Ali H.A. Al-Waeli

Techno-economical assessment of grid connected PV/T using nanoparticles and water as base-fluid systems in Malaysia

ABSTRACT In this study, the techno-economic assessment of GCPVT with nanofluid has been investigated based on theoretical and experimental work in Malaysia. The productivity and utilisation of the PV have been investigated using yield and capacity factors (CFs), respectively. Also, the cost of energy and payback period has been calculated. The system installed, tested, and data have been collected. Evaluation of the system in terms of current, voltage, power and efficiency are presented. The average daily ambient temperature and total global solar energy in Kuala Lumpur are 38.89°C and 4062u2005Wh/m2, respectively. MATLAB software is used to analyse the measured data. The assessment results show that the GCPVT system has annual yield factor, CF, the cost of energy; payback period, and efficiency are (128.34–183.75)u2005kWh/kWp, (17.82–25.52)%, 0.196u2005USD/kWh, 7–8 years and 9.1%, respectively. This study indicates that the GCPVT system with nanofluid improved the PV technical and economic performance. GRAPHICAL ABSTRACT

Technoeconomical Assessment of Optimum Design for Photovoltaic Water Pumping System for Rural Area in Oman

Photovoltaic (PV) systems have been used globally for a long time to supply electricity for water pumping system for irrigation. System cost drops down with time since PV technology, efficiency, and design methodology have been improved and cost of wattage drops dramatically in the last decade. In the present paper optimum PV system design for water pumping system has been proposed for Oman. Intuitive and numerical methods were used to design the system. HOMER software as a numerical method was used to design the system to come up with optimum design for Oman. Also, REPS.OM software has been used to find the optimum design based on hourly meteorological data. The daily solar energy in Sohar was found to be 6.182u2009kWh/m2·day. However, it is found that the system annual yield factor is 2024.66u2009kWh/kWp. Furthermore, the capacity factor was found to be 23.05%, which is promising. The cost of energy and system capital cost has been compared with that of diesel generator and systems in literature. The comparison shows that the cost of energy is 0.180, 0.309, and 0.790u2009USD/kWh for PV-REPS.OM, PV-HOMER, and diesel systems, respectively, which sound that PV water pumping systems are promising in Oman.

Thermodynamic analysis of new concepts for enhancing cooling of PV panels for grid-connected PV systems

The temperature rise in photovoltaic cells causing drop in their open-circuit voltage is a serious issue to be dealt with. A wide range of cooling techniques have been proposed by researchers due to its positive results on electrical efficiency during operation. One of the prominent techniques in the field is using a hybrid photovoltaic thermal (PV/T) design which in turns utilizes a working fluid to extract the heat from the collector. Various PV/T designs have been proposed, most prominently nanofluid and nanofluid with nano-PCM-based PV/T. This paper aims to evaluate the two techniques of cooling a grid-connected PV system and examines the systems electrical and combined efficiency, in addition to performing exergy analysis. The two systems are experimentally tested for outdoors conditions in Bangi, Malaysia. The results show the two systems achieving highest electrical exergies of 73 and 74.52 for nanofluid and nanofluid with nano-PCM, respectively. Both systems achieved higher exergies than water-cooled and conventional GCPV.

Design of hybrid Photovoltaic-Diesel system for Al-Sadder City in Baghdad-Iraq

The country of Iraq has been struggling for the past couple of decades with electricity problems like inability to supply the demand which leads to continuous power outages. This problem could be dangerous on many levels and especially in critical applications where uninterruptable power supply is necessary like hospitals and military bases. The only solution presented is the use of electrical generators. Even though electrical generators are a reliable sources of energy, they seem to have many disadvantages like their reliability on fossil fuel (diesel in particular) and the Green House Gas (GHG) emissions which causes many health issues especially in populated areas where there are to designated areas to place these electrical generators. This health and safety hazard that costs a lot of money and gives little amount of electricity is not a cost-effective solution on the long term; where more maintenance and replacement is required. This paper presents a cost-effective solution by using a hybrid photovoltaic-diesel generator system, which can be used by the civilians and the government to lower the electricity demand and reduce GHG emissions. A hybrid system is proposed for Al-Sadder city to meet the electrical demands with initial costs, net present costs and energy costs are 39 M

Photovoltaic/Thermal (PV/T) systems: Status and future prospects

, 1.11 M

An experimental investigation of SiC nanofluid as a base-fluid for a photovoltaic thermal PV/T system

and 0.526

Comparative study to use nano-(Al2O3, CuO, and SiC) with water to enhance photovoltaic thermal PV/T collectors

/kWh, respectively. These costs show great promise in this research area and perhaps more developed microsystems in the future could be the real solution to Iraqs electricity problems.