Udemy – VRV/VRF System Pipe Sizing

Course Title:

VRF / VRV System Design and Pipe Sizing (Daikin)

Module 1 – Introduction

• VRF (Variable Refrigerant Flow) definition
• VRV (Variable Refrigerant Volume) definition
• Terminology difference (VRV patented by Daikin)
• Applications & benefits
• One outdoor can connect >60 indoor units

Module 2 – Components & Refrigerants

• Compressors:
  • Digital Scroll Compressor
  • Inverter Scroll Compressor
  • Power frequency relation to compressor speed

  Module 3 – System Types

  • Cooling Only VRF
    • Variable speed scroll compressor
    • Electronic Expansion Valve (EEV)
    • Cooling or heating (not simultaneous)
    • Uses 4-way Reversion Valve & NRV
    • 3-pipe system
    • Cooling & heating simultaneously