How Does Coaxial Heat Exchanger Work?

coaxial heat exchanger shapes

What is a coaxial heat exchanger?


A coaxial heat exchanger is a kind kind of tube heat exchanger, it is usually used as condenser or evaporator  in a heat pump, marine air conditioner, swimming pool, water chiller etc. Mostly it is a water cold heat exchanger. The structure can be as round, rectangle, spiral, double helix and so on.


The structure of coaxial heat exchanger



tube in tube heat exchangerThe coaxial heat exchanger is designed as a "tube in tube" structure. Usually the outer tube is made of steel/copper, and the inner tube can be titanium, copper, copper-nickel depending on the requirements of working condition.  For the inner tube is has many spiral grooves on the surface, which will enlarge the connection surface and get more heat transferred.

coaxial heat exchanger inner structure

How does the heat exchange in the coaxial heat exchanger?



 Mostly water flow  in the inner tube and refrigeration flow between the outer & inner tube(refrigeration loop). The temperature of refrigeration and water are different, so heat will transfer from one with high temperature to the other one. The mostly it is counterflow.

Above is a kind of coaxial heat exchanger from HZSS. The water flow into the inner tube from bottom and flow out from the top. Refrigeration gas will flow into the refrigeration loop from the copper tube whose diameter is large, and refrigeration liquid flow out from the small diameter one.

Comments

  1. Aic Heat ExchangersDecember 16, 2019 at 2:41 AM

    I really appreciate this post. I’ve been looking all over for this!

    ReplyDelete
    Replies
    1. bossSeptember 19, 2020 at 3:43 PM

      interesting post
      will this coaxal drop room temp water down to 6-8 celcius with a 1/4 hp refridgerated heat pump ?

      Delete
  2. LordfintubeJanuary 18, 2021 at 8:03 PM

    Hi we are finned tube manufacturer. The Finned Tube regularly used in air cooler and other heat transfer equipment, our website www.lordfintube.com

    ReplyDelete
  3. alaquaincsalesJanuary 19, 2022 at 1:19 AM

    Thanks For Shareing This you blog is Really very nice in this blog I relly like this topic.If one of the heat exchanger makers’s cells cracks. the gases being burnt – carbon monoxide, sulfur dioxide. and nitrous oxide – might escape into your home. causing disease or in the worst-case scenario, death.

    ReplyDelete
  4. Adam WiseFebruary 9, 2022 at 9:31 PM

    I was just digging for some information about coaxial heat exchangers and found this post. This post contains brief information about coaxial heat exchanger and its structure. It can be helpful for anyone looking for information about coaxial. Thanks for sharing this blog.

    ReplyDelete
  5. alaquaincsalesMarch 24, 2022 at 11:28 PM

    This comment has been removed by the author.

    ReplyDelete
  6. Top Kids' schoolApril 20, 2022 at 11:35 PM

    You don’t need to be an expert technician to troubleshoot your plate heat exchanger (PHE). PHEs are long-lasting, however, they do occasionally have performance difficulties. Leakage outside the unit, leakage within the unit, and pressure drop are the three most common problems with PHEs. The majority of these problems are simple to identify and resolve with evaporators services.

    ReplyDelete
  7. jcequipmentsJuly 6, 2022 at 12:11 AM

    Nice Article Heat Exchanger Manufacturers in India

    ReplyDelete

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