析,根据冷热源的选用原则,提出了区域供冷的两种方案:江水源热泵区域供冷方案和蒸汽双效型溴化锂吸收式机组区域供冷方案,并与常规分散式方案进行了比较。运用价值工程理论的方法对三种方案的寿命周期成本及功能性进行了分析,结果表明:江水源热泵区域供冷方案功能性最优,初投资成本虽然最高,但由于年运行费用低使其寿命周期成本最低,最终使其价值系数也最大,为1.076;常规分散式方案功能性最差,初投资成本虽然最低但由于年运行费用高导致寿命周期成本最高,最终使其价值系数最小,为0.907。采用终点破坏法对三种方案在寿命周期内产生的环境负荷进行分析,结果表明:寿命周期内,江水源热泵方案和蒸汽双效型溴化锂吸收式方案产生的环境负荷比常规的分散式方案分别少6.39%和67.13%,从人类健康和生态环境可持续发展的角度考虑,蒸汽双效型溴化锂吸收式方案更优。综合成本因素、功能性因素和环境影响因素提出了一种可用于方案优选的评价指标——成本收益指数。通过分析计算,得到了江水源热泵方案和蒸汽双效型溴化锂吸收式方案的成本收益指数分别为1.34和6.02,说明蒸汽型溴化锂吸收式方案为优选方案。
[Abstract]:China actively advocates the concept of low-carbon and encourages the development of environment-friendly energy systems to improve energy efficiency. The use of regional cooling technology can reduce the capacity of cold and heat sources and distribution systems. Reduce energy consumption and pollutant emission significantly. Regional cooling technology is an effective means to solve the current energy shortage and environmental problems. In recent years, it has been widely used and developed rapidly. According to the characteristics of building load, the buildings in the cloud computing industry garden can be divided into computer room, office and residential buildings. The typical models of three types of buildings are established, and three typical models are simulated by using DeST software. Using the method of regional load forecasting, the peak heat load of cloud computing industry park is 8 801.2 kW. The peak cooling load is 238,234.2 kW.The field investigation and analysis of conventional energy, existing heat sources and renewable energy (solar energy, shallow water resources) available in cloud computing industry garden are carried out. According to the principle of cold and heat source selection, two schemes of regional cooling are put forward: the regional cooling scheme of river water source heat pump and the regional cooling scheme of steam double effect lithium bromide absorption unit. The life cycle cost and function of the three schemes are analyzed by using the method of value engineering. The results show that the water source heat pump in the region of water source heat pump has the best function. Although the initial investment cost is the highest, its life cycle cost is the lowest because of its low annual operating cost, and finally its value coefficient is the largest, which is 1.076; The function of the conventional decentralized scheme is the worst, the initial investment cost is the lowest, but the life cycle cost is the highest because of the high annual operating cost, and the value coefficient is the smallest. The end point failure method is used to analyze the environmental load generated by the three schemes in the life cycle. The results show that: in the life cycle. The environmental load of the river water source heat pump scheme and the steam double effect lithium bromide absorption scheme is 6.39% and 67.13% less than that of the conventional dispersive scheme, respectively. Considering the sustainable development of human health and ecological environment, the steam double-effect libr absorption scheme is better. In this paper, a cost benefit index, which can be used to evaluate the optimal scheme selection, is proposed for functional factors and environmental factors. The cost benefit index of the river water source heat pump scheme and the steam double effect lithium bromide absorption scheme are 1.34 and 6.02 respectively, which shows that the steam type lithium bromide absorption scheme is the optimal scheme.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TU831

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