Influence of supply and return water temperatures on the energy consumption of a district cooling system |
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| Affiliation: | 1. Graduate School of Saitama Institute of Technology, Fusaiji 1690, Fukaya, Saitama 369-0293, Japan;2. Department of Material Science and Engineering, Saitama Institute of Technology, Fusaiji 1690, Fukaya, Saitama 369-0293, Japan;3. Department of Material Science and Engineering, University of Science and Technology Liaoning, Anshan 114051, China;1. Department of Development and Planning, Aalborg University, A.C. Meyers Vænge 15, 2450 Copenhagen SV, Denmark;2. Department of Development and Planning, Aalborg University, Vestre Havnepromenade 9, 9000 Aalborg, Denmark;1. AffaldVarme Aarhus, Karen Blixens Boulevard 7, 8220 Brabrand, Denmark;2. Department of Engineering, Aarhus University, Inge Lehmanns Gade 10, 8000 Aarhus, Denmark |
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| Abstract: | In a district heating and cooling system, for example, the Beijing combined heating, cooling and power (CHCP) system studied here, high temperature water generated by cogeneration plants circulates through a network between the plants and the heating substations. In heating substations, high temperature supply water from the network drives absorption chillers for air-conditioning in the summer, satisfies space heating demands in the winter and provides domestic hot water using heat exchangers throughout the year. This paper studies the significant effect of the parameters, i.e. the supply and return water temperatures in the network, on the CHCP system energy consumption for cooling and for domestic hot water. |
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