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This paper shows investigate and analyzed of theoretical and experimental performance of photovoltaic (PV) module under harsh weather conditions of Iraq. The investigation was performed in Baghdad because the weather climate change recently was noticeable and the shortage of electricity supplied from the national grid. The theoretical analysis addressed the parameters, analysis, and characteristics of the PV module were performed by MATLAB emulation software. Open-circuit voltage (Voc), short circuit current (Isc), output power (Poutput) characteristics, and PV module efficiency have been verified from the simulation model of the PV module. These characteristics have been experimentally investigated in order to validate the emulation outcomes. There are a good conformity between emulation and experimental results at different solar radiation and cell temperature weather conditions. [ABSTRACT FROM AUTHOR]

The mechanical effects in the boiler of steam power plants are a very complex problem and dangerous because of unstable pressure in the upper drum boiler. This work deals with an experimental investigation of the drum water level system in (Al-Quds power plant) in Baghdad / Iraq to explain the dynamic behavior of the system under a given operating condition. Mathematical equations of the boiler model are solved. The rapid elevation in the heat input (mass flow rate of fuel) has a dynamic effect on the riser tubes properties in the natural water circulation tube in a steam power plant's boiler. These are typically calculated under increasing heat input by ratio 10% and 20% for upper drum parameters. The outcomes represented that the rapid rise in the fuel flow rate leads to increase rates of evaporation and consequently caused a high elevation in the quality and this causes tube overheating. The temperature of the riser rising above the saturation temperatures slightly because of the steam temperature altitude and the dynamic influence resulting from a sharp rise in the thermal flux. [ABSTRACT FROM AUTHOR]