Simple Conduction Cooling Load Calculation

Conduction Cooling Load Formula:

\[ Q = A \times U \times \Delta T \]

Cooling Load (Q):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Simple Conduction Cooling Load?

The Simple Conduction Cooling Load calculation determines the heat transfer through a building envelope or material due to temperature differences. It's a fundamental principle in HVAC design and thermal analysis.

2. How Does the Calculator Work?

The calculator uses the conduction heat transfer equation:

\[ Q = A \times U \times \Delta T \]

Where:

\( Q \) — Cooling load (W)
\( A \) — Surface area (m²)
\( U \) — Heat transfer coefficient (W/m²K)
\( \Delta T \) — Temperature difference across the surface (K)

Explanation: This equation calculates the rate of heat transfer through a material based on its surface area, thermal properties, and the temperature gradient.

3. Importance of Conduction Cooling Load Calculation

Details: Accurate conduction cooling load calculation is essential for proper HVAC system sizing, energy efficiency analysis, building envelope design, and thermal comfort optimization.

4. Using the Calculator

Tips: Enter surface area in square meters, heat transfer coefficient in W/m²K, and temperature difference in Kelvin. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the heat transfer coefficient (U-value)?
A: The U-value represents the overall heat transfer coefficient of a building component, indicating how well it conducts heat. Lower U-values indicate better insulation.

Q2: How is temperature difference (ΔT) determined?
A: ΔT is the difference between indoor and outdoor design temperatures, typically based on climate data and comfort requirements.

Q3: What are typical U-values for building materials?
A: Single glass: ~5.7 W/m²K, Double glazing: ~2.8 W/m²K, Brick wall: ~1.5 W/m²K, Well-insulated wall: ~0.3 W/m²K.

Q4: Does this account for all cooling loads?
A: No, this only calculates conduction loads. Total cooling load includes solar gain, internal loads, ventilation, and infiltration.

Q5: When is this calculation most applicable?
A: Most useful for steady-state conditions, opaque surfaces, and preliminary HVAC load estimations in building design.