The Construction and Use of Exergy Diagrams

Daly, W.O.; Harness, J.B.

doi:10.1007/978-1-4613-9856-1_79

Cited by 2 publications

(2 citation statements)

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“…It may be recalled that Daly and Harness (1979) have described the generation of an exergy diagram for nitrogen based on the Bender equation of state. In the present paper, the formulation given by Jacobsen et al (1986) has been adopted as it uses a widely acccepted fundamental equation of state based on the non-dimensional Helmholtz free energy.…”

Section: Computer Programmentioning

confidence: 99%

“…There have been several studies involving exergy as a parameter in thermodynamic analyses (e.g. Thirumaleshwar, 1979;Daly and Harness, 1979;Rangrej and Narayankhedkar, 1983;Kotas, 1986). It has become apparent that cryogenic heat exchangers need to operate across very small temperature differences to reduce exergetic losses during heat transfer (Auracher,1980).…”

Section: Introductionmentioning

confidence: 99%

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Exergy diagrams for nitrogen on ITS-90

Rao

Srinivasan

1997

Int. J. Energy Res.

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The exergy-enthalpy and temperature-exergy diagrams have been generated in the range 0.1-10 MPa and from the triple point to 500 K. These diagrams on the International Temperature Scale (ITS-90) have been generated using a calculation scheme proposed by Jacobsen et al. A computer program is developed for calculating the thermodynamic properties of nitrogen, including exergy as a property, from the triple point to 800 K at pressures up to 30 MPa. These exergy based thermodynamic property charts can be useful in the energy efficiency analyses of cryorefrigeration cycles involving nitrogen as a working medium. A sample analysis is included.

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Section: Computer Programmentioning

confidence: 99%