Recent Updates

COP OF REFRIGERATOR AND HEAT PUMP

We were discussing “Carnot cycle and its efficiency” as well as “Carnot theorem and its explanation” in our previous posts. We have also seen the concept of “corollary of Carnot’s theorem” and simultaneously “efficiency of a reversible heat engine” in our recent posts.

Today we will see here the coefficient of performance of a reversible heat pump or refrigerator.
As we have already discussed the “concept of heat pump in thermodynamics, where we have defined that heat pump is basically defined as a device which will be operated in a thermodynamic cycle and will transfer the heat energy from a lower temperature thermal energy reservoir to higher temperature thermal energy reservoir by securing work energy from surrounding.

Let us see one reversible refrigerator or heat pump, as displayed in following figure, which is receiving heat energy from lower temperature thermal energy reservoir at temperature T2 and transferring heat energy to higher temperature thermal energy reservoir at temperature T1 by securing work energy W from surrounding.

Let us see the coefficient of performance of reversible refrigerator and reversible heat pump

Performance of refrigerator or heat pump will be given by a term i.e. coefficient of performance and it will be written as C.O.P during writing or solving the problems.

For easy understanding of concept of Coefficient of performance i.e. C.O.P we will use one formula to avoid confusion and formula is as mentioned here 

C.O.P = Desired output/Required Input

For refrigerator:

Desired output term will be the heat flowing from lower temperature or cold thermal energy reservoir and it is also termed cooling effect.

For heat pump:

Desired output term will be the heat flowing towards higher temperature or hot thermal energy reservoir and it is also termed heating effect.

Required input term will be common for both cases i.e. for heat pump and refrigerator too and it will be work energy secured by system from surrounding.

Required input = W = (Q1-Q2)

Coefficient of performance for a refrigerator

Coefficient of performance for a refrigerator

Coefficient of performance for a heat pump

Coefficient of performance for a heat pump

Do you have any suggestions? Please write in comment box.
We will see another topic i.e. "Clausius theorem" in our next post in the category of thermal engineering.

Reference:

Engineering thermodynamics by P. K. Nag
Image Courtesy: Google

Also Read

51 comments:

  1. This is my first visit to your web journal! We are a group of volunteers and new activities in the same specialty. Website gave us helpful data to work. Warmtepompen

    ReplyDelete
  2. It’s very informative and you are obviously very knowledgeable in this area. You have opened my eyes to varying views on this topic with interesting and solid content. Zonnepanelen

    ReplyDelete
  3. A heat water siphon is something that can be effectively obtained from qualified online merchants willing to offer any sort of data one needs about customary heat water pumps or water to air heat pumps.Warmtepomp

    ReplyDelete
  4. You made such an interesting piece to read, giving every subject enlightenment for us to gain knowledge. Thanks for sharing the such information with us to read this... Zonnepanelen installateur

    ReplyDelete
  5. Hi, Nice and useful blog many thanks for sharing. The information you shared is worth in reading and this helps the readers to definitely gain some knowledge on refrigeration working. Good work! keep sharing this type of informative blogs frequently. R404 gas

    ReplyDelete
  6. We have sell some products of different custom boxes.it is very useful and very low price please visits this site thanks and please share this post with your friends. Warmtepompen

    ReplyDelete
  7. I might want to thank you for the endeavors you have made in composing this article. I am trusting the same best work from you later on too.. http://which12order.com/blog/top-10-best-refrigerators-india

    ReplyDelete
  8. Electrical professionals from Bestelectricians.joburg can now available in East Rand, and they offer their services cost effectively.

    ReplyDelete
  9. This post is really useful and helpful to know more about the things which you have shared. I appreciate you for such a great amount of information. I assure this would be beneficial for many people. Whirlpool Compact Refrigerator

    ReplyDelete
  10. Minimal Gigantic condensate knocks out will be simply made use of to shed a condensate while in the refrigeration plus air-conditioning models. These are typically tension challenge knocks out that may be hooked up around skyscrapers and also bathrooms. Often, the insufficient gigantic anti-condensate stripping knocks out are available thin plus small in size tank-style. https://pressurewasherguides.com/how-to-remove-pressure-washer-pump-from-honda-engine/

    ReplyDelete
  11. The different types are classified by where the freezer is located on the fridge. For example, a top mount refrigerator is called so because the freezer is located above the refrigerator. Similarly, the bottom mount refrigerator has the freezer located below.dryer repair oceanside

    ReplyDelete
  12. Heat pumps capacities like a climate control system in the mid year and an electric heater in the winter, consequently including both a heating and cooling unit in one gadget.Warmtepomp

    ReplyDelete
  13. I read a article under the same title some time ago, but this articles quality is much, much better. How you do this.. mini congelador vertical

    ReplyDelete
  14. Heat pumps typically are outdoor units that serve as air conditioners during the warmer months and heating sources during the colder months. Discover more from Billig varmepumpe | priser i 2019.

    ReplyDelete
  15. I can see that you are an expert at your field! I am launching a website soon, and your information will be very useful for me.. Thanks for all your help and wishing you all the success in your business. fridge repair

    ReplyDelete
  16. If, however, you are looking for a new kitchen refrigerator than you should obviously consider something much larger in size.Freezer Repair in Orange County

    ReplyDelete
  17. This is furthermore a fantastic write-up my partner and i really enjoyed considering. It really is generally not very each day my partner and i support the possibility to look at something. top ten submersible pumps

    ReplyDelete
  18. Awesome article, it was exceptionally helpful! I simply began in this and I'm becoming more acquainted with it better! Cheers, keep doing awesome! Wolf Appliances Repair Services in Santa Barbara

    ReplyDelete
  19. Awesome article, it was exceptionally helpful! I simply began in this and I'm becoming more acquainted with it better! Cheers, keep doing awesome! Residential Appliance Repair

    ReplyDelete
  20. I found your this post while searching for some related information on blog search...Its a good post..keep posting and update the information. Viking , Wolf, Dacor Stove & Range Repair Manhattan Beach

    ReplyDelete
  21. Positive site, where did u come up with the information on this posting?I have read a few of the articles on your website now, and I really like your style. Thanks a million and please keep up the effective work. Viking refrigerator repair Malibu

    ReplyDelete
  22. Awesome article, it was exceptionally helpful! I simply began in this and I'm becoming more acquainted with it better! Cheers, keep doing awesome! COMMERCIAL APPLIANCE REPAIR IN SANTA MONICA

    ReplyDelete
  23. Awesome article, it was exceptionally helpful! I simply began in this and I'm becoming more acquainted with it better! Cheers, keep doing awesome! Viking, SubZero ice maker repair in POINT LOMA

    ReplyDelete
  24. You made such an interesting piece to read, giving every subject enlightenment for us to gain knowledge. Thanks for sharing the such information with us to read this... Dacor, Viking, Wolf, KitchenAid, Ovens Repair in Pasadena

    ReplyDelete
  25. A liquidation sale on classifieds ads is one factor to have quality home appliances for a price that is so affordable. You can find out this through both online and in print classified ads to find liquidation companies that are holding the sales.Installateurs zonnepanelen

    ReplyDelete
  26. How does a Geothermal Heat Pump get the heat starting from the earliest stage? crompton arno neo aswh-2615 15 ltr(2kw)

    ReplyDelete
  27. One of the major signs that you need appliance repair can actually be found in your energy bills Stove Repair Dacor, Wolf, DCS, Vikin, NXR in San Diego

    ReplyDelete
  28. Like any new home expansion, choosing another fridge can be energizing. In any case, it can likewise be very tedious and confounding. Fridges come in all styles, brands, and materials, making picking the best one more troublesome than it might from the start appear. Refrigerator Repair SubZero, Viking, GE Monogram, Liebherr, Samsung, LG in San Diego

    ReplyDelete
  29. Im no expert, but I believe you just made an excellent point. You certainly fully understand what youre speaking about, and I can truly get behind that. Refrigerator Repair Sub-Zero, Viking, Scotsman, Kenmore, GE, U-Line, Monogram in Los Angeles

    ReplyDelete
  30. Many times the repair is inexpensive but remember, at some point, replacement parts for your appliance may become no longer available.Dish Rack

    ReplyDelete
  31. You have without a doubt seen that throughout the winter months, the incessant event of colds and influenza, especially with kids is across the board. Warmtepompen

    ReplyDelete
  32. A lot of refrigerators today provide with separate multi utility cabinets and sub divisions in the existing ones for more convenient storage.Best deep freezer for home 2020 India

    ReplyDelete
  33. Thank you very much for this useful article. I like it. Viking , Wolf, Dacor Stove & Range Repair Near Me

    ReplyDelete
  34. Regardless of whether you are intending to put your home available or make it increasingly agreeable to live in, there is a great deal to be picked up from making home improvements.lucht warmtepomp

    ReplyDelete
  35. How does a Geothermal Heat Pump get the heat starting from the earliest stage? lucht warmtepomp

    ReplyDelete
  36. The heat pump uses a circle of refrigerant sucked through a fume compacted refrigeration cycle moving heat either in or out. lucht warmtepomp

    ReplyDelete
  37. Wow, What a Excellent post. I really found this to much informatics. It is what i was searching for.I would like to suggest you that please keep sharing such type of info.Thanks Maytag, Miele, LG, Electrolux, GE, Bosch Washer Repair in SANTA MONICA

    ReplyDelete
  38. You have done a great job on this article. It’s very readable and highly intelligent. You have even managed to make it understandable and easy to read. You have some real writing talent. Thank you. Maytag, Miele, LG, Electrolux, GE, Bosch Washer Repair in SANTA MONICA

    ReplyDelete
  39. From the earliest model such as the icebox, to the ultra-modern side by side, refrigerators are a convenient appliance that no home can do without. Assistenza frigoriferi Liebherr

    ReplyDelete
  40. Thank you because you have been willing to share information with us. we will always appreciate all you have done here because I know you are very concerned with our. appliance repair milton

    ReplyDelete
  41. A heat siphon is an electric cooling and heating framework used to pack and decompress gas to heat or cool a house. Warmtepomp

    ReplyDelete
  42. I just couldn't leave your website before telling you that I truly enjoyed the top quality info you present to your visitors? Will be back again frequently to check up on new posts. Warmtepomp

    ReplyDelete
  43. Positive site, where did u come up with the information on this posting? I'm pleased I discovered it though, ill be checking back soon to find out what additional posts you include. Appliance Repair

    ReplyDelete
  44. The article was extraordinary and has all the data is very usful for us. Refrigerator repair

    ReplyDelete
  45. We have sell some products of different custom boxes.it is very useful and very low price please visits this site thanks and please share this post with your friends. floating coolers tips on choosing

    ReplyDelete
  46. Good job on this article! I really like how you presented your facts and how you made it interesting and easy to understand. Thank you. Fridge Repairs

    ReplyDelete
  47. Never be nervous and in no way display your anxiety. Tall order? Not in any respect.teddy bears

    ReplyDelete
  48. Thanks for the blog that was loaded full of information. Reading your blog has helped me to get what I was looking for Fridge maintenance.

    ReplyDelete
  49. thanks consequently a good deal as you've got been willing to pension guidance taking into account us. we are able to always appreciate every and every and each one in all one one allowance of allocation of you have completed here because you've got made my take impact as clean as ABC. subzero repair orange county

    ReplyDelete
  50. This might be easier since you can order with just a few clicks here and there buy you have to be cautious. side by side door refrigerators online

    ReplyDelete