Material Details

Production Model

BBG4718-30

Flow type

Heat pipe

Heat pipe material

PURE copper

Heat pipe size

 Top: Ø14* 1mm;     Body: Ø8* 0.7mm

Tube diameter

φ47/1800mm or φ58/1800mm

Solar vacuum glass tube

High boron-silicon(Triple-target)

Coating of absorber on glass tube

CU/SS-ALN(H)/SS-ALN(L)/ALN

fins around heat pipe

SINGLE long Aluminum(1.68m)

Manifold pipe material

TP2 copper (Ø35x0.8mm)

Manifold casing material

6063 Aluminum alloy (2.0mm)

Insulation material in manifold casing

Glass fiber

Thickness of insulation(mm)

45

Density of insulation (kg/m3)

90

Frame material

 Aluminum alloy frame(2mm)

Frame and manifold casing finish

Black Powder coated

Sealing Materials

Silicone

Technical Data of Heat pipe collector

Production Model

BBG4718-30

BBG4718-20

Numbers of tube(pcs)

30

20

Absorber area approx.(m2)

2.439

1.626

Gross size(m)

1.99*2.1*0.154

1.99*1.4*0.154

Weight Empty(kg)

93.5

63

Hydraulic Connections

G3/4" male thread

Fluid volume(L)

1.7

1.2

Min. volume flow rate per collector(L/H)

108

72

Rated volume flow rate per coll.(L/H)

180

120

Max. volume flow rate per collector(L/H)

1200

1200

Maximum operation pressure(Bar)

6

Test pressure(Bar)

9

Heat transfer fluid

Anti-freeze Fluid (Water-Glycol)

Max.working temp.

250C

hot water(L/Day)

240C

160

ΔT

35C(Radiation>=800w/m2.day)

Collector efficiency

76.4%                                    76.2%

Medium

Pure water

Start-up Temperature of heat pipe

<=30C

Warranty

15 years, Vacuum tube for 5 years