WebJul 3, 2024 · In the Biot number formula, ‘Cl’ is the characteristic length of the body. For simple geometries, the characteristic length is; For a long cylinder; = r/2. Plane wall: … WebJan 25, 2024 · The Biot number is defined as ... The Fourier number in the case of the sphere and the infinite length cylinder is a bit different. It actually involves radial heat …
Why different characteristic dimension for Biot Number and …
WebThe fouling Biot number is a measure of the relative magnitude of fouling on a heat exchanger surface as described by Fryer and Slater [116] and Somerscales et al. ... If the plate, cylinder, and a sphere are of the same characteristic dimension, then a cylinder is heated (cooled) in two times, and the sphere three times faster than the plate ... WebIf the sphere has a diameter of 0.1 m, a thermal conductivity of 24 W/(m⋅K), and a thermal diffusivity of. Show transcribed image text. Expert Answer. ... When using the one-term approximation for transient 1-D conduction, what is the value of the applicable Biot number? Use Table 5.1. Bi = Your answer is correct. can i take amitriptyline with diazepam
Lecture # 10.pdf - Lecture # 10 6.0 Transient One... - Course Hero
WebThe characteristic length for the Biot number is slab L = L cylinder L = r o sphere L = r o contrast this versus the characteristic length for the lumped system analysis. With this, two approaches are possible 12. 1. use the first term of the infinite series solution. This method is only valid for Fo>0.2 WebJan 11, 2024 · It is well known that the criterion Biot number is 1 for circular pipe and 2 for sphere apparatus. When the considered Biot number is larger than the relative value, then the outer radius of the bare pipe or apparatus is definitely larger than its critical radius and any insulation will bring decrease of its heat loss or heat gain. Webwhere: α is the thermal diffusivity (m 2 /s); t is the time (s); L is the characteristic length through which conduction occurs (m); Interpretation of the Fourier number. Consider transient heat conduction in a slab of thickness L that is initially at a uniform temperature, T 0.One side of the slab is heated to higher temperature, T h at time t = 0. The other side is … can i take amitriptyline with xanax