HVAC Systems for Technicians That Quietly Fail in Real-World Conditions - Jamie Kitchen Part 1
About this episode
Gary McCreadie and Jamie Kitchen discuss refrigeration metering devices and their impact on HVAC systems in real-world conditions.
In this episode of the HVAC Know It All Podcast, host Gary McCreadie is joined by Jamie Kitchen , an HVAC expert, Training and Account Manager at Danfoss , to discuss refrigeration metering devices and how they control refrigerant flow. Jamie explains what a simple restriction is, how an orifice or piston works, and how flow is set by the size of the hole and the pressure difference across it. The conversation covers capillary tubes and why they self regulate through friction and flash gas, why cap tubes clog when a system runs hot, and why suction lines are sized larger than liquid lines. Gary and Jamie also explore how outdoor weather and humidity change the load, why pistons struggle with latent cooling, and how overcharging on a hot day can flood the compressor and destroy a scroll. In this conversation, Jamie explains what a simple restriction is and how fixed metering devices control refrigerant flow in cooling and refrigeration systems. He discusses how an orifice or piston works, how the size of the hole and the pressure difference set the flow, and how capillary tubes self regulate through friction and flash gas. Jamie and Gary explore topics such as why cap tubes clog…
People in this episode
Host: Gary McCreadie
Guest: Jamie Kitchen
Topics covered
- HVAC systems
- refrigeration metering devices
- refrigerant flow
- capillary tubes
- compressor flooding
- latent cooling
Keywords
- HVAC
- refrigeration
- metering devices
- orifice
- piston
- capillary tubes
- compressor
- latent cooling
- overcharging
Mentioned in this episode
Organizations: Danfoss
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