Yunus Emre Yuksel

Thermodynamic Assessment of an Integrated Solar Collector System for Multigeneration Purposes

This chapter performs a thermodynamic analysis of an integrated system with a concentrating collector for power, heating, cooling, hydrogen, and domestic hot water production. The renewable energy-based integrated system consists of five subssystems; (1) a concentrating collector, (2) energy storage, (3) Rankine cycle, (4) double-effect absorption cooling system, and (5) hydrogen production and liquefaction process. The integrated system for multigeneration purposes is examined in two operating modes: (1) solar and (2) storage system. A thermodynamic analysis based on the energy and exergy efficiency and the exergy destruction rate for the whole system and its components is presented for two operating modes. The overall energy and exergy efficiencies of the integrated system were calculated as 51.32% and 46.75%, respectively, for the solar mode, whereas these efficiencies were 47.44% and 45.43%, respectively, for the storage system mode.

Thermodynamic Modeling of an Integrated Energy System for Poly-generation Design

Integrated energy production systems based on the renewable or fossil energy sources for poly-generation applications are inevitable in the near future for both environmental and sustainability concerns. Increasing the overall efficiency by combining system decreases the energy consumption and increases the system outputs such as electricity, heat, hot water, cooling, hydrogen, oxygen, and ext. Considering the global energy demands, the increase of efficiency of poly-generation systems will decrease emissions and therefore helps to protect the environment. Moreover, not only decreasing the emissions but also reducing the energy consumption is very important to achieve more sustainable systems, and it is again possible with integrated systems. In this chapter, thermodynamic assessment formulations and energy and exergy efficiency of a new poly-generation design which consists of biomass gasification, solid oxide fuel cell (SOFC), organic Rankine cycle (ORC), and double-effect absorption cooling and heating systems are given and analyzed in detail through energy, exergy, and sustainability approaches.

Thermodynamic Evaluation of an Integrated System with Concentrating Collector

In this paper, thermodynamic analysis of an integrated system with parabolic collector which produces a number of outputs, such as heating, cooling, hot water, and electricity, is investigated. This integrated system consists of four main subsystems: concentrating collector, energy storage, Rankine cycle, and double-effect absorption cooling and heating. The renewable energy-based system is operated in two modes, which are solar mode and storage mode. Exergy destruction ratios and rates, power or heat transfer rates, and energy and exergy efficiencies of the system components and whole system are carried out. From the results, energy and exergy efficiencies for solar mode are found as 51.32 and 46.75 %, whereas for storage mode these efficiencies are calculated as 47.44 % and 45.43 %, respectively. Additionally, parametric studies, including the thermodynamic performance of the system and its components, are conducted by the change in some design parameters, as variation of the ambient temperature changes from 0 to 30 °C.