Coefficient of performance: Revision history

Filter revisionsshowhide

To date:

Tag filter:

Invert selection

External tools:

For any version listed below, click on its date to view it. For more help, see Help:Page history and Help:Edit summary. (cur) = difference from current version, (prev) = difference from preceding version, m = minor edit, → = section edit, ← = automatic edit summary

curprev 08:5108:51, 2 September 2024‎ Graeme Bartlett talk contribs‎ m 12,045 bytes +4‎ depart in full undo

curprev 07:4907:49, 27 August 2024‎ Enemyofentropy talk contribs‎ m 12,041 bytes 0‎ →‎Theoretical performance limits: I believe the sign in the denominator is incorrect. undo Tag: Visual edit

curprev 06:4306:43, 15 August 2024‎ Citation bot talk contribs‎ 12,041 bytes +22‎ Added date. | Use this bot. Report bugs. | Suggested by Abductive | Category:Dimensionless numbers of thermodynamics | #UCB_Category 19/21 undo

curprev 12:2812:28, 18 June 2024‎ 2a02:2c40:400:b080::1:650 talk‎ 12,019 bytes +15‎ →‎Improving the COP: Made a short list of two options, improved the formula for Delta T (instead of describing the formula in words), added internal link to heat exchanger. undo Tag: Visual edit

curprev 15:5615:56, 10 April 2024‎ AnomieBOT talk contribs‎ m 12,004 bytes +16‎ Dating maintenance tags: {{Citation needed}} undo
curprev 13:5613:56, 10 April 2024‎ Kostelf talk contribs‎ m 11,988 bytes +19‎ No edit summary undo

curprev 23:2323:23, 31 December 2023‎ GA-RT-22 talk contribs‎ m 11,969 bytes −2‎ →‎Improving the COP: typos undo

curprev 02:1802:18, 20 November 2023‎ Giraffedata talk contribs‎ 11,971 bytes −109‎ COP doesn't account for all energy consumption; just the heat pumping work. Other measures measure total efficiency. undo

curprev 06:1506:15, 19 November 2023‎ WikiCleanerBot talk contribs‎ m 12,080 bytes −1‎ v2.05b - Bot T20 CW#61 - Fix errors for CW project (Reference before punctuation) undo Tag: WPCleaner

curprev 16:2016:20, 6 November 2023‎ 76.10.120.158 talk‎ 12,081 bytes +237‎ added a citation where needed undo

curprev 08:0708:07, 13 October 2023‎ 96.227.223.203 talk‎ 11,844 bytes +38‎ No edit summary undo
curprev 08:0308:03, 13 October 2023‎ 96.227.223.203 talk‎ 11,806 bytes −1‎ No edit summary undo

curprev 11:1111:11, 15 September 2023‎ 194.218.10.148 talk‎ 11,807 bytes −2‎ →‎Theoretical performance limits undo

curprev 00:4600:46, 18 August 2023‎ Natg 19 talk contribs‎ m 11,809 bytes +19‎ Disambiguating links to Energy efficiency (link changed to Thermal efficiency) using DisamAssist. undo

curprev 03:0203:02, 15 August 2023‎ Guy Harris talk contribs‎ 11,790 bytes −4‎ →‎Theoretical performance limits: Get rid of extra white space characters. undo

curprev 07:2507:25, 10 August 2023‎ Kku talk contribs‎ m 11,794 bytes +4‎ link [eE]nergy efficiency undo Tag: Disambiguation links added

curprev 18:2518:25, 28 July 2023‎ Dmd3e talk contribs‎ 11,790 bytes −149‎ No edit summary undo

curprev 21:3721:37, 17 April 2023‎ 68.119.233.31 talk‎ 11,939 bytes 0‎ →‎Improving the COP: Modified wording implying heat pumps can't produce hot water, which is incorrect. undo

curprev 09:5209:52, 24 February 2023‎ Dividingbyzerofordummies talk contribs‎ m 11,939 bytes +40‎ Added missing "the", commas etc. undo

curprev 10:3910:39, 8 February 2023‎ ReyHahn talk contribs‎ 11,899 bytes +156‎ labels vs variables undo Tag: Visual edit: Switched

curprev 09:3609:36, 7 February 2023‎ ReyHahn talk contribs‎ 11,743 bytes −4,426‎ →‎Example: unreferenced and unencyclopedic since 2012, it does more harm than good undo

curprev 20:2720:27, 22 October 2022‎ Comfr talk contribs‎ m 16,169 bytes +5‎ break down this complicated paragraph into smaller chunks undo

curprev 11:4011:40, 22 September 2022‎ Rwendland talk contribs‎ m 16,164 bytes +4‎ wl undo

curprev 13:1113:11, 18 September 2022‎ Rjghermsen talk contribs‎ m 16,160 bytes +31‎ →‎Theoretical performance limits undo

curprev 13:3113:31, 29 June 2022‎ 88.19.1.182 talk‎ 16,129 bytes +174‎ Grundfos link changed to archive undo

curprev 18:3618:36, 25 May 2022‎ Radulfon talk contribs‎ m 15,955 bytes −32‎ The statements in the sentences I modified are only correct for heat pumps and not for refrigerators. Thus I removed the refrigerator references! undo

curprev 00:0600:06, 21 February 2022‎ Cewbot talk contribs‎ m 15,987 bytes −15‎ Fix broken anchor: #Performance considerations→most alike anchor Heat pump#Performance undo

curprev 03:0303:03, 31 December 2021‎ Klaus Schmidt-Rohr talk contribs‎ 16,002 bytes +36‎ Added the equation relating the two coefficients of performance. undo Tag: Visual edit
curprev 02:5902:59, 31 December 2021‎ Klaus Schmidt-Rohr talk contribs‎ 15,966 bytes +467‎ Corrected signs in the equations based on the books by Planck and Fermi as well the universal convention for heat. undo Tag: Visual edit

curprev 18:3318:33, 23 October 2021‎ Nyq talk contribs‎ m 15,499 bytes 0‎ lc common nouns, adjusted wikilink undo Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit

curprev 03:3303:33, 1 October 2021‎ 64.112.177.129 talk‎ 15,499 bytes −1‎ No edit summary undo Tag: Manual revert
curprev 03:3103:31, 1 October 2021‎ 64.112.177.129 talk‎ 15,500 bytes +1‎ No edit summary undo Tag: Reverted
curprev 03:3103:31, 1 October 2021‎ 64.112.177.129 talk‎ 15,499 bytes 0‎ No edit summary undo Tag: Reverted

curprev 19:0019:00, 12 July 2021‎ AnomieBOT talk contribs‎ m 15,499 bytes +15‎ Dating maintenance tags: {{Citation needed}} undo
curprev 17:0017:00, 12 July 2021‎ 66.244.232.106 talk‎ 15,484 bytes +19‎ No edit summary undo

curprev 13:3813:38, 7 July 2021‎ Dolphin51 talk contribs‎ m 15,465 bytes +10‎ →‎Improving COP: Wikilinked undo
curprev 11:5811:58, 7 July 2021‎ WindTempos talk contribs‎ 15,455 bytes −24‎ Reverting edit(s) by 203.192.219.84 (talk) to rev. 1031620798 by Arjayay: Vandalism (RW 16.1) undo Tags: RW Undo
curprev 11:5711:57, 7 July 2021‎ 203.192.219.84 talk‎ 15,479 bytes +24‎ →‎Improving COP undo Tag: Reverted

curprev 17:0817:08, 2 July 2021‎ Arjayay talk contribs‎ m 15,455 bytes −4‎ Stray word removed undo
curprev 06:4606:46, 2 July 2021‎ Litesand talk contribs‎ 15,459 bytes +223‎ I edited the bizarre statement that claims heat pumps operate at over 100% efficiency, this is incorrect. The COP usually exceeds 1 for refrigerators and heat pumps, but no heat engine can have a thermal efficiency of 100% or greater. This article could be improved, especially by someone with a degree in thermodynamics (and I don't have one). The net work, or efficiency of a refrigerator, should not be confused with coefficient of performance. undo

curprev 08:1808:18, 5 May 2021‎ Dolphin51 talk contribs‎ m 15,236 bytes 0‎ Eliminated unnecessary capital letters in title. undo

curprev 04:5004:50, 28 April 2021‎ Kleinpecan talk contribs‎ 15,236 bytes −21‎ Reverted 1 edit by Aariz2810 (talk): Spam undo Tags: Twinkle Undo
curprev 03:5103:51, 28 April 2021‎ Aariz2810 talk contribs‎ 15,257 bytes +21‎ →‎External links undo Tags: Reverted Mobile edit Mobile web edit

curprev 20:4120:41, 19 April 2021‎ WikiCleanerBot talk contribs‎ m 15,236 bytes −2‎ v2.04b - Bot T20 CW#61 - Fix errors for CW project (Reference before punctuation) undo Tag: WPCleaner

2 September 2024

27 August 2024

15 August 2024

18 June 2024

10 April 2024

31 December 2023

20 November 2023

19 November 2023

6 November 2023

13 October 2023

15 September 2023

18 August 2023

15 August 2023

10 August 2023

28 July 2023

17 April 2023

24 February 2023

8 February 2023

7 February 2023

22 October 2022

15 October 2022

22 September 2022

18 September 2022

29 June 2022

25 May 2022

21 February 2022

31 December 2021

23 October 2021

1 October 2021

12 July 2021

7 July 2021

2 July 2021

5 May 2021

28 April 2021

19 April 2021