ASHRAE 183/RTS Zone Cooling Load (Sensible + Latent) calculator

Quick Answer

Calculate ASHRAE 183/RTS Zone Cooling Load (Sensible + Latent)

Calculator

ToolFusion Engineering Network

Need Equipment or a Supplier for This Project?

Use your calculation result to continue with equipment selection, supplier discovery, engineering support, or project evaluation.

Find Engineering Solutions →

Result Interpretation

ASHRAE 183/RTS Zone Cooling Load (Sensible + Latent) calculator computes Total zone cooling load in W using the defined engineering formula and the input values provided. Total zone cooling load is expressed in W. No universal acceptance threshold is defined by this calculator.

Worked Example

Verified calculation

Given:

Conduction heat gain = 1250
Solar radiation heat gain = 2100
Internal sensible heat gain = 850
Internal latent heat gain = 320
Infiltration sensible heat gain = 410
Ventilation sensible + latent heat gain = 680

Expected Result:

Total zone cooling load = 5610

Engineering Interpretation:

Under the given input conditions, the calculated result is: Total zone cooling load = 5610 W.

The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.

Formula / Method

total zone cooling load = conduction heat gain + solar radiation heat gain + internal sensible heat gain + internal latent heat gain + infiltration sensible heat gain + ventilation sensible + latent heat gain

Formula family: formula_hvac_hvac_cooling_load_calculation_per_zone_ashrae_183rts_method

Variables

Symbol	Label	Role	Description
Q_cond	Conduction heat gain	INPUT	Conduction heat gain
Q_solar	Solar radiation heat gain	INPUT	Solar radiation heat gain
Q_int_sen	Internal sensible heat gain	INPUT	Internal sensible heat gain
Q_int_lat	Internal latent heat gain	INPUT	Internal latent heat gain
Q_infil	Infiltration sensible heat gain	INPUT	Infiltration sensible heat gain
Q_vent	Ventilation sensible + latent heat gain	INPUT	Ventilation sensible + latent heat gain
cooling_load	Total zone cooling load	OUTPUT	Total zone cooling load

Calculation Steps

Enter the conduction heat gain in W.
Enter the solar radiation heat gain in W.
Enter the internal sensible heat gain in W.
Enter the internal latent heat gain in W.
Enter the infiltration sensible heat gain in W.
Enter the ventilation sensible + latent heat gain in W.
Step 1: Compute total zone cooling load.
Read the total zone cooling load (W) from the results.

Engineering Summary

Calculate ASHRAE 183/RTS Zone Cooling Load (Sensible + Latent)

Frequently Asked Questions

What does this calculator calculate?

The ASHRAE 183/RTS Zone Cooling Load (Sensible + Latent) calculator estimates Total zone cooling load based on the input parameters you provide

Why is conduction heat gain important in this calculation?

conduction heat gain is directly proportional to total zone cooling load. When you enter conduction heat gain in W, the calculator uses it in the engineering formula to compute the output

How should I interpret the result total zone cooling load?

The calculator outputs total zone cooling load in W. For larger power values, divide by 1000 to express the result in kW, or by 745.7 for horsepower. The result is computed directly from the input values using the defined engineering formula

What units should I use for the inputs?

Enter each value in the units shown next to the input field: Conduction heat gain (W), Solar radiation heat gain (W), Internal sensible heat gain (W), Internal latent heat gain (W), Infiltration sensible heat gain (W), Ventilation sensible + latent heat gain (W). Make sure all inputs use the specified units for consistent results

What assumptions does this calculator use?

This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment