The thermal insulation testing device for building walls is suitable for testing the thermal insulation properties of various materials such as walls, insulating glass and laminated glass. The equipment can realize the method of protective heat box and calibration heat box through different configurations. Accordingly, can according to specific condition, adjust measures to local conditions ground is used, give full play to its advantage.The box body of the equipment is made of "wood frame sandwich filled with polyurethane foam". The box body has good insulation and sealing performance, which makes the temperature control and experimental repeatability more stable. It is the first one in China.
1. standard of execution
GB/T13475-2008《Thermal insulation - Determination of steady-state thermal transmission Properties - Calibrated and guard hot box》
2. Main technical parameters
1)保护热箱法
2)标定热箱法
| 计量箱 |
热箱 |
| 测量面积:1.2×1.2 m |
测量面积:1.84×1.84 m |
| 结构特点:
与防护箱采用移动方式连接的结构,提高了设备的绝缘和密封效果 |
规格:L2140×W780×H2140 mm |
| 控温范围:环境温度~+50℃连续可调 |
| 控温范围:环境温度~+50℃连续可调 |
箱内空气温度波动:≤±0.1℃ |
| 箱内空气温度波动:≤±0.1℃ |
加热功率:≤700W |
| 加热功率:≤700W |
|
| 保护盒 |
冷箱 |
| 规格:L2140×W780×H2140 mm |
规格:L2140×W450×H2140 mm |
| 控温范围:环境温度~+50℃连续可调 |
制冷功率:≤1500W |
| 箱内空气温度波动:≤±0.2℃
加热功率:≤700W |
冷箱控温范围:环境温度~-20℃连续可调(环境温度25℃以下) |
| 冷箱: |
箱内空气温度波动:≤±0.2℃ |
| 规格:L2140×W450×H2140 mm |
加热功率:≤2000W |
| 箱内空气温度波动:≤±0.1℃ |
|
| 控温范围:环境温度~-20℃连续可调 |
标本盒: |
| 制冷功率:≤1500W |
尺寸:L2140×W400×H2140 mm |
| 加热功率:≤2000W |
Equipment power supply: three - phase five - wire system380V 4.8kW |
|
标本盒:
|
铂电阻温度传感器数量:108个 |
| 尺寸:L2140×W400×H2140 mm |
测量误差:≤±5% |
| Equipment power supply: three - phase five - wire system380V 5.5kW |
|
| 铂电阻温度传感器数量:126 |
|
| 测量误差:≤±5% |
|
3. Temperature control system
由于试验系统对试验箱内工况的了解范围较大(-10℃、20℃),所以在生产制冷系统时只能按照最低温度试验要求,同时考虑确定冷却效率,冷却速度和控温精度要求很高,如果加热功率恒定,很难保证温度的稳定性,我公司采用电脑PID控制方法,计量箱、屏蔽箱和冷箱的温度控制相当稳定。
4. model
| 尺寸 |
检测方法 |
测量盒开口尺寸
(长×宽) |
设备总体尺寸
(长×宽×高) |
| JW10 |
校准热箱法 |
1000×1000毫米 |
1500×1500×1500mm |
| JW12 |
保护热箱法 |
1200×1200毫米 |
2400×2500×2450毫米 |
| JW18 |
校准热箱法 |
1800×1800毫米 |
2400×2500×2450毫米 |