نتایج جستجو برای: reciprocating pump
تعداد نتایج: 65362 فیلتر نتایج به سال:
Characterization and Preliminary Demonstration of Microcantilever Array Integrated Sensors Ryan R. Anderson Department of Electrical and Computer Engineering, BYU Doctor of Philosophy I characterize the behavior of microcantilever arrays which utilize the in-plane photonic transduction that I’ve previously developed and evaluate the performance of the microcantilever arrays in simple sensing sc...
The environmental performance of a combined cooling, heating, and power system is analyzed in this study at component-level using SPECO-based exergoenvironmental analysis. engine consumes natural gas produces 168.6 kW net power. waste heat recovered by LiBr-H2O absorption chiller exchanger, which are used for cooling heating purposes. energy assisted solar field. An Life Cycle Assessment quanti...
A major part of the power consumption in the low-wattage reciprocating compressors, used for household refrigeration units, is associated with the motor. A variable speed compressor as opposed to a single speed compressor is known to provide energy savings due to its ability to match the load demand from the pump more closely to the power delivered by the pump. The current article presents an o...
CFCs, HCFCs are stipulated to phase out, and other alternative refrigerants like R134a, are also constrained as a result from their high GWP values. CO2 as a natural working fluid now is used in reciprocating compressors due to its uniquely beneficial properties (ozone depletion potential, ODP=0; global warming potential, GWP =1). However, one remarkable characteristics of the CO2 reciprocating...
Atherosclerosis occurs preferentially at vascular curvature and branch sites where the vessel walls are exposed to fluctuating shear stress and have high endothelial permeability. Endothelial permeability is modulated by intercellular adhesion molecules such as VE-cadherin. This study was designed to elucidate the effects of different flow patterns on the localization and expression of VE-cadhe...
Recurrent tachyeardia in a 10-year-old child with acute rheumatic carditis was interpreted as being produced by a reciprocating (circus) mechanism involving either the normal atrioventricular pathway or the anomalous pathway of the Wolff-ParkinsonWhite syndrome. The tachycardia could be stopped by appropriately timed, electrically induced, atrial premature systoles, which apparently interrupted...
In the paper the weak points of today's reciprocating compressors arc described. Referring to latest internal combustion engine technologies and improvements, some possible application on reciprocating compressors will be described and discussed as: • Application of advanced Electromechanical Valves (EMV) with fully variable valve actuation in order to increase compressor speed ("downsizing") a...
In recent gas-phase nonlinear optics experiments it has been necessaq to prepare gas mixtures with very homogenous composition and temperature inside the measurement cell.’ The gas cell contains a relatively massive electrode structure,’ which is in poor thermal contact with the cell walls, and which leaves no room for an effective stirring device. To effectively mix the gas in the cell we have...
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