Exergy or the available work energy function is a useful concept for analysing a Gifford-McMahon cycle. By definition, exergy of a state 1 is the maximum work that would be obtained in bringing the state to the dead state or ambient state for a heat engine. For a refrigerator, exergy is the minimum
Gifford-McMahon cycle — a theoretical analysis
✍ Scribed by M. Thirumaleshwar; S.V. Subramanyam
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 915 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0011-2275
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✦ Synopsis
A theoretical analysis of the Gifford-McMahon cycle is presented. Expressions for the ideal refrigeration produced and the figure of merit are developed. Various losses occurring in a real machine are considered and equations to account for these losses are derived. Results are presented in graphical form.
📜 SIMILAR VOLUMES
A non-linear model describing the dynamics, fluid dynamics and thermodynamics of a dynamically balanced Gifford-McMahon (G-M) cryorefrigerator has been developed. The cryorefrigerator consists of two horizontally opposed first-and second-stage displacers, a first-and a second-stage thermal regenerat
A heat balance analysis of single stage Gifford-McMahon cycle cryorefrigerator is presented. Ideal refrigeration, actual refrigeration, net refrigeration and the various losses are tabulated. It is observed that pressure-volume losses account for a major fraction of the total losses.
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A parametric analysis was carried out in order to examine the effect on the cooling capacities of the two stages of a commercial pneumatically driven cryorefrigerator, caused by a variation of several design parameters of the cryorefrigerator. The analysis was performed by using a previously develop