【作者】 陈飞；

【导师】 胡春胜；

【作者基本信息】 武汉理工大学 ， 供热、供燃气、通风及空调工程， 2009， 硕士

【摘要】 夏季家用空调器用电负荷大,用电供求矛盾明显,住宅建筑对空调形式的要求也越来越高。对住宅空调新形式的探索,业内人士一直都很关注。户式中央空调和区域供冷是研究的代表性成果,户式中央空调是比较成熟的一种技术,而区域供冷在国内尚不成熟,需进行研究和探讨。本文就某一具体工程实例(高档住宅小区),进行了利用电厂余热进行集中供冷在技术上和经济上的可行性分析研究,主要特点如下:1.通过使用建筑能耗分析软件DeST-h,对该住宅小区的全年能耗和负荷进行了模拟计算,对其输出结果进行分析,得出该小区全年能耗和负荷特点;2.根据能耗和负荷计算的结果,结合该小区现有的一次能源有电厂余热可以利用的具体情况,对集中供冷的冷热源方案进行了选型优化设计;3.根据已有的研究成果对用户末端设备进行了选型设计,对室外管网选择支状形式、采用同程系统和直埋敷设方式进行了分析和讨论;4.根据工程的实际情况,从目前主要应用的三种水系统方式中,选择合适的水系统形式,并对该小区进行了负荷分区和二次泵变流量水系统的方案设计,对该系统的主要设备及管径流速进行了计算选型;5.从该工程实例的实际出发,在经济上,对住宅小区利用电厂余热进行集中供冷方案和选用家用空调器方案进行了初投资和运营成本的计算和分析;从技术上和经济上的研究结果来看,就该工程实例而言,本文的主要结论如下:1.从技术上来说,该住宅小区利用电厂余热进行集中供冷是可行的;2.从经济上来说,该工程实例因规模大,初投资上集中供冷显示了其优越性,较家用空调器要节省,运营成本集中供冷也较家用空调器节约;3.从社会效益来看,集中供冷由于有效利用了电厂余热,实现了电厂一次能源的梯级利用,从而提高了电厂一次能源利用率;减少了余热的排放,降低了用于该部分余热对环境影响治理的社会成本;更多还原

【Abstract】 The contradiction between electricity demand and supply becomes more and more serious due to growing electricity load of household air conditioners in summer. As a result, the requirement of residential engineering for air conditioner type become higher and higher. Exploring new type of residential engineering air conditioner has been drawing attentions of professional persons for a long time. Household central air-conditioning and district cooling systems are main project of research. Household central air-conditioning is relatively mature technique, but district cooling is still immature and worthy further research and exploration.This article focuses on the technical and economical possibility analysis of using remaining heat from power plant for concentrated cooling based on a specific engineering example (a high-grade residential district). The main characteristics of this paper are listed as following:1 .Under the help of engineering energy consumption analysis software DeST-h, we can simulated calculate annual energy consumption and load of the residential district. After analyzing the output result, we can obtain annual energy consumption and load characteristics of the residential district.2.Together with the fact that there is usable remaining heat from power plant in this district, we make and selection and optimization design of cold and heat source for concentrated cooling according to the above calculating results of energy consumption and load.3.We propose a selection design for user’s terminal equipment according to current research result. We make a choice for outside pipe network, process approach and laying method.4.Based on actual engineering conditions, we choose a proper water system from the three alternative widely used water systems. We conduct a load partition for this district and complete the design for variable secondary pump water system. In addition, we propose a calculation and selection for main equipments and pipe diameter flow speed. 5.Finally, we calculate and analyze the initial investment and operational cost of using remaining heat from power plant for concentrated cooling and choosing household air-conditioners.Based on the technological and economical research results, our main conclusions for this specific engineering are listed as following:1 .Technically, it is possible to use remaining heat from power plant for concentrated cooling.2.Economically, concentrated cooling is more advantageous than household air-conditioning. It needs less initial financing and less operating costs due to economies of scale.3.As far as the social benefit, concentrated cooling can improve using efficiency of power plant’s primary energy since it realizes staged utilization. Further, concentrated cooling can save social cost of remaining heat to environments since it reduces heat emission.更多还原