Open AccessFACTORS AFFECTING REFRIGERATOR-FREEZERS ENERGY CONSUMPTION
Author(s) -
R. Saidur,
H.H. Masjuki,
T.M.I. Mahlia,
Abd Rahim Nasrudin
Publication year - 2017
Publication title -
asean journal on science and technology for development/asean journal on science and technology for development
Language(s) - English
Resource type - Journals
eISSN - 2224-9028
pISSN - 0217-5460
DOI - 10.29037/ajstd.338
Subject(s) - thermostat , refrigerator car , energy consumption , consumption (sociology) , sensitivity (control systems) , energy expenditure , energy (signal processing) , environmental science , thermodynamics , mathematics , engineering , statistics , physics , electrical engineering , medicine , social science , electronic engineering , endocrinology , sociology
Two frost-free household refrigerator-freezers, one with 492 liter capacity and one with 460 liter capacity were tested in the laboratory to determine the sensitivity of several variables those influence consumption refrigerator-freezers energy consumption greatly. The effects of single variables such as room temperature, thermostat setting positions, and door openings on the energy consumption were investigated. Using Response Surface Methodology (RSM), a mathematical model has been developed to investigate the combined effect of room temperature, thermostat setting positions, and door opening on the energy consumption of refrigerator-freezers. From the mathematical model, it has been observed that room-temperature has the highest effect on the energy consumption followed by the thermostat setting position. The door opening has lowest on the energy consumption. More detailed tests were performed under different room temperature, thermostat setting positions, and door opening conditions and presented in this paper.