Some cooling coils use refrigerant systems with thermal expansion valves instead of chilled water; refrigerant lines split and branch to multiple coils with thermal bulbs at the bottom to meter refrigerant flow and control cooling.

factualpending

Speaker

Unidentified Speaker — Fundamentals of HVAC - Basics of HVAC [klggop60vlM]

Evidence Quote

The cooling cause might also be provided Cooling cool by a refrigerant system, and they were going to look something like this These are just the thermal expansion valves. They're running down with the thermal bulb down at the bottom here... the refrigerant lines coming in and splitting off and going to each of the The coils

Source

Fundamentals of HVAC - Basics of HVACThe Engineering Mindset
Created: 8/13/2026, 4:57:53 AM

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