By-pass valve control to improve energy efficiency of pneumatic drive system

Yang, Aaimin; Pu, Junsheng; Wong, Chi Biu; Moore, Philip

doi:10.1016/j.conengprac.2008.10.013

Cited by 51 publications

(44 citation statements)

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“…Luo, Xia, & Sun (2013) promised that bypass adjustment could improve operational efficiency and reduce heat exchanger network costs; W. Wang, X. Wang, & Liu (2011) used the bypass system for intermediate pressure start-up of a turbine unit; Yang, Pu, Wong, & Moore (2009) applied by-pass valve to reduce the overshoot and allow some exhaust compressed air to be reused in the pneumatic drive, they showed that a 12-28% saving in energy use could be acquired and meanwhile the position accuracy is maintained, compared with the traditional control of the motion of the asymmetric cylinder; research by Yoon, J. Lee, S. Lee, Tak, M. Kim, K. Kim, & Park (2013) supported that the bypass flow distribution was reduced throughout the entire core regions in block type very high temperature reactor (VHTR), and the bypass flow ratios at the inlet and the outlet were reduced by 36.19% and 14.66%, respectively; Ren & He (2009) designed a continuous circulating valve, in which a bypass was applied, to reduce oil drilling pipe accidents such as sticking and so on.…”

Section: Introductionmentioning

confidence: 99%

Adding a Bypass to Ensure the Chemical Plant Production

Wang¹,

Peng²,

Wang³

2016

IJC

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The chilling output of the chiller fluctuated according to the chilling load. When it dropped down below a certain value, the temperature of the supply chilled water flowing out of the chiller would drop down too much. And this would result the chiller being shut down abnormally, because of its low temperature protection. Any this shutdown of the chiller endangered the production continuity and security, and caused a certain economic losses. A bypass, which was from the outlet of the chiller's condenser to the chilled water filter inlet, was added to the chilling system. Through this bypass, some cooling water was introduced from the cooling water circulation into the chilled water circulation. Then the temperature of the supply chilled water flowing out of the chiller was promoted. With experiments, and by the aid of thermodynamics analysis, the amount of introduced cooling water, which could be introduced to promote the supply chilled water temperature for maintaining the chiller running normally, was researched. Ultimately, a certain amount of introduced cooling water, at which the chiller would no longer stop abnormally at any chilling load, was determined. And the energy lose caused by the introduced cooling water was less than 5 percent the rated output of the chiller. Compared with the chiller rated output, this energy lose was so small that it could be neglected.

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Section: Introductionmentioning

confidence: 99%

Adding a Bypass to Ensure the Chemical Plant Production

Wang¹,

Peng²,

Wang³

2016

IJC

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“…In [11], a robotic system based on a parallel mechanism with redundant actuation is evaluated, showing possibilities to reduce electric power loss, peak torque of actuating joints and friction loss. [4] 2001 Conference paper Robot type --3-DoFs parallel manipulator and serial manipulator [5] 2014 Conference paper Robot type --Underactuated serial kinematics [11] 2015 Journal paper Robot type --Parallel manipulator with redundant actuation [19] 2015 Conference paper Robot type --Parallel manipulator with redundant actuation (3RRR) [15] 2010 Review Replacement Electric actuator -Generic mechatronic system [17] 2009 Journal paper Replacement Pneumatic -Generic pneumatic system [7] 2002 Conference paper Replacement Reduction of components weight Lighter arms Redundant serial robot (7 DoFs) [18] 2016 Conference paper Replacement Reduction of components weight Lighter arms Serial robot (5 DoFs) [1] 2007 Journal paper Replacement Reduction of components weight Lighter joints Redundant serial robot (7 DoFs) [6] 2008 Journal paper Replacement Reduction of components weight Lighter joints Redundant serial robot (7 DoFs) [2] 2016 Conference paper Replacement Moving the actuators at the base -Serial robot (3 DoFs) [10] 2015 Conference paper Replacement Moving the actuators at the base -Elbow joint (1 DoF) wrist joint (3 DoFs) [12] 1993 Journal paper Replacement Moving the actuators at the base -Redundant serial robot (7 DoFs) [16] 2012 Journal paper Replacement Moving the actuators at the base -Underactuated serial kinematics [20] 2015 Conference paper Addition Energy-storing devices Flywheel Serial robot (6 DoFs)-ABB IRB 140 [21] 2011 Conference paper Addition Energy-storing devices Flywheel Serial robot (3 DoFs)-crane [22] 2012 Conference paper Addition Energy-storing devices Hydraulic Generic hydraulic system [23] 2014 Journal paper Addition Energy-storing devices Hydraulic Generic hydraulic system [24] 2011 Conference paper Addition Energy-storing devices Pneumatic Hybrid pneumatic/electric system [25] 2016 Conference paper Addition Energy-storing devices Pneumatic Generic pneumatic system [26] 2013 Conference paper Addition Energy-storing devices Several Generic mechatronic system [27] 2011 Conference paper Addition Energy-storing devices Supercapacitor Mechatronic system (1 DoF)-elevator [28] 1997 Conference pap...…”

Section: Robot Typementioning

confidence: 99%

A Review on Energy-Saving Optimization Methods for Robotic and Automatic Systems

2017

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Abstract:In the last decades, increasing energy prices and growing environmental awareness have driven engineers and scientists to find new solutions for reducing energy consumption in manufacturing. Although many processes of a high energy consumption (e.g., chemical, heating, etc.) are considered to have reached high levels of efficiency, this is not the case for many other industrial manufacturing activities. Indeed, this is the case for robotic and automatic systems, for which, in the past, the minimization of energy demand was not considered a design objective. The proper design and operation of industrial robots and automation systems represent a great opportunity for reducing energy consumption in the industry, for example, by the substitution with more efficient systems and the energy optimization of operation. This review paper classifies and analyses several methodologies and technologies that have been developed with the aim of providing a reference of existing methods, techniques and technologies for enhancing the energy performance of industrial robotic and mechatronic systems. Hardware and software methods, including several subcategories, are considered and compared, and emerging ideas and possible future perspectives are discussed.

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“…These gases are stored in another gas tank after being pressurized by the pressure increasing valve [12]. Aimin Yang et al [13] improved the traditional servo pneumatic system. They used a two-position two-way electromagnetic valve to connect the two cavities of the cylinder.…”

Section: Introductionmentioning

confidence: 99%

“…The precise positioning of the system is achieved on the basis of energy conservation through combining the control strategies of the sliding valve and the bypass valve. 10.9%-29.5% of the compressed air can be saved [13][14][15]. Jihong Wang et al designed the pneumatic energy saving circuit with separate control of air inflow and outflow.…”

Section: Introductionmentioning

confidence: 99%

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Research on the controllability and energy saving of the pneumatic direct drive system

Du¹,

Xiong²,

Xu³

et al. 2017

IJHT

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Aiming at the problem of large air consumption in traditional circuits, this paper proposes a new type of pneumatic circuit, which uses the high-pressure gas produced by the actuator to achieve energy conservation. First, the directly-driven pneumatic circuit of the small-sized air compressor is designed, and the corresponding closed circuit experimental table is set up. Second, the mathematical model of the system is established, the input and output of the air compressor are fitted with the least square method, and the transfer function of the system is derived. Third, the transfer function of the system is determined through parameter identification of the small air compressor system, and the time response and frequency response characteristics of the system are analyzed. Finally, the fuzzy PID controller is designed and the simulation and speed control experiment of the system under different working conditions are carried out. The research shows that compared with traditional circuit, the directly driven system of small air compressor can save 70%-74% of air consumption.

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By-pass valve control to improve energy efficiency of pneumatic drive system

Cited by 51 publications

References 1 publication

Adding a Bypass to Ensure the Chemical Plant Production

Adding a Bypass to Ensure the Chemical Plant Production

A Review on Energy-Saving Optimization Methods for Robotic and Automatic Systems

Research on the controllability and energy saving of the pneumatic direct drive system

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