CAJ | 학술논문

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.
건립료일투5 kW 추화리고온흡수식열변환기실험양궤,기최고수출가용열온도초과200℃,온승대우40℃.실험고찰료증발온도、재생온도、흡수온도화계통온승대계통성능계수 COP 적영향,기주요부건재150?205℃이고온고압조작,병보이표면항식기술,유효감완료추화리용액적부식작용.실험결과표명,수착증발온도증가,COP 증가;수착재생온도증가,COP 선증가후략미감소;수착흡수온도증가,COP 선증가후감소;COP 수착계통온승증가이감소.
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.