Abstract
To maintain the temperature setup on an air conditioner, the compressor will use more or less energy based on the outdoor temperature. Therefore, there is a need to understand the performance of the air conditioner if the outdoor temperature is varied. In this research, a used small capacity split-unit air conditioner using R-22 refrigerant is used to study the effect of outdoor temperature on the performance of the air conditioner. From the results, it can be understood that lower outdoor temperature requires less work from the compressor. The cooling capacity and coefficient of performance drop as the outdoor temperature increases.
Highlights
The air conditioner is commonly used to create a comforting environment inside buildings
An ideal refrigeration cycle can best be illustrated with a Pressure-Enthalpy (P-h) diagram as per Fig. 2 (a) [5]
An experiment setup consists of a split-unit air conditioner, and appropriate measurement tools to measure temperature and pressure was designed and fabricated to clarify the superheat and subcool
Summary
The air conditioner is commonly used to create a comforting environment inside buildings. The air conditioner is known to be one of the major electrical energy consuming appliance [1, 2]. In 2008, U.S Department of Energy reported that 40% of total U.S energy is consumed in commercial buildings and residential[3]. There are four main components involved: the compressor, condenser, a metering device (expansion device) and evaporator. These components are vital, and each has its own function to ensure the refrigerant completes its cycle to produce the desired cooling effect. An ideal refrigeration cycle can best be illustrated with a Pressure-Enthalpy (P-h) diagram as per Fig. 2 (a) [5]
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