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CFM = Air Flow Rate (Cu.Ft./Minute) SpV = Specific Volume of Air (Cu.Ft./Lb.DA) WGR. = Specific Humidity (Gr.H2O/Lb.DA) WLB. = Specific Humidity (Lb.H2O/Lb.DA) 5.12 Humidifier Sensible Heat Gain H S = (0.244 × Q ×∆T) + (L × 380) HS = Sensible Heat Gain (Btu/Hr.) Q = Steam Flow (Lb.Steam/Hr.) ∆T = Steam Temperature − Supply Air ...
The Sensible Heat Formula: Q = C x M x ∆𝑇 Q= quantity of sensible heat in BTU/hr M= mass C= specific heat of material ∆𝑇= temp difference Applied to Standard Air Applied to Water (not glycol)
It is important to use the correct procedure for estimating heat gain or heat loss. Two groups—the Air Conditioning Contractors of America (ACCA) and the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE)—publish calculation procedures for sizing central air conditioners.
Specific Heat Ratio of air at temperatures ranging -40 - 1000 degC (-40 - 1500 degF) at standard atmospheric pressure - Imperial and SI Units.
HVACR FORMULAS. TON OF REFRIGERATION - The amount of heat required to melt a ton (2000 lbs.) of ice at 32°F 288,000 BTU/24 hr. 12,000 BTU/hr. APPROXIMATELY 2 inches Hg. (mercury) = 1 psi.
Principles of Heating, Ventilating, and Air Conditioning is a textbook based on the 2017 ASHRAE Handbook—Fundamentals . It contains the most current ASHRAE procedures and definitive, yet
Cooling & heating load calculations are normally made to size HVAC (heating, ventilating, and air-conditioning) systems and their components. In principle, the loads are calculated to maintain the indoor design conditions.
