Evacuated vacuum tube By Qingdao Allrise Import & Export Co, Ltd,

Evacuated vacuum tube

离岸价格

获取最新报价

15 USD / Piece

1000 Piece Minimum Order

国家:

China

型号:

58mm/1800mm

离岸价格:

15 USD / Piece （面議）获取最新报价

位置:

Qingdao

最小订单价格:

15 per Piece

最小订单:

1000 Piece

包装细节:

Carton with foam inside

交货时间:

7 days after payment

供应能力:

10000 Piece per Day

付款方式:

T/T, L/C

產品組 :

Evacuated vacuum tube

产品规格

Brand Name: Sunrain
Specification: Normal
Application: Commercial
Work Time (h): 24h

详情

The tubes are made from low emissivity borosilicate glass (glass with a very low iron content that has superior durability and heatresistance ) with an all-glass seal and they employ AL/N on AL selective coating, which enables the use of the whole solar energyspectrum to generate heat; this produces greater thermal efficiency in bright sunshine but also produces high efficiency in overcast ordiffuse sunlight conditions. Further, the tubes are evacuated and have a barium getter (vacuum indicator) which changes color fromsilver to white if a tube’s vacuum has been compromised.
         An examination of the tubes shows that the outside is actually 2 layers of glass and a vacuum has been created between them.A good way to demonstrate this would be to fill an empty tube with very hot water and notice that it does not even get warm as youhold the tube in your hands. That is because of the“thermos effect”created by having a vacuum between the layers of glass
      Evacuated-tube collectors can achieve extremely high temperatures (**0°F to **0°F), making them moreappropriate for cooling applications and commercial and industrial application. The collectors are usually made ofparallel rows of transparent glass tubes. Each tube contains a glass outer tube and metal absorber tube attached toa fin. The fin is covered with a coating that absorbs solar energy well, but which inhibits radiative heat loss. Air isremoved, or evacuated, from the space between the two glass tubes to form a vacuum, which eliminatesconductive and convective heat loss.
  The efficiency of evacuated tube solar water heater is more than *0%,It means that is converts more that *0% of the sunlight hitting its
surface to heat that can be used to heat water.The evacuated tube solar water heater is also very cheap to renew.The evacuated tubes are made from ultrastrong glass and heat resisted Pyrex with a double
wall construction.
      The inner tube of the glass is coated on its outer surface with a absorbant coating and on its inner surface with a reflective coating Inside each tube,all theair present is removed making a vacuum and a copper heat pipe is located through the center of the tube. Most of the heat from the sun is absorbed by thissealed heat pipe which contains an anti-freeze type liquid.
        As the heat rises, hot vapours from the antifreeze rise up to the top of the heat pipe where its copper connects with a header pipe throught which moreantifreeze flows. This hot antifreeze then pumped through pipes inside the hot water tank with the end result that thte water gets hotter and the antifreeze cooler.The antifreeze then continues around the system and back out to the solar water heater to be reheated. The copper at the tip of the heat can reach very heightdegrees easily heating anwter to around *0 degrees celcius.

国家:	China
型号:	58mm/1800mm
离岸价格:	15 / Piece （面議）获取最新报价
位置:	Qingdao
最小订单价格:	15 per Piece
最小订单:	1000 Piece
包装细节:	Carton with foam inside
交货时间:	7 days after payment
供应能力:	10000 Piece per Day
付款方式:	T/T, L/C
產品組 :	Evacuated vacuum tube