Charge regulators of the batteries are one of the parts most critical in stand-alone photovoltaic systems. The economic cost of the complete installation, for a long period of time, depends on their correct operation. This document presents a Fuzzy Logic Controller for the charge regulation in stand-alone photovoltaic systems. The optimisation, in energy management, obtained with this controlle...

The paper estimates the impact of pursuing two scenarios new renewable electricity generating capacities installation in Ukraine. Under first scenario, 21% from energy sources is expected to be generated until 2030, which relatively reflects current trend capacities, while under second scenario this figure reach 30%. To assess employment effect, method factors was used. Jobs considered methodol...

The pumping station is an important part of the agricultural irrigation and drainage system. sump one common water inlet types stations. In sump, to facilitate installation maintenance equipment, some hydraulic structures, such as pump beams, platforms chest walls, are added sump. At present, impact structures in on performance device not clear, so this paper focused characteristics entropy gen...

The water treatment plant (WTP) employs a variety of electrical machines and utilities, making it an intensive energy consumption plant. In this study, audit was conducted on the Basbari WTP in Kathmandu, Nepal to identify hotspots that consume most recommend solutions for energy-efficient operation. A power quality analyzer used analyze patterns parameters data from electricity authority. stud...

Utilizing the gathered failure data and failure interval data from Tabas coal mine in two years, this paper discusses the reliability of powered supports. The data sets were investigated using statistical procedures and in two levels: the existence of trend and serial correlation. The results show that the powered supports follow the Gamma reliability function. The reliability of the machine de...

conclusions in japan, 8% lidocaine pump spray contains menthol and ethanol as additives. these additives, particularly menthol, might have led to excessive mucus production, although we did not analyze the mucus secretion. introduction pulmonary collapse after intubation is common, and it is caused by a variety of factors. case presentation a 21-year-old man presented at our operation room to u...

Excessive sedimentation derived from anthropogenic activities is a main factor in habitat and biodiversity loss in freshwater ecosystems. To prevent offsite movement of soil particles, many environmental regulatory agencies mandate the use of perimeter silt fences. However, research regarding the efficiency of these devices in applied settings is lacking, and fences are often ineffective due to...

in this paper, we focus on a continuously deteriorating critical equipment which its failure cannot be measured by cost criterion. for these types of systems like military systems, nuclear systems, etc it is extremely important to avoid failure during the actual operation of the system. in this paper we propose an approach which constrains failure probability to a pre-specified value. this valu...

An important part of the lifecycle costs for pump stations are the support costs associated with energy and preventive maintenance of the pumps. Both cost terms are interrelated because a trade-off exists between maintaining pumps frequently (with increased pump efficiency, reduced energy costs and increasing maintenance costs, and pump unavailability) and extending the intervals between the ov...