1. What is a BTU/hr to Temperature Rise Calculator?

Definition: This calculator determines the temperature increase of a substance based on heat input, mass flow rate, and specific heat capacity.

Purpose: It helps engineers and technicians calculate how much a fluid's temperature will rise when heat is applied at a given flow rate.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \Delta T \) — Temperature rise (°F)
• \( Q \) — Heat input (BTU/hr)
• \( \dot{m} \) — Mass flow rate (lb/hr)
• \( c \) — Specific heat capacity (BTU/lb·°F)

Explanation: The heat input is divided by the product of mass flow rate and specific heat to determine temperature increase.

3. Importance of Temperature Rise Calculation

Details: Accurate temperature rise calculations are critical for HVAC systems, industrial processes, and thermal management applications.

4. Using the Calculator

Tips: Enter the heat input in BTU/hr, mass flow rate in lb/hr, and specific heat capacity (default 1.0 BTU/lb·°F for water). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is specific heat capacity?
A: It's the amount of heat required to raise 1 lb of a substance by 1°F (water = 1.0 BTU/lb·°F).

Q2: How do I find mass flow rate?
A: Multiply volumetric flow rate (gal/min) by 8.33 lb/gal (for water) or use flow meters.

Q3: Does this work for any substance?
A: Yes, as long as you use the correct specific heat capacity for your material.

Q4: What about phase changes?
A: This calculator assumes no phase change (only sensible heat). Latent heat requires different calculations.

Q5: Can I use this for cooling calculations?
A: Yes, just interpret the result as temperature drop when removing heat.