Question
Download Solution PDFIn P-H diagram of vapour compression refrigeration cycle, the compression process is shown by a:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
The vapor-compression cycle is a process used to extract heat from a box or a room that underlies most refrigeration and air conditioning techniques. It consists of four separate stages:
- Compression(1-2) Isentropic Compression
- Condensation(2-3) Heat rejection at constant pressure
- Expansion(3-4) Constant enthalpy expansion
- Evaporation (4-1) Constant pressure heat addition
The T-s and P-h diagram is shown in the figure below.
Referring to the above diagram, the P-H diagram of the vapor compression refrigeration cycle, the compression process is shown by a straight line with a positive slope
Additional Information
The diagram given is the P-h diagram as it is similar to the P-h diagram drawn as per the process occurring from 1-2-3-4-1 in the cycle.
Refrigeration effect = R.E = mas flow rate × (enthalpy at evaporator exit – enthalpy at condenser exit)
Refrigeration effect = ṁ × (h1 - h4)
and \(COP =\frac{h_1-h_4}{h_2-h_1}\)
Last updated on Jul 15, 2025
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