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Evgenii Konkin

Software engineer & founder of CalcEngineer.com. Building tools that make engineering math fast and accessible. HVAC, electrical, structural calculators.

Location Irvine, California Joined Joined on  Personal website https://calcengineer.com

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Software engineer & founder of CalcEngineer.com

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

#elevatormachineroomcooling #hvacengineering #sensibleheatload #ashraestandards
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4 min read
How to Calculate District Heating Pipe Loss: A Professional Guide
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How to Calculate District Heating Pipe Loss: A Professional Guide

#hvac #engineering #calculator #technicalguide
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5 min read
The Engineering Math Behind Dust Collection Sizing: Airflow Summation with Fixed Margin
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The Engineering Math Behind Dust Collection Sizing: Airflow Summation with Fixed Margin

#dustcollectionsystemsizing #industrialventilation #airflowcalculation #hvacengineering
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3 min read
The Engineering Math Behind Duct Velocity: From Airflow to Airspeed in HVAC Systems
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The Engineering Math Behind Duct Velocity: From Airflow to Airspeed in HVAC Systems

#ductvelocity #hvacengineering #ductdesign #ashraestandards
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4 min read
How to Calculate Specific Volume of Air for HVAC System Design
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How to Calculate Specific Volume of Air for HVAC System Design

#hvac #engineering #calculator #technicalguide
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6 min read
The Engineering Math Behind HVAC Duct Sizing: Decoding the Airflow-Velocity Relationship
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The Engineering Math Behind HVAC Duct Sizing: Decoding the Airflow-Velocity Relationship

#ductsizing #hvacengineering #airflowcalculation #ashraestandards
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4 min read
How to Calculate Makeup Air Unit Heating Load: HVAC Engineering Guide
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How to Calculate Makeup Air Unit Heating Load: HVAC Engineering Guide

#hvac #engineering #calculator #technicalguide
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5 min read
The Engineering Math Behind Duct Pressure Drop: Decoding Darcy-Weisbach with Swamee-Jain for HVAC Systems
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The Engineering Math Behind Duct Pressure Drop: Decoding Darcy-Weisbach with Swamee-Jain for HVAC Systems

#ductpressuredrop #hvacengineering #darcyweisbach #accamanuald
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4 min read
The Engineering Math Behind Duct Insulation Loss: Cylindrical Conduction for HVAC Systems
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The Engineering Math Behind Duct Insulation Loss: Cylindrical Conduction for HVAC Systems

#ductinsulationloss #hvacengineering #heattransfercalculation #energyefficiency
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4 min read
The Engineering Math Behind Duct Friction Loss: Deconstructing the Darcy–Weisbach Equation with Swamee–Jain
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The Engineering Math Behind Duct Friction Loss: Deconstructing the Darcy–Weisbach Equation with Swamee–Jain

#ductfrictionloss #hvacengineering #darcyweisbach #accamanuald
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4 min read
How to Calculate Cool Roof Energy Savings: An HVAC Engineer's Guide
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How to Calculate Cool Roof Energy Savings: An HVAC Engineer's Guide

#hvac #engineering #calculator #technicalguide
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5 min read
The Engineering Math Behind District Heating Pipe Loss: Decoding Cylindrical Thermal Resistance for Distribution Efficiency
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The Engineering Math Behind District Heating Pipe Loss: Decoding Cylindrical Thermal Resistance for Distribution Efficiency

#districtheating #pipeheatloss #thermalresistance #hvacengineering
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4 min read
How to Calculate Arc Flash Energy: Applying the Lee Method for Electrical Safety Screening
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How to Calculate Arc Flash Energy: Applying the Lee Method for Electrical Safety Screening

#arcflashenergy #electricalsafety #nfpa70e #ieee1584
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9 min read
The Engineering Math Behind Dew Point Temperature: From Vapor Pressure to Condensation Threshold
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The Engineering Math Behind Dew Point Temperature: From Vapor Pressure to Condensation Threshold

#dewpointcalculation #hvacengineering #condensationrisk #psychrometrics
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4 min read
How to Calculate Kitchen Hood Exhaust CFM: A Professional HVAC Guide
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How to Calculate Kitchen Hood Exhaust CFM: A Professional HVAC Guide

#hvac #engineering #calculator #technicalguide
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5 min read
The Engineering Math Behind Deaerator Venting: Calculating Steam Loss and Oxygen Removal Balance
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The Engineering Math Behind Deaerator Venting: Calculating Steam Loss and Oxygen Removal Balance

#deaeratorventrate #steamlosscalculation #boilerfeedwater #hvacengineering
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4 min read
How to Calculate Antenna Gain: Applying Directivity and Efficiency for RF System Design
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How to Calculate Antenna Gain: Applying Directivity and Efficiency for RF System Design

#antennagain #rfengineering #directivity #radiationefficiency
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10 min read
The Engineering Math Behind Daylight Factor Calculations: From Lux Ratios to Building Performance
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The Engineering Math Behind Daylight Factor Calculations: From Lux Ratios to Building Performance

#daylightfactor #daylightingdesign #hvacengineering #iesstandards
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4 min read
The Engineering Math Behind Data Center Cooling Redundancy: Post-Failure Capacity Analysis
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The Engineering Math Behind Data Center Cooling Redundancy: Post-Failure Capacity Analysis

#datacentercooling #cracredundancy #tia942 #ashraetc99
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3 min read
The Engineering Math Behind Dairy Barn Cooling: Decoding ASHRAE's Animal Heat Production Models
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The Engineering Math Behind Dairy Barn Cooling: Decoding ASHRAE's Animal Heat Production Models

#dairybarncooling #animalheatload #ashraestandards #hvacengineering
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3 min read
How to Calculate Aircraft Hangar Heating Load: A Practical Guide for High-Bay Space HVAC Design
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How to Calculate Aircraft Hangar Heating Load: A Practical Guide for High-Bay Space HVAC Design

#aircrafthangarheating #hvacengineering #ashraestandards #nfpa409
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10 min read
How to Calculate Air Velocity: Practical Methods for HVAC Duct Design and Performance Analysis
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How to Calculate Air Velocity: Practical Methods for HVAC Duct Design and Performance Analysis

#airvelocity #hvacengineering #ductdesign #ashraestandards
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9 min read
The Engineering Math Behind CRAC Unit Sizing: Load Summation and Margin Analysis for Data Center Cooling
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The Engineering Math Behind CRAC Unit Sizing: Load Summation and Margin Analysis for Data Center Cooling

#cracsizing #datacentercooling #ashraetc99 #hvacengineering
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3 min read
The Engineering Math Behind Cooling Tower Efficiency: Wet-Bulb Limited Thermal Performance Analysis
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The Engineering Math Behind Cooling Tower Efficiency: Wet-Bulb Limited Thermal Performance Analysis

#coolingtowerefficiency #hvacengineering #ashrae901 #condenserwatersystems
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4 min read
The Engineering Math Behind Cooling Tower Performance: Decoding Approach vs. Range
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The Engineering Math Behind Cooling Tower Performance: Decoding Approach vs. Range

#coolingtowerapproach #hvacengineering #ashrae901 #condenserwatersystems
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3 min read
How to Calculate Air Density: Essential Methods for HVAC System Design and Performance Analysis
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How to Calculate Air Density: Essential Methods for HVAC System Design and Performance Analysis

#airdensity #hvacengineering #ashraestandards #systemperformance
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9 min read
How to Determine AFCI Protection Requirements: A Rule-Based Classification Approach for Electrical Design
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How to Determine AFCI Protection Requirements: A Rule-Based Classification Approach for Electrical Design

#afciprotection #electricalcodecompliance #nec21012 #arcfaultcircuitinterrupter
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9 min read
The Engineering Math Behind HVAC Sizing: Deconstructing the Cooling Load Formula
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The Engineering Math Behind HVAC Sizing: Deconstructing the Cooling Load Formula

#coolingloadcalculation #hvacengineering #ashraestandards #systemsizing
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3 min read
The Engineering Math Behind Cool Roof Energy Savings: Breaking Down the Reflectance Difference Formula
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The Engineering Math Behind Cool Roof Energy Savings: Breaking Down the Reflectance Difference Formula

#coolroofenergysavings #solarreflectance #hvacengineering #ashrae901
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3 min read
The Engineering Math Behind Commercial Kitchen Energy Recovery: Applying Sensible Heat Transfer Analysis for Feasibility Screening
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The Engineering Math Behind Commercial Kitchen Energy Recovery: Applying Sensible Heat Transfer Analysis for Feasibility Screening

#commercialkitchenenergyrecover #hvacengineering #ashraestandards #heatexchangereffectiveness
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3 min read
How to Calculate Air Changes per Hour: A Practical Guide for HVAC Ventilation Design and Code Compliance
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How to Calculate Air Changes per Hour: A Practical Guide for HVAC Ventilation Design and Code Compliance

#airchangesperhour #achcalculation #hvacventilation #ashraestandards
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9 min read
How to Calculate Server Rack Heat Load: A Practical Guide for Data Center HVAC Design
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How to Calculate Server Rack Heat Load: A Practical Guide for Data Center HVAC Design

#serverrackheatload #datacentercooling #ashraethermalguidelines #hvacengineering
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9 min read
How to Calculate Delta T in HVAC Systems: Diagnosing Performance and Validating Design
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How to Calculate Delta T in HVAC Systems: Diagnosing Performance and Validating Design

#deltat #hvacdiagnostics #heattransfer #systemperformance
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9 min read
The Engineering Math Behind Thermal Comfort: Decoding ASHRAE 55's Adaptive Model
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The Engineering Math Behind Thermal Comfort: Decoding ASHRAE 55's Adaptive Model

#ashrae55 #adaptivecomfort #thermalcomfort #naturalventilation
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3 min read
The Engineering Math Behind Cooling Load Calculations: From Physics to Python
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The Engineering Math Behind Cooling Load Calculations: From Physics to Python

#coolingload #hvacdesign #ashrae #systemsizing
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3 min read
The Engineering Math Behind Cool Roof Energy Savings: A Steady-State Screening Method for HVAC Engineers
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The Engineering Math Behind Cool Roof Energy Savings: A Steady-State Screening Method for HVAC Engineers

#coolroof #energysavings #hvacdesign #solarreflectance
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4 min read
The Engineering Math Behind HVAC Coil Sizing: Decoding the Capacity Formulas
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The Engineering Math Behind HVAC Coil Sizing: Decoding the Capacity Formulas

#coilcapacity #hvacengineering #psychrometrics #coolingcoilsizing
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3 min read
How to Calculate Coil Capacity: Essential HVAC Design and Verification
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How to Calculate Coil Capacity: Essential HVAC Design and Verification

#hvac #engineering #calculator #technicalguide
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5 min read
How to Calculate Refrigerant Charge: A Professional HVAC Engineering Guide
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How to Calculate Refrigerant Charge: A Professional HVAC Engineering Guide

#hvac #engineering #calculator #technicalguide
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6 min read
How to Calculate Supply Air Temperature: Essential HVAC Design Guide
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How to Calculate Supply Air Temperature: Essential HVAC Design Guide

#hvac #engineering #calculator #technicalguide
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5 min read
How to Calculate HVAC Efficiency: A Professional Guide for System Analysis
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How to Calculate HVAC Efficiency: A Professional Guide for System Analysis

#hvac #engineering #calculator #technicalguide
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5 min read
How to Calculate Duct Velocity: Essential HVAC Design Parameter
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How to Calculate Duct Velocity: Essential HVAC Design Parameter

#hvac #engineering #calculator #technicalguide
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5 min read
How to Calculate Air Velocity: Essential HVAC Duct Design Guide
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How to Calculate Air Velocity: Essential HVAC Duct Design Guide

#hvac #engineering #calculator #technicalguide
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5 min read
Server Rack Heat Load: The Practical Starting Point for Data Center HVAC
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Server Rack Heat Load: The Practical Starting Point for Data Center HVAC

#hvac #engineering #datacenter #tutorial
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6 min read
How to Calculate Latent Heat Load: HVAC Dehumidification Design
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How to Calculate Latent Heat Load: HVAC Dehumidification Design

#hvac #engineering #calculator #technicalguide
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5 min read
How to Calculate Enthalpy: Complete HVAC Guide
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How to Calculate Enthalpy: Complete HVAC Guide

#engineering #hvac #calculator #enthalpy
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4 min read
How to Calculate Heat Exchanger Duty: LMTD Method for HVAC Engineers
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How to Calculate Heat Exchanger Duty: LMTD Method for HVAC Engineers

#engineering #hvac #calculator #heatexchanger
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4 min read
How to Calculate Air Changes Per Hour: Complete HVAC Engineering Guide
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How to Calculate Air Changes Per Hour: Complete HVAC Engineering Guide

#engineering #hvac #ventilation #airquality
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4 min read
How to Calculate Voltage Drop: A Complete Engineering Guide
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How to Calculate Voltage Drop: A Complete Engineering Guide

#electrical #voltagedrop #calculator #engineering
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4 min read
How to Calculate Arc Flash Energy: A Complete NEC Guide
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How to Calculate Arc Flash Energy: A Complete NEC Guide

#electricalengineerin #arcflash #nfpa70e #incidentenergy
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4 min read
How to Calculate Heat Pump Size: A Complete Engineering Guide
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How to Calculate Heat Pump Size: A Complete Engineering Guide

#engineering #hvac #calculator #heatpump
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4 min read
How to Calculate Cooling Load: HVAC System Design Guide
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How to Calculate Cooling Load: HVAC System Design Guide

#engineering #hvac #coolingload #calculator
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4 min read
How to Calculate Voltage Drop per NEC: Formula, Wire Size Table, and Online Calculator
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How to Calculate Voltage Drop per NEC: Formula, Wire Size Table, and Online Calculator

#electrical #engineering #calculator #nec
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3 min read
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