Talk:Vapor-compression refrigeration

message: A vapor-compression refrigeration system and a phase-change heat pump seem to be the same thing; the article on vapor-compression refrigeration even states, "a vapor-compression refrigeration system may sometimes be referred to as a phase change heat pump," which indicates we don't need an article for each.  The same suggestion to merge has been made on the talk page for the phase change heat pump article. Tobinmarcus 16:01, 6 July 2006 (UTC)
replies: text: Tobinmarcus, I strongly disagree with merging the two articles. Yes, vapor-compression refrigeration and a heat pump are simply two sides of the same thermodynamic cycle.  However, refrigeration and heat pumps are, in the common and widely accepted usage, two distinctly separate techniques. The articles have been written for a wide range or readers ... and not just for thermodynamic purists (not to say that that was your motivation). This article's inclusion of the statement "a vapor-compression refrigeration system may sometimes be referred to as a phase change heat pump" is simply for the purpose of explaining that there are other names for vapor-compression refrigeration ... it is not a reason for merging. . Again, I strongly believe they should remain as separate articles and therefore I am going to take the bold action of removing the merge tag. - mbeychok 18:37, 6 July 2006 (UTC)
replies: text: I agree that heat pumps and this article should not be merged.  However, Phase change heat pump should be merged into this VC article, but maybe with some content going to heat pumps.  The phase-change heat pump's figure is colorful and might make a nice intro to this article, but I do have a problem with the blue 'coolth' arrow shown on it ...    129.237.114.171 21:41, 8 November 2006 (UTC)
replies: text: I disagree that Phase change heat pump sould be merged with this article. Phase change heat pumps (with reversing valves so that they can function as air coolers or as air heaters) are, to a large extent, primarily used in HVAC applications in residential homes and other buildings.  On the other hand, vapor-compression refrigeration is very widely used in large-scale industrial processes as well as in air conditioning and I strongly believe it deserves to be a stand-alone article. As for the image in the Phase change heat pump   article, it is indeed colorful but it also simplistic. It is a nice "logo" type image but it does'nt adequately depict the vapor-compression system. In my opinion, it would be much better to merge Heat pump and Phase change heat pump. mbeychok 23:19, 8 November 2006 (UTC)
thread_title: Merge

message: The "Disadvantages" heading states that many vapor-compression refrigeration systems are "still" using HFCs (true) and that HFCs contribute to ozone depletion (huh?).  The point of switching to HFC refrigerants (like R-134a and R-410A) is that they don't contain chlorine.  By my understanding, it's only chlorine and bromine that affect the ozone layer.  According to the article on ozone depletion, fluorine reacts with water so quickly that its effect on the ozone layer is trivial.  Was HCFC meant here instead?
Mind you, the entire haloalkane family has massive Global warming potential compared to CO2.  But that's a separate problem. Chronos Tachyon 12:58, 26 May 2007 (UTC)
replies: text: Chronos Tachyon, if you believe that the change should be made, then be bold and make the change in the article. - mbeychok 15:54, 26 May 2007 (UTC)
replies: text: Done.  I think whoever wrote that section got confused by the Coca-Cola press release, which was talking about global warming and not ozone depletion.  Chronos Tachyon 05:15, 9 June 2007 (UTC)
thread_title:  Ozone depletion 

message: I added HVAC to the "see also" section, and alphabetized the list
johntindale 20:06, 6 June 2007 (UTC)
thread_title:  Minor Change 

message: R12 never took over in the 3rd world like they did here, highly flammable hydrocarbon gases have long been the standard refrigerant, butane, propane etc. Article seems to ignore this at the mo.
Tabby (talk) 04:45, 6 January 2008 (UTC)
thread_title:  3rd world 

message: This section introduces references to "CFC"s without really explaining or linking to this topic.  I think some revision is in order.
Ericnoel (talk) 00:45, 9 September 2008 (UTC)
thread_title:  Refrigerants 

message: I would think that the description should mention the irreversibility of the pressure drop through the expansion valve, and the efficiency loss that entails.  I'm not sufficiently expert to be comfortable writing that in--hence this encouragement for someone else to take that one.  Or at least encouragement to anyone who wonders about it and finds this note to go read a book about it rather than stopping with this article (always a good idea anyway).Ccrrccrr (talk) 20:10, 14 December 2008 (UTC)
thread_title:  Expansion valve 

message: I removed a bunch of unsourced ozone-depletion science propaganda from the section on Freon and replaced it with a reference to ozone depletion where discussion of that topic belongs. John Chamberlain (talk) 15:18, 9 September 2009 (UTC)
replies: text: I'm not sure what you mean by "science propaganda".  Usually propaganda is criticized if it's unscientific...  Were there components of that you thought were dubious and in need of sources?  I found it useful as a very concise summary of ozone depletion, staying to the well established non-controversial components of that article.Ccrrccrr (talk) 21:19, 9 September 2009 (UTC)

text: Seeing no reply I'm proceeding with a revert.  Then if we can identify specific problems with that material, we can address those.  Ccrrccrr (talk) 19:57, 13 September 2009 (UTC)
thread_title:  Removal of Ozone Depletion Propaganda 

message: I think this section heading is almost verging on 'miscellaneous' and as such I would like to re-title to something like 'refrigeration system design and components', and expand and rearrange the text to better describe the aspects of typical refrigeration system design
Pahazzard (talk) 21:44, 12 September 2010 (UTC)
thread_title: Other features and facts of interest

message: The "Thermodynamic analysis of the system" section is completely empty, but for a single image,
(Adding insult to injury, at least on my browser, this image is formatted to show mainly in the next section).
The image is also used in the Heat pump and refrigeration cycle article, along with some actual text.
Should the section just be removed? Tøpholm (talk) 23:10, 9 December 2010 (UTC)
replies: text: Replaced the original text for this section which somehow got removed by someone. mbeychok (talk) 03:08, 12 November 2011 (UTC)
thread_title:  Empty section? 

message: Substituted at 09:49, 30 April 2016 (UTC)
thread_title: Assessment comment

message: - Is this page locked from editing?  The subject seems fairly non-controversial.
- Is there a blatant commercial advertisement included (Danfoss)?
200.68.142.11 (talk) 19:24, 7 January 2019 (UTC)
replies: text: "Seems fairly non-controversial", yes, but last year we had some serious problems with an editor who had some, shall we say idiosyncratic ideas  about what should be in the article. DS (talk) 04:41, 8 January 2019 (UTC)
thread_title:  WHY? 

message: What is relation to Siemens cycle? (c.a. 1852) 2A02:168:F609:0:5F8:C25A:2F16:ECD5 (talk) 03:42, 26 June 2019 (UTC)
thread_title:  Siemens cycle 

message: Hi, I was wondering how Vapor-compression refrigeration really differs from Reverse Ranking cycle or Reverse Brayton Cycle. It looks identical to me. 2A02:168:F609:0:5F8:C25A:2F16:ECD5 (talk) 20:05, 26 June 2019 (UTC)
thread_title:  Reverse Ranking cycle? 

message: The article repeatedly uses the word "reject" to refer to heat being transferred. This word choice strikes me as rather odd. Is that a common way to describe this? —BarrelProof (talk) 23:21, 17 November 2019 (UTC)
thread_title:  Heat being "rejected"? 

message: The last line of the first para states, "This is where the circulating refrigerant rejects heat from the system and the rejected heat is carried away by either the water or the air (whichever may be the case)." What does " this is where" indicate? It is not specified.
So, I suggest an edit in this section with mentioning about the Condenser or making another para explaining the step involving the condenser before this line. Unanimous350 (talk) 18:14, 26 March 2021 (UTC)
thread_title:  Requesting edit in Description of vapor-compression refrigeration 

message: THE ABOVE IS TOTALLY INCORRECT:
The fan is used to cool vapor so that it condenses in the condenser line.  The fan alone is not sufficient: the radiator is also radiative and can operate without a fan.  The heat of vaporization, AMAZINGLY NEVER MENTIONED, is imporant part of the heat transferred in the evaporator:  the heat of expanding gas alone does cool but not suffiencly (beer bottle cool with serious moisture issues).  Without a cooling the condensing coil the PSI needed for vapor to liquid phase change (which adds heat of vaporization necessary for target cooling) would be absolutely impractical. — Preceding unsigned comment added by 2601:143:480:a4c0:4ecc:6aff:fe8e:47d (talk • contribs) 15:46, 18 July 2021 (UTC)
replies: text: Firstly: Please look up acceptable editing practices, this is an absolute mess. I added a mention of the evaporation absorbing heat since that was a little unclear, I'm having trouble parsing the rest though. MasterTriangle12 (talk) 09:38, 19 July 2021 (UTC)
thread_title:  AS USUAL - THE ARTICLE IS TOTALLY INCORRECT - AND CANCEL CULTURE DELETES EDITS 

message: write an article for publication school magazine of the topic, "causes and effects of road accident 154.161.51.159 (talk) 09:29, 13 May 2024 (UTC)
thread_title:  English language