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Comparison of different energy saving lights using solar panel

Frontiers in Energy 2016年第4期10卷 466-472页

作者： Huzaifa MUBARAK Saad Bin Abul KASHEM Sarawak Campus Swinbume University of Technology Kuching93350 Malaysia

The recent trend in light emitting diode or LED lighting applications and their claimed energy saving capabilities together with their overall attractiveness has us all convinced that they really are a greener alternative to the compact fluorescent lights or CFL. As convincing as it seems, the actual energy saving capabilities of LEDs are yet to be proven scientifically or at the least, on an empirical level when compared to CFLs. This paper tackles the issue with the use of a solar cell by evaluating the photovoltaic current and voltage generated by the solar cell subjected to each lighting system. Graphical representations are drawn and a conclusion is then reached based on the amount of power generation in the solar cells in order to determine the energy saving capabilities of each lighting system and its efficiency. From the result, it has been found that an LED is 3.7 times more power efficient than a CFL based light source of equal wattage.

关键词： CFL LED empirical solar lumens energysaving fluorescent

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The Pressure Gradient Elastic Wave： Energy Transfer Process for Compressible Fluids with Pressure Gradient

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Journal of Mechanics Engineering and Automation 2013年第1期3卷 53-64页

作者： Yan Beliavsky Super Fine Ltd. Industrial Park Kidmat Galil Tiberias 14101 lsrael

The temperature separation was discovered inside the short vortex chamber （H/D = 0.18）. Experiments revealed that the highest temperature of the periphery was 465 ℃, and the lowest temperature of the central zone was -45 ℃ （the compressed air was pumped into the chamber at room temperature）. The objective of this paper is to proof that this temperature separation effect cannot be explained by conventional heat transfer processes. To explain this phenomenon, the concept of PGEW （Pressure Gradient Elastic Waves） is proposed. PGEW are kind of elastic waves, which operate in compressible fluids with pressure gradients and density fluctuations. The result of PGEW propagation is a heat transfer from area of low pressure to high pressure zone. The physical model of a gas in a strong field of mass forces is proposed to substantiate the PGEW existence. This physical model is intended for the construction of a theory of PGEW. Understanding the processes associated with the PGEW permits the possibility of creating new devices for energy saving and low potential heat utilization, which have unique properties.

关键词： PGEW (Pressure Gradient Elastic Waves) temperature separation Ranque effect vortex chamber heat transfer energysaving low potential heat utilization.

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Experimental Research of Performance on Water-Water Multi-functional System

Experimental Research of Performance on Water-Water Multi-fu...

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2011 IEEE 2nd International Conference on Computing, Control and Industrial Engineering(CCIE 2011)

作者： Xingwang Zhu,Xueli Nie,Gong Yi Department of Mechanical and Electrical Engineering Zhengzhou University of Light Industry,Zhengzhou,China Fenying Guo The Fifth Research and Design Institute of Nuclear Industry Zhengzhou,China Yugui Su Guangzhou M.universe air Cond.tech.development Co.,ltd Guangzhou,China

A new type of water-water multi-functional system consisting of double four-way valve is *** fundamentals and the operation modes are *** research on operation characteristics of refrigerating capacity,heating capacity,suction and discharge temperature and pressure shows that the unit operates reliably long in different operation conditions,and that the variation of characteristics is within a reasonable *** of performance of the unit in refrigerating and hot water mode is highest and EER reaches up to 5.2 with the minimal value approximately 4,as the service efficiency of the unit is improved by recovering the condenser heat to heat hot water.

关键词： Water-water multi-functional system energysaving heat recovery

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