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exchanger

A heat exchanger is a system used to transfer heat between two or more fluids. Heat exchangers are used in both cooling and heating processes. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact. They are widely used in space heating, refrigeration, air conditioning, power stations, chemical plants, petrochemical plants, petroleum refineries, natural-gas processing, and sewage treatment. The classic example of a heat exchanger is found in an internal combustion engine in which a circulating fluid known as engine coolant flows through radiator coils and air flows past the coils, which cools the coolant and heats the incoming air. Another example is the heat sink, which is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium, often air or a liquid coolant.

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  1. S

    Vaillant Turbomax Plus 828E leak at Main Heat Exchanger connection

    The copper pipe that connects is on the LHS (view from front) and I get a small leak every other day. Do not have to top up frequently, just wipe away. Also has developed an occasional S.54 fault "delay mode due to flow temperature gradient too steep" which means the hot water runs cold with no...
  2. C

    Secondary heat exchanger.

    I think I’m going to get the secondary heat exchanger changed on my Baxi Platinum 28HE as my heating engineer has already cleaned it out a few year ago. My hot water is now once again fluctuating warm/hot as it did before. As a point of curiosity is there much difference between a 16 plate and...
  3. J

    Water Test Results - Heat Exchanger Pack In

    Hi Our Vokera boiler was installed just over a year ago. The Heat Exchanger gave up the ghost last week and the engineer took a water sample and stated that is was likely that the system hadn't been flushed property and there were still chemicals present. I have received the water results but...
  4. J

    Heat exchanger air vent open

    Hi. Just discovered water dripping from the heat exchanger automatic air vent. Dripping from the plastic screw head. Should this be open in everyday use or only when filling the system? Ta
  5. M

    Atag 203c heat exchanger

    Hi. I have been to this boiler today which said it needed the pressure topping up. Did it and called out again 3hrs later. Topped up again and watched the condensate and it drips often when cold. Anyone else had experience of these heat cells leaking. Cheers
  6. A

    Radial heat exchanger cleaning?

    Evening guys, Whats the best stuff to use to clean up a radial heat exchanger. (Baxi duo tec 33 HE a) Usually use water sprayer with nylon brush/tooth brush & wet vac to remove any loose deposits. Was thinking of alt way, maybe chemicals to speed up process. Cheers, Andy
  7. hary_j

    Expansion vessel leaking or blocked heat exchanger

    Evening gentlemen, Stopped at my last job today, it was a vaillant eco tec plus 837 combi. Boiler is building excessive pressure, whether it be on DHW or CH mode. Upon firing up on CH mode, pressure rises to maximum and prv lets by at 3.5bar all within around 5-10mins of being operational. I...
  8. T

    Heat Exchanger leaking - advice needed

    Hi all, We have a 4 year old boiler. Was serviced the other day and the engineer explained the heat exchanger is leaking. Also the system is asking for water (F and E tank in the attic is constantly dripping/clear of the overflow). We are at a bit of a loss as to what has happened. At first...
  9. C

    combi with stainless steel heat exchanger

    have decided a stainless steel exchanger is what i want in boiler, as it seems to be when you buy breakdown cover some places exclude heat exchanger i know baxi platinum is , awaiting installer list from ATAG but unsure they will be too new for back up support in my area, so whats best i had...
  10. C

    HEAT EXCHANGER IS STEEL MUCH BETTER boiler advice needed

    in need of a new boiler, i know baxis are popular with some plumbers especially in the NE of england im after a boiler whats best for me Not whats best for the plumber to fit, without paying top price for a worcester. but i been told a gloworm ultimate is made by valliant now and glow worm...
  11. N

    Lukewarm 'hot' water - secondary heat exchanger already changed

    Hi, I'm looking for help with a persistent problem. I have a Vaillant TurboMax Plus 837E combination boiler which appears to be in fine working order. However, it provides only lukewarm water to the taps and shower. To date three engineers have looked at it but failed to resolve the problem...
  12. D

    Baxi Main eco 30 combi Heat exchanger screws burred

    Help! Above boiler needs H/E cleaning or replacing but looks like some one tried before and they have completely burred the inside of the screw. The screw looks like it has an 8m external socket head but less than 1mm protrudes so can not get a socket on. Any one with any idea how to get these...
  13. R

    Baxi 105 HE heat exchanger connection question

    Hi All, I've re-fitted the primary heat exchanger on a Baxi 105 HE and there is a leak from the return pipe connection. I've tried cleaning all mating surfaces and refitting using putty but to no affect. It's a push fitting of the copper pipe into the heat exchanger and is held in with a clamp...
  14. M

    Alloy heat exchanger scaled up - what to use

    Hello, What chemical should I use on a scaled up alloy heat exchanger, its from an ideal icos. I have been told spirits of salts what I usually use on aluminium heat exchangers may crack the cast alloy heat exchangers? I was trying to post this in the GSR forum however as I have just put my...
  15. A

    spring baffles in secondary heat exchanger

    Hi chaps, Pet hate of mine..... but just how do you clean these darned springs in a warm flow HE boiler? cheers dave
  16. O

    Logotherm meibes Problem

    Hi lads, Just came across one of the German HIU units. The problem I am facing is the fluctuating hot water. According to the customer it goes form hot to cold while having a shower or washing dishes. I went out and checked the unit and it fluctuates at the whole property ( block of flat ). I...
  17. V

    Worcester Bosch Greenstar 24i (installed 2011) pressure dropping & PRV overflow leak

    Hello All My Boiler is dropping pressure and the hot taps are running lukewarm. Pressure was never great..3 floors up so only ever just over 1 bar. I called out the Gas Safe engineer who usually services the boiler and he said that the flat plate exchanger would most likely be scaled up...
  18. J

    potterton staesman flowsure plate heat exchanger

    Hi I have a potterton staesman flowsure oil combi and I looking for a replacement plate heat exchanger I think the part number is 26009107, I was wondering if there is a cheaper copy out there. thanks in advance JJ
  19. H

    Glowworm Flexicom 30CX combination boiler Heat Exchanger problem?

    Hello, I am a female and single and at the mercy of some unsrupulouse plumbers. I have hired two and there are problems. I really need some advice. Here is the story. 1. January. Boiler failed, no power, plumber 1 attended replaced pump new part, he said was a pump but no power on pcb...
    • helenmary
    • Thread
    • arial boiler color combination exchanger flexicom glowworm heat heat exchanger oil plumber problem
    • Replies: 4
    • Forum: Plumbing Jobs | The Job-board
  20. T

    Intergas boiler fault

    Oh dear My thread was closed by the closed minded moderator and the nonsense that I need a GSR engineer to answer a question. I have never met a more arrogant bunch of knuckle draggers as you lot who tar everyone with the same brush. Forum? my arse it's a closed shop for people who can't get...
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