Thursday, April 23, 2020

Variable Refrigerant Flow (VRF) Systems







TABLE OF CONTENTS :-

INTRODUCTION
VRF TECHNOLOGY 
ADVANTAGES OF A VRF SYSTEM.
  • Control Means Comfort.
  • Design Flexibility .
  • Cost Effective Installation.
  • Energy Savings.
COMPARISON OF VRF SYSTEMS
  • Single Variable Speed Compressor.
  • Variable Speed Compressor Plus Fixed-Speed Compressor.
  • Multiple Variable Speed Compressors.
  • Twin Rotary Compressor vs Scroll Compressor.

DESIGN CONSIDERATIONS.
  • Space Layout .
  • Type of System – Heat Recovery or Heat Pump?
  • Size of Units.
  • Piping Configuration.
CONCLUSION.





INTRODUCTION
Variable refrigerant flow (VRF) systems vary the flow of refrigerant to indoor units based on demand. This ability to control the amount of refrigerant that is provided to fan coil units located throughout a building makes the VRF technology ideal for applications with varying loads or where zoning is required.

VRF systems are available either as heat pump systems or as heat recovery systems for those applications where simultaneous heating and cooling is required.

In addition to providing superior comfort, VRF systems offer design flexibility, energy savings, and cost effective installation.

This paper will outline the benefits of a typical VRF system, describe the advantages offered by the most advanced outdoor units available, and provide general guidelines for selecting a heat pump system versus a heat recovery system.






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