HVAC FORMULAS ... Approximate Energy Content of Fuels cu ft natural gas= 1,000 BTU/hr cord of wood= 30,000,000 BTU/hr ... Compiled by J.R. Kok for Lewis-Clark State College and ICTE …

Dec 4, 2025 · A quick HVAC field reference with formulas for CFM, BTU, Cv, GPM, ΔT, superheat, and subcooling. Use these calculations to verify system capacity, airflow, valve …

KN = 1.0 for most HVAC Applications = Capacity Correction Factor Due to the Degree of Superheat KSH = 1.0 for Saturated Steam = Compressibility Factor Z = 1.0 If Value is …

Arithmetic Mean Temperature Difference in Heat Exchangers - AMTD - and Logarithmic Mean Temperature Difference - LMTD - formulas with examples - Online Mean Temperature Calculator.

Download Our Free HVAC Formulas Computrols believes that our customers should have the ability to operate their own HVAC system and building automation controls.

Comprehensive guide to essential HVAC design equations covering air, fan, pump, and hydronic system calculations. Reference standards from SMACNA, ASHRAE, and Carrier for …

The basic purpose of an HVAC system is to provide interior thermal conditions that a majority of occupants will find acceptable. This simply requires that the air be moved at an adequate …

HVAC Equations BTU/HR = 1.08 * CFM * ΔT BTU/HR = 4.5 * CFM * ΔH BTU/HR = 0.69 * CFM * Δgr GPM = BTU/HR (Airside) / (water ΔT x 500) ACH = (CFM * 60) / Volume COP = BTU …

Oct 24, 2022 · In this section, we will cover three important HVAC and other useful formulas that help HVAC technicians determine airflow, temperature, and humidity levels in buildings.

COMMON HVAC FORMULAS AIR SYSTEM Sensible = 1.08 x CFM x ∆T Latent = 4840 x CFM x ∆H