两级TFE—TUR复合地热发电系统热力学分析及能量利用率优势

Thermodynamic Analysis of a Two-Stage TFE-TUR Hybrid Geothermal Power Generating System and Energy Utilization Factor Advantage

本文在单级复合系统基础上,进一步提出两级TFE—TUR复合地热发电系统,并对其进行了热力学分析,给出了一、二级最佳中间匹配温度计算式。同时,还将该系统与单级复合系统、全流系统及常规闪蒸系统作了比较,表明该系统可望成为(火用)效率最高的地热发电系统。

On the basis of a single-stage hybrid system the author has further proposed a two-stage TFE-TUR hybrid geothermal power generating system and performed its thermodynamic analysis with a formula for calculating the first and second stage optimum intermediate matching temperature being given. In addition, a comparison is made of the present system with the single-stage hybrid system. total flow system and the conventional flash steam system, which shows that the two-stage TFE-TUR hybrid system may well be expected to be a geothermal power generating system with the highest exergy efficiency.