Artificial intelligence (AI) policy: Adicot.com prohibits the entry of content from any Adicot.com intellectual property into any AI tool, including but not limited to ChatGPT. Additionally, creating derivative works of Adicot.com using AI is also prohibited without express written permission from Adicot.com.
Coil Selection Calculator
Instructions:
Review the methodology to ensure it aligns with your project's requirements.
BTUH Capacity & Leaving Air Temperature
-
Select US or Metric Units
-
Sensible Cooling:
-
Select the parameter for which to solve: Sensible Cooling, Volume Flow Rate, Leaving air Temperature, or Entering Air Temperature.
-
Enter all of the required inputs.
-
Click the Calculate button, and the Result will show below the table.
-
-
Total Cooling:
-
Select the parameter for which to solve: Total Cooling, Volume Flow Rate, Leave air Enthalpy, or Entering Air Enthalpy (note there is a Calculate Enthalpy button to take you to our Psychrometric Calculator to solve for Enthalpy).
-
Enter all of the required inputs.
-
Click the Calculate button, and the Result will show below the table.
-
-
Latent Cooling
-
Select the parameter for which to solve: Latent Cooling, Volume Flow Rate, Leave air Humidity Ratio, or Entering Air Humidity Ratio (note there is a Calculate Humidity Ratio button which will take you to our Psychrometric Calculator to solve for Humidity Ratio).
-
Enter all of the required inputs.
-
Click the Calculate button, and the Result will show below the table.
-
Area & Velocity
-
Select US or Metric Units
-
Enter the fin length and height
-
Enter the flow rate
-
Click the calculate button, and the Results will show below the table.
Water and Glycol Flow
-
Select US or Metric Units
-
Select the parameter for which to solve: Fluid Capacity, Volume Flow Rate, Entering Temperature, or Leaving Temperature.
-
Enter all of the required inputs.
-
Click the calculate button, and the Result will show below the table.
Water Velocity
-
Select US or Metric Units
-
Enter flow rate, tube diameter, and number of tubes.
-
Click the calculate button, and the Result will show below the table.
Methodology and Equations :
BTUH Capacity & Leaving Air Temperature
The following equations are used in this calculator:
Sensible Cooling [BTU/h] = CFM x 1.0746 x (T1 – T2)
Latent Cooling [Btu/h] = CFM x 0.69143 x (G1 – G2)
Total Cooling [Btu/h] = CFM x 4.5 (H1 – H2)
where
CFM = volume flow rate [cfm]
G1= Entering humidity ratio [grains,moisture/lb,dry air]
G2 = Leaving humidity ratio [grains,moisture/lb,dry air]
H1 = Entering enthalpy [BTU/lb, dry air]
H2 = Leaving enthalpy [BTU/lb, dry air]
T1 = Entering air temperature [oF]
T2 = Leaving air temperature [oF]
Area & Velocity
The following equations are used in this calculator:
Coil area [ft] = Fin height x Fin length / 144 in^2/ft^2
Air Velocity = CFM / FPM
where
CFM = volume flow rate of air [cfm]
FPM = velocity of air [fpm]
Water and Glycol Flow
The following equation is used in this calculator:
Fluid capacity [BTU/h] = rho x cp x (T1 - T2) x [GPM] x 60 min/hr
where
rho = fluid density [lb/gallon]
cp = specific heat of fluid [Btu/lb-oF]
T1 = Entering fluid temperature [oF]
T2 = Leaving fluid temperature [oF]
GPM = Volume flow rate [GPM]
Water Velocity
The following equations are used in this calculator:
V = Q x C / ID^2 / No. of Tubes
where
C = English Unit Conversion Constant = 0.408498
ID = Tubing Inner Diameter [in]
Q = flow rate [GPM]
V = velocity [f/s]