Coupling of lithium bromide absorption cycle inside and outside thermal physical parameters and refrigeration unit characteristics

LiBr absorption refrigeration units are paid more attention in the areas of energy saving and environmental protection because of its zero pollution,low energy consumption,stable operation and multi-function energy modes,etc.But LiBr refrigeration technology application is limited by its low refrigeration efficiency.The cooling property of LiBr refrigeration unit is analyzed by experiments,which is based on the balance of liquid phase and vapor phase in the liquor mixed by LiBr and H2O as well as the parameters of the refrigeration unit are modulated in the refrigeration circle.The experiments prove that evaporation temperature,the concentration of the LiBr liquor and the absorption pressure could improve the cooling capacity and the COP of the refrigeration which are impacted mostly by the absorption pressure and the absorption pressure could improves the COP by 100%,on the contrary,the upper temperature of the cooling water of the LiBr refrigeration unit,the lower cooling capacity and COP.Therefore,the proper setup of thermal properties in the refrigeration circle could improve the refrigeration character.