Buildingphysics Engineering

ISO 13788 Glazing Inner Surface Temperature (Steady-State) calculator

ISO 13788 Glazing Inner Surface Temperature (Steady-State) engineering calculator.

Runnable This tool can run, but independent engineering verification has not been established.

Quick Answer

The iso 13788 glazing inner surface temperature (steady-state) calculator computes glazing inner surface temperature from the input values you provide.

Calculator

Glazing inner surface temperature (K)
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Result Interpretation

ISO 13788 Glazing Inner Surface Temperature (Steady-State) calculator computes Glazing inner surface temperature in K using the defined engineering formula and the input values provided. Glazing inner surface temperature is expressed in K. No universal acceptance threshold is defined by this calculator.

Worked Example

Verified calculation

Given:

  • Indoor air temperature = 293.15
  • Outdoor air temperature = 263.15
  • Internal surface resistance = 0.13
  • Glazing thermal resistance = 0.45
  • External surface resistance = 0.04

Expected Result:

  • Glazing inner surface temperature = 286.85967741935

Engineering Interpretation:

Under the given input conditions, the calculated result is: Glazing inner surface temperature = 286.85967741935 K.

The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from deterministically validated test cases.

Formula / Method

glazing inner surface temperature = indoor air temperature - (indoor air temperature - outdoor air temperature) * (internal surface resistance / (internal surface resistance + glazing thermal resistance + external surface resistance))

Glazing inner surface temperature.

Variables

SymbolLabelRoleDescription
T_i Indoor air temperature INPUT Indoor air temperature
T_e Outdoor air temperature INPUT Outdoor air temperature
R_si Internal surface resistance INPUT Internal surface resistance
R_g Glazing thermal resistance INPUT Glazing thermal resistance
R_se External surface resistance INPUT External surface resistance
surface_temperature Glazing inner surface temperature OUTPUT Glazing inner surface temperature

Calculation Steps

  1. Enter the indoor air temperature in K.
  2. Enter the outdoor air temperature in K.
  3. Enter the internal surface resistance in m²·K/W.
  4. Enter the glazing thermal resistance in m²·K/W.
  5. Enter the external surface resistance in m²·K/W.
  6. Step 1: Compute glazing inner surface temperature.
  7. Read the glazing inner surface temperature (K) from the results.

Frequently Asked Questions

What does this calculator calculate?

The ISO 13788 Glazing Inner Surface Temperature (Steady-State) calculator estimates Glazing inner surface temperature based on the input parameters you provide

Why is indoor air temperature important in this calculation?

indoor air temperature is used directly in the calculation of glazing inner surface temperature. Its effect on the result depends on the complete formula and the values of the other inputs.. 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 glazing inner surface temperature?

The calculator outputs glazing inner surface temperature in K. 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), Internal surface resistance (m²·K/W), Glazing thermal resistance (m²·K/W), External surface resistance (m²·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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