BTU Calculator
Convert electrical power to heat flow in BTU/hr.
Input
About BTU/hr (British Thermal Units per Hour)
BTU/hr (British Thermal Units per Hour) is a standard unit used to measure the rate of heat transfer, commonly in heating, ventilation, and air conditioning (HVAC) systems. It quantifies how much energy is added or removed per hour. Understanding BTU/hr is essential for sizing heaters, air conditioners, and other thermal systems. For reference, 1 watt (W) is approximately equal to 3.412 BTU/hr under steady-state conditions.
•Features
- –Calculates heat transfer rates in BTU/hr for heating and cooling systems.
- –Converts between watts (W) and BTU/hr for international and engineering applications.
- –Supports estimation of HVAC capacity and energy requirements.
- –Helps in designing energy-efficient heating and cooling solutions.
- –Provides clear guidance for residential, commercial, and industrial applications.
•How to Use
- 1.Enter the heat transfer rate in watts (W) or BTU/hr, depending on your input.
- 2.Click “Convert” to switch between BTU/hr and watts for easy comparison.
- 3.Use the calculated BTU/hr to determine the appropriate size of heaters, air conditioners, or other thermal devices.
- 4.Compare different devices or systems to select the most energy-efficient option.
- 5.Use steady-state assumptions for accurate BTU/hr conversions; adjust for transient conditions if needed.
•Key Concepts
- –BTU (British Thermal Unit): Amount of heat required to raise 1 lb of water by 1°F.
- –BTU/hr: Heat transfer per hour; used to rate HVAC system capacity.
- –Watts to BTU/hr: 1 W ≈ 3.412 BTU/hr
- –Steady-State Assumption: Conversion assumes a constant heat transfer rate over time.
- –Applications: Heating, cooling, energy efficiency, and system sizing.
•Formulas Used
- –Watts to BTU/hr: BTU/hr = W × 3.412
- –BTU/hr to Watts: W = BTU/hr ÷ 3.412
- –Energy Conversion: E (kWh) = Power (kW) × Time (h)