PKU-STRAW-L: A Simulative Platform Evaluate the Power-Saving Rate of the Intelligent Street Lamp System

In general, the sensor lamps in the corridors, stairwells, or toilets of buildings will change from completely dark to full brightness when someone passes by. It will make the human eyes feel very uncomfortable, and when the sensor lamp is completely dark, the whole corridor and stairwell will be dark, making women and children feel insecure at night. If the lighting is changed to be sensor-less, there is a serious problem of wasted energy. To solve this dilemma, we developed a new type of “LED sensor lamp with low-light mode” that changes the original “full dark mode” to “low-light mode”. As such, when someone approaches the sensor lamp, their eyes will not be uncomfortable with the momentary illumination. Furthermore, when no one passes by, the sensor lamp will stay in low-light mode, so that people returning home at night no longer have to go through dark corridors, thereby achieving safety, aesthetics, and energy-saving purposes. This new sensor lamp’s power consumption in low-light mode is only 1/10 of the high-light mode, but its brightness can be up to half of the high-light mode, making it very suitable for parking lots, corridors, stairways, or toilets of buildings. It only requires the replacement of the lamp but not the original lamp socket, yet the basic brightness can be maintained. Take the general 15W T8 LED lamp (sensor-less) as an example: if it is replaced by this new type of sensor lamp, and the place where it is installed is rarely passed by people, the power saving rate will be as high as 90%. Assuming that there are 12 passers-by per hour, the saving rate is still 81%.

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Measurement and Verification of Injection Molding Machine Energy-Saving Reformation Effect

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.608-609.1139 ◽

2012 ◽

Vol 608-609 ◽

pp. 1139-1142

Author(s):

He Wang ◽

Xue Fei Zhang ◽

Rui Ming Tong ◽

Tao Yong Li ◽

Meng Jie Shi

Keyword(s):

Injection Molding ◽

Energy Saving ◽

Power Saving ◽

Load Condition ◽

Active Power ◽

Saving Rate ◽

Test Results ◽

Molding Machine ◽

Injection Molding Machine ◽

Saving Effect

The energy-saving effect of the injection molding machine energy-saving reformation project was measured in a factory. Based on the analysis of the project energy-saving principle, analyzed the energy-saving rate of the reformed injection molding machine in case of producing different products. The test results show that the active power saving rate is 50% under the load condition, the active power saving rate is more than 75% under the no-load condition and energy-saving effect is more obvious under the no-load condition. Finally, analyzed the power quality impact caused by the energy-saving equipment on the distribution network, put forward some suggestions for improvement.

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Thermal Management for High Power Light-Emitting Diode Street Lamp

Volume 4: Electronics and Photonics ◽

10.1115/imece2010-38557 ◽

2010 ◽

Author(s):

M. Ying ◽

S. M. L. Nai ◽

P. Shi ◽

J. Wei ◽

C. K. Cheng ◽

...

Keyword(s):

Thermal Management ◽

Thermal Performance ◽

High Power ◽

Heat Dissipation ◽

Light Emitting Diode ◽

System Level ◽

Light Emitting ◽

High Power Led ◽

Street Lamp ◽

Lamp System

Light-emitting diode (LED) street lamp has gained its acceptance rapidly in the lighting system as one of choices for low power consumption, high reliability, dimmability, high operation hours, and good color rendering applications. However, as the LED chip temperature strongly affects the optical extraction and the reliability of the LED lamps, LED street lamp performance is heavily relied on a successful thermal management, especially when applications require LED street lamp to operate at high power and hash environment to obtain the desired brightness. As such, a well-designed thermal management, which can lower the LED chip operation temperature, becomes one of the necessities when developing LED street lamp system. The current study developed an effective heat dissipation method for the high power LED street lamp with the consideration of design for manufacturability. Different manufacturable structure designs were proposed for the high power street lamp. The thermal contact conductance between aluminum interfaces was measured in order to provide the system assembly guidelines. The module level thermal performance was also investigated with thermocouples. In addition, finite element (FE) models were established for the temperature simulation of both the module and lamp system. The coefficient of natural convection of the heat sink surface was determined by the correlation of the measurement and simulation results. The system level FE model was employed to optimize and verify the heat dissipation concepts numerically. An optimized structure design and prototype has shown that the high power LED street lamp system can meet the thermal performance requirements.

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Business Resilience During Power Shortages: A Power Saving Rate Measured by Power Consumption Time Series in Industrial Sector Before and After the Great East Japan Earthquake in 2011

Advances in Time Series Methods and Applications - Fields Institute Communications ◽

10.1007/978-1-4939-6568-7_12 ◽

2016 ◽

pp. 239-257 ◽

Cited By ~ 1

Author(s):

Yoshio Kajitani

Keyword(s):

Time Series ◽

Power Consumption ◽

Power Saving ◽

Industrial Sector ◽

Great East Japan Earthquake ◽

Saving Rate ◽

Before And After ◽

Business Resilience ◽

Power Shortages

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Energy-Saving Algorithm Design and Simulation in Intelligent Street Lamp System

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.94-96.631 ◽

2011 ◽

Vol 94-96 ◽

pp. 631-636 ◽

Cited By ~ 1

Author(s):

Ji Ming Yu ◽

Feng Wu ◽

Xiao Yong Yan

Keyword(s):

Energy Conservation ◽

Energy Saving ◽

Environmental Protection ◽

Algorithm Design ◽

Light Pollution ◽

Lighting System ◽

Sensor Device ◽

Street Lamp ◽

Lamp System ◽

Saving Algorithm

Abstract. this paper proposes an energy saving algorithm based on wireless network in the intelligent street lamp system, which can real-time intelligent detect conditions illumination, person’s position and other infomation, street lamps builds a WSN network and collaborative adjustment its illuminations according to the information collected by its sensor device,compared with the current lighting system, the system more benefit in energy saveing, extending the lamp life, reduce light pollution on the environment. For energy conservation and environmental protection construction, intelligent street lamp system play an important role.

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Frequency Control of Fan and Pump in Flue Gas Desulfurization for Energy Saving and Environment Protection

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1008-1009.1106 ◽

2014 ◽

Vol 1008-1009 ◽

pp. 1106-1109

Author(s):

Zhi Feng Dong ◽

Yu Dong Han ◽

Lian Shao ◽

Xu Wen Cheng

Keyword(s):

Energy Saving ◽

Flue Gas ◽

Similarity Theory ◽

Frequency Control ◽

Power Saving ◽

Flue Gas Desulfurization ◽

Saving Rate ◽

Environment Protection ◽

Similarity Condition ◽

The Relationship

The causes of greater energy loss for throttling in the fan and pump were analyzed, and the principle of frequency control in energy saving were analyzed on the basis of the similarity theory, too. To export the relationship between the power saving rate and flow, the relationship between the energy consumption of throttling regulation and flow were described. Comparison between frequency control and throttling regulation in changing the flow shows that motor frequency control applied in pump and fan is an efficient way to save power. It confirms that under meeting the similarity condition, the power saving rate of theoretical calculation is consistent with the measured data.

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