Renewable Energy Based Hybrid System Research Articles

Modelling and Experimental Study on Renewable Energy Based Hybrid Systems

In this paper a Renewable Energy Sources (RES) based hybrid system was designed and implemented. It has to cover several electric loads each one corresponds to the annual demands of a typical house, a typical country house and a small company. Experimental process reveals the efficient satisfaction of the desirable electric demands. These scenarios were also simulated by using HOMER software to determine time step results (over 95% load coverage). Moreover, it was found that the served power cannot meet the primary load when simulations take place at HOMER environment. These results are in contradiction with experimental observations that indicate the nearly uninterruptable coverage of the selected annually loads. In order to fill the gap between the real life operation and the simulation process of a hybrid RES project, an Innovative Theoretical Model Simulation (ITMS) based on a mathematical strategy plan, which incorporates the battery bank’s State of Charge (SOC), has been developed to accurately predict an autonomous system operation, found in excellent agreement with the experimental results.

Modelling and Experimental Study on Renewable Energy Based Hybrid Systems

Modelling and Experimental Study on Renewable Energy Based Hybrid Systems

Thermodynamic analysis of a new renewable energy based hybrid system for hydrogen liquefaction

Abstract In this paper, a parametric study of the triple effect absorption cooling system (TEACS) integrated with solar photo-voltaic/thermal (PV/T), geothermal, and Linde–Hampson cycle is conducted. The effect of different operating parameters on the COPs, ratio ‘n’, amount of hydrogen gas pre-cooled, amount of hydrogen liquefied, and utilization factor of the integrated system are studied. It is found that when mass flow rate of air increases the energetic and exergetic COPs decrease in an exponential form from 2.6 to 1.9, and 0.4 to 0.3, respectively. The amounts of hydrogen gas pre-cooled and hydrogen liquefied decrease from 0.39 kg/s to 0.32 kg/s and 0.082 kg/s and 0.066 kg/s, respectively with increase in mass flow rate of air. Moreover, the amounts of hydrogen gas pre-cooled and hydrogen liquefied decrease from 0.42 to 0.27, and 0.088 to 0.066, respectively with increase in mass flow rate of geothermal. In addition, energetic and exergetic utilization factors of integrated system decrease from 0.059 to 0.037, and 0.21 and 0.13, respectively with increase in mass flow rate of geothermal.