跳至主要内容

Transmission and Consumption of Air Power in Pneumatic System

Read full paper at:
http://www.scirp.org/journal/PaperInformation.aspx?PaperID=51609#.VHKC_WfHRK0

In recent 20 years, energy saving has been done in many projects. However, in pneumatic system, it is not easy to determine or measure the air power flow because of the compressibility of pneumatic system. In this paper, we used air power meter (APM) to measure the energy consumption of flow in pneumatic cylinder actuator system. Meter-in circuit and meter-out circuit of speed control system are used in this research. The model of cylinder system is based on four equations: state equation of air, energy equation, motion equation and flow equation. The model estimates the pressure change in charge and discharge side of cylinder, and also the displacement and velocity of the piston. Furthermore, energy consumption could theoretically be calculated when the change of air state is regarded as isothermal change. Lastly, some data of these two circuits are shown, and the consumption of energy is discussed.
Cite this paper
Chen, S. , Youn, C. , Kagawa, T. and Cai, M. (2014) Transmission and Consumption of Air Power in Pneumatic System. Energy and Power Engineering, 6, 487-495. doi: 10.4236/epe.2014.613042.

[1] Shi, Y.X., Li, X.N. and Teng, Y. (2005) Research on Pneumatic Cylinder’s Exhausted-Air Reclaiming Control Devices. Proceedings of the JFPS International Symposium on Fluid Power, Tsukuba, 7-10 November 2005, 558-563.
[2] Cai, M.L., Fujita, T. and Kagawa, T. (2001) Energy Consumption and Assessment of Pneumatic Actuating Systems. Journal of The Japan Fluid Power System Society, 32, 118-123.
[3] Cai, M.L., Fujita, T. and Kagawa, T. (2002) Distribution of Air Available Energy in Pneumatic Cylinder Actuation. Journal of the Japan Fluid Power System Society, 33, 91-98.
http://dx.doi.org/10.5739/jfps.33.91
[4] Cai, M.L. and Kagawa, T. (2007) Energy Consumption Assessment and Energy Loss Analysis in Pneumatic System. Chinese Journal of Mechanical Engineering, 43, 69-74.
http://dx.doi.org/10.3901/JME.2007.09.069
[5] Li, K.W. (1995) Applied Thermodynamics: Availability Method and Energy Conversion. Taylor & Francis, London.
[6] Cai, M.L., Kawashima, K. and Kagawa, T. (2006) Power Assessment of Flowing Compressed Air. Journal of Fluids Engineering, Transactions of the ASME, 128, 402-405.                                              eww141124lx
  
标签：

评论

发表评论

此博客中的热门博文

A Comparison of Methods Used to Determine the Oleic/Linoleic Acid Ratio in Cultivated Peanut (Arachis hypogaea L.)

Cultivated peanut ( Arachis hypogaea L.) is an important oil and food crop. It is also a cheap source of protein, a good source of essential vitamins and minerals, and a component of many food products. The fatty acid composition of peanuts has become increasingly important with the realization that oleic acid content significantly affects the development of rancidity. And oil content of peanuts significantly affects flavor and shelf-life. Early generation screening of breeding lines for high oleic acid content greatly increases the efficiency of developing new peanut varieties. The objective of this study was to compare the accuracy of methods used to classify individual peanut seed as high oleic or not high oleic. Three hundred and seventy-four (374) seeds, spanning twenty-three (23) genotypes varying in oil composition (i.e. high oleic (H) or normal/not high oleic (NH) inclusive of all four peanut market-types (runner, Spanish, Valencia and Virginia), were individually tested ...
发表评论
阅读全文

Location Optimization of a Coal Power Plant to Balance Costs against Plant’s Emission Exposure

Fuel and its delivery cost comprise the biggest expense in coal power plant operations. Delivery of electricity from generation to consumers requires investment in power lines and transmission grids. Placing a coal power plant or multiple power plants near dense population centers can lower transmission costs. If a coalmine is nearby, transportation costs can also be reduced. However, emissions from coal plants play a key role in worsening health crises in many countries. And coal upon combustion produces CO 2 , SO 2 , NO x , CO, Metallic and Particle Matter (PM10 & PM2.5). The presence of these chemical compounds in the atmosphere in close vicinity to humans, livestock, and agriculture carries detrimental health consequences. The goal of the research was to develop a methodology to minimize the public’s exposure to harmful emissions from coal power plants while maintaining minimal operational costs related to electric distribution losses and coal logistics. The objective was...
发表评论
阅读全文

Evaluation of the Safety and Efficacy of Continuous Use of a Home-Use High-Frequency Facial Treatment Appliance

At present, many home-use beauty devices are available in the market. In particular, many products developed for facial treatment use light, e.g., a flash lamp or a light-emitting diode (LED). In this study, the safety of 4 weeks’ continuous use of NEWA TM , a high-frequency facial treatment appliance, every alternate day at home was verified, and its efficacy was evaluated in Japanese individuals with healthy skin aged 30 years or older who complained of sagging of the facial skin.  Transepidermal water loss (TEWL), melanin levels, erythema levels, sebum secretion levels, skin color changes and wrinkle improvement in the facial skin were measured before the appliance began to be used (study baseline), at 2 and 4 weeks after it had begun to be used, and at 2 weeks after completion of the 4-week treatment period (6 weeks from the study baseline). In addition, data obtained by subjective evaluation by the subjects themselves on a visual analog scale (VAS) were also analyzed. Fur...
发表评论
阅读全文