what is the purpose of tube? why they are using tubes in heat exchangers & refridgeation.?

Question

differents between pipie & tube, application of tube & Purpose of using tubes.

Answer 1

The answer is hinted in your question! These are applications where heat needs to be dissipated or exchanged. That exchange occurs based on the amount of surface area that is available to expose heat to a cooler environment, so heat can escape.

An array of tubes is a good way to move air, or some hot fluid, or just conducted heat through a cooler environment, using all the surface area of the tube walls for the heat exchange.

Answer 2

I'm not sure whether the asker means that the pipes are insulated with rubber tubing or whether these have been used in place of the pipes themselves. If they are getting longer then it seems that they are not fit for the job. Assuming that they have been used in the Central Heating Pipes then my advice would be to do the flollowing. 1) If you must carry on using the CH then stop using that radiator. Shut of BOTH valves to stop the passage of water through the rad and the pipes leading up to it. This will help to reduce the damage to the pipes and the likelihood of a burst pipe. 2) Get the pipes changed to either copper or PEX type.(speedfit or Hep2o etc). The 'plumber' who did this work could be looking at a criminal neglegence charge if anyone in the house was injured as a result. I personally know of a similar situation where a builder was investigated for criminal neglegence when a badly fitted marble fireplace came off a wall nearly killing a little girl. She was hit but made a full recovery thanks to our wonderful NHS.

Answer 3

A pipe and a tube are pretty much the same thing, except that a tube usually has a thinner wall than a pipe.
Aside from that, I really don't understand *any* of your question.

HTH ☺

Doug

Answer 4

Sorry,I can not understand your question,are you talking about double tube (tube in tube ) heat exchanger?If yes,one tube (outer tube) for refridgeation pass and the other(inner tube) for water pass,can it help you?