Abstract
In order to decrease the energy consumption of large-scale district heating systems with cogeneration, a district heating system is presented in this paper based on absorption heat exchange in the cogeneration system named Co-ah cycle, which means that the cogeneration system is based on absorption heat exchange. In substations of the heating system, the temperature of return water of primary heat network is reduced to about 25°C through the absorption heat-exchange units. In the thermal station of the cogeneration plant, return water is heated orderly by the exhaust steam in the condenser, the absorption heat pumps, and the peak load heater. Compared with traditional heating systems, this system runs with a greater circuit temperature drop so that the delivery capacity of the heat network increases dramatically. Moreover, by recovering the exhausted heat from the condensers, the capacity of the district heating system and the energy efficiency of the combined heat and power system (CHP system) are highly developed. Therefore, high energy and economic efficiency can be obtained.
Similar content being viewed by others
References
Building Energy Research Center, Tsinghua University. 2008 Annual Report on China Building Energy Efficiency. Beijing: China Architecture & Building Press, 2008, 12 (in Chinese)
Danila N. Heat production in co-generation plants and its transport over large distances. Proceedings of the Symposium with International Participation on Energy Conservation and International Cooperation, Bucharest, Rumania, 1982, 89–96
Paskov P, Skol’nik K. The increase of efficiency of municipal systems for centralized heat supply. Teploenergetika, 1993, (12): 16–19 (in Russian)
Zsebik A. Heat exchanger connection in substations-a tool of decreasing return temperature in district heat networks. Energy Engineering, 2001, 98(5): 20–28
Gao Yan, Fu Lin. Comparison and selection of HVAC schemes applying recycling cooling water from power plants. Heating Ventilating & Air Conditioning, 2007, 37(1): 52–54 (in Chinese)
Song Zhiping. Total energy system analysis of heating. Energy, 2000, 25(9): 807–822
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Fu, L., Li, Y., Zhang, S. et al. A district heating system based on absorption heat exchange with CHP systems. Front. Energy Power Eng. China 4, 77–83 (2010). https://doi.org/10.1007/s11708-010-0022-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11708-010-0022-0