vacuum tube gtc-58s-alu solar collector

solar collector, solar collector, solar collector, solar collector, solar collector, solar collector, solar collector, solar collector, solar collector, solar collector, solar collector, solar collector, solar collector gtc solar collector are widely used for home and project installation and workable for any roof and tile installation. capacity can be from 150L to tons as reqestment. gtc also makethe united union projectand hotel project,our gtc solar sytem are get CE ISO ROHS CSA certifcaiton and also give guarrantee for the whole sytem. more items and projects see our web atww.gtc-solar.comgtc solar also done the united union project and some 5 star hotel project, swimming pool project,etc. all in one word gtc solar is making qualitified solar sytem and always provide and develop most efficiency solar sytem for our future customer. pleasecontact wiht us freely 1) Model no.: GTC-58-alu 2) Adopts U pipe technology 3) No of tubes: 18, 20, 24, 30 4) Disassemble: no 5) Total length (m): 1.65/1.90/2.00/2.45 6) Total width (m): 1.9 7) Gross absorb area (m²): 3.14/3.50/3.80/4.66 8) Aperture area (m²): 2.52/2.96/3.36/4.20 9) Surface absorber (m²): 2.18/2.30/2.42/3.03 10) Reflector: non 11) Operation pressure (Bar): 8 12) Entry connector size: ½" male/copper tube 13) Material of manifold: anodized aluminum, 2mm 14) Material of U pipe and manifold head: TU1 copper 15) Insulation of manifold: polyurethane 16) Slot of thermic sensor: yes 17) Cold resistance: -30 18) Liquid capacity: 2.8/3.2/3.80/4.70 19) Total weight (kg): 39/42/47/65 20) Min. flow (L/m): 120 21) Typical flow (L/m): 150 22) Max. flow (L/m): 600 23) Stagnation temperature (°C): 300 24) EN 12975 (solar keymark) in course 25) Date: October 15 26) Efficiency (n0 in %, k1 in W/m²K, k2in W/m²/K²); n0=0.77, k1=1.47, k2= 0.0051 Tubes: 1) Hail resistance: ≤25 2) Diameter of tube (mm): 58 3) Glass quality: borosilicate, 3.3 (T=0.91) 4) Thickness (mm): 1.7 5) Vacuum degree (Pa): 3 x 10-3 6) Absorb rate: ≥0.94 7) Reflecting emission: <0.06 8) Material of coating: SS-C/CU solar energy, solar energy, solar energy, solar energy, solar energy, solar energy, solar energy, solar energy, solar energy, solar energy, solar energy, solar energy, solar energy, solar energy, solar energy, solar energy, solar energy, solar energy, solar energy, solar energy, solar energy, solar energy, solar energy, solar energy,