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The Inches Water Column (inWC) to Pounds Per Square Inch (PSI) conversion is used to convert pressure measurements between these two common units. Inches water column is often used in HVAC, gas pressure measurements, and low-pressure applications.
The calculator uses the conversion formula:
Where:
Explanation: This conversion factor is derived from the relationship between water column height and pressure, where 1 inch of water column equals approximately 0.036091 PSI at standard conditions.
Details: Accurate pressure unit conversion is essential in various engineering fields, including HVAC systems, gas distribution, industrial processes, and scientific research where different pressure units are used.
Tips: Enter the inches water column value in the input field. The value must be positive and greater than zero. The calculator will automatically compute the equivalent PSI value.
Q1: What is inches water column (inWC)?
A: Inches water column is a unit of pressure measurement that represents the pressure exerted by a column of water one inch high at standard conditions.
Q2: Where is inWC commonly used?
A: It's commonly used in HVAC systems, natural gas pressure measurements, ventilation systems, and low-pressure applications.
Q3: How accurate is this conversion?
A: The conversion factor 0.036091 is accurate for standard conditions (4°C water temperature, standard gravity). For precise scientific applications, temperature and local gravity corrections may be needed.
Q4: Can I convert PSI back to inWC?
A: Yes, to convert PSI to inWC, use the formula: inWC = PSI ÷ 0.036091 or inWC = PSI × 27.7076.
Q5: What are typical inWC values in HVAC applications?
A: Typical residential gas pressure is 3.5-7 inWC for natural gas and 11 inWC for propane. Air pressure in duct systems is often measured in inches water column.