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Evgenii KonkinApr 13, 2026 • 9 min read
How to Calculate Air Changes per Hour: A Practical Guide for HVAC Ventilation Design and Code Compliance
Introduction Inadequate ventilation design leads directly to indoor air quality failures,...
#airchangesperhour#achcalculation#hvacventilation#ashraestandards
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Evgenii Konkin6d ago • 9 min read
How to Calculate Air Density: Essential Methods for HVAC System Design and Performance Analysis
Introduction Neglecting accurate air density calculations leads directly to HVAC system...
#airdensity#hvacengineering#ashraestandards#systemperformance
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Evgenii Konkin5d ago • 10 min read
How to Calculate Aircraft Hangar Heating Load: A Practical Guide for High-Bay Space HVAC Design
Introduction Aircraft hangar heating design errors lead directly to operational failures...
#aircrafthangarheating#hvacengineering#ashraestandards#nfpa409
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Evgenii Konkin5d ago • 9 min read
How to Calculate Air Velocity: Practical Methods for HVAC Duct Design and Performance Analysis
Introduction In HVAC system design, incorrect air velocity calculations lead directly to...
#airvelocity#hvacengineering#ductdesign#ashraestandards
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Evgenii Konkin6d ago • 3 min read
The Engineering Math Behind HVAC Sizing: Deconstructing the Cooling Load Formula
A typical office worker generates about 120 watts of heat—equivalent to a bright incandescent...
#coolingloadcalculation#hvacengineering#ashraestandards#systemsizing
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Evgenii KonkinApr 13, 2026 • 3 min read
The Engineering Math Behind Commercial Kitchen Energy Recovery: Applying Sensible Heat Transfer Analysis for Feasibility Screening
A 4,000 CFM commercial kitchen exhaust system operating at 110°F with 30°F outdoor air contains...
#commercialkitchenenergyrecover#hvacengineering#ashraestandards#heatexchangereffectiveness
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Evgenii Konkin1d ago • 4 min read
The Engineering Math Behind HVAC Duct Sizing: Decoding the Airflow-Velocity Relationship
Did you know that properly sized ducts can improve HVAC energy efficiency by 10–30%? That's not just...
#ductsizing#hvacengineering#airflowcalculation#ashraestandards
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Evgenii Konkin5d ago • 3 min read
The Engineering Math Behind Dairy Barn Cooling: Decoding ASHRAE's Animal Heat Production Models
A single lactating dairy cow produces about 2,800 BTU/h of total heat at 68°F—equivalent to the heat...
#dairybarncooling#animalheatload#ashraestandards#hvacengineering
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Evgenii Konkin17h ago • 4 min read
The Engineering Math Behind Duct Velocity: From Airflow to Airspeed in HVAC Systems
Did you know that air moving at 2,000 FPM through a 12-inch round duct generates approximately 60...
#ductvelocity#hvacengineering#ductdesign#ashraestandards
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