Evacuated Tube Solar Collectors By Royal Heater Co., Ltd.

Our customers can obtain from us a qualitative range of Evacuated Tube Solar CollectorsCollectors. These are made by using high quality material and designed by our experts. We offer our range at very competitive price to our clients.

StructureAll-glass double-tube co-axial structure
Glass materialHigh borosilicate 3.3 glass
External pipe diameter and thicknessI =47A 0.7mm&=1.6mm I =58A 0.7 mm&=1.6mm
I =70A 0.7mm&=2.0mm
Internal pipe diameter and thicknessI =37A 0.7mm&=1.6mm I =47A 0.7 mm&=1.6mm
I =58A 0.7mm&=1.6mm
Pipe length800mm 1200mm 1500mm 1600mm 1900mm 2000mm 2100mm
Absorptive coating propertyStructurea a /Cu/Ti-ALN(H)/Ti-ALN(L)/ALN
Sediment method3 target magnetron sputtering plating
Specific absorptionas =0.93~0.96(AM 1.5)
Emission ratioIuh=0.04~0.06i 80a A 5a i
Vacuum tightnessP a 5.0*10-3(Pa)
Idle sunning property parametersY=260~300m2.a /KW
Solar irradiation for obtaining a preset water temperatureHa 4.7MJ/m2(I 58)H=3.7~4.2MJ/ m2
Ha 3.7MJ/m2(I 47)H=2.9~3.2MJ/ m2
Average heat loss coefficientULT=0.4~0.6Wi m2a a i