THE ASSESSMENT OF CONVECTIVE COEFFICIENT OF HEAT TRANSFER IN EVAPORATORS WORKING WITH R 134a, USING KANDIKLAR EQUATIONS

Heat transfer devices play important roles in the improvement of refrigeration systems performance and for this reason their design is a challenge for engineers. This paper deals with the assessment of convective coefficient of heat transfer in evaporators from one stage vapor compression systems working with R 134a, using Kandiklar equations. The general simple equations for heat exchanger analysis are introduced inside tube refrigeration evaporation where heat transfer correlations for thermal design are given. The sizing methodology of these type of heat exchangers are briefly discussed and a thermal design exemple is presented. The heat exchanger design provides missing information based on experiences, judgment and the requirements of the customer.