Table 10 Daily results for thermos-economic and environmental performance criteria at best design values gained by parametric analysis.

From: The optimum sizing of zero-emission water-cooled VCR cycle based on exergo-economic-environmental assessment criteria by triple-objective MPSO

Criteria

Performance criteria

Optimum values after applying GA

The values with initial design parameters

Improvement percent (%)

VCR sub-system coefficient of performance

\({\text{COP}}_{{{\text{VRC}}{\mathrm{ dai;y}}}}\)

3.604

3.217

12.03

IST.AHU sub-system coefficient of performance

\({\text{COP}}_{{{\text{ST}}{\mathrm{ AHU}}{\mathrm{ daily}}}}\)

4.61

2.085

121

WPWVCRS system coefficient of performance

\({\text{COP}}_{{{\text{WPWVCRS}}{\mathrm{ daily}}}}\)

3.94

1.987

98.30

VCR sub-system exergy efficiency

\({\upeta }_{{{\text{ex}}{\mathrm{ VCR}}{\mathrm{ daily}}}} {\text{ (\%)}}\)

27.84

40.040

− 30.50

IST.AHU sub-system exergy efficiency

\({\upeta }_{{{\text{ex}}{\mathrm{ ST}}{\mathrm{ AHU}}{\mathrm{ daily}}}} {\text{ (\%)}}\)

29.37

18.430

59.40

WPWVCRS system exergy efficiency

\({\upeta }_{{{\text{ex}}{\mathrm{ WPWVCRS}}{\mathrm{ daily}}}} {\text{ (\%)}}\)

38.26

27.290

40.20

Non dimensional product sum unit cost

\({\text{PSUC}}_{{{\text{non}}{\mathrm{ Dim}}{\mathrm{ ave}}{\mathrm{ daily}}}}\)

2585.042

2869.583

9.92