Developing and Finding Efficiency of F11 Recycling-through-distillation Machine

Abstract

The objectives of this research were to: 1) design and build an F11 (air conditioner flushing liquid) recycling-through-distillation machine, 2) test and determine the efficiency of the F11 recycling-through-distillation machine, and 3) study the users' satisfaction towards the F11 recycling-through-distillation machine. The target group in the experiment consisted of 20 automotive air-conditioning technicians in a firm repairing office air conditioners and car air conditioners in Mueang District, Songkhla Province derived by purposive sampling method. The research tools included an experimental record form and satisfaction questionnaires calculated by percentage, mean, and standard deviation. The research results revealed that: 1) the developed machine can recycle F11 through the distillation method. Two systems for controlling the operation of the machine include manual and automatic system with both the F11 liquid recycling system and the distillation system are installed in the same machine. 2) The efficiency of the F11 recycling-through- distillation machine was as follows. (1) In terms of the structure, the machine consisted of F11 liquid pump system, hot water boiler system, cooling system, and distillation system which worked properly in normal conditions calculated as 100 percent efficiency. (2) Regarding the distillation and recycling of F11 liquid, it was found that the amount of F11 put in the boiler was 6,000 ml. With the received recycling amount of 4,190 ml accounting for 70 percent at 1,800 ml loss or 30 percent. 3) Finally, the overall satisfaction of the F11 recycling-through-distillation machine was at the highest level.