A review of recent advancements of variable refrigerant flow air-conditioning systems
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DOI: 10.1016/j.applthermaleng.2019.114893
Abstract: Abstract Variable refrigerant flow air-conditioning (VRF) systems are important and widely used building energy systems around the world. This study reviews recent developments of the VRF systems in system architecture development, modeling, experiment, control strategies,… read more here.
Keywords: variable refrigerant; flow air; air; refrigerant flow ... See more keywords
Methods for performance metering of indoor units in variable refrigerant flow systems based on built-in sensors
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DOI: 10.1016/j.applthermaleng.2021.117268
Abstract: Abstract In variable refrigerant flow (VRF) systems with multiple indoor units, individual energy metering (IEM) not only contributes to a fair charge for the tenants, thus avoiding their complaints on the charging fee, but also… read more here.
Keywords: methods performance; indoor units; performance metering; variable refrigerant ... See more keywords
Prediction of thermal potentials of multi-panel refrigerant heated radiator based on a mathematical model considering refrigerant flow distribution
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DOI: 10.1016/j.enbuild.2020.110446
Abstract: Abstract The refrigerant-heated radiator (RHR) is an efficient and feasible heating terminal for space heating. In order to improve the efficiency of RHR, a multi-panel RHR was proposed in this paper. To investigate the thermal… read more here.
Keywords: rhr; multi panel; model; panel rhr ... See more keywords
Mode switching control for a multi-functional variable refrigerant flow system
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DOI: 10.1080/23744731.2017.1406275
Abstract: The multi-functional variable refrigerant flow system enables simultaneous heating and cooling of the zones it serves by allowing the heat exchangers of both indoor units and outdoor units to operate as evaporators or condensers. To… read more here.
Keywords: variable refrigerant; flow system; mode switching; multi functional ... See more keywords