I will explain how to calculate the amount of thermal energy radiated from a far infrared heater.
The amount of thermal energy radiated from a far-infrared heater can be calculated using the following formula: Q = σ × ε × T⁴ × A σ: Stefan-Boltzmann constant = 5.6697 × 10⁻¹² (W·cm⁻²·K⁻⁴·h⁻¹) = 20.4 × 10⁻⁸ (KJ·m⁻²·K⁻⁴·h⁻¹) ε: Emissivity (0.9) T: Absolute temperature (273℃ + X℃) A: Heater surface area (m²) 【Calculation Example】 ○ Calculation example for a panel-type heater with an emissivity of 0.9 at 500℃, measuring 300×400mm → Thermal radiation energy Q = 20.4 × 10⁻⁸ × 0.9 × (273 + 500)⁴ × (0.3 × 0.4) = 7866 (KJ/h) ○ When manufacturing a heater with the above performance, → Since 1KW is 3600KJ, 7866/3600 equals 2185W → Therefore, theoretically, creating a 2.2kW heater would be sufficient. For more details, please contact us or download the catalog.
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【Trivia: Calculation Method for Radiated Energy】 ○ Formula to calculate the amount of thermal energy radiated from a far-infrared heater → Q = σ × ε × T⁴ × A σ: Stefan-Boltzmann constant = 5.6697×10⁻¹² (W·cm⁻²·K⁻⁴·h⁻¹) = 20.4×10⁻⁸ (KJ·m⁻²·K⁻⁴·h⁻¹) ε: Emissivity (0.9) T: Absolute temperature (273℃ + X℃) A: Heater surface area (m²) 【Calculation Example】 ○ Calculation example for a panel heater (300×400mm) with an emissivity of 0.9 at 500℃ → Thermal radiation energy Q = 20.4×10⁻⁸ × 0.9 × (273 + 500)⁴ × (0.3 × 0.4) = 7866 (KJ/h) ○ When manufacturing a heater with the above performance, → Since 1KW is 3600KJ, 7866/3600 equals 2185W → Therefore, theoretically, creating a 2.2kW heater would be sufficient. ● For more details, please contact us or download the catalog.
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We are a specialized manufacturer of far infrared heaters and heating devices. We offer a wide variety of heaters suitable for industrial heating. For clean heating and tact operation or fixed furnaces, we have panel heaters; for continuous heating via conveyors, we provide straight heaters; for precise temperature control or heating small components, we offer ceramic heaters; and for insulation or low-temperature heating, we have space heaters. Far infrared heaters are useful for heating, curing, and drying.