DESIGN AND DEVELOPMENT OF PIERCING VALVE FOR HVAC/R APPLICATION
Researcher: Edgar Q. Manto
Abstract
The project study/thesis entitled “Design and Development of Piercing Valve for HVAC/R Application” is conducted to be used in accessing refrigerant in the refrigeration system for recovery recycling of refrigerant. RAC servicing sector is required to do recovery/recycling in compliance to the Montreal Protocol. The project has a valve assembly composed of screwed needle, gasket and fitting, valve gasket, V-saddle that carry the tube, handle, and presser to make the installation easier. All parts play vital role to the performance of the hand tool. This tool can be used in both aluminum and copper tube and both soft drawn and hard drawn tubing with the diameter of 3/16 to ½ inches diameter tubing. This was conducted in Lupon School of Fisheries, Lupon Davao Oriental. It was tried, tested, and evaluated by the students in RAC qualification, Refrigeration and Air-conditioning Servicing practitioner and Teacher/Instructor/Trainer with the knowledge in the same field. During testing it was found out that the developed hand tool is time efficient as it obtained an average weighted mean of 17.32 seconds with a standard deviation of 3.13, and it is highly functional and better than the existing one it has a mean of 4.7 and belong to level 4.2 up in the likert scale. It was also found out that there was a minimal pressure lost in the refrigeration system that the researcher came up with a recommendation to conduct further study for the improvement of the project in terms of design and functionality.
Keywords: Piercing Valve, descriptive and developmental research, Lupon, Davao Oriental.
