Design and Comparison Study of Adsorption Bed Performance on Refrigeration System with Activated Carbon - R-134a Working Pairs

• Main Author: Jhonson, Benny
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/33706
• Institution: Institut Teknologi Bandung

Adsorption refrigeration system does not utilize electrical energy but only utilize heat energy from exhaust gas and solar cells to drive adsorption bed so its use can reduce electricity consumption of public and office buildings. Heat transfer performance of adsorption bed is very important in adsorption refrigeration cycle because it can affect the cycle performance. Therefore, this study is focused on the development of adsorption bed. The development of adsorption bed was done by designing adsorption bed type of plate heat exchanger and simulating the result of the design to the cycle. The calculation of the adsorption bed performance which was used for comparing the result of the design was done on activated carbon - R-134a working pair cycle with evaporator temperature variation 4°C, 6°C, 8°C, and 10°C. The result was validated by the experiment result that already exist. From the result of the research, it was found that adsorption bed design of heat exchanger plate-and-frame and plate-fin type can improve performance of the adsorption refrigeration system. The simulation confirmed that U greatly affected the SCP value. The SCP value of the adsorption cycle with double pipe adsorption bed was 3.50, while for the adsorption cycle with plate-and-frame and plate-fin adsorption bed were 7.30 and 14.42. The COP value of the adsorption cycle with double pipe adsorption bed was 0.190, while the adsorption cyle with plate-and-frame and plate-fin adsorption bed sequentially were showing 0.193 and 0.586. The SCP and COP values were evaluated on evaporator temperature cycle 4°C.