The heat transfer from a 3 m diameter sphere to a 27 deg C air stream over a time interval of one hour is 4000 kJ. Estimate the surface temperature of the sphere if the heat transfer coefficient is 15 W/m^2K.
Q: A frictionless piston-cylinder device contains a saturated liquid-vapor mixture of water at 400K.…
A: Given data dQ = heat transfer = 960kJ Tair = 300K Twater = 400K We need to find => Total entropy…
Q: For the process to be capable of meeting design specification the process capability index must be O…
A: option - a are correct . process to be capable of meeting design specification process capability…
Q: List five of engineering controls and administrative controls to reduce the hazard of the car…
A: First understand hierarchy of control. There are five different level of action to control hazard.…
Q: The truss shown is supported by a hinge at A and a roller at G. Determine all bar forces of the…
A:
Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…
A: Given data:- Weight of the door (F)=400 lb static friction at A =0.15 static friction at B= 0.25 To…
Q: A straight pin fin has diameter of 4 mm and length of 2 cm. It is made of an alloy with thermal…
A:
Q: Based on the Clausius inequality, select the correct expression for the process with the same…
A: Given data:- Claudius inequality for cycle( initial and final condition are same) To find:- Which…
Q: Problem 07.114 - Determine the normal stress and shearing stress in the weld of a steel pressure…
A:
Q: has A disk is into a fixed axis of rotation through its center as shown, and a cord wraps around it,…
A: (a) Write the given data. ω0=2.2 rad/sα=6.4 rad/s2 CCWr=1.52=0.75 m
Q: A hydraulic jack has a diameter ratio between the two pistons of 10:1. The diameter of the larger…
A:
Q: 7.7. A fluid flows in a 75 mm pipe which discharges into a 150 mm line. What is the Reynolds number…
A: Given:Diameter of first pipe, D1=75 mmDiameter of second pipe, D2=150 mmThe Reynolds number in 75 mm…
Q: The pipe ABCDE is supported by ball-and-socket joints at A and D and by cable ECF that passes…
A: Given data, Intensity of distributed load, w = 1500 N/m Coordinates of A = (0, 0, 0.24) in m…
Q: Given a binary phase diagram, the composition of an alloy, and its temperature, and assuming that…
A: Binary Phase Diagram: It is a diagram to represent the phases, composition and mass fraction of…
Q: Consider a water-to-water counterflow heat exchanger with these specifications. Hot water enters at…
A: Given data:- Overall heat transfer coefficient ×Surface area (UA)=2200W/K ∆Tm=32.374 °C To…
Q: A drive shaft running at 2500 rpm has outer diameter of 60mm and inner diameter of 40mm. The…
A:
Q: Solve the problem below. Provide a clean solution. Label each points from A to E then draw the load,…
A: Given question is related to mechanics.
Q: Two identical giant flywheels are on 2 identical slopes at an angle alpha = 20 deg. One flywheel is…
A: Given: α=20d1=3 ftd2=5 ftW =8 lbsv = 7 ft/st=5 sec To find: Radius of gyration Distance between 2…
Q: A ship is sailing north at a speed of 12 knots. Knowing that the speed of the tide is 5 knots and…
A: Given data:- Speed of ship=12 knots.(north) The speed of the tide=5 knots (west) To find:- the…
Q: A compound bar is constructed from three bars 50 mm wide and 12 mm thick fastened together to form a…
A: This question is of Solid of mechanics, Here the bar is compound.
Q: Given a system that has an initial velocity 10 [m/s], at a position of x = 0 [m], determine the time…
A:
Q: For the entropy balance equation, the mechanism of entropy transfer includes____________…
A: According to the question we need to define entropy transfer.
Q: 14.43 Steel is carburized in a high-temperature process that depends on the transfer of carbon by…
A:
Q: A refrigeration system multi evaporators at different temperatures as shown in figure. The system…
A: Given:Refrigerant=R134aCondenser temperature, TC=34oCEvaporator 1 temperature, Te,1=-10oCEvaporator…
Q: derive an expression for fluid pressure at point A
A: Given:Specific weight of fluid in the tank=γSpecific weight of fluid in the tube=γ'
Q: Work Example 8.1 on page 390 of your textbook, but replacing the book values with the following…
A:
Q: In the figure below, the tank contains water and immiscible oil at 20°C. What is hin cm if ha= 18cm,…
A:
Q: 1. Consider an opaque horizontal plate that is well insulated on its backside. The irradiation on…
A:
Q: A row of long cylindrical power cables that are spaced 2 cm evenly apart is placed in parallel with…
A: Given data: s=2 cmD=1 cmThermal conductivity of the plate k=15 W/mkThickness of the plate, t=5…
Q: You are asked to determine the concentration of a diffusing gas at a given depth on a metal surface…
A:
Q: A -L/2- (x = 0, y = 0) (x=L, y=0) (x=0,² = 0) C -L/2 B
A:
Q: QUESTION 4 Analyze the truss and calculate all the forces acting on Joint B and H. Show your detail…
A:
Q: Match the corresponding formula from the right column to the description on the left. -S²₁ 1…
A: Introduction The concept of entropy comes from the section law of thermodynamics. The entropy…
Q: A certain gas has a molecular weight of 30.0, a critical temperature of 310 K, and a critical…
A: Given: M=30 kg/kmol Tcr=310K Pcr=4.5Mpa T=500 K P=15.0 MPa
Q: Estimate the power of the Complexe Desjardins fountain: the jet rises to about 20m and the pipe has…
A:
Q: Please explain how the moment of FAB and FAD were calculated in this picture. For example, I dont…
A:
Q: Question 3 The A hollow shaft with an outside diameter of 150 mm and an insid subjected to an axial…
A: Givendo=150mmdi=130mmP=75 kNTB=16 kNmTC=7 kNmσyeild=40MPa
Q: 6. A 12 lb. weight stretches a spring 2 feet. The mass-spring system is immersed in a medium…
A:
Q: Given that the PE at A is 20 kJ and KE at A is 5.0 kJ. What is the KE at B if the height at B is 2.0…
A: Potential energy at A, PE(A) = 20 kJ or 20000 J Kinetic energy at A, KE(A) = 5 kJ or 5000 J Height…
Q: The jet is flying at M = 1.3, where the absolute air pressure is 25 kPa. A shock is formed at the…
A: Given: upstream Mach number M1 = 1.3 upstream pressure P1 = 25 kPa To find: downstream A. Mach…
Q: a 5-mm-diamter capillary tube is used as a viscometer for oils. When the flow rate is 0.071 m3/h,…
A: As per guidelines we can answer only first question. Kindly post the remaining questions in another…
Q: The roller is pushed forward with a force of 200 N when the handle is at 45°. The friction…
A: To find: The angular acceleration. Given: The mass of the roller is m=80 kg. The radius of the…
Q: The ears of a rabbit can be thought of as two rectangular fins that dissipate heat. The dimensions…
A:
Q: The coefficient of kinetic friction between the 30-mm- diameter pin and the pulley is 0.25.…
A: (a) To find: The tension required to raise the load. Given: The radius of the pin is r=15 mm. The…
Q: 3.120 What is the convection mass transfer coefficient asso- ciated with fully developed atmospheric…
A: Given-Information:-Temperature, T = 27°C = 300 KMass, m = 0.04 kg/sDiameter, d = 50…
Q: 1000 lb $10⁰ P
A:
Q: Consider an AISI 304 stainless steel cylindrical rod with a diameter of 20 mm and a length of 100 mm…
A: According to question:- diameter of the rodd=20mmLength of the rodL=100mm=0.1mTemperature…
Q: In the given image, both fluids are at 20°C. The specific weight of water is 9790 N/m³. If surface…
A:
Q: A The low strength concrete floor slab is integrated with a wide-flange A-36 steel beam using shear…
A: Given Data The bending stress for the concrete is:σallowcon=10 Mpa The allowable bending stress for…
Q: The A-36 steel pipe is subjected to the axial loading of P-25 kN Y Part A 30 mm 40 mm Determine the…
A: Introduction When a load is applied, strain is produced; the amount depends on the material's…
Q: Datum dimension the isometric view
A: In isometric projection, the three edges of a solid right angle of an object are shown by means of…
The heat transfer from a 3 m diameter sphere to a 27 deg C air stream over a time interval of one hour is 4000 kJ. Estimate the surface temperature of the sphere if the heat transfer coefficient is 15 W/m^2K.
Step by step
Solved in 2 steps with 1 images
- The heat transfer coefficient for a gas flowing over a thin float plate 3-m long and 0.3-m wide varies with distance from the leading edge according to hc(x)=10x1/4Wm2K If the plate temperature is 170C and the gas temperature is 30C, calculate (a) the average heat transfer coefficient, (b) the rate of heat transfer between the plate and the gas, and (c) the local heat flux 2 m from the leading edge. Problem 1.185.7 The average Reynolds number for air passing in turbulent flow over a 2-m-long, flat plate is . Under these conditions, the average Nusselt number was found to be equal to 4150. Determine the average heat transfer coefficient for an oil having thermal properties similar to those in Appendix 2, Table 18, at at the same Reynolds number and flowing over the same plate.An electrical transmission line of 1.2-cm diameter carries a current of 200 amps and has a resistance of 310-4 ohm per meter of length. If the air around this line is at v, determine the surface temperature on a windy day, assuming a wind blows across the line at 33 km/h.
- Determine the rate of heat loss from the wall of a building resulting from a 16 km/h wind blowing parallel to its surface. The wall is 24 m long and 6 m high, its surface temperature is 27C, and the temperature of the ambient air is 4C.The heat transfer rate from hot air by convection at 100C flowing over one side of a flat plate with dimensions 0.1m0.5m is determined to be 125 W when the surface of the plate is kept at 30C. What is the average convection heat transfer coefficient between the plate and the air?3.10 A spherical shell satellite (3-m-OD, 1.25-cm-thick stainless steel walls) re-enters the atmosphere from outer space. If its original temperature is 38°C, the effective average temperature of the atmosphere is 1093°C, and the effective heat transfer coefficient is , estimate the temperature of the shell after reentry, assuming the time of reentry is 10 min and the interior of the shell is evacuated.
- The air-conditioning system in a Chevrolet van for use in desert climates is to be sized. The system is to maintain an interior temperature of 20C when the van travels at 100 km/h through dry air at 30C at night. If the top of the van is idealized as a flat plate 6 m long and 2 m wide and the sides as flat plates 3 m tall and 6 m long, estimate the rate at which heat must be removed from the interior to maintain the specifiedA spherical communications satellite, 2 m in diameter, is placed in orbit around the earth. The satellite generates 1000 W of internal power from a small nuclear generator. If the surface of the satellite has an emittance of 0.3, and is shaded from solar radiation by the earth, estimate its surface temperature.A food product with 73% moisture content in a 10 cm diameter can wants to be frozen. The density of the product is 970 kg / m³, the thermal conductivity is 1.2 W / (m K), and the initial freezing temperature is -1.75 ° C. After 15 hours in the freezing medium -25 ° C, the product temperature becomes -10 ° C. Estimate the convection heat transfer coefficient of the freezing medium. Assume the can as an infinite cylinder. h = Answer W / (m² K).
- BThe heat transfer from a 2-m-diameter sphere to a 25 °C air stream over a time interval of one hour is 3000 kJ. Estimate the surface temperature of the sphere if the heat transfer coefficient is 10 W/m²K.A food product with 73% moisture content in a 10 cm diameter can wants to be frozen. The density of the product is 970 kg / m³, the thermal conductivity is 1.2 W / (m K), and the initial freezing temperature is -2.25 ° C. After 15 hours in the freezing medium -35 ° C, the product temperature becomes -10 ° C. Estimate the convection heat transfer coefficient of the freezing medium. Assume the can as an infinite cylinder. h = .... W / (m² K).A food product with 80% moisture content in a 5 cm diameter can wants to be frozen. The density of the product is 1000 kg / m cubic, the thermal conductivity is 1.0 W / (m K), and the initial freezing temperature is -1.75 ° C. After 10 hours in -25 ° C freezing medium, the product temperature becomes -10 ° C. Estimate the convection heat transfer coefficient of the freezing medium. Assume the can as an infinite cylinder