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전체자료 21개

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전기차 배터리팩 내 열분석 및 성능개선 열유동해석(영어 발표 ppt 자료 및 레포트)

The demand for batteries is increasing due to the development of electric vehicles. However, there is a problem that the heat generation from battery increases as the charge and discharge cycle progresses and it leads the battery efficiency degraded. Therefore, we conducted analysis to control the generated heat from the cells and improve the cooling performance. In this report, we only considered lithium-ion batteries which are widely used and air-cooled method which has simpler structure than water-cooled system. We used cell properties of 21700 30T (Samsung SDI) and battery pack dimensions from Tesla Model 3 for our simulation realistic. We made 5 different battery pack models. As a default model, we set rectangular parallelepiped shape and inlet/outlet position at the center of the two facing sides. Then we moved inlet and outlet position about 90mm left, distributed the inlet, and added fins to battery pack’s outside and inside. For these models, we simulated air-cooled system and compared the result of battery cells temperature.

공학/기술| 2023.02.10| 30페이지| 6,000원| 조회(180)

열유체설계실습, 기계공학 열유체, 열유체 CFD, 열유체 보고서, 열유체실습 해..

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피자 오븐의 효율적인 배치를 통한 열유동해석 (영어 발표 ppt 자료 및 레포트)

Heat and fluid flow always exist in life around us. CFD is a program used to analyze these systems and it can show how the flow changes based on Fluid Dynamics. Experiment after experiment by setting various conditions with CFD, it is possible to obtain optimal conditions for any system without experiment directly. The goal of project is to find the optimal conditions for a particular system through CFD analysis. Human history can be divided before and after the use of fire. In this CFD project, we will further develop such thermodynamic systems for using CFD. Oven (Pizza oven) has been fully recognized among various thermodynamic systems. The oven is a heating system that has historical and scientific significance and can be founded from the Neolithic ruins to the kitchen of a modern pizza restaurant. Through this project, we have identified the fact that the structure of the oven make the efficiency better, and discovered ways to further develop it through various simulation experiments using CFD.

공학/기술| 2023.02.10| 53페이지| 7,000원| 조회(113)

열유체설계실습, 기계공학 열유체, 열유체 CFD, 열유체 해석 레포트, 열유체 ..

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암호화폐 채굴 공장의 효율적인 열유동해석 (영어 발표 cfd ppt 자료 및 레포트)

As the price of graphics cards soared due to Bitcoin, it was necessary to suggest an efficient way to arrange graphics cards. We first interpreted the existing model and then obtained the surface temperature of the graphics card. It then simplified the graphics card model by expanding its interpretation, and set a single floor of the tower where dozens of graphics cards were arranged as control volume. The optimal graphics card arrangement within the control volume was set to 3 cases, and a total of 6 cases were analyzed considering when air flow in the mining plant enters the intake and exhaust areas. Through analysis, the temperature of the control volume and the temperature of the inlet of the graphics card were measured to find the arrangement with the lowest average temperature. Since the power required for mining and the temperature of the graphics card are proportional, it can be interpreted that the lower the average temperature, the more efficient the thermal management of the entire mining plant

공학/기술| 2023.02.10| 30페이지| 7,000원| 조회(149)

열유체설계실습, 기계공학 열유체, 열유체 CFD, 열유체 보고서, 열유체실습 해..

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보일러의 효율적인 저가 설계 열유동해석 (영어 발표 cfd ppt 자료 및 레포트)

As global warming becomes more serious, eco-friendly technology is drawing attention. One of them is an economizer machine that recover energy from waste heat and uses it again. Such economizers are also installed in boilers that are common around the house, so we have sought to increase the efficiency of economizers of boilers in this project. To determine the conditions of the highly efficient economizer, we tested it by changing various elements. First, it was tested by changing three materials: aluminum, copper, and stainless steel (STS304). The heat transfer (Q) is calculated as 888.33W, 782W, and 721.91W, respectively, and copper with the highest heat transfer was the most efficient material. Then, it was tested by changing the diameter of the pipe. It was tested with aluminum pipes of 11 mm, 22mm and 33 mm, showing heat transfer of 45.85 W, 782 W and 168.9 W, respectively. It was also tested as pipe with 6 bending & 70mm distance between pipes by changing number of bending and the distance between the pipes, and it showed 464.32 W of heat transfer.

공학/기술| 2023.02.10| 34페이지| 7,000원| 조회(189)

열유체설계실습, 기계공학 열유체, 열유체 CFD, 열유체 보고서, 열유체실습 해..

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최적의 에어프라이어 설계에 관한 열유동해석 (영어 발표 cfd ppt 자료 및 레포트)

What is Arifryer?- Device that cooks food using air, not oil- The air from the fan descends along the side and then rises up through bottom surface - Our goal is to find the most effective model<중 략>Our goal is to find a model that can have an optimal temperature distribution with several conditions, so conduction/convection/radiation can be considered

공학/기술| 2023.02.10| 35페이지| 7,000원| 조회(444)

열유체설계실습, 기계공학 열유체, 열유체 CFD, 열유체 해석 레포트, 열유체 ..

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