A performance analysis is performed on the air-standard Diesel cycle using finite-time thermodynamics. The relations between net work and/or power, efficiency, and compression ratio, and the maximum net work and/or power and the corresponding efficiency bound are derived for the cycle with...

The optimization problem of a combined refrigeration cycle formed by two endoreversible Carnot refrigeration cycles in series without intermediate reservoirs has been studied using finite-time thermodynamics. The fundamental relation between cooling quantity and coefficient of performance (COP)...

The performance of an endoreversible regenerative Brayton heat engine has been studied. The analysis is focused on minimizing irreversibilities associated with the hot and cold heat exchangers and regenerator.

A total momentum filtered energy selective electron (ESE) heat pump model with heat leakage is established in this paper. The analytical expressions of heating load and coefficient of performance (COP) for both the total momentum filtered (kr-filtered) ESE heat pump and the conventionally...

The optimal configuration of the expansion process of a heated ideal gas inside a cylinder for maximum work output with a movable piston and time-dependent heat conductance is determined in this paper. The heat conductance of cylinder walls is not a constant, but depends on the time-dependent...

A generalized finite-time thermodynamic model of irreversible multi-element thermoelectric generator is established taking into account inner and external factors. The inner effects include Seebeck effect, Fourier effect, Joule effect and Thomson effect. The irreversibility is caused by the...

The efficiency bounds at maximum profit are obtained from finite-time exergoeconomic analysis for three common heat transfer laws: Newton's law (n = 1), a linear pheomenological law in irreversible thermodynamics (n = 1), and the radiative heat law (n = 4). The relation between optimal profit...

A multistage irreversible Carnot heat engine system operating between a finite thermal capacity high-temperature fluid reservoir and an infinite thermal capacity low-temperature environment with generalized convective heat transfer law [q∝(ΔT)m] and the irreversibility of heat resistance and...

The influence of physical dimension of thermocouples on the performance of a thermoelectric cooler (TEC) driven by a thermoelectric generator (TEG) is investigated. The physical dimension parameters include the length and the cross-sectional area of thermocouples. The multiobjective analyses...

The operation of a universal steady-flow endoreversible refrigeration cycle model consisting of a constant thermal-capacity heating branch, a constant thermal-capacity cooling branch and two adiabatic branches is viewed as a production process with exergy as its output. The finite-time...