Evgenii Konkin

Cover image for Why Voltage Drop Problems Start Long Before the Cable Is Installed

Evgenii Konkin

May 6

Why Voltage Drop Problems Start Long Before the Cable Is Installed

2 min read

Cover image for Why Most Ventilation Systems Are Wrong Before They’re Even Built

Evgenii Konkin

May 3

Why Most Ventilation Systems Are Wrong Before They’re Even Built

#hvac #engineering #ventilation #buildings

2 min read

Evgenii Konkin

Apr 30

The Engineering Math Behind Grease Duct Sizing: From Airflow to Duct Diameter

#greaseductsizing #commercialkitchenexhaust #typeihood #nfpa96

2 min read

Evgenii Konkin

Apr 29

The Engineering Math Behind Grain Dryer Airflow: From CFM/bu to Fan Selection

#graindryerairflow #fansizing #graindrying #agriculturalventilation

3 min read

Evgenii Konkin

Apr 29

The Engineering Math Behind Glycol Concentration: Formulas, Worked Examples, and Common Pitfalls

#glycolconcentration #freezeprotection #hvachydronics #propyleneglycol

3 min read

Evgenii Konkin

Apr 28

The Engineering Math Behind GFCI Protection Classification: A Rule-Based Approach for NEC Compliance

#gfciprotection #nec2108 #groundfaultcircuitinterrupter #electricalcodecompliance

3 min read

Evgenii Konkin

Apr 28

The Engineering Math Behind Geothermal Loop Length: From Load to Loop Field

#geothermallooplength #groundheatexchangersizing #closedloopgeothermal #gshpdesign

3 min read

Evgenii Konkin

Apr 28

The Engineering Math Behind Generator Sizing: Screening Running Load with Sizing Factor

#generatorsizing #electricalengineering #preliminarygeneratorcapacity #runningloadscreening

2 min read

Evgenii Konkin

Apr 27

The Engineering Math Behind Generator Fuel Consumption: Screening Hourly Fuel-Use Rate for Preliminary Planning

#generatorfuelconsumption #dieselgeneratorfueluse #generatorfuelplanning #generatorsizing

3 min read

Evgenii Konkin

Apr 27

The Engineering Math Behind Fume Hood Face Velocity: Calculating Laboratory Hood Performance with Airflow and Sash Opening

#fumehoodfacevelocity #laboratoryventilation #ashrae110 #hoodcontainmentscreening

3 min read

Evgenii Konkin

Apr 27

The Engineering Math Behind Fuel Oil Tank Sizing: Consumption-Based Storage for Oil-Fired HVAC Systems

#fueloiltanksizing #fuelstoragecalculation #oilfiredhvac #nfpa31

3 min read

Evgenii Konkin

Apr 26

The Engineering Math Behind Flash Tank Sizing: Vapor Volumetric Flow Method

#flashtanksizing #refrigerationengineering #vaporliquidseparation #ashraerefrigeration

3 min read

Evgenii Konkin

Apr 26

The Engineering Math Behind CT Burden: How Secondary Circuit Resistance Squared Affects Protection Accuracy

#ctburden #currenttransformerburden #secondarycircuit #protectionaccuracy

2 min read

Evgenii Konkin

Apr 26

The Engineering Math Behind Cogeneration CHP Sizing: From Thermal and Electrical Loads to System Capacity

#cogenerationsizing #chpsizing #combinedheatandpower #thermalelectricmatching

3 min read

Evgenii Konkin

Apr 25

The Engineering Math Behind Capacitor Sizing for Power Factor Correction: Deriving the kVAR Formula Step by Step

#capacitorsizing #powerfactorcorrection #kvarcalculation #reactivepowercompensation

2 min read

Evgenii Konkin

Apr 25

The Engineering Math Behind Capacitor RC Timing: From Natural Logs to Circuit Design

#capacitorchargetime #rctimeconstant #capacitordischargecalculation #firstorderrccircuit

3 min read

Evgenii Konkin

Apr 25

The Engineering Math Behind Power Factor Correction: Capacitor Bank Sizing

#capacitorbankcalculation #powerfactorcorrection #kvarcalculation #reactivepowercompensation

2 min read

Evgenii Konkin

Apr 24

The Engineering Math Behind Cable Tray Ventilation Ratio: Open-Area Screening for Thermal Design

#cabletrayventilation #cabletrayopenarea #nec392 #thermalscreening

3 min read

Evgenii Konkin

Apr 24

The Engineering Math Behind Cable Ampacity: Applying Correction and Adjustment Factors for Conductor Screening

#cableampacity #conductorsizing #necampacity #correctionfactor

3 min read

Evgenii Konkin

Apr 24

The Engineering Math Behind Cable Tray Fill: Area Screening for NEC Compliance

#cabletrayfill #nec392 #traysizing #sparecapacity

3 min read

Evgenii Konkin

Apr 23

The Engineering Math Behind Cable Pulling Tension: Straight-Run Screening for Conduit Installation

#cablepullingtension #conduitinstallation #straightpullcalculation #electricalengineering

2 min read

Evgenii Konkin

Apr 23

The Engineering Math Behind Fan Power: From CFM to Horsepower

#fanpowercalculation #hvacengineering #motorsizing #fanefficiency

3 min read

Evgenii Konkin

Apr 23

The Engineering Math Behind Fan Laws: Decoding the Affinity Laws for HVAC System Analysis

#fanlaws #affinitylaws #hvacengineering #vfdsizing

4 min read

Evgenii Konkin

Apr 22

The Engineering Math Behind Fan Efficiency: Decoding the Power Conversion Formula for HVAC Systems

#fanefficiency #hvacengineering #energyefficiency #ashraestandards

3 min read

Evgenii Konkin

Apr 22

The Engineering Math Behind Enthalpy Calculations: From Psychrometric Formulas to Coil Load Determination

#enthalpycalculation #hvacengineering #psychrometrics #ashraestandards

4 min read

Evgenii Konkin

Apr 22

The Engineering Math Behind Battery Runtime: Decoding the DC Load Duration Formula

#batteryruntime #electricalengineering #dcbackup #batterysizing

4 min read

Evgenii Konkin

Apr 21

How to Calculate Raised Floor Pressure Drop: A Guide for HVAC Engineers

#hvac #engineering #calculator #technicalguide

5 min read

Evgenii Konkin

Apr 21

The Engineering Math Behind Battery Sizing: Deconstructing the Amp-Hour Calculation

#batterycapacity #electricalengineering #dcbackup #batterysizing

4 min read

Evgenii Konkin

Apr 21

The Engineering Math Behind Energy Recovery Wheels: Decoding ASHRAE Effectiveness Formulas

#energyrecoverywheel #enthalpywheel #ashraeeffectiveness #hvacengineering

4 min read

Evgenii Konkin

Apr 21

How to Size a Dust Collection System: Airflow Requirements & Design

#hvac #engineering #calculator #technicalguide

5 min read

Evgenii Konkin

Apr 21

The Engineering Math Behind Elevator Machine Room Cooling: Deconstructing Sensible Heat Load Calculations with Safety Margins

#elevatormachineroomcooling #hvacengineering #sensibleheatload #ashraestandards

4 min read

Evgenii Konkin

Apr 20

How to Calculate District Heating Pipe Loss: A Professional Guide

#hvac #engineering #calculator #technicalguide

5 min read

Evgenii Konkin

Apr 20

The Engineering Math Behind Dust Collection Sizing: Airflow Summation with Fixed Margin

#dustcollectionsystemsizing #industrialventilation #airflowcalculation #hvacengineering

3 min read

Evgenii Konkin

Apr 20

The Engineering Math Behind Duct Velocity: From Airflow to Airspeed in HVAC Systems

#ductvelocity #hvacengineering #ductdesign #ashraestandards

4 min read

Evgenii Konkin

Apr 20

How to Calculate Specific Volume of Air for HVAC System Design

#hvac #engineering #calculator #technicalguide

6 min read

Evgenii Konkin

Apr 20

The Engineering Math Behind HVAC Duct Sizing: Decoding the Airflow-Velocity Relationship

#ductsizing #hvacengineering #airflowcalculation #ashraestandards

4 min read

Evgenii Konkin

Apr 19

How to Calculate Makeup Air Unit Heating Load: HVAC Engineering Guide

#hvac #engineering #calculator #technicalguide

5 min read

Evgenii Konkin

Apr 19

The Engineering Math Behind Duct Pressure Drop: Decoding Darcy-Weisbach with Swamee-Jain for HVAC Systems

#ductpressuredrop #hvacengineering #darcyweisbach #accamanuald

4 min read

Evgenii Konkin

Apr 19

The Engineering Math Behind Duct Insulation Loss: Cylindrical Conduction for HVAC Systems

#ductinsulationloss #hvacengineering #heattransfercalculation #energyefficiency

4 min read

Evgenii Konkin

Apr 19

The Engineering Math Behind Duct Friction Loss: Deconstructing the Darcy–Weisbach Equation with Swamee–Jain

#ductfrictionloss #hvacengineering #darcyweisbach #accamanuald

4 min read

Evgenii Konkin

Apr 17

How to Calculate Cool Roof Energy Savings: An HVAC Engineer's Guide

#hvac #engineering #calculator #technicalguide

5 min read

Evgenii Konkin

Apr 17

The Engineering Math Behind District Heating Pipe Loss: Decoding Cylindrical Thermal Resistance for Distribution Efficiency

#districtheating #pipeheatloss #thermalresistance #hvacengineering

4 min read

Evgenii Konkin

Apr 17

How to Calculate Arc Flash Energy: Applying the Lee Method for Electrical Safety Screening

#arcflashenergy #electricalsafety #nfpa70e #ieee1584

9 min read

Evgenii Konkin

Apr 17

The Engineering Math Behind Dew Point Temperature: From Vapor Pressure to Condensation Threshold

#dewpointcalculation #hvacengineering #condensationrisk #psychrometrics

4 min read

Evgenii Konkin

Apr 17

How to Calculate Kitchen Hood Exhaust CFM: A Professional HVAC Guide

#hvac #engineering #calculator #technicalguide

5 min read

Evgenii Konkin

Apr 16

The Engineering Math Behind Deaerator Venting: Calculating Steam Loss and Oxygen Removal Balance

#deaeratorventrate #steamlosscalculation #boilerfeedwater #hvacengineering

4 min read

Evgenii Konkin

Apr 16

How to Calculate Antenna Gain: Applying Directivity and Efficiency for RF System Design

#antennagain #rfengineering #directivity #radiationefficiency

10 min read

Evgenii Konkin

Apr 16

The Engineering Math Behind Daylight Factor Calculations: From Lux Ratios to Building Performance

#daylightfactor #daylightingdesign #hvacengineering #iesstandards

4 min read

Evgenii Konkin

Apr 16

The Engineering Math Behind Data Center Cooling Redundancy: Post-Failure Capacity Analysis

#datacentercooling #cracredundancy #tia942 #ashraetc99

3 min read

Evgenii Konkin

Apr 15

The Engineering Math Behind Dairy Barn Cooling: Decoding ASHRAE's Animal Heat Production Models

#dairybarncooling #animalheatload #ashraestandards #hvacengineering

3 min read

Evgenii Konkin

Apr 15

How to Calculate Aircraft Hangar Heating Load: A Practical Guide for High-Bay Space HVAC Design

#aircrafthangarheating #hvacengineering #ashraestandards #nfpa409

10 min read

Evgenii Konkin

Apr 15

How to Calculate Air Velocity: Practical Methods for HVAC Duct Design and Performance Analysis

#airvelocity #hvacengineering #ductdesign #ashraestandards

9 min read

Evgenii Konkin

Apr 15

The Engineering Math Behind CRAC Unit Sizing: Load Summation and Margin Analysis for Data Center Cooling

#cracsizing #datacentercooling #ashraetc99 #hvacengineering

3 min read

Evgenii Konkin

Apr 15

The Engineering Math Behind Cooling Tower Efficiency: Wet-Bulb Limited Thermal Performance Analysis

#coolingtowerefficiency #hvacengineering #ashrae901 #condenserwatersystems

4 min read

Evgenii Konkin

Apr 14

The Engineering Math Behind Cooling Tower Performance: Decoding Approach vs. Range

#coolingtowerapproach #hvacengineering #ashrae901 #condenserwatersystems

3 min read

Evgenii Konkin

Apr 14

How to Calculate Air Density: Essential Methods for HVAC System Design and Performance Analysis

#airdensity #hvacengineering #ashraestandards #systemperformance

9 min read

Evgenii Konkin

Apr 14

How to Determine AFCI Protection Requirements: A Rule-Based Classification Approach for Electrical Design

#afciprotection #electricalcodecompliance #nec21012 #arcfaultcircuitinterrupter

9 min read

Evgenii Konkin

Apr 14

The Engineering Math Behind HVAC Sizing: Deconstructing the Cooling Load Formula

#coolingloadcalculation #hvacengineering #ashraestandards #systemsizing

3 min read

Evgenii Konkin

Apr 14

The Engineering Math Behind Cool Roof Energy Savings: Breaking Down the Reflectance Difference Formula

#coolroofenergysavings #solarreflectance #hvacengineering #ashrae901

3 min read

Evgenii Konkin

Apr 13

The Engineering Math Behind Commercial Kitchen Energy Recovery: Applying Sensible Heat Transfer Analysis for Feasibility Screening

#commercialkitchenenergyrecover #hvacengineering #ashraestandards #heatexchangereffectiveness

3 min read