摘要
建立了一套5 kW溴化锂高温吸收式热变换器实验样机,其最高输出可用热温度超过200℃,温升大于40℃。实验考察了蒸发温度、再生温度、吸收温度和系统温升对系统性能系数COP的影响,其主要部件在150 205℃以高温高压操作,并辅以表面抗蚀技术,有效减缓了溴化锂溶液的腐蚀作用。实验结果表明,随着蒸发温度增加,COP增加;随着再生温度增加,COP先增加后略微减小;随着吸收温度增加,COP先增加后减小;COP随着系统温升增加而减小。
A prototype of 5 kW high temperature absorption heat transformer operating with water/lithium bromide mixture was built, in which the temperature of output fluid is over 200℃ and gross temperature lift （GTL） is over 40℃. The effects of operating temperatures of evaporator, generator and absorber, and gross temperature lift （GTL） on the coefficient of performance （COP） of the system were investigated experimentally. The patented technology of anticorrosion was used to reduce the corrosion effect of the lithium bromide solution at high temperature （150-205℃） and high pressure. The experimental results show that the COP increases with the increase of the evaporating temperature, and increases firstly and then decreases lightly with the increase of generating temperature, and increases firstly and then decreases with increasing the absorbing temperature, and decreases with the increase of GTL.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2012年第6期911-916,共6页
Journal of Chemical Engineering of Chinese Universities
基金
国家自然科学基金(NSFC-51176018)
关键词
吸收式热变换器
高温
热力学
溴化锂溶液
absorption heat transformer
high temperature
thermodynamics
LiBr solution
