Combined heat and power (CHP) has higher efficiency than other heating supply methods. However, the total heating supply capacity from CHP plants will soon be lower than the total heating demand in Beijing by 2010. Investigation showed that 10% to 20% of total energy consumption was rejected to the surroundings through cooling water in CHP plants. The cooling water temperature leaving the condenser is normally in the range of 20–35°C during the heating season. This temperature is too low to be used for heating purpose. The total quantity of rejected heat is roughly equivalent to the energy to condition (heating) 25 million m2 building areas. Although circulating water in power plants has many advantages compared with other HP heat sources commonly used, it’s nearly impossible to operate a pipe network with such a small ΔT (10∼15°C) economically. A newly solution based on absorption heat pump (HP) was investigated and a smallscale demonstration project was built in Chifeng, a city of Inner Mongolia in North China. In such a newly district heating (DH) System, the primary pipe network will operate in ΔT of ≈100°C without any change in both outlet temperature of CHP sources and operating temperature of secondary pipe network. Inlet temperature of primary pipe network decreased to 20∼25°C, which makes possibility for waste heat recovery of circulating cooling water in most CHP plants. Comprehensive efficiency in CHP plants will improve 10% ∼ 20% theoretically. Operation effect during whole heating season of the demonstration project was also introduced.
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ASME 2009 3rd International Conference on Energy Sustainability collocated with the Heat Transfer and InterPACK09 Conferences
July 19–23, 2009
San Francisco, California, USA
Conference Sponsors:
- Advanced Energy Systems Division and Solar Energy Division
ISBN:
978-0-7918-4890-6
PROCEEDINGS PAPER
Study on a Newly Absorption Heat Pump District Heating System Available to Purchase
Shigang Zhang,
Shigang Zhang
Beijing Science and Technology University, Beijing, China
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Yong Luo,
Yong Luo
Urban Planning & Design Institute of Tsinghua, Beijing, China
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Changlei Xiao
Changlei Xiao
Urban Planning & Design Institute of Tsinghua, Beijing, China
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Peng Hu
Tsinghua University, Beijing, China
Lin Fu
Tsinghua University, Beijing, China
Shigang Zhang
Beijing Science and Technology University, Beijing, China
Yong Luo
Urban Planning & Design Institute of Tsinghua, Beijing, China
Changlei Xiao
Urban Planning & Design Institute of Tsinghua, Beijing, China
Paper No:
ES2009-90064, pp. 43-48; 6 pages
Published Online:
September 29, 2010
Citation
Hu, P, Fu, L, Zhang, S, Luo, Y, & Xiao, C. "Study on a Newly Absorption Heat Pump District Heating System." Proceedings of the ASME 2009 3rd International Conference on Energy Sustainability collocated with the Heat Transfer and InterPACK09 Conferences. ASME 2009 3rd International Conference on Energy Sustainability, Volume 2. San Francisco, California, USA. July 19–23, 2009. pp. 43-48. ASME. https://doi.org/10.1115/ES2009-90064
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