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Evgenii Konkin5d ago • 3 min read
The Engineering Math Behind CRAC Unit Sizing: Load Summation and Margin Analysis for Data Center Cooling
A typical 42U server rack with 10kW IT load generates enough heat to warm a 1,500 square foot home i...
#cracsizing#datacentercooling#ashraetc99#hvacengineering
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Evgenii Konkin6d ago • 4 min read
The Engineering Math Behind Cooling Tower Efficiency: Wet-Bulb Limited Thermal Performance Analysis
A cooling tower operating with 95°F entering water, 85°F leaving water, and 78°F wet-bulb temperatur...
#coolingtowerefficiency#hvacengineering#ashrae901#condenserwatersystems
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Evgenii KonkinApr 13, 2026 • 9 min read
How to Calculate Server Rack Heat Load: A Practical Guide for Data Center HVAC Design
Introduction Incorrect server rack heat load calculation leads directly to cooling system...
#serverrackheatload#datacentercooling#ashraethermalguidelines#hvacengineering
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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 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 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 Konkin3d ago • 4 min read
The Engineering Math Behind District Heating Pipe Loss: Decoding Cylindrical Thermal Resistance for Distribution Efficiency
A bare steel pipe carrying 90°C water loses about 250 W/m—enough to heat a small room. That's 10-20....
#districtheating#pipeheatloss#thermalresistance#hvacengineering
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Evgenii Konkin2d ago • 4 min read
The Engineering Math Behind Duct Friction Loss: Deconstructing the Darcy–Weisbach Equation with Swamee–Jain
Did you know that a typical residential HVAC system with 1,200 CFM airflow through a 12-inch diamete...
#ductfrictionloss#hvacengineering#darcyweisbach#accamanuald
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Evgenii Konkin3d ago • 4 min read
The Engineering Math Behind Dew Point Temperature: From Vapor Pressure to Condensation Threshold
Did you know that air at 25°C (77°F) with 60% relative humidity has a dew point of 16.7°C (62°1°F)?....
#dewpointcalculation#hvacengineering#condensationrisk#psychrometrics
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Evgenii Konkin4d ago • 4 min read
The Engineering Math Behind Daylight Factor Calculations: From Lux Ratios to Building Performance
Did you know that a daylight factor of just 2% can mean the difference between a room feeling...
#daylightfactor#daylightingdesign#hvacengineering#iesstandards
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Evgenii Konkin1d ago • 4 min read
The Engineering Math Behind Duct Pressure Drop: Decoding Darcy-Weisbach with Swamee-Jain for HVAC Systems
In a typical residential HVAC system, a 0.1-inch water gauge pressure drop across a 50-foot duct run...
#ductpressuredrop#hvacengineering#darcyweisbach#accamanuald
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Evgenii Konkin1d ago • 4 min read
The Engineering Math Behind Duct Insulation Loss: Cylindrical Conduction for HVAC Systems
A typical 10-meter duct section with 25mm insulation can lose over 500 watts of heat when there's a....
#ductinsulationloss#hvacengineering#heattransfercalculation#energyefficiency
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Evgenii KonkinApr 14, 2026 • 3 min read
The Engineering Math Behind Cool Roof Energy Savings: Breaking Down the Reflectance Difference Formula
A cool roof can reduce peak cooling demand by up to 15%—but how do we quantify that energy reduction...
#coolroofenergysavings#solarreflectance#hvacengineering#ashrae901
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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 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 Konkin6d ago • 3 min read
The Engineering Math Behind Cooling Tower Performance: Decoding Approach vs. Range
A cooling tower that leaves water just 5°F above the wet-bulb temperature is operating at...
#coolingtowerapproach#hvacengineering#ashrae901#condenserwatersystems
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Evgenii Konkin14h 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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Evgenii Konkin4d ago • 4 min read
The Engineering Math Behind Deaerator Venting: Calculating Steam Loss and Oxygen Removal Balance
A deaerator venting at just 0.5% of steam load might seem efficient, but that tiny opening could...
#deaeratorventrate#steamlosscalculation#boilerfeedwater#hvacengineering
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