A model of a two-stage semiconductor thermoelectric-generator with external heat-transfer is built. Performance of the generator, assuming Newton's heat-transfer law applies, is analyzed using a combination of finite-time thermodynamics and non-equilibrium thermodynamics. The analytical...

On the basis of an endoreversible absorption heat-transformer cycle, a generalized irreversible four-heat-reservoir heat-transformer cycle model has been established by taking account of the heat resistances, heat leaks and irreversibilities due to the internal dissipation of the working...

A preliminary design efficiency-optimization of an axial-flow compressor, using one-dimensional flow theory, is studied in this paper. A model for the optimum design of a compressor stage, assuming a fixed distribution of axial velocities, is presented. The absolute inlet and exit angles of the...

A new method and algorithm for functional reliability simulation for a steam-turbine's behaviour is proposed and a degeneration model is established based on the laws of the steam-turbine. By taking a power-station steam-turbine as an example, the turbine's functional reliability is simulated.

The operation of a Newton's law system generalized irreversible Carnot-engine with heat resistance, heat leakage and internal dissipation is viewed as a production process with exergy as its output. The finite-time exergoeconomic performance optimization of the engine is investigated by taking...

A model for the optimal design of a multi-stage compressor, assuming a fixed configuration of the flow-path, is presented. The absolute inlet and exit angles of the rotor, the absolute exit angle of the stator, and the relative gas densities at the inlet and exit stations of the stator, of every...

The finite-time thermodynamic performance of a generalized Carnot-cycle, under the condition of mixed heat-resistances, is studied. The optimal configuration and the fundamental optimal relation between power and efficiency of the cycle are derived. The results provide some guidance for the...

For an endoreversible four-heat-reservoir absorption heat-transformer cycle, for which a linear (Newtonian) heat-transfer law applies, an ecological optimization criterion is proposed for the best mode of operation of the cycle. This involves maximizing a function representing the compromise...

A performance analysis and optimization of a regenerated air refrigeration cycle with variable-temperature heat-reservoirs is carried out by taking the cooling-load density, i.e., the ratio of cooling load to the maximum specific volume in the cycle, as the optimization objective using...

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...