Saturday, February 4, 2012

Thermodynamic analysis of the system

The thermodynamics of the breath compression aeon can be analyzed on a temperature against anarchy diagram as depicted in Figure 2. At point 1 in the diagram, the circulating refrigerant enters the compressor as a saturated vapor. From point 1 to point 2, the breath is isentropically aeroembolism (i.e., aeroembolism at connected entropy) and exits the compressor as a superheated vapor.

From point 2 to point 3, the superheated breath campaign through allotment of the condenser which removes the superheat by cooling the vapor. Between point 3 and point 4, the breath campaign through the butt of the condenser and is abridged into a saturated liquid. The abstract action occurs at about connected pressure.

Between credibility 4 and 5, the saturated aqueous refrigerant passes through the amplification valve and undergoes an brusque abatement of pressure. That action after-effects in the adiabatic beam dehydration and auto-refrigeration of a allocation of the aqueous (typically, beneath than bisected of the aqueous flashes). The adiabatic beam dehydration action is isenthalpic (i.e., occurs at connected enthalpy).

Between credibility 5 and 1, the algid and partially vaporized refrigerant campaign through the braid or tubes in the evaporator area it is absolutely vaporized by the balmy air (from the amplitude getting refrigerated) that a fan circulates beyond the braid or tubes in the evaporator. The evaporator operates at about connected pressure. The consistent saturated refrigerant breath allotment to the compressor basin at point 1 to complete the thermodynamic cycle.

It should be acclaimed that the aloft altercation is based on the ideal vapor-compression algidity aeon which does not yield into annual absolute apple items like frictional burden bead in the system, slight centralized irreversibility during the compression of the refrigerant vapor, or non-ideal gas behavior (if any).

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