Experimental and theoretical performance analysis of the silica gel, LiCl with water, methanol multifunction adsorption system

Abstract

Summary The world is facing the ever‐worsening issues of global warming. The results show that the physical‐/chemical‐adsorbent water can improve the adsorption capacity of 1.22 kg/kg. If water is used as the adsorbate, the adsorbent has a serious issue of corrosion. So, methanol is utilized. However, methanol just can be heated by low‐temperature heat, because methanol will be broken down in above 140°C adsorption system. The multifunction adsorption system can produce one cold effect output and two power generation outputs. The results show that the silica gel/LiCl‐methanol multifunction adsorption system has a higher cooling exergy efficiency of 0.25 and a higher total system exergy efficiency of 0.87 compared with that of the silica gel‐water system.

Evaporator Performance for Water Refrigerant Adsorption Cooling System

“…In this experiment, an adsorber, condenser, evaporator, and expansion valve are used as the main system components for it to run as a complete adsorption cooling system. Silica gel is used together with water as an adsorbent-refrigerant working pair due to its environmental-friendly characteristics, low-cost material, and ease of operation [20]. Moreover, the water-silica gel pair is also chosen due to its promising adsorption uptake rate and the good of increasing adsorption capacity [21]- [23].…”