摘要
对带喷射器的溴化锂吸收式第二类热泵循环进行热力计算和性能分析。带喷射器循环的最大特点是在溴化锂吸收式第二类热泵基本循环的基础上加上喷射器,将发生器出口的蒸汽引射到冷凝压力,因此新循环的发生压力可以较传统循环的压力低得多,从而使得新循环所需要的驱动热源温度要比传统循环低。此外,在相同的热源温度和其他外界条件下,新循环能够产出更高温度下的热量。理论研究结果显示,新循环在热源温度80℃和冷凝温度20℃的条件下,比单效第二类热泵循环吸收温度要高4℃以上。
A performance calculation of an ejection H20-LiBr absorption heat transformer system was made. The system was developed from the single-effect absorption heat transformer, and added an ejector to get the pressure in generator lower than that of single-effect absorption. So the system can produce higher temperature energy, and the required temperature of driven heat source can be lower. The calculation re- sults show that when the temperature of heat source is 80 ~C and condensing temperature is 20 ~C , the ab- sorption temperature is at least 4 ~C higher than the single-effect absorption heat transformer.
出处
《低温工程》
CAS
CSCD
北大核心
2012年第1期19-24,共6页
Cryogenics
基金
国家自然科学基金(NO.50890184)
国家重点基础研究发展计划项目(NO.2010CB227304)资助
关键词
第二类热泵
吸收式
溴化锂
喷射
absorption heat transformer
absorption
H2O-LiBr
ejection
