The heat transfer for a rod of diameter (D-21 +0.9 mm) immersed in a fluid (conductivity k 0.219% W/mK of value) can be described by a dimensionless quantity called the Nusselt number, which can be calculated using AD Nu where h is the convective heat transfer coefficient (h-115 W/m K with an uncertainty of 3%). Estimate the total uncertainty in Nu.
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- Wind blows over a whirlpool hot tub. The air temperature is 290 K with a convection heat transfer coefficient equal to 400 W/m-m- K. The water temperature is 315 Kwith a convection heat transfer coefficient equal to 450 W/m-m-K. Report the temperature at the surface of the water in units of Kand using 4 significant digits. Note that the error band on this answer is 0.5%. Type your nunmeric answer and submitA J- type thermocouple is used to measure the temperature in a heating process. Sheath material used is SS316. The length of the sheath is 11mm and thickness is 0.2mm. Find the time constant of the sheath. Material Q(kg/m3)s(J/Kg - °c)K(W/m-k) Platinum 21450 130 71.6 SS304 8030 500 21.4 SS316 7990 500 21.4 SS410 7750 460 24.9 Air 1.20 1005 0.025 MgO Powder 3580 877 26.8 Silicon compound3210 800 Time constant of the bare material is, T=A convection problem has a Nusselt number equai to 10. where the contribution of diffusion is normalised and set equal to a value of 1.0. Select the correct statementis): | The ratio of advection to diffusion is 9. The ratio advection to convection is 10 The ratio of convection to diffusion is 10. The ratio advection to convection is 9. The ratio of advection to diffusion is 10.
- A J- type thermocouple is used to measure the temperature in a heating process. Sheath material used is SS316. The length of the sheath is 10mm and thickness is 0.2mm. Find the time constant of the sheath. Material Q(kg/m3) s(J/Kg - oc) K(W/m-k) Platinum 21450 130 71.6 SS304 8030 500 21.4 SS316 7990 500 21.4 SS410 7750 460 24.9 Air 1.20 1005 0.025 MgO Powder 3580 877 26.8 Silicon compound 3210 800 3 Time constant of the bare material is, T= AnswerA J- type thermocouple is used to measure the temperature in a heating process. Sheath material used is SS316. The length of the sheath is 13mm and thickness is 0.3mm. Find the time constant of the sheath. Material QU(kg/m)s(J/Kg - °c) K(W/m-k) Platinum 21450 130 71.6 SS304 8030 500 21.4 SS316 7990 500 21.4 SS410 7750 460 24.9 Air 1.20 1005 0.025 MgO Powder 3580 877 26.8 Silicon compound3210 800 Time constant of the bare material is, T=Fluid fluid with a temperature of -20C passes through a copper cylindrical wire. The outer diameter of the wire is 10 mm. The wire is in contact with air at a temperature of 25C, which is h = 50 W / m2K. The heat conduction coefficient of the wire is k = 0.5 W / mK. It will be applied in different thicknesses. a) Calculation separately for the resulting heat transfer per m when 0, 2.5, 5 and 7.5 m are applied. b) To interpret which thickness will increase the heat transfer by calculating the critical diameter. c) Graph the insulation and heat transfer rate against each other.
- A J- type thermocouple is used to measure the temperature in a heating process. The length of the bare material is 120mm and thickness is 1.5mm. Find the time constant of the bare material. уре of Thermo-Material K ( Q W/m- (kg/m3) k) IS |(J/Kg- oc) couple J Iron- Constantan 46 8535 345 K Kromel- Alumel 35 8738 380 IT Copper- Constantan 160 8902 316 Cromel - Contantan 33 8825 336 Nicrocil- Nisil 34 8702 376 Pt(30%)Rhodium - 19 15718 56 Pt(6%)Rhodium Platinum(13%)Rodium, 55 16628 99 - Platinum Platinum(10%)Rodium 52.9 16745 99 Platinum Time constant of the bare material is, T=Answer this ASAP The diameter of the tube is 25 mm. The specific heat of water is 4.18 kJ/kg. °C. The overall heat transfer coefficient is 0.7 kW/m².°C. 1.Cmin 2.Maximum heat transfer rate 3.Heat transfer surface areaKısa Sınav:HEAT TRAN X b heat transfer | bartleby x b Search results for 'hea X O WhatsApp W Reynolds sayısı - Vikip x E Thermal entry length X * Reynolds Number Cal x i uzemoys.ogu.edu.tr/courses/10422/quizzes/49234/take/questions/368299 E Uygulamalar G Google O Takip Ediliyor - Twit. O YouTube O Facebook O Eskişehir Osmangaz. KK MM Canvas'ta Oturum AÇ u Online Kurslar - Her... k Şekerbank zumba Kariyer Adam E Okuma listesi ev • Sınav başladığınız andan itibaren etik ilkelere uyacağınızı beyan ve kabul etmiş olmaktasınız. esuzem Başarılar dilerim. Prof. Dr. Zekeriya ALTAÇ A refrigerated compartment of a truck is H=2.4-m high and L =6.6-m long. On a hot summer day, it is parked inside of a storage warehouse at T=35°C. The exterior surface of the compartment is maintained at a uniform T=26°C temperature. The warehouse can be assumed quiescent. Find the steady rate of convection heat loss (in W) from only one-side of the compartment. (Use Churchill-Chu correlation if necessary.)…
- A plane wall is insulated on its left side (? = 0). The wall generates energy uniformly at arate of ?̇ [W m 3⁄ ] and has thermal conductivity ?. On its right side (? = ?), the wall is exposedto a fluid at temperature ?" with convection coefficient ℎ.a) Draw a schematic of this plane wall. Make the schematic large enough that you cansketch the temperature profile within the wall after solving for it in later steps.b) Write out the full form of the Heat Diffusion Equation (HDE) in the appropriatecoordinate system for this physical scenario. Simplify the HDE and write out theappropriate boundary conditions in their general form (e.g., ?| #$% = ?& ).c) Derive an expression for the steady-state temperature distribution ?(?) within thewall. You may start from the general solution provided in Appendix C of the Bergmantextbook; or you may derive the solution directly from the differential equation andthe boundary conditions. Annotate your schematic by sketching the temperatureprofile…Answer this ASAP The diameter of the tube is 25 mm. The specific heat of water is 4.18 kJ/kg.°C. The overall heat transfer coefficient is 0.7 kW/m².°C. 1. Schematic of temperature distribution 2.ΔTLMTD 3.Actual heat transfer rate 4.Cmin 5.Maximum heat transfer rateA body having a cylindrical shape of length equals temperature is equal to 300 K. The initial temperature of the body is equal to 350 K. If the heat convective coefficient is equal to 4.2 W/m^2.K. What condition should the thermal conductivity k verify in order to apply the lumped capacitance method. 1.9 m and diameter equals to 400 mm is inside a room where the ambient Select one: a. k is less than 4.2 W/m.K b. k is greater than 1.6 W/m.K O c. k is greater than 3.8 W/m.K O d. k is less than 2.1 W/m.K