The performance of an irreversible closed intercooled regenerator Brayton-cycle coupled to constant-temperature heat reservoirs is analyzed by using the theory of finite-time thermodynamics (FTT). Analytical formulae for dimensionless power and efficiency are derived. Especially, the...

In this paper, in the viewpoint of finite-time thermodynamics and entropy-generation minimization are employed. The analytical formulae relating the power and pressure-ratio are derived assuming heat-resistance losses in the four heat-exchangers (hot- and cold-side heat exchangers, the...

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 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.

The optimal exergy-based ecological performance of a Newton's law generalized irreversible Carnot heat-pump, with losses due to heat-resistance, heat leak and internal irreversibility, is derived by taking into account an ecological optimization criterion as the objective function. This consists...

The performance of the Carnot cycle and a vapor-compression refrigeration cycle can be optimized by the choice of a heat-exchanger area between the evaporator and the condenser. In this paper, the analytical expressions for the optimal allocation of heat-exchanger area for the endoreversible and...

The thermoeconomics of endoreversible heat engines has been studied based on the linear phenomenological heat-transfer law [i.e., the heat flux Q [is proportional to] [Delta](1/T), where T is the absolute temperature]. Analytical formulae for profit, the maximum profit and the...

The finite-time thermodynamic performance of an air-standard dual cycle, with heat transfer and friction-like term losses, is analyzed and optimized in this paper. The relations between the power output and the compression ratio, and between the thermal efficiency and the compression ratio of...

The performance of a generalized irreversible reciprocating heat-engine cycle model consisting of two heating branches, two cooling branches and two adiabatic branches with heat-transfer loss and friction-like term loss was analyzed using finite-time thermodynamics. The relations between the...

On the basis of an endoreversible absorption heat-pump cycle, a generalized irreversible four-heat-reservoir absorption heat-pump cycle model is established by taking account of the heat resistances, heat leak and irreversibilities due to the internal dissipation of the working substance. The...