Abstract
This paper presents an experimental and analytical study on the inverter split-type air-conditioner for the purpose of energy saving and a proper balance between sensible and latent capacity. Performance of an inverter split-type air-conditioner is investigated at varied refrigerant mass flow rates, air volume flow rates, and set point temperatures. The performance investigated for a 2.54-kW inverter split-type air-conditioner includes cooling capacity, power consumption, the value of coefficient of performance (COP), and equipment sensible heat ratio (SHR). An increase of electrical frequency input to compressor from 34 to 66 Hz results in an increase of cooling capacity by 0.88 kW, a decrease of COP by 0.84, and a decrease of SHR by 0.11. An increase in cooling coil flow rate from 4.14 to 8.2 m3/min results in an increase in cooling capacity by 0.16 kW, an increase in COP by 0.10, and an increase in SHR by 0.15. An increase of set point temperature from 24 to 26°C results in an increase of the value of COP by 0.13 and a decrease of SHR by 0.03. The study offers guidelines for the application of small-size inverter split-type air-conditioners in hot and humid climates.
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