1. What is the BTU to TR Conversion?

The conversion from British thermal units per hour (BTU/h) to tons of refrigeration (TR) is a standard calculation in HVAC and refrigeration engineering. One ton of refrigeration is equal to 12,000 BTU per hour.

2. How Does the Calculator Work?

The calculator uses the simple conversion formula:

Where:

• \( TR \) — Tons of refrigeration
• \( BTU/h \) — British thermal units per hour

Explanation: This formula converts cooling capacity from BTU/h to the equivalent in tons of refrigeration, which is a standard unit in the HVAC industry.

3. Importance of TR Calculation

Details: Accurate conversion between BTU/h and tons of refrigeration is essential for sizing HVAC equipment, comparing cooling capacities, and ensuring proper system design in refrigeration and air conditioning applications.

4. Using the Calculator

Tips: Enter the BTU/h value in the input field. The value must be a positive number. The calculator will automatically compute the equivalent tons of refrigeration.

5. Frequently Asked Questions (FAQ)

Q1: Why is 12,000 BTU/h equal to 1 ton of refrigeration?
A: This conversion originates from the amount of heat required to melt one ton of ice in 24 hours, which is approximately 12,000 BTU per hour.

Q2: What is a typical TR rating for residential air conditioners?
A: Residential AC units typically range from 1.5 to 5 tons (18,000 to 60,000 BTU/h), depending on the size of the space being cooled.

Q3: Can this calculator be used for commercial HVAC systems?
A: Yes, the conversion formula is the same regardless of system size, from small residential units to large commercial installations.

Q4: How precise is this conversion?
A: The conversion is exact by definition - 1 TR always equals exactly 12,000 BTU/h in HVAC calculations.

Q5: Are there different definitions of tons of refrigeration?
A: While historically there were slight variations, the modern standard in HVAC is universally 12,000 BTU/h = 1 TR.