The Effect of Plate Thickness on Heat Storage and Radiation Performance
Briefly introduce the influence of plate thickness on heat storage and radiation performance.
The Effect of Plate Thickness on Heat Storage and Radiation Performance
Plate thickness is a key parameter in the design of far-infrared honeycomb ceramic combustion plates, directly affecting heat storage capacity, radiation efficiency, and thermal shock resistance.
The Influence of Thickness on Performance
Thickness | Heat Storage | Heating Rate | Radiative Efficiency | Thermal Shock Resistance | Temperature Stability |
Thin Plate (10-15mm) | Low | Fast | High | Good | Poor |
Medium-Thick Plate (15-25mm) | Moderate | Fast | High | Good | Good |
Thick Plate (25-35mm) | High | Slow | Lower | Poor | Good |
Key Trade-offs
Thin Plate: Small internal and external temperature difference, uniform surface temperature, high radiation efficiency; good thermal shock resistance, suitable for frequent start-stop operations. However, low heat storage capacity, and rapid temperature drop after shutdown.
Thick Plate: Large heat storage capacity, stable temperature, suitable for continuous operation. However, large internal and external temperature difference, surface temperature lower than internal (thermal hysteresis), slightly lower radiation efficiency; poor thermal shock resistance, prone to cracking with frequent start-stop operations.
Selection Recommendations
Different Operating Conditions | Recommended Thickness |
Frequent Start-Stop (>10 times/day) | 10-15mm |
Coating Drying (Intermittent Operation) | 15-20mm |
Continuous Operation (>8 hours/day) | 20-25mm |
Residual Heat Insulation Required | 25-30mm |
Summary
The impact of plate thickness can be summarized as follows: thin plates (10-15mm) heat up quickly, have high radiation efficiency, and good thermal shock resistance, making them suitable for intermittent operation; thick plates (25-35mm) have large heat storage capacity and stable temperature, making them suitable for continuous operation. 15-25mm is the mainstream thickness range, and the selection should be based on a comprehensive consideration of start-stop frequency and operating time. Thickness and material selection are equally important and should be considered together.