1 Answers
Option 2 : Specific enthalpy of the refrigerant remains constant during the throttling process.
Explanation:
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.
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Statement 1:
From the above diagram enthalpy process (3-4) in pressure-enthalpy chart is a vertical line.
Statement 2:
From the above diagram enthalpy process (3-4) in pressure-enthalpy chart is vertical line i.e. specific enthlapy is constant.
Statement 3 and 4:
From the above diagram enthalpy process (3-4) in pressure-enthalpy chart is vertical line i.e. it remains constant.