Development and Efficiency of Experimental Inverter Air Conditioner System
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Abstract
The objectives of this research were: (1) to develop and determine the efficiency of an inverter air conditioning system training unit, and (2) to study student learning achievement and satisfaction towards the developed training unit. The sample group consisted of 30 undergraduate students enrolled in the Refrigeration and Air Conditioning course. The research instruments included the inverter air conditioning training unit with accompanying laboratory manuals, a learning achievement test, and a satisfaction questionnaire. Data were analyzed using mean, standard deviation, dependent samples t-test, and the E1/E2 efficiency formula.The results of the research revealed that: (1) the efficiency of the developed inverter air conditioning training unit was 80.08/83.33, which met the established 80/80 criteria; (2) the students' post-test scores were significantly higher than their pre-test scores at a 0.01 level of statistical significance; and (3) the students’ satisfaction with the training unit and the learning method was at a high level. These findings indicate that the developed training unit is an effective instructional tool for practical application in related courses.
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References
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