低焓能源发电技术研究

Research on Thermoelectric Generation Technology with Low Temperature Sources

为充分利用低焓能源,利用低沸点工质、采用双循环发电技术探讨了10-50℃的水发电的可行性,并对冷凝系统采用0℃的冰或冰水混合物的发电效率及每吨冰的发电量和跨季节蓄冰的可行性进行了分析计算。结果表明,低温发电技术在理论上可行,以氨为工质时采用朗肯循环的低温差发电系统得到净输出功的最低极限温差接近12℃;利用冰蓄冷发电时可提高系统的净发电效率。

In this paper, the technology of utilizing low enthalpy energy to generate electricity was studied, Ammonia was adopted as the medium, which extracts heat from the water of 10-50℃ and evaporated, then entered to the steam turbine and expanded to drive the generator to generate electricity, the mixture of water and ice was used as the cooling water. The Rankin cycle efficiency of this system, the lowest hot water temperature of getting net electricity, and the quantity of the electricity of each cube ice generating were got. It indicated that, in order to get net electricity, the lowest water temperature is about 12℃.