1. What is a Water to Water Heat Exchanger Calculator?

Definition: This calculator determines the heat transfer rate between two water streams in a heat exchanger.

Purpose: It helps engineers and technicians calculate the thermal energy being transferred in water-to-water heat exchange systems.

2. How Does the Calculator Work?

The calculator uses the fundamental heat transfer equation:

Where:

• \( Q \) — Heat transfer rate (Watts)
• \( \dot{m} \) — Mass flow rate (kg/s)
• \( c \) — Specific heat capacity of water (J/kg·K)
• \( \Delta T \) — Temperature difference (Kelvin)

Explanation: The heat transfer is calculated by multiplying the mass flow rate by the specific heat capacity and the temperature difference between the hot and cold streams.

3. Importance of Heat Transfer Calculation

Details: Accurate heat transfer calculations are essential for designing efficient heat exchangers, sizing equipment properly, and ensuring optimal system performance.

4. Using the Calculator

Tips: Enter the mass flow rate in kg/s, specific heat capacity (default 4186 J/kg·K for water), and temperature difference in Kelvin. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the typical specific heat capacity of water?
A: The specific heat capacity of water is approximately 4186 J/kg·K at 20°C, but it varies slightly with temperature.

Q2: How do I convert flow rate from L/min to kg/s?
A: Multiply L/min by 0.01667 to convert to kg/s (assuming water density of 1 kg/L).

Q3: Can I use this for other fluids besides water?
A: Yes, but you must use the correct specific heat capacity for the fluid in question.

Q4: What if my temperature difference is in °C?
A: Temperature differences in °C and K are equivalent (Δ1°C = Δ1K).

Q5: Does this account for heat exchanger efficiency?
A: No, this calculates the theoretical maximum heat transfer. Actual values will be lower due to efficiency losses.