Skip to main content
Advanced Search

Filters: Tags: Performance (X)

27 results (8ms)   

View Results as: JSON ATOM CSV
Hydrates in nature have been known for a long time. In the last couple of decades the possibility of commercial utilization of natural hydrates has arisen as an alternative energy source. This paper asks 21 questions that, in the author’s opinion, need to be addressed and answered correctly before one can be confident one understands the scope of the problem one is facing in attempting to address the role of natural hydrates, both commercially and geologically.
Plastics have now become indispensable materials in the modern world and application in the industrial field is continually increasing. The properties of the oil derived from waste plastics were analyzed and found that it has properties similar to that of diesel. Waste plastic oil (WPO) was tested as a fuel in a D.I. diesel engine and its performance characteristics were analysed and compared with diesel fuel (DF) operation. It is observed that the engine could operate with 100% waste plastic oil and can be used as fuel in diesel engines. Oxides of nitrogen (NOx) was higher by about 25% and carbon monoxide (CO) increased by 5% for waste plastic oil operation compared to diesel fuel (DF) operation. Hydrocarbon was...
The effects of 120 days of high-intensity (80-kV/m) 60-Hz electric field exposure on hematologic constituents were investigated using a three-generation design including 135 field-exposed and 135 sham-exposed male Sprague-Dawley rats. Statistical tests performed included the multivariate analysis of variance, the univariate analysis of variance, and tests of simple effects. Total white cell count, lymphocyte count, and eosinophil count were significantly lower in field-exposed subjects; however, none of the red cell parameters differed significantly. The observed hematologic variations related to the exposure of a high-intensity electric field are consistent with those observed in animals responding to a mild stressor.
The effects of 120 days of high-intensity (80-kV/m) 60-Hz electric field exposure on hematologic constituents were investigated using a three-generation design including 135 field-exposed and 135 sham-exposed male Sprague-Dawley rats. Statistical tests performed included the multivariate analysis of variance, the univariate analysis of variance, and tests of simple effects. Total white cell count, lymphocyte count, and eosinophil count were significantly lower in field-exposed subjects; however, none of the red cell parameters differed significantly. The observed hematologic variations related to the exposure of a high-intensity electric field are consistent with those observed in animals responding to a mild stressor.
The uptake of nitrous oxide (N2O) occurs at the surface of the earth both in terrestrial and aquatic systems. This uptake is usually neglected in N2O budget studies. In this article, we discuss the likeliness of N2O uptake in different systems. These systems include soils as well as groundwater systems, riparian zones and surface waters. We address the possible consequences of ignoring surface sinks for N2O in global budgets as well as in national emission inventories. Our estimated surface sink is relatively small compared to the estimates of the present-day global emissions. Neglecting a possible surface sink of N2O may, therefore, not have major consequences for atmospheric budget studies on the global scale....
We have conducted a detailed analysis of costs associated with today’s technology for CO2 separation and capture at three types of power plants: integrated coal gasification combined cycles (IGCC), pulverized coal-fired simple cycles (PC), and natural gas-fired combined cycles (NGCC). The analysis was based on studies from the literature that analyzed the economics of capturing CO2 emitted at power plants. In this paper, we present a composite cost model and perform a sensitivity analysis to identify the cost-drivers for capture. We conclude that with new developments, CO2 capture and sequestration can become a cost-effective mitigation pathway.
The application of post-combustion capture (PCC) processes in coal fired power stations can result in large reductions of the CO2-emissions, but the consequential decrease in generation efficiency is an important draw-back The leading PCC technology is based on chemical absorption processes as this technology is the one whose scale-up status is closest to full-scale capture in power plants The energy performance of this process is analysed in this contribution. The analysis shows that the potential for improvement of the energy performance is quite large It is demonstrated that further development of the capture technology and the power plant technology can lead to generation efficiencies for power plants with 90%...