Experimental Research on Performance of VRF-Based Household Radiant Air-Conditioning System
- 216 Downloads
Taking the variable refrigerant flow (VRF)-based household radiant air-conditioning (A/C) system as the research object, this paper established the experimental test platform of the VRF-based household radiant A/C system in an existed psychometric room, simulated winter and summer operating conditions, and conducted a performance test study of the system, to verify the stability of the VRF-based household radiant A/C system and obtain the relationship between the parameters of the system and the outdoor air temperature. The experimental results showed that the VRF-based household radiant A/C system could operate stably in both winter and summer experimental conditions. In summer mode, the total cooling capacity (TCC) of the system increased by 31.32%, as the outdoor air temperature varied from 29 to 43 ℃. Also, the electric power consumption of the VRF outdoor unit increased by 45.4%, and the system EER decreased to a minimum of 3.55. In winter mode, when the outdoor air temperature changed from 7 to −5 ℃, the total heating capacity (THC) of the system increased by 27.70%, while the electric power consumption of the VRF outdoor unit increased by 42.41%, and the system COP decreased to a minimum of 3.48.
KeywordsVRF Household radiant air-conditioning system Temperature and humidity Power consumption System stability
- 2.Lu, Y.: Practical Heating and Air Conditioning Design Manual. 2nd edn, Architecture & Building Press, Beijing, China (2007)Google Scholar
- 3.GB 50736-2012, Design code for heating ventilation and air conditioning of civil buildingsGoogle Scholar
- 4.Sui, X., Zhang, X.: Minimum fresh air requirement of air conditioning system for residential buildings in hot summer and cold winter zone. HVAC (10), 99–104 + 81 (2008)Google Scholar
- 6.GB/T7725-2004, Room air conditionersGoogle Scholar