(A+) 성균관대학교 기계공학부 - 열유체공학설계실습 Heat transfer
*진*
- 최초 등록일
- 2020.12.26
- 최종 저작일
- 2020.09
- 11페이지/
MS 워드 - 가격 2,000원
다운로드
장바구니
목차
1. Result1) Data
2) Convection coefficient by Newton’s cooling law
3) Convection coefficient by Hilpert correlation
4) Convection coefficient by Churchill and Bernstein equation
2. Discussion
1) Error in Newton's cooling law
2) Error in Hilpert correlation
3. Conclusion
4. References
5. Appendices
본문내용
1.3 Convection coefficient by Hilpert correlationHilpert correlation can be expressed in the following [Equation 2]. The coefficient of convection heat transfer can then be obtained using the Nusselt number derived in [Equation 3].
Density(ρ), Thermal conductivity(K_air), Prandtl number(Pr) should be calculated at Film temperature. According to [Table 2], these constants could be calculated. We use linear interpolation to find Density(ρ), Thermal conductivity(K_air), Prandtl number(Pr) at Film temperature(T_f=23.65℃) in advance.
1.4 Convection coefficient by Churchill and Bernstein equation
We can calculate Nusselt number, convection coefficient by the Churchill and Bernstein correlation as well. The equation is as follow.
2 Discussion
Compare the convection heat transfer coefficient, calculated by the three method.
In this situation, we assume that Churchill and Bernstein correlation’s coefficient is the exact solution.
참고 자료
Heat and Mass control lab. “Lab3. Convection heat transfer (2020-2)”, Mechanical engineering, Sungkyunkwan Univ.Heat and Mass control lab. “Heat trans_Final report data_example”, Mechanical engineering, Sungkyunkwan Univ.
Frank M. White, (2016) Fluid mechanics, 8th Ed. McGraw-Hill, New York
“Heat transfer” Internet
https://en.wikipedia.org/wiki/Heat_transfer, September. 21, 2020
“Dimensionless number” Internet
https://en.wikipedia.org/wiki/Dimensionless_numbers_in_fluid_mechanics, September. 21, 2020
“Convective Heat Transfer Coefficient” Internet
https://www.nuclear-power.net/nuclear-engineering/heat-transfer/convection-convective-heat-transfer/convective-heat-transfer-coefficient/, September. 21, 2020
“Pitot tube” Internet
https://en.wikipedia.org/wiki/Pitot_tube, September. 21, 2020
“Examples of Convection In Everyday Life” Internet
https://studiousguy.com/examples-convection-everyday-life/, September. 21, 2020
“Velocity Boundary Layer – Thermal Boundary Layer” Internet
https://www.nuclear-power.net/nuclear-engineering/fluid-dynamics/boundary-layer/velocity-boundary-layer-thermal-boundary-layer/, September. 21, 2020
