εe is the energy (thermal or electrical) generation efficiency.
With a CHP the thermal modulation range is not as large and part-load conditions lead to a loss of electrical generation efficiency.
It is predicted that the Linear Joule Engine Generator of the new design produces 1.8kWe with thermal efficiency of 34% and electrical generation efficiency of 30%.
The difference is due to the boiler pressure used in each energy generation scheme, which impacts the electrical generation efficiency.
In order to achieve a high electrical generation efficiency in the BTE system, this boiler will operate at a pressure of 85 bar [ 42].
Moreover, LNG cold energy was used as heat sink to improve the electrical power generation efficiency of the process.
On the other hand, optimization procedure II displays a steady decrease in both electrical efficiency and electrical generation through time which indicates the adverse effect of degradation on these two performance indices.
Due to the additional electrical generation attributed to thermoelectric generator, the developed PV-TE hybrid system achieves a high peak efficiency of 23% in the outdoor test which is 25% more than that of PV (photovoltaic) cells.
Energy facilities based on this technology will consist of up to four AREVA HTR modules achieving high thermodynamic efficiency with a total possible electrical generation capability of 1200 MWe.
Dye-sensitized solar cell (DSSC), the third generation photovoltaic technology is most promising alternative photovoltaic technology due to low-cost, stable electrical generation, good temperature stability, non-toxic emission during manufacturing, rapid efficiency enhancement and wider flexibility in design.
For electrical generation, for instance, exergy methods can be used to design better stations, improve efficiency, and avoid performance deterioration, while for cogeneration exergy methods can help improve efficiency and resolve economic costing and pricing issues.
