Abstract: An independent earth cooling system worked well for space cooling in summer mainly using renewable ground heat sink in some outdoor air conditions. But for hot climates, earth cooling air may not meet comfortable air conditioning standard. Thus a new air conditioning system, i. e. , earth cooling system combined with adsorption dehumidifier was presented in this paper. An adsorption dehumidifier was coupled before earth cooling system to dehumidify air beforehand. Thermodynamic analysis was also made for comparison of the performance of the systems with or without adsorption dehumidifier on different outdoor air conditions. Results show that the performance and reliability of the earth cooling combined system with adsorption dehumidifier are greatly improved as compared with the independent earth cooling system.

Key words: renewable energy resource, thermodynamic analysis, adsorption dehumidification, earth cooling