The Experts below are selected from a list of 252 Experts worldwide ranked by ideXlab platform
Nasa - One of the best experts on this subject based on the ideXlab platform.
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Phase 1 engineering and technical data report for the thermal control extravehicular life support system
2013Co-Authors: NasaAbstract:A shuttle EVLSS Thermal Control System (TCS) is defined. Thirteen heat rejection subsystems, thirteen water management subsystems, nine humidity control subsystems, three pressure control schemes and five temperature control schemes are evaluated. Sixteen integrated TCS systems are studied, and an optimum system is selected based on quantitative weighting of weight, volume, cost, complexity and other factors. The selected sybsystem contains a sublimator for heat rejection, a bubble Expansion Tank for water management, and a slurper and rotary separator for humidity control. Design of the selected subsystem prototype hardware is presented.
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Thermal control extravehicular life support system
2013Co-Authors: NasaAbstract:The results of a comprehensive study which defined an Extravehicular Life Support System Thermal Control System (TCS) are presented. The design of the prototype hardware and a detail summary of the prototype TCS fabrication and test effort are given. Several heat rejection subsystems, water management subsystems, humidity control subsystems, pressure control schemes and temperature control schemes were evaluated. Alternative integrated TCS systems were studied, and an optimum system was selected based on quantitative weighing of weight, volume, cost, complexity and other factors. The selected subsystem contains a sublimator for heat rejection, bubble Expansion Tank for water management, a slurper and rotary separator for humidity control, and a pump, a temperature control valve, a gas separator and a vehicle umbilical connector for water transport. The prototype hardware complied with program objectives.
Shan Jing - One of the best experts on this subject based on the ideXlab platform.
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Influence of Storage Tank's Deflection on Storage Tank Meter and the Calibration of Storage Tank Meter
Journal of Jiamusi University, 2011Co-Authors: Shan JingAbstract:In this article,influence of storage Tank's deflection on storage Tank meter was studied by setting up the general relation among Expansion Tank capacity,the oil level and the mode parameters(vertical inclination angle α=4.1°),and the gage table's provisioning that storage Tank is deflected at 1cm interval in oil level was figured out.
Mohammad Pourbafrani - One of the best experts on this subject based on the ideXlab platform.
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production of biofuels limonene and pectin from citrus wastes
Bioresource Technology, 2010Co-Authors: Mohammad Pourbafrani, Gergely Forgacs, Ilona Sarvari Horvath, Claes Niklasson, Mohammad J TaherzadehAbstract:Production of ethanol, biogas, pectin and limonene from citrus wastes (CWs) by an integrated process was investigated. CWs were hydrolyzed by dilute-acid process in a pilot plant reactor equipped with an explosive drainage. Hydrolysis variables including temperature and residence time were optimized by applying a central composite rotatable experimental design (CCRD). The best sugar yield (0.41 g/g of the total dry CWs) was obtained by dilute-acid hydrolysis at 150 degrees C and 6 min residence time. At this condition, high solubilization of pectin present in the CWs was obtained, and 77.6% of total pectin content of CWs could be recovered by solvent recovery. Degree of esterification and ash content of produced pectin were 63.7% and 4.23%, respectively. In addition, the limonene of the CWs was effectively removed through flashing of the hydrolyzates into an Expansion Tank. The sugars present in the hydrolyzates were converted to ethanol using baker's yeast, while an ethanol yield of 0.43 g/g of the fermentable sugars was obtained. Then, the stillage and the remaining solid materials of the hydrolyzed CWs were anaerobically digested to obtain biogas. In summary, one ton of CWs with 20% dry weight resulted in 39.641 ethanol, 45 m(3) methane, 8.91 limonene, and 38.8 kg pectin.
Mahesh Kumar Keshavan Raghavan - One of the best experts on this subject based on the ideXlab platform.
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condensate harvester with liquid level sensing and control for air compressor system including a refrigerated dryer
2016Co-Authors: Mahesh Kumar Keshavan RaghavanAbstract:An air compressor system useful for supplying a stream of compressed air for an end user is disclosed which includes a refrigerated dryer useful to remove moisture and harvest it from the compressed air. The refrigerated dryer includes an evaporator and a condenser, where the evaporator is useful to produce the moisture from the compressed air. The air compressor system includes an Expansion Tank which collects the harvested moisture from the evaporator. The Expansion Tank can include a low liquid level sensor and a high liquid level sensor useful to determine level of condensate in the Expansion Tank. The low liquid level sensor can produce a useful to permit ingress of water from a utility water supply into the Expansion Tank, and the high liquid level sensor can produce a signal useful to venting excess liquid from the Tank.
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condenser liquid delivery regulator for a refrigerated dryer having condensate harvester
2016Co-Authors: Mahesh Kumar Keshavan RaghavanAbstract:An air compressor system useful for supplying a stream of compressed air for an end user is disclosed which includes a refrigerated dryer useful to remove moisture and harvest it from the compressed air. The refrigerated dryer includes an evaporator and a condenser, where the evaporator is useful to produce the moisture from the compressed air. The air compressor system includes an Expansion Tank which collects the harvested moisture from the evaporator. The Expansion Tank can provide liquid to a pump that conveys the liquid to a condenser of the dryer. The refrigerated dryer includes a temperature sensor that detects a temperature of refrigerated fluid associated with the condenser and regulates the pump to supply liquid to the condenser to assist in heat rejection.
John Tanner - One of the best experts on this subject based on the ideXlab platform.
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High Temperature Hot Water Generator Safety Valve Research at Wright-Patterson AFB, OH. Investigation of Chronic Safety Valves Leaks,
1999Co-Authors: Michael K. Brewer, Charles Schmidt, John TannerAbstract:Abstract : Wright-Patterson AFB (WPAFB) tasked the U.S. Army Construction Engineering Research Laboratory (CERL) to investigate the best way to resolve the problem of incorrect safety valves installed on fired pressure vessels in high temperature hot water (HTHW) generators. Additionally, WPAFB requested help in controlling system pressure in the HTHW system during large load swings, and guidance on how to pipe Expansion Tank discharge to a blowoff Tank. CERL researchers visited the site, inspected the system, researched relevant specifications, and recommended that: (1) the screen interface for the computerized plant data recording system at Plant 1240 be modified to trend plant pressure and N2 Expansion Tank level to help troubleshoot pressure control problems, (2) two "V" safety valves be installed on each HTHW unit, and (3) the blowoff valve, piping, and Tank configuration be modified to eliminate water hammer.
