双循环螺杆膨胀发电机组实验分析与研究  

EXPERIMENT ANALYSIS AND STUDY OF DOUBLE CYCLE SCREW EXPANDER GENERATION SYSTEM

作　　者：穆永超[1,2] 张于峰[1,3] 邓娜[1,3] 赵保明 贺中禄 董胜明[1] 

机构地区：[1]天津大学环境科学与工程学院,天津300072 [2]山西易通环能科技集团有限公司,长治047100 [3]天津大学中低温热能高效利用教育部重点实验室,天津300072

出　　处：《太阳能学报》2015年第12期3028-3033,共6页Acta Energiae Solaris Sinica

基　　金：国家重点基础研究发展(973)计划(2009CB219907)

摘　　要：利用低沸点有机工质BY-4,建立有机朗肯循环低温发电机组,并分别进行定冷却水和定热源进口温度两种工况实验。在实验的基础上,分析影响低温发电机组运行参数的主要因素。实验结果表明:机组蒸发压力和冷凝压力分别受热源进口温度和冷却水进口温度的影响。在相同膨胀比的工况下,热源进口温度越高,机组的发电功率越高。实验机组发电效率最高约8.05%,机组?效率约45%。A low-temperature power generation system on the basis of organic Rankine cycle was built using BYg as working fluid. The cycle performances of constant inlet temperatures of cooling water and heat source were compared, respectively. The main factors of affecting the low-temperature generation system were analyzed. The experimental results show that the evaporation pressure and the condensation pressure are affected by the heat source inlet temperature and the cooling water inlet temperature, respectively. In the same case of expansion ratio, the higher the inlet temperature of the heat source is, the higher power generation. The maximum power generation efficiency is up to 8.05%, and the highest value of exergy efficiency is 45%.

关 键 词：低温发电机组 有机朗肯循环(ORC) 螺杆膨胀机 膨胀比 (火用)效率 

分 类 号：X382.1[环境科学与工程—环境工程]