In this study, a frequency converter was used to carry out variable frequency control to the compressor with constant frequency of a small 3RT central air-conditioning air-cooled chiller, but the indoor blower and cooled water pump were still kept by constant frequency operation. It is to explore the energy-saving effect of chiller compressor and the cooling fan after being carried out the vari...

In this paper, we investigate implications of running a cooling system two silicagel/water adsorption chillers powered by district heating network. The devices are connected in series, i.e., the water output from primary chiller is directed to secondary one. consequence, device must deal with an even lower driving temperature and fluctuations caused device. We have evaluated three factors that ...

this study recommends a gis-based (geographic information systems) and multi-criteria evaluation for site selection of gas power plant in natanz city of iran. the multi-criteria decision framework integrates legal requirements and physical constraints related to environmental and economic concerns. it also builds a hierarchy model for gas power plant suitability. the methodologies used for site...

this article deals with the issues associated with developing a new design methodology for the nonlinear model-predictive control (mpc) of a chemical plant. a combination of multiple neural networks is selected and used to model a nonlinear multi-input multi-output (mimo) process with time delays.  an optimization procedure for a neural mpc algorithm based on this model is then developed. the p...

In a large-scale Swiss poultry abattoir, a microbiological process analysis of broiler carcasses was performed. At each selected process stage (scalding, plucking, evisceration, washing, and chilling), 90 carcasses from 30 flocks were sampled and examined for Campylobacter, Salmonella, Escherichia coli, Enterobacteriaceae, and extended-spectrum b-lactamases-producing Enterobacteriaceae. With re...

Plant shutdowns shape industry productivity, the dynamics of employment, and industrial restructuring. Plant closures account for more than half of gross job destruction in US manufacturing. This paper examines the effects of firm structure on US manufacturing plant closures. Plants belonging to multi-plant firms and those owned by US multinationals are less likely to exit. However, the superio...

AIM OF THE STUDY To evaluate a novel esophageal heat transfer device for use in inducing, maintaining, and reversing hypothermia. We hypothesized that this device could successfully induce, maintain (within a 1 °C range of goal temperature), and reverse, mild therapeutic hypothermia in a large animal model over a 30-h treatment protocol. METHODS Five female Yorkshire swine, weighing a mean of...