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Personne àcontacter Mr. ALLEN
168 Jixin Road, Shanghai, Shanghai
Twisted tube
   Twisted tube is a kind of enhanced heat transfer tubes that firstly presented by Swedish Alards Company, and then improved by the USA Koch Heat Transfer Company, LP.
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| Fig. Structure of twisted tube | Fig. Twisted tube with carbon steel, stainless steel, copper |
Structure and manufacture of twisted
tube
   The structure
feature of twisted tube is that every cross section is an
oval, when when assembled into heat exchangers they
exchanger they can be mixed bundles (that is, the mix of
twisted tubes and bare tubes), and also can be a pure
twisted tube bundle.
   The
manufacturing process of twisted tube includes:"partial
pressure" and "distortion". The tubes cross section is
nearly an ellipse, of which the ratio of long axis and
short axis is designed according to the flow velocity in
tubes passes and shell passes of heat transfer tubes. When
the flow rate in tube pass is low, the ratio of the long
axis and short axis shall be increased, or the flow surface
shall be reduced in order to increase the flow
rate.
Enhanced heat transfer principles of
twisted tube
   The unique
structure of twisted tube can make the flow in tube pass
and shell pass in the spiral motion at the same time, by
this way it enhanced the turbulent intensity. The heat
transfer coefficient of the twisted tube is *0% higher than
the normal one, but the pressure drop is almost the
same.
Advantages of heat transfer with twisted tube
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| Fig.  Stereogram of the twisted tube (Stainless steel) | Fig.  Stereogram of the twisted tube (Carbon steel) | Fig. Stereogram of the twisted tube (Cooper) |
   Seamless steel twisted tubes used for producing heat exchangers are complete ones without joints. Common materials used in steel tubes shows in bellow chart。
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| Fig. Twisted tubes produced by our company | Fig. Twisted tubes produced by our company |
Fig.
Twisted tubes produced by our
company  |
| Pays: | China |
| N ° de modèle: | - |
| Prix FOB: | Obtenir le dernier prix |
| Localité: | - |
| Prix de commande minimale: | - |
| Commande minimale: | - |
| Packaging Detail: | Wooden box |
| Heure de livraison: | face to face |
| Capacité de Fournir: | - |
| Payment Type: | - |
| Groupe de produits : | - |
