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Solar Powered Street Lights is a project that can be served to School of Electrical & Electronic Engineering (SEEE), Universiti Sains Malaysia in electricity cost savings by implementing the existing solar Photovoltaic (PV) system used for a green technology of energy efficiency. Due to the electricity of the national grid Tenaga Nasional Berhad (TNB) continue to increases, perhaps this system is able to maximize cost savings for SEEE. Solar energy collected during the day will be converted into electricity to charge the battery. Electricity charged the battery then will be connected and used to power the lights around the SEEE parking area at night. After taking all important aspects into accounts that help to optimize energy saving, this system has been proven to reduce electricity costs. System data such as the power consumption of the load, battery charging rates, and other relevant data is measured. From the measured data, calculations and analysis were performed to determine the actual performance of the system. Proper wiring connections between solar PV systems and light poles grid around the SEEE parking lot have been executed. As a result, the implementation of this system could save as much as RM 462.86 for the cost of monthly electricity bills incurred by the SEEE. [ABSTRACT FROM AUTHOR]

In-depth knowledge and understanding pertaining to the characteristics and short-term variations of solar radiation are essential, to promote the efficient utilization of solar energy. In particular, these findings are beneficial to tropical locations that are geographically positioned at the center of the “solar belt”, due to the abundant and persistent solar radiation encountered throughout the year, albeit limited by the scarcity of relevant research efforts till date. In this paper, we analyze the probability density distribution of the clearness index for short-term variations of solar radiation at the surface, conditioned to the relative optical air mass by employing the one-minute global solar irradiance measured over a one-year period in the tropical location of Sepang, Malaysia. We show that the temporal variability of solar irradiance for the location under study exhibits bimodal behavior, and reveal that the observed characteristics of the density distribution disappear with increasing relative optical air mass. Next, we model the probability density distributions of the one-minute clearness index as a mixture of two normal functions. The parameters taken into account in the proposed model show strong dependency on the relative optical air mass. [ABSTRACT FROM PUBLISHER]

The article lists the delegates of the 97th Session of the International Labour Conference from various countries including Afghanistan, Algeria and Angola.

The article lists the names of the countries, organizations, and delegations of the member States represented at the International Labour Conference in Geneva.