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
Influence of occupant behavior on the energy performance of variable refrigerant flow systems for office buildings: A case study
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DOI: 10.1016/j.jobe.2018.12.020
Abstract: Abstract Currently, the controversies on the energy saving potential of Variable refrigerant flow (VRF) systems compared with other heating, ventilation, and air conditioning (HVAC) systems for office buildings still exist. In this study, a VRF… read more here.
Keywords: office; variable refrigerant; energy performance; energy ... 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
Development of an Optimal Start Control Strategy for a Variable Refrigerant Flow (VRF) System
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DOI: 10.3390/en14020271
Abstract: In this study, an optimal control strategy for the variable refrigerant flow (VRF) system is developed using a data-driven model and on-site data to save the building energy. Three data-based models are developed to improve… read more here.
Keywords: variable refrigerant; strategy variable; control; control strategy ... See more keywords