Performance Analysis of Adsorption Chiller Using a Test Bench Model /

Abstract

The significance of cooling in the context of human existence is indisputable. The refrigeration and air conditioning (RAC) industry has gradually grown essential for various aspects of human well-being, including health, food supplies, and the provision of a comfortable atmosphere under extreme weather conditions. The need for cooling on a global scale is projected to experience a substantial increase in the forthcoming decades. This surge can be attributed to factors such as population growth, urbanization, and the expansion of food chains, particularly in emerging economies. The growing global demand for refrigeration, air conditioning (RAC), and the associated environmental and energy concerns have prompted a call for the development of efficient, cheap, and environmentally friendly cooling solutions. The objective of this project is to implement a solar thermal driven adsorption chiller and assess its operational effectiveness through the incorporation of a testing apparatus within the system. Adsorption chillers have the capability to efficiently operate by utilizing low- grade heat sources that are below 80°C, hence avoiding the need for refrigerants that contribute to carbon emissions and global warming. The installation involved the utilization of a commercially available Adsorption Chiller with a capacity of 4.79 Tons. The findings of the study indicate that the average cooling capacity varied between 0.9 kW and 5.32 kW. The maximum coefficient of performance (COP) observed was 0.32. These results were obtained by manipulating the inlet temperature within the range of 50°C to 65°C, while adjusting the flow rate between 0.23 kg/s and 0.27 kg/s for the high temperature line, and between 0.23 kg/s and 0.25 kg/s for the low temperature line. The present study emphasizes the capacity of adsorption chillers to utilize underutilized heat sources and enhance energy efficiency while mitigating environmental consequences. The findings of this research have the potential to make a valuable contribution towards the advancement of more effective and environmentally friendly cooling systems. These systems can play a crucial role in addressing climate change and fostering sustainable development.