HVAC Calculation
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HVAC
Kitchen Exhaust Hood CFM Calculation and Grease Duct Design (NFPA 96 and IMC)
How to calculate commercial kitchen hood exhaust CFM, size the grease duct to NFPA 96 and set make-up air, with…
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HVAC
VAV Box Sizing and Selection: Airflow, Inlet Size and Minimum Flow Explained
How to size and select a VAV box step by step, from zone airflow and minimum flow to inlet size,…
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HVAC
Expansion Tank Sizing for Chilled Water Systems: Formula and Worked Example
How to size a diaphragm expansion tank for a closed chilled water system, with fill and maximum pressures, the ASHRAE…
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HVAC
Chilled Water Pump Head Calculation: Step-by-Step Guide with Worked Example
How to calculate chilled water pump head for closed-loop systems step by step, with typical pressure drops and a full…
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HVAC
External Static Pressure (ESP) Calculation for AHU and FCU: Step-by-Step Guide
External static pressure (ESP) is the number you put on every AHU and FCU schedule, and getting it wrong shows…
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