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Understanding Vapour Compression Cycle
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In this lesson one will learn all the vital concepts under vapor compression cycle. He starts this lesson by explaining the four components of vapour compression cycle, which are, isentropic compression, constant pressure heat rejection, throttling and constant pressure heat absorption. Each of these components of vapour cycle is explained with the help of T-S and P-H diagrams. Also, derivations of important equations pertaining to it are elucidated.

Harshit Aggarwal
Cleared UPSC ESE twice with Rank 63 and 90 in mechanical engg. Got 99 percentile in GATE. Cracked ONGC, BHEL,ISRO, SAIL, GAIL successfully

U
Unacademy user
mam leasehold property par one time premium pay kiya jata hai???
sir the block diagram is wrong as being power consuming cycle arrows should be running in anticlockwise direction but u have shown them in clockwise direction
Sir why there is dotted line in throttling process in T-s and P-h diagrams.It could be like other processes.
Avinash, since throttling is a irreversible process and irreversible processes are represented by dotted lines ,hence it is shown by dotted lines in both T-S and P-h diagram
sir please upload lesson on psychrometry
DS
Sir, you said there is no heat and work transfer during throttling process..Then how the temp of refrigerent is reduced to by a significant value..Pls explain...
Harshit Aggarwal
3 years ago
The throttling process is in WET region. That is why enthalpy is constant but temperature is not constant. In wet region we can't consider it as an ideal gas.
DP
Darshan Pandit
3 years ago
Hi Dinesh, It is the expansion valve "where the magic happens". Harshit went into so much technical details that he missed out explaining the very basic physics. Why the Magic Happens? --> Refrigerants have the property of drastic temperature reduction when pressure drops. Hope it helps. Dear Harshit. Good efforts. Please do not take this comment negatively.
Sir, thanks for these lessons (this is quality) .very helpful
Harshit Aggarwal
3 years ago
thanks
Thanks a lot , ur videos are so best regarding mech
  1. Course : UNDERSTANDING THE BASICS OF REFRIGERATION HE BASICS OF REFR Lesson 2: VAPOUR COMPRESSION CYCLE Presented By: Harshit Aggarwal


  2. ABOUT ME . Graduated from NIT Nagpur in 2008 . Cleared Indian Engineering Services (IES-UPSC) Exam . Got the offer letter from most of the Maharatna and Navratna Companies . Cleared GATE Exanmm Course fee: CONTRIBUTE . Follow me on Unacademy at: https://unacademy.in/user/harshit_aggarwal


  3. VAPOUR COMPRESSION CYCLE CONDENSER THROTTLIN DEVICE EVAPORATOR | . 1-2: Isentropic Compression . 3-4: Throttling 2-3: Constant Pressure Heat Rejection 4-1: Constant Pressure Heat (Condensation) Absorptiorn (Evaporation)


  4. T-S AND P-H DIAGRAMS CRejechon 3 2. Win R.E. STORAG TANK STORAGE The main components of VC system are: . Compressor . Condenser Expansion Devic. /ThaomingW Expansion Device/Throttling Valve . Evaporator


  5. COP= RE We know thar h3-hy Wlork Inpud Work imput to hecompessor s h2-h f is +he mass flow te of the Temgerant in g/see then- Power input te the compressor =mxwr Similarly, reiparastien capacit similbry h2-h Similarly, heat jaded in Condenser, = kw