Total Cooling Load due to Equipment Calculator

Total Cooling Load Formula:

\[ Q_T = Q_{ph} \times LF \]

Total Cooling Load (W):

1. What is Total Cooling Load due to Equipment?

Definition: This calculator estimates the total cooling load required for equipment by considering both sensible and latent heat factors.

Purpose: It helps HVAC professionals and engineers determine the cooling capacity needed to maintain optimal equipment operating temperatures.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Q_T = Q_{ph} \times LF \]

Where:

\( Q_T \) — Total cooling load (Watts)
\( Q_{ph} \) — Sensible cooling load (Watts)
\( LF \) — Latent factor (dimensionless, typically 1.25)

Explanation: The sensible cooling load is multiplied by a latent factor to account for moisture removal and other latent heat components.

3. Importance of Cooling Load Calculation

Details: Proper cooling load estimation ensures equipment operates within safe temperature ranges, prevents overheating, and optimizes energy usage.

4. Using the Calculator

Tips: Enter the sensible cooling load in Watts and latent factor (default 1.25 ±5%). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is sensible cooling load?
A: Sensible cooling load is the heat that causes a temperature change without phase change, measurable by a thermometer.

Q2: Why is the latent factor typically 1.25?
A: The 1.25 factor accounts for the typical ratio of latent to sensible heat in many HVAC applications (about 20% latent).

Q3: When would I change the latent factor?
A: Adjust for environments with different humidity levels (higher for humid areas, lower for dry areas).

Q4: How do I find the sensible cooling load?
A: Measure equipment heat output or calculate from power consumption (1W = 3.412 BTU/hr).

Q5: Does this include safety margins?
A: No, consider adding 10-20% to the calculated load for design safety factors.