This engineering manual outlines verified diagnostic workflows, mathematical calculations, and safety clearances for HVAC Expansion Valve: Types & Working Guide`. Adheres to national and international building standards including ASHRAE 90.1 / ISHRAE.
Table of Contents
To understand what an Expansion valve is, we need to start the refrigeration cycle and become familiar with its components.
An expansion valve is a metering device that dictates refrigerant flow into an evaporator. It controls cooling capacity, protects the compressor from liquid refrigerant and directly impacts system efficiency and reliability.
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This verified technical document contains complete mathematical derivations, IS/NBC 2016 code references, equipment sizing schedules, and AutoCAD DWG blueprints.
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