Psychrometric

Research

Latent Load Underestimation in Indian Commercial: Psychrometric Mismatch Between Design and Operation Across 9 Buildings

Field-measured psychrometric performance was studied across 9 Indian commercial buildings over 24 months. Design vs operation comparison reveals systematic latent load under-estimation: design SHR 0.78-0.85 vs measured 0.62-0.75, a 12-18% absolute deviation. Indian-tropical OA at…

HVAC

Outside Air + Return Air Mixing: A Psychrometric Process Walk-Through

Every mixed-air AHU does the same psychrometric thing: combine return air with outdoor air upstream of the cooling coil. The mixing point determines the entering coil condition, which determines the c

HVAC

Psychrometrics for Tropical India: The SHR Reality Check Most Designs Miss

The Sensible Heat Ratio (SHR) of a space cooling load is a single number that tells you whether your AHU will actually maintain humidity. Indian designs frequently miss this. SHR = 0.85 looks fine on

HVAC

From Cooling Load to AHU and Coil Selection: The Psychrometric Bridge

You have a cooling load. Now what? The number on a calc sheet doesn’t size an AHU coil — the psychrometric process between the room and the cooling coil does. This article walks through the bridge: ho

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