The Experts below are selected from a list of 63 Experts worldwide ranked by ideXlab platform
Stanisław Witczak - One of the best experts on this subject based on the ideXlab platform.
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Experimental study of air–oil–water flow in a Balancing Valve
Journal of Petroleum Science and Engineering, 2015Co-Authors: Marcin Pietrzak, Stanisław WitczakAbstract:Abstract This paper reports the results of research into air–oil–water flow through Balancing Valves. The testing applied commercial Zetkama Valves. The tests were performed with the use of 4 Balancing Valves with the nominal diameters of 15, 25, 32 and 40 mm. The testing enabled the determination of the flow patterns forming in the vicinity of the Valve. It was concluded that the examined Valves do not significant result in flow pattern disturbances. In addition, a correlation was derived which can be used for determining the value of the local pressure drop for the examined type of Valves. The presented correlation could be potentially applied for determining pressure drop during gas–liquid mixture flow in industrial installations and apparatus.
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experimental study of air oil water flow in a Balancing Valve
Journal of Petroleum Science and Engineering, 2015Co-Authors: Marcin Pietrzak, Stanisław WitczakAbstract:Abstract This paper reports the results of research into air–oil–water flow through Balancing Valves. The testing applied commercial Zetkama Valves. The tests were performed with the use of 4 Balancing Valves with the nominal diameters of 15, 25, 32 and 40 mm. The testing enabled the determination of the flow patterns forming in the vicinity of the Valve. It was concluded that the examined Valves do not significant result in flow pattern disturbances. In addition, a correlation was derived which can be used for determining the value of the local pressure drop for the examined type of Valves. The presented correlation could be potentially applied for determining pressure drop during gas–liquid mixture flow in industrial installations and apparatus.
Marcin Pietrzak - One of the best experts on this subject based on the ideXlab platform.
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Experimental study of air–oil–water flow in a Balancing Valve
Journal of Petroleum Science and Engineering, 2015Co-Authors: Marcin Pietrzak, Stanisław WitczakAbstract:Abstract This paper reports the results of research into air–oil–water flow through Balancing Valves. The testing applied commercial Zetkama Valves. The tests were performed with the use of 4 Balancing Valves with the nominal diameters of 15, 25, 32 and 40 mm. The testing enabled the determination of the flow patterns forming in the vicinity of the Valve. It was concluded that the examined Valves do not significant result in flow pattern disturbances. In addition, a correlation was derived which can be used for determining the value of the local pressure drop for the examined type of Valves. The presented correlation could be potentially applied for determining pressure drop during gas–liquid mixture flow in industrial installations and apparatus.
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experimental study of air oil water flow in a Balancing Valve
Journal of Petroleum Science and Engineering, 2015Co-Authors: Marcin Pietrzak, Stanisław WitczakAbstract:Abstract This paper reports the results of research into air–oil–water flow through Balancing Valves. The testing applied commercial Zetkama Valves. The tests were performed with the use of 4 Balancing Valves with the nominal diameters of 15, 25, 32 and 40 mm. The testing enabled the determination of the flow patterns forming in the vicinity of the Valve. It was concluded that the examined Valves do not significant result in flow pattern disturbances. In addition, a correlation was derived which can be used for determining the value of the local pressure drop for the examined type of Valves. The presented correlation could be potentially applied for determining pressure drop during gas–liquid mixture flow in industrial installations and apparatus.
Shengwei Wang - One of the best experts on this subject based on the ideXlab platform.
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A fault-tolerant control method of Balancing Valves for condenser fouling in water-cooled chillers
Energy Procedia, 2017Co-Authors: Howard Cheung, Kui Shan, Shengwei WangAbstract:Abstract This paper proposes a fault tolerant control method for condenser fouling in water-cooled chillers. Condenser fouling is one of the common faults in water-cooled chillers that degrade its energy efficiency. Studies were conducted to develop fault detection and diagnostics (FDD) algorithms to address this issue. However, the current FDD techniques are too expensive for some faults that are not very significant such as condenser fouling, and a cheaper alternative may be needed to remove the fault impact. This study addresses this issue by proposing a control method without FDD algorithms to reduce the impact of condenser fouling in water-cooled chillers. It controls the opening of the Balancing Valve in the condensing water loop to adapt the chiller plant for the effectively smaller condenser. Verification of the control method is conducted by a model of a real chiller plant and comparison with the ordinary operation case is made under two different months and two fouling levels. The results show that the method can help the chiller plant to reduce the impact of condenser fouling by reducing its electricity consumption by 2.0% under normal situation and reducing the impact of fouling by 0.2 to 0.4%. However, the result is not very significant, and more studies with other control inputs are needed for more effective control methods.
Wang S - One of the best experts on this subject based on the ideXlab platform.
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A fault-tolerant control method of Balancing Valves for condenser fouling in water-cooled chillers
'Elsevier BV', 2017Co-Authors: Cheung H, Shan K, Wang SAbstract:9th International Conference on Applied Energy, ICAE 2017, Cardiff, United Kingdom21-24 Aug 2017This paper proposes a fault tolerant control method for condenser fouling in water-cooled chillers. Condenser fouling is one of the common faults in water-cooled chillers that degrade its energy efficiency. Studies were conducted to develop fault detection and diagnostics (FDD) algorithms to address this issue. However, the current FDD techniques are too expensive for some faults that are not very significant such as condenser fouling, and a cheaper alternative may be needed to remove the fault impact. This study addresses this issue by proposing a control method without FDD algorithms to reduce the impact of condenser fouling in water-cooled chillers. It controls the opening of the Balancing Valve in the condensing water loop to adapt the chiller plant for the effectively smaller condenser. Verification of the control method is conducted by a model of a real chiller plant and comparison with the ordinary operation case is made under two different months and two fouling levels. The results show that the method can help the chiller plant to reduce the impact of condenser fouling by reducing its electricity consumption by 2.0% under normal situation and reducing the impact of fouling by 0.2 to 0.4%. However, the result is not very significant, and more studies with other control inputs are needed for more effective control methods.Department of Building Services Engineering2017-2018 > Academic research: refereed > Refereed conference paper201808 bcr
Euan Lindsay - One of the best experts on this subject based on the ideXlab platform.
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Air Muscle Actuated Low Cost
2015Co-Authors: Humanoid Hand, Peter Scarfe, Euan LindsayAbstract:Abstract: The control of humanoid robot hands has historically been expensive due to the cost of precision actuators. This paper presents the design and implementation of a low-cost air muscle actuated humanoid hand developed at Curtin University of Technology. This hand offers 10 individually controllable degrees of freedom ranging from the elbow to the fingers, with overall control handled through a computer GUI. The hand is actuated through 20 McKibben-style air muscles, each supplied by a pneumatic pressure-Balancing Valve that allows for proportional control to be achieved with simple and inexpensive components. The hand was successfully able to perform a number of human-equivalent tasks, such as grasping and relocating objects
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Air Muscle Actuated Low Cost Humanoid Hand
International Journal of Advanced Robotic Systems, 2006Co-Authors: Peter Scarfe, Euan LindsayAbstract:The control of humanoid robot hands has historically been expensive due to the cost of precision actuators. This paper presents the design and implementation of a low-cost air muscle actuated humanoid hand developed at Curtin University of Technology. This hand offers 10 individually controllable degrees of freedom ranging from the elbow to the fingers, with overall control handled through a computer GUI. The hand is actuated through 20 McKibben-style air muscles, each supplied by a pneumatic pressure-Balancing Valve that allows for proportional control to be achieved with simple and inexpensive components. The hand was successfully able to perform a number of human-equivalent tasks, such as grasping and relocating objects.
