Thermodynamics of dielectric systems depending upon three variables

2014

AMR

Using the finite-time thermodynamics, based on the thermodynamics properties of ferroelectric materials and a linear heat-transfer law, the inherent regenerative losses in the cycle are calculated and the fundamental optimum relations and other relevant performance parameters are determined. The thermoeconomic optimization for ferroelectric Ericsson refrigeration-cycle is reported. The cooling load for the refrigerator per unit total cost is proposed as objective functions for the optimization. The optimum performance parameters which maximize the objective functions are investigated. Since the optimization technique consists of both investment and energy consumption costs, the obtained results are more general and realistic.

Section: Introductionmentioning

confidence: 99%

Thermoeconomic Optimization for a Ferroelectric Ericsson Refrigerator

2014

AMR

Section: Introductionmentioning

confidence: 99%

“…Thus, it is of significance to research the performance of the ferroelectric Ericsson refrigeration cycle. In the last decade, the theory of finite time thermodynamics has been successfully used to investigate the optimal performance of ferroelectric refrigeration cycles and many significant results have been obtained [6][7][8][9]. The ferroelectric refrigeration cycle using ferroelectric materials as a cyclic working substance will play an important role for refrigeration technology in near future.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Thermal Resistances and Nonperfect Regenerative Losses on the Performance of a Ferroelectric Ericsson Refrigerator

2014

AMR

Using the finite-time thermodynamics, the influence of thermal resistances and nonperfect regenerative losses on the optimal performance of a ferroelectric Ericsson refrigeration-cycle is analyzed. Based on the thermodynamics properties of ferroelectric materials and a linear heat-transfer law, the inherent regenerative losses in the cycle are calculated and the fundamental optimum relations and other relevant performance parameters are determined. The ecological optimization criterion of the refrigerator is derived. The results obtained here may reveal the general characteristics of the ferroelectric Ericsson refrigeration cycle.

“…The ferroelectric refrigerator, which has more advantages in refrigeration efficiency, reliability, low noise and environmental friendliness than a gas refrigerator, have attracted more and more attention due to their potential applications a technology to replace the conventional gas-compression/expansion technique [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Its coefficient of performance is equal to that of a reversible Carnot refrigeration-cycle. However, when the irreversibility of the heat transfer is considered, the performance of the Stirling refrigeration cycle is different from that of a Carnot refrigeration-cycle [6][7][8]. In recent years, the influence of irreversibilities on the performance of the ferroelectric Stirling refrigeration-cycle has been comparatively rarely studied.…”

Section: Introductionmentioning

confidence: 99%

Thermoeconomic Optimization for a Ferroelectric Stirling Refrigeration-Cycle

et al. 2014

AMM

Using the finite-time thermodynamics, an irreversible cycle model of the Stirling refrigeration-cycle, using a ferroelectric material as the working substance, is established. Several irreversibilities due to thermal resistances between the working substance and the heat reservoirs, regenerative losses in two regenerative processes are taken into account. The influence of these irreversible losses on the performance of the ferroelectric Stirling refrigeration-cycleis analyzed. The thermoeconomic optimization for ferroelectric Stirling refrigeration-cycle is reported. The cooling load for the refrigerator per unit total cost is proposed as objective functions for the optimization. The optimum performance parameters which maximize the objective functions are investigated. Since the optimization technique consists of both investment and energy consumption costs, the obtained results are more general and realistic.