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The Possibility Study of Residential District Using the Power Plant Remaining Heat for Concentrated Cooling

Author: ChenFei
Tutor: HuChunSheng
School: Wuhan University of Technology
Course: Heating,Gas Supply, Ventilation and Air Conditioning Engineering
Keywords: Residential Engineering Concentrated Cooling Variable Secondary Pump Water System DeST-h Load Partition
CLC: TU831
Type: Master's thesis
Year: 2009
Downloads: 112
Quote: 0
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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.

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CLC: > Industrial Technology > Building Science > Housing construction equipment > Air-conditioning, heating, ventilation,and its equipment > Air-conditioning
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