E. Akyuz

The techno-economic and environmental aspects of a hybrid PV-diesel-battery power system for remote farm houses

In this study, the solar radiation data of Balikesir in Turkey are analysed to assess the techno-economic viability and environmental performance of a hybrid Photovoltaic (PV)-diesel-battery system to meet the load requirements of a typical remote farm house. Several aspects of the system are studied through the Cost of Energy (CoE), the operational hours of diesel generator, unmet load, excess electricity generation, percentage of fuel savings, etc. The CoE for this kind of hybrid system is found to be 1.245 US

A case study of hybrid wind-solar power system for reduction of CO 2 emissions

/kWh. Simulations are performed for three cases (diesel only, PV-diesel and PV-diesel-battery). It is found that a diesel-only system produces 63 900 kWh of electricity and 69.7 tonnes of CO2, 13.0 kg of PM, 1.53 tonnes of NOx emissions per year. Using PV-diesel and PV-diesel-battery systems helps reduce the emissions for CO2 to 61.0 and 42.0 tonnes, for PM to 11.4 and 7.83 kg and for NOx to 1.34 and 0.92 tonnes, respectively. The diesel-only system is more economical if the fuel price remains below US

Energy Analysis of Hydrogen Production from a Hybrid Wind Turbine-Electrolyzer System

2/L. Otherwise, PV-diesel and PV-diesel-battery systems become more cost-effective. Also, the environmental impact improvement factor is found as 0.127 and 0.399 for CO2, 0.123 and 0.397 for PM and 0.124 and 0.398 for NOx for both PV-diesel and PV-diesel-battery systems, respectively.

Performance investigation of hydrogen production from a hybrid wind-PV system

In this study, the solar radiation and wind data pertaining to Bigadic region are analyzed to assess the performance of a hybrid Photovoltaic–Wind–Diesel– Battery energy system. The average energy consumption of the system is about 20.33 kWh per day and 600 kWh per month, with a peak power demand of 2.4 kW. A 10 kW Wind Turbine and a 1 kWp PV energy system with 48 kW battery are installed. The emissions and energy costs are calculated and compared with the diesel-only and hybrid system. A break-even analysis is conducted for the hybrid system, which turned out to equal 1.44 km.

A novel approach for estimation of photovoltaic exergy efficiency

In this study, the energy performance of hybrid wind-hydrogen system is investigated. In addition to energy performance, a cost analysis of hydrogen production is also carried out for stand-alone system for different PEM electrolyzer capacities. Monthly efficiency variations for wind turbine operation for the total system are calculated and maximum efficiency values obtained as 22 % and 11.9 %, respectively. Energy efficiency of the PEM electrolyzer is determined for different temperature and electric current values. The results show that increasing the working temperature from 35 °C to 75 °C increases the energy efficiency of PEM electrolyzer from 62 % to 70 % at 30 A current. Hydrogen cost is calculated by economic analysis of wind-electrolysis-hydrogen production systems using the present-value method. The lowest cost at 6 m/s wind speed is calculated as 23.6 US

Energy analysis of hydrogen production using biogas-based electricity

/kg. The size of electrolysis unit gains importance in regions with high annual average wind speed. In this regard, the optimum size is determined as 0.7 kW. The lowest cost at 6 m/s wind speed is calculated as 23.6 US

Hydrogen production probability distributions for a PV-electrolyser system

/kg. Furthermore, economics of wind-hydrogen system not only depends on the cost of wind turbine and electrolyzer but also on the configuration and resources.