燃气热电联产系统余热挖潜方式研究=Study of the Modes for Tapping the Latent Power in Utilizing theWaste Heat of a Gas Heat and Power Cogeneration System [ 刊, 汉 ] ZHAO Xi-ling, FU Lin, LI Feng, WANG Xiao （Department of Architectural Technology and Science, Tsinghua University, Beijing, China, Post Code： 100084）//Journal of Engineering for Thermal Energy ＆ Power. - 2014,29 （4）. - 349 - 354In the light of the waste heat from the flue gases and steam exhausted from a gas-steam combined cycle heat and power cogeneration unit, described were five technologies for utilizing the waste heat, namely,3S clutch technology, absorption type heat pump technology, compression type heat pump technology, absorption type heat pump ＋com- pression type heat pump technology and heat supply technology based on the Co-ah cycle （absorption type heat ex- change heat and power cogeneration centralized heat supply technology） with their enhancement in the capacity to supply heat, energy-saving and cost-effectiveness being quantitatively analyzed. Through the above-mentioned anal- ysis, the authors have come to a conclusion that all the five technologies can be used to enhance the heat supply ca- pacity and the heat supply technology based on the Co-ah cycle, however, can lead to a maximal rise in the heat supply capacity. An analysis of the energy-saving performance leads us to conclude that all the five technologie~ can achieve their respective energy-saving effectiveness but the heat supply technology based on the Co-ah cycle can ac- complish the most outstanding energy-saving effectiveness. An analysis of the cost-effectiveness induces one to con- clude that under the condition of increasing the unit heat supply capacity （ 1 MW） ,if the absorption type heat pump technology and the heat supply technology based on the Co-ah cycle were adopted, the initial investment would be slightly higher than those of the others and the savings in the operation cost, however,would be relatively more obvi- ous. With the factors in the two aspects, i. e. a rise in the heat supply capacity and cost-effectiveness, being consid- ered in a comprehensive way, the heat supply technology based on the Co-ah cycle is regarded as having more lead- ing edges. Key Words： heat and power cogeneration, absorption type heat exchange, waste heat recovery from flue gases, waste heat recovery from the steam
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