Quick Answer
Calculate Triple Glazing Linear Thermal Bridge Heat Flow Rate
Calculator
Result Interpretation
Triple Glazing Linear Thermal Bridge Heat Flow Rate calculator computes Thermal bridge heat transfer rate per unit length in W/m using the defined engineering formula and the input values provided.
Worked Example
Verified calculation
Given:
- Frame thermal resistance = 0.28
- Joint interface thermal resistance = 0.018
- Indoor air temperature = 293.15
- Outdoor air temperature = 263.15
- Edge-of-glass thermal resistance = 0.042
Expected Result:
- Thermal bridge heat transfer rate per unit length = 88.235294117647
Engineering Interpretation:
Under the given input conditions, the calculated result is: Thermal bridge heat transfer rate per unit length = 88.235294117647 W/m.
The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.
Formula / Method
thermal bridge heat transfer rate per unit length = (indoor air temperature - outdoor air temperature) / (edge-of-glass thermal resistance + frame thermal resistance + joint interface thermal resistance)Formula family: formula_buildingphysics_triple_glazing_thermal_bridge_heat_flow_calculator
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| T_inside | Indoor air temperature | INPUT | Indoor air temperature |
| T_outside | Outdoor air temperature | INPUT | Outdoor air temperature |
| R_glass_edge | Edge-of-glass thermal resistance | INPUT | Edge-of-glass thermal resistance |
| R_frame | Frame thermal resistance | INPUT | Frame thermal resistance |
| R_joint | Joint interface thermal resistance | INPUT | Joint interface thermal resistance |
| Thermal bridge heat transfer rate per unit length | Thermal bridge heat transfer rate per unit length | OUTPUT | Thermal bridge heat transfer rate per unit length |
Calculation Steps
- Enter the indoor air temperature in K.
- Enter the outdoor air temperature in K.
- Enter the edge-of-glass thermal resistance in m·K/W.
- Enter the frame thermal resistance in m·K/W.
- Enter the joint interface thermal resistance in m·K/W.
- Step 1: Compute thermal bridge heat transfer rate per unit length.
- Read the thermal bridge heat transfer rate per unit length (W/m) from the results.
Engineering Summary
Calculate Triple Glazing Linear Thermal Bridge Heat Flow Rate
Frequently Asked Questions
What does this calculator calculate?
The Triple Glazing Linear Thermal Bridge Heat Flow Rate calculator estimates Thermal bridge heat transfer rate per unit length based on the input parameters you provide
Why is indoor air temperature important in this calculation?
indoor air temperature is directly proportional to thermal bridge heat transfer rate per unit length. When you enter indoor air temperature in K, the calculator uses it in the engineering formula to compute the output
How should I interpret the result thermal bridge heat transfer rate per unit length?
The calculator outputs thermal bridge heat transfer rate per unit length in W/m. The result is computed directly from the input values using the defined engineering formula
What units should I use for the inputs?
Enter each value in the units shown next to the input field: Indoor air temperature (K), Outdoor air temperature (K), Edge-of-glass thermal resistance (m·K/W), Frame thermal resistance (m·K/W), Joint interface thermal resistance (m·K/W). Make sure all inputs use the specified units for consistent results
What assumptions does this calculator use?
This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment
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