Experimental Study of Heat and Mass Transfer on an Absorber with Several Enhancement Tubes; Absorption chiller/heater; alling film absorber; bare tube; floral tube; twisted floral tube; bumping bare tube; heat and mass transfer

摘要

An experimental study of the absorption process of water vapor into a lithium bromide solution was performed. For the purpose of the development of a high-per- formance absorption chiller/heater utilizing a lithium bromide solution as the working fluid, it is the most effective way to improve the Performance of the absorber with the largest heat transfer area of the four heat exchangers. This paper considers a bare tube, bumping bare tube, floral tube, and twisted floral tube for the absorber of an absorption chiller/heater. The floral and twisted floral tubes have about 4o/100 higher heat and mass transfer Performance than the bare tube conventionally used in an absorber. Therefore, floral and twisted floral tubes are expected to realize high heat and mass transfer performance.