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Steady Conduction Heat Transfer Calculator — result sheet
Estimate steady heat-transfer rate and energy through a flat layer from conductivity, area, temperature difference, thickness, and time.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Temperature difference=hot temperature−cold temperature; heat-transfer rate=thermal conductivity×area×temperature difference/thickness; energy=rate×time.
This page applies the one-dimensional steady conduction relation for a uniform flat layer. It makes the temperature difference, area, thickness, and conductivity visible so a visitor can audit which assumption changes the result. The time output integrates the constant rate over the selected interval.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Thermal conductivity — W/(m·K); minimum 1.0E-6; maximum 1000000
- Transfer area — m²; minimum 1.0E-6; maximum 1000000000
- Hot-side temperature — °C; minimum -273.15; maximum 1000000
- Cold-side temperature — °C; minimum -273.15; maximum 1000000
- Layer thickness — m; minimum 1.0E-6; maximum 1000000
- Time interval — s; minimum 0; maximum 1000000000000
Worked example
| Input | Value |
|---|---|
| Thermal conductivity | 1.4 |
| Transfer area | 10 |
| Hot-side temperature | 80 |
| Cold-side temperature | 20 |
| Layer thickness | 0.1 |
| Time interval | 3600 |
Temperature difference = 60 K; heat-transfer rate = 8,400 W; energy = 30,240,000 J = 8.4 kWh.
Assumptions and limits
- The hot-side temperature is greater than the cold-side temperature and both sides remain fixed during the interval.
- The layer is uniform, flat, and represented by one-dimensional steady conduction with a constant thermal conductivity.
- Area, thickness, and time use the SI units shown; contact resistance, convection, radiation, moisture, edges, and thermal storage are not modeled.
- The result is a physics estimate and does not select insulation, certify a wall assembly, or predict a surface temperature.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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