1. What is a Water Tank Heat Loss Calculator?

Definition: This calculator estimates the heat loss from a water tank based on the heat transfer coefficient, surface area, and temperature difference.

Purpose: It helps engineers and facility managers determine the thermal energy loss from water storage tanks.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Heat loss (Watts)
• \( U \) — Heat transfer coefficient (W/m² K)
• \( A \) — Surface area (m²)
• \( \Delta T \) — Temperature difference between tank contents and environment (K)

Explanation: The heat loss is directly proportional to all three factors: the insulation quality (U), the exposed surface area, and the temperature difference.

3. Importance of Heat Loss Calculation

Details: Proper heat loss estimation helps in sizing heating systems, evaluating insulation effectiveness, and calculating energy costs.

4. Using the Calculator

Tips: Enter the heat transfer coefficient (U-value), surface area of the tank, and temperature difference. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What are typical U-values for water tanks?
A: Uninsulated steel tanks: 10-15 W/m² K; Insulated tanks: 0.5-2 W/m² K; Well-insulated tanks: 0.1-0.5 W/m² K.

Q2: How do I calculate surface area?
A: For cylindrical tanks: \( 2\pi r h + 2\pi r^2 \) (side + top and bottom).

Q3: What's the difference between K and °C in ΔT?
A: For temperature differences, 1 K = 1°C, so you can use either unit.

Q4: Does this account for ambient conditions?
A: No, this is a basic calculation. Wind, humidity, and other factors may affect actual heat loss.

Q5: How can I reduce heat loss?
A: Increase insulation (lower U-value), reduce surface area (larger tanks have less surface per volume), or reduce temperature difference.