Experimentتكنولوجيا السيارات- Internal Forced convenction Heat transfer Air Flow through Rectangular Duct.objective: Study the convection heat transfer ofairflow through rectangular duct.Valve ThTop Dead CentreExhaust Valve ClassCP.N; ~RIVavg TiK2.11Te To18.8 21.3 45.8Nath NePreCalculations:.Q = m cp (Te-Ti)m: Varg Ac Acca*bQ=hexp As (Ts-Tm)22.6118.5 20.846.3Tm = Te-Ti =25AS-PL= (a+b)*2*LNu exp=Re-Vavy Dheep Dhk2aba+bNuDhthe-(TS-Tm)Ts. Tmy Name / Nu expNaxeبب ارتدانالعشري

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Answered: Experiment تكنولوجيا السيارات -…

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.39P

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Assuming Reynolds analogy applies, estimate the heat transfer coefficient in BTU/hr-ft2-°F, for water flowing inside a 2.0 in. ID smooth horizontal straight pipe at a velocity of 4 fps and an average temperature of 78°F.a. 1790 b. 2000 c. 2910 d. 2240
Plot curves on a single plot that display the relationship between the pressure generated by thepump as a function of flow rate of water at 20 °C through the three branches of the piping systemshown below (delta P on the y axis and flow rate on the x axis; therange of the pressure as 0 to ~1 MPa). Pipe inner diameter: 0.0254 mPipe material: copperTypical mass flow rate of interest: 0.5 kg/sIgnore minor losses of tee's at points A and B and any features of branch 3Consider minor losses of two 90° elbows in branch 2
On a single plot, show curves that show the relationship between the pressure generated by thepump as a function of flow rate of water at 20 °C through the three branches of the piping systemshown below (delta P on the y axis and flow rate on the x axis; therange of the pressure should be 0 to ~1 MPa). Pipe inner diameter: 0.03 mPipe material: copperTypical mass flow rate of interest: 0.5 kg/sIgnore minor losses of tee's at points A and B and any features of branch 3Consider minor losses of two 90° elbows in branch 2
For an inlet valve, the mass flow rate through the valve is 0.44 kg/s. The flow coefficient is 0.62 and the cylinder pressure is 105 kPa. Assume intake system pressure and temperature are 180 kPa and 527 K, the specific heat ratio is 1.3 and R =287 J / kg.K. The area of the valve is (SI unit): Select one: a. 2.30*10-3 O b. 3.45*10-2 O c. 1.43*10-3 O d. 1.75*10-3 O e. 0.85*10-2
%११। A 1.:Po Steam Powerpc Wed He Home IGHT Desion 52 Regences YIW Hed f me what you want to go timehews 1 F 7EET AaBbCc AaBbCc Aalbice Abbc AaB AaabCe aabCe do Ce AaBbC Pyle LEY Formal P IU--- ====... Normele spec. Heron Hig 100 Subte Supcie um imphas interne L Strong Fire • карие been- Tede 13. A power plant operates on a regenerative vapor power cycle with one closed feedwater heater. Steam enters the first turbine stage at 7 MPa and 550°C and expands to 700 kPa, where some of the steam is extracted and diverted to a closed feed water heater. Condensate exiting the feed- water heater as saturated liquid at 700 kPa passes through a trap into the condenser. The feed- water exits the heater at 7 MPa with a temperature of 175°C. The condenser pressure is 8 kPa. If the power developed is 100MW, determine: the thermal mass flow rate into the first stage turbine. (mal efficiency of the cycle, and (b) the sre
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Mass flow rate of hot fluid is 0.007 kg/s. Convection heat transfer coefficient of hot fluid stream is 1000 W/m?.°C. Thermophysical properties are given as follows. Hot fluid; c, = 5000 J/kg.°C Water; dynamic viscosity, µ = 0.001 Pa.s; Prandti number, Pr = 6.14; thermal conductivity, k = 0.607 W/m.°C; density, p = 1000 kg/m³; specific heat c, = 4200 J/kg.°C. Neglecting conduction resistance of the pipe, calculate heat exchanger effectiveness (ɛ), heat transfer rate (Q in J/s), outlet temperatures of the hot fluid (Thout) and water (Tw.out) for varying mass flow rate values of water provided below. Mass flow rate of water, m (kg/s) 0.0025 0.01 0.025 0.05 0.075 0.1 Plot heat exchanger effectiveness (ɛ), heat transfer rate (Q in J/s), outlet temperatures of the hot fluid (Thout) and water (Tw.out) as a function of water mass flow rate (m .). Comment on the results. Hot fluid in (65 °C) Water Water in (25 °C) out d = 0.5 cm Hot fluid out L= 5 m
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The rate of heat transfer through a fluid is much higher by conduction than it is by convection. Select one: True False Heat transfer in solids is always due to conduction Select one: True False

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