Thermal Radiation Performance Tester(RPP)
The Thermal Radiation Performance Tester (RPP) is designed to evaluate the radiant heat protection performance of flame-resistant materials used in thermal protective clothing. It measures the thermal energy transmitted through a specimen exposed to a controlled radiant heat source, providing data for assessing the material's resistance to radiant heat.
Radiant heat is one of the major forms of thermal exposure that can cause injury to workers in high-temperature environments. The RPP test focuses on radiant heat exposure, while the Thermal Protective Performance (TPP) test evaluates protection against combined convective and radiant heat.
The instrument provides an adjustable heat flux density of 10–80 kW/m² and uses a calorimeter to measure heat transfer through the test specimen. It is suitable for evaluating flame-resistant fabrics and protective clothing materials used in firefighting, forestry operations, and other occupational environments involving radiant heat exposure.
Application
(1) Flame-resistant fabrics used in thermal protective clothing.
(2) Protective clothing for firefighting and forestry operations.
(3) Heat-resistant textile materials for industrial workers.
(4) Single-layer and multilayer protective fabric assemblies.
(5) Comparative evaluation of radiant heat resistance among different materials.
(6) Thermal protection material development and quality control.
Standards
ISO 6942:2022 — Protective clothing — Protection against heat and fire — Method of test: Evaluation of materials and material assemblies when exposed to a source of radiant heat
Parameters
| Parameter | Specification |
|---|---|
| Heating power | 6.5 kW |
| Power supply for heating system | AC 220 V, 50 Hz |
| Heating element dimensions | Length: 178 mm; diameter: 8 mm |
| Heat flux density | 10–80 kW/m² |
| Radiant source temperature control | 1,200°C ±5°C, as indicated in the source; confirm the original notation |
| Radiant source temperature sensor | Thermocouple, 0–1,600°C |
| Calorimeter heat capacity | 480.937 J/K |
| Calorimeter temperature specification | Source states −80°C; exact range or limit requires confirmation |
| Heating area | Source states 50 mm² × 50 mm²; confirm the intended dimensions and units |
| Test environment | 15–35°C, in a room without air circulation |
Features
(1) Evaluates the radiant heat protection performance of flame-resistant materials.
(2) Provides adjustable heat flux density from 10 to 80 kW/m².
(3) Uses a controlled radiant heat source to simulate thermal radiation exposure.
(4) Measures heat transfer through test specimens using a calorimeter.
(5) Supports calculation of Radiant Protective Performance (RPP) values according to the applicable test procedure.
(6) Helps compare the radiant heat resistance of different protective textile materials.
(7) Supports material screening, product development, and quality control.
(8) Designed for controlled laboratory testing under stable environmental conditions.
(9) Helps identify differences in thermal protection performance for material evaluation and process improvement.
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