This calculator is used to estimate heat losses of process heating equipment due to fixtures, trays, conveyor belts, and similar equipment that enter the furnace at lower temperatures and are heated to the furnace temperature. These fixtures absorb heat from the furnace as they are heated from their initial temperature to the final furnace temperature. The calculator computes the total heat loss based on the feed rate, specific heat of the fixture material, initial and final temperatures, and a correction factor [3]. The calculation assumes there is no melting or phase change of the fixture material involved. Relevant formulas are documented below.
Heat Loss
\begin{equation}\label{eq:fixture-heat-loss} Q = \dot{m} \cdot c_p \cdot (T_\text{final} - T_\text{initial}) \cdot f_\text{corr}\end{equation}
- Symbols
| \(Q\) | Heat loss \([\unit{ \btu\per\hour}]\) |
| \(\dot{m}\) | Feed rate of fixture material \([\unit{ \pound\per\hour}]\) |
| \(c_p\) | Specific heat of fixture material \([\unit{ \btu\per\pound\degreeFahrenheit}]\) |
| \(T_\text{final}\) | Final temperature of fixture \([\unit{ \degreeFahrenheit}]\) |
| \(T_\text{initial}\) | Initial temperature of fixture \([\unit{ \degreeFahrenheit}]\) |
| \(f_\text{corr}\) | Correction factor \([\unit{ \unitless}]\) |
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| namespace | fixture_heat_loss |
| | Calculates heat losses from fixtures, trays, and conveyors in process heating equipment.
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| double | fixture_heat_loss::totalHeatLoss (double specific_heat, double feed_rate, double initial_temperature, double final_temperature, double correction_factor) |
| | Calculates the total heat loss from fixtures, trays, or conveyors.
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◆ totalHeatLoss()
| double fixture_heat_loss::totalHeatLoss |
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double |
specific_heat, |
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double |
feed_rate, |
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double |
initial_temperature, |
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double |
final_temperature, |
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double |
correction_factor |
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) |
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This function computes the heat loss caused by fixtures, trays, conveyor belts, and similar equipment that enter the furnace at lower temperatures and are heated to the furnace temperature. The calculation assumes there is no melting or phase change of the fixture material involved.
- Parameters
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| [in] | specific_heat | Specific heat of fixture material \([\unit{\btu\per\pound\degreeFahrenheit}]\) |
| [in] | feed_rate | Feed rate of fixture material \([\unit{\pound\per\hour}]\) |
| [in] | initial_temperature | Initial temperature of fixture \([\unit{\degreeFahrenheit}]\) |
| [in] | final_temperature | Final temperature of fixture \([\unit{\degreeFahrenheit}]\) |
| [in] | correction_factor | Correction factor \([\unit{\unitless}]\) |
- Returns
- Total heat loss \([\unit{\btu\per\hour}]\)
- See also
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