Papers by Keyword: Cooling System

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Authors: Mohd Irwan Yusoff, W.Z. Leow, M. Irwanto, N. Gomesh, M.R. Mamat, I. Safwati
Abstract: Together with advancement associated with technologies things have gotten simpler and less complicated for people. Automation is usually the employment of manage devices along with details technologies to scale back the need regarding human being do the job inside creation associated with things along with products and services. Solar photovoltaic (PV) technology is regarded as the famous energy source amongst renewable energy sources which in turn that utilize to relieve usage of fossil fuel. PV energy is usually a lot of abundant energy sources among renewable energy. PV technology is change sunlight energy into electrical energy. The performance of electricity of PV module can be affected by solar irradiance and ambient temperature. When PV technology is process solar irradiance, producing lowered performance of PV modules and increasing temperature of PV module. When the temperature of PV module is reach at or more than 35 °C that detected by LM 35, PIC 18F4550 is switched ON the DC cooling system and vice versa. After switch ON the cooling system, the temperature of PV module is reducing. This controller system is an intelligent system because it will run the cooling system automatically when the temperature of PV module reaches setting level that detected by temperature sensors. The higher efficiency of PV cell, the payback period of the system can be shorted and the lifespan of PV module can also be longer.
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Authors: Jetsadaporn Priyadumkol, Chawalit Kittichaikarn
Abstract: The power trend of using server systems in data center is continuously increasing. Cooling system consumed 38% of total energy usage which is a significant contribution in the energy consumption. As a result, the efficient energy usage in data center is concerned.Normally a raised-floor is widely used in data center cooling system which delivers cool air through perforated tiles to a front of server racks. However it is usually found that this cool air cannot effectively remove a heat dissipation at the top of server racks. Therefore, the environmental condition in data center must be designed strictly to avoid disruption that caused by overheat.This paper gives some guidelines to help in the better design. Commercial Computational Fluid Dynamics (CFD) program was used to analyze the air flow from raised-floor air conditioning system. A tetrahedral of 1.8 million meshes with k- turbulence model were used to obtain the air flow velocity and temperature distributions in the room. The model was validated by comparing simulation results with actual measurements. As a result, dimensionless parameters in the form of supply heat index(SHI), for understanding the optimization of relative airflow distribution to the heat load of server rack was found. It shows that these parameters provide an effective tool to the improvement of energy efficiency in raised floor data center.
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Authors: Xue Ling Yang, Xiao Jing Li
Abstract: Laser device is an important apparatus that have been widely applied in various fields. The paper classified the laser device according to the different of working material forms and discussed the main characteristics. Main constitute of laser device is working material and excitation source. Adjusting measures of the resonant cavity is quite important for laser device, the author detailed discussed the operation procedure. As to the maintenance of the cooling system, the author also discussed the manipulate steps.
301
Authors: Hong Mei Yang
Abstract: Cooling system is an important component of hot stamping dies, directly affects the quality and performance of the product. This article studies the work of hot stamping die process variation in temperature and heat transfer methods, analyzes the main factors affecting the cooling effect, and the use of numerical simulation of the flow of cooling water to simulate the state, and proposed rationalization proposals.
16
Authors: Wei Fan, Xin Liu
Abstract: As the core components in the wind power generator set, the maintenance of gear box is very difficult, and its maintenance fee also is extremely high. To prevent gearbox teeth fault injuries in the supernormal heavy load, the driving friction heat distribution and heat transfer characteristics of wind power gear box are studied, the wind power generator increasing gearbox structure characteristics are analyzed. The parametric model of increasing gearbox is completed in UG software and finite element analysis of gear temperature and heat stress is conducted in ADINA software. Through the analysis on the calculation results, the design idea of wind power generator cooling system is summarized, and provides theoretical basis for the design of increasing gearbox cooling system for wind power generator.
185
Authors: Qing Zhen Yin, Rui Kun Song, Xiao Zhang, Bin Qi
Abstract: The MPI/Cool analysis module is used to simulate and analyze the cooling system of the car’s bumper. After improvement, a comparably reasonable cooling system is designed. The situation of curling and warping of the formed bumper parts is simulated and analyzed through the MPI/Warp analysis module, the cause of the excessive warpage in the formed parts is found out and relative solutions are put forward. The forming technology of injection mold is optimized and the problem of excessive warpage is resolved.
375
Authors: Wei Huang, Zi Yu Wu, Jian Hong Guo, Hai Feng Wang, Guo Biao Gu, Chang Hai Miao, Yan Fei Guo, Ling Cheng
Abstract: Cooling systems is significance for the structure and energy-saving operation of generator. Different cooling methods affects the efficiency and energy losing of generator. In order to quantitatively calculate the energy consumption of cooling system, this paper proposed three energy consumption indexes for large generator. Energy consuming of a dual inner water cooled generator, a water-hydrogen-hydrogen cooled generator and an evaporative cooling generator were calculated according to the proposed method. The results indicate that the total energy consumption of dual inner water cooled generator is maximum because of its low efficiency, and evaporative cooling generator effectively reduces energy consumption.
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Authors: Z.J. Zuo, Si Bi, L.R. Fu, Z.Q. Weng, S.H. Peng
Abstract: Keywords: ion nitriding furnace cooling system vacuum system Abstract. About fuction of vacuum plasma nitriding furnace cooling system, and its design and calculation of main parts, in particular control of water consumption. The cooling water system have been set into the water flowing through the four heat shield, and gradually take the heat, then the coolant out by outlet pipe. Cooling water flows through layers of insulation to varying degrees of cooling, to ensure that each level of temperature, precise calculation of water flow can only be guaranteed to ensure the maximum water savings and cooling the furnace down. This article provide the basis for vacuum furnace cooling system design in the future.
3462
Authors: Zainal Ambri Abdul Karim, Abdul Hadi Mohd Yusoff
Abstract: Electric motor performance directly affects the overall performance of an electric vehicle (EV). The electric motor windings heats up when operated under extreme load and hence, reducing the efficiency of the vehicle. As such, EV propulsion system requires cooling systems, not only to the electric motor but also to the battery banks in order to ensure efficient operation and maximizing the electric components and vehicle lifetime. The project focuses on the design and development of a liquid cooling system for an electric vehicle propulsion system to determine the optimum size and cooling capacity by thermodynamic analysis. This paper described the analysis of energy transfer (heat removal) by using thermal resistance network approach in determining the suitable design for the cooling system of an AC-50 induction electric motor. The CAD drawing was generated to suit the dimension constrain and the cooling system was completed using CATIA software. The results showed that the optimal design for the water jacket for the maximum heat removal of 5500 W from the electric motor, should have a wall thickness of 0.5 cm with an annular thickness of 2.4 cm. Both copper and aluminium exhibited similar cooling capabilities with the latter having lower cost and ease of manufacturing.
209
Authors: Mohd Bin Sulaiman Hafis, Mohd Jamir Mohd Ridzuan, Ahamad Zaidi Ahmad Firdaus, S.M. Shahril, Ramli Nur Farahana, C.K. Chong
Abstract: This paper presents theoretical and experimental works on the effect of heat transfer for a thermoelectric (TE) cooling system. The study focuses on thermal performance of the system through the optimisation of heat dissipation system for two prototypes that have aluminium and copper heat sink design, respectively. The study revealed that heat sink base area and fin height influenced thermal performance.
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