Q10/ A large slab at 350°C suddenly has its surface exposed to convection 30°C with h = 80 W/m²K. Determine the temperatures at a depth of 40 m and at the surface after 300 seconds, given thermal diffusivity 5.6
Q: Draw the schematic diagram for regenerative vapour power cycle with 2 steam bleds. Represent the com...
A:
Q: Determine the force that hydraulic piston DB exerts on boom ABC, as well as the force exerted on the...
A:
Q: Explain with neat sketch, “Galvanizing” heat treatment process
A: As per Given question We have explain galvanizing heat treatment process
Q: (b) Find the value of ? in factored fo 4. [3/ (x- 4)] = [(3x + 36)/ ?] 5. [4/(2x + 5)] = [? / (2x² -...
A: Hi and thank you for the questions. Since you have asked multiple questions, as per our honor code w...
Q: Find the value of heat, efficiency rate, work in 68 spin and power in 0.87 second if an engine relea...
A: Givenn=68 spint=0.87sQ=3760J/spinW=547J/spinPart 1W=-200J -ve for work done on the systemQ=100J +ve ...
Q: Pressure control valves determine maximum system pressure True False
A:
Q: An ideal Otto engine, operating on the hot-air standard with k=1.34, has a compression ratio of 5. A...
A:
Q: A pumped fluid distribution system is being designed to deliver 400 gal/min of water to a cooling sy...
A: Write the given data. Q=400 gal/min
Q: For the system of connected bodies shown in the figure, the initial angular velocity of the compound...
A: Find the distance travelled by the weight A before coming to rest.
Q: Write shear & moment equations as function of x and draw shear & moment diagrams for the beam given ...
A:
Q: The uniform dresser has a weight of 91 lb and rests on a tile floor for which 4 = 0.25 If the man pu...
A:
Q: Build the following part. Report the volume in mm^3. Assume all dimensions are in mm. A=52 B=19 Your...
A: Given : To find : Volume of the body
Q: A-5.16 An 8000-lb T-38 is in a steady climb passing 10,000 ft at 0.5 Mach. Answer the following ques...
A: In air transportation, the rate of climb (RoC) is an airplane's upward speed, that is the positive...
Q: a tensile test is conducted for a metal wire which has a diameter of 4.7 the maximum recorded force ...
A:
Q: 15m 10 4.5m v = 0.25m/s NOT TO SCALE
A:
Q: Ipaliwanang ang Geothermal Energy At Geothermal Power Plant (Tagalog)
A: given; Geothermal Energy At Geothermal Power Plant (Tagalog)
Q: A steel cylindrical air receiver with 6.0 feet diameter and pressure load of 220 psi., design stress...
A: Answer: The bursting steam pressure of this air receiver is 1711.11 psi.
Q: Find the mass of water, in kg, that can be cooled from 24 0C to -80C from a 10 tons refrigeration sy...
A: We are authorized to answer one question at a time since you have not mentioned which question you a...
Q: a nozzle of 3 in² cross sectional area is discharging to the atmosphere and is located in the side o...
A: GivenA=3in2=312×12=0.020833 ft2H=6ft
Q: Define the tools that must have during the Grinding Machine Operation
A: To find tools that must have during the Grinding Machine Operation.
Q: [4/ (2x + 5)] = [? / (2x² – x - 15)]
A:
Q: A wheel of mass mg = 5 kg, outer radius ro = 0.6m, r; = 0.3m, and mass moment of inertia lg = (mg*r....
A:
Q: Compute the area of the shaded región. f(x) =x 24 - In 5 12 - In 13 - In O 12- In 5
A:
Q: Does line AB intersect with parallel lines YZ and WX? Complete all views
A:
Q: An aircraft is moving horizontally on the runway for take-off. It is powered by a sing engine that h...
A: All forces occur in pairs, according to Newton's third rule of motion in classical mechanics, such...
Q: Consider a propeller-type wind turbine with following specification Air density = 1.2 Kg/m³ Interfer...
A: Givenρ=1.2kg/m3a=0.2D=80mV=10m/s
Q: How much horsepower is delivered by a block brake having a drum 120 mm in diameter and a 400 mm brak...
A:
Q: 20. Consider a tank filled with steam at enthalpy h,. A spray valve is opened al- lowing water at a ...
A: Write the energy change in spray water. E˙sp=m˙sphf-hsp ...... (1)
Q: D. How many Btu need to be added to change 5 lb of ice at 30°F to steam at 215°F? Refer to tables fo...
A:
Q: A cast iron rod of length 1-8 m rotates with a con- stant angular speed about a vertical axis throug...
A:
Q: A concentric counterflow heat exchanger is used to cool oil by water. The oil flow rate is 0.1 kg/s ...
A:
Q: In In an actual Rankine cycle, steam first enters the turbine at 10 MPa and 400C. It expands to a pr...
A:
Q: 3. Determinar la coordenada ỹ del centroide C de las siguientes figuras respecto al eje x: 50 mm 50 ...
A:
Q: The 200 N lamp shown above is supported by two steel rods connected by a ring at A. Determine which ...
A: Given:Weight of the lamp, W=200 Nθ=60odAB=12 mmdAC=10 mm
Q: 2. The piece of plastic is originally rectangular. Determine, a. the shear strain Yy at corners A an...
A:
Q: A bearing piece in the form of half of a hollow cylinder of 60 mm ID, 90 mm OD and 100 mm long is to...
A:
Q: Enumerate and briefly explain the sources of aircraft noise.
A:
Q: A bag of wheat weight 300 kg .To what height should it be raised so that potential energy is 9600 J?...
A: Given data : Mass of the bag = m Potential energy = P•E Acceleratio...
Q: Example 5 The total mass, wing area, cruising speed, and air resistance power of a small aircraft ar...
A: Givenm=1800kgA=42m2V=280 km/hr =280×1033600=77.78m/sPa=190kWH=4000m
Q: An aircraft is moving horizontally on the runway for take-off. It is powered by a singl engine that ...
A: All forces occur in pairs, according to Newton's third rule of motion in classical mechanics, such...
Q: Pls explain clear and derailed Define: Internal Combustion Engine Compare and contrast. 1. Otto Cy...
A:
Q: As you increase the carbon content of steels from 0.1% to 1.0% you would expect: strength to increas...
A:
Q: Consider the following system: 6+ A sin(0) = 0, where A is a constant. Explore this system! Explain ...
A: Write the given expression. θ¨+λsinθ=0
Q: A car is traveling from point A, B, C, D and E The car started from Point A with a speed of 5.5 m/s ...
A: Given dataAt point A, velocity=vA= 5.5 m/sTime taken for car to reach point B from point A = 60 sVel...
Q: 47. Table Saw The blade on a table saw rotates at 3450 revolutions per minute. How much faster (in f...
A: GivenN=3450rpmd1=12in=1ftd2=10in=0.833ft
Q: Describe about Pressure compensated valve with construction and working in detail.
A: given; Describe about Pressure compensated valve with construction and working in detail.
Q: A 60 kg spy is trapped in an underground bunker and the only way she can get out is by climbing up a...
A:
Q: 3/ Design the hydraulic circuit for any one hydraulic system application with working and neat circu...
A:
Q: A hydraulically actuated horizontal slider mechanism is illustrated in figure 2 where the ion of pis...
A:
Q: In your own words, explain why the internal combustion engine made by Etienne Lenoir is the most sig...
A: Etienne Lenoir
Step by step
Solved in 2 steps with 2 images
- 1.29 A spherical interplanetary probe with a 30-cm diameter contains electronic equipment that dissipates 100 W. If the probe surface has an emissivity of 0.8, what is its surface temperature in outer space? State your assumptions in the calculations.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?Steel is sequentially heated and cooled to relieve stresses and to make it less brittle. Consider a 100 mm thick plate that is initially at a uniform temperature of 300 °C and is heated on both sides in a gas fired furnace for which To 700 °C and h=500 W/m². K. How long will it take the coldest spot to reach 550 °C in the plate? Materials properties are given in this graph. == = Steel plate: 11 T₁ = 300°C T(0,t) = 550°C L = 50 mm Combustion gases p=7800 kg/m3 Cp = 500 J/kg-K k = 45 W/m-K T∞ = 700°C h = 500 W/m²-K
- A 0.1 m diameter long rod at 20 °C is to be heated by a hot fluid of 200 °C. How long does it take the rod temperature to reach 70% of the fluid temperature if the followings are given? Convection coefficient h = 10 W/m2K Thermal conductivity k = 20 W/mK Thermal diffusivity a = 10-5 m2/sFind the temperature profile of the rectangular plate 4m x 4m, whose temperature at the side are given below: Take delx= del y= 1 m. 100 C 75 C OC 50 CA thermometric well is placed in a pipe having diameter of 55 mm. Pipe wall temperature is 100°C and heat transfer coefficient inside the pipe is 300 W/m² K. Thickness of thermowell is 1.2 mm and its length is 50 mm. Thermal conductivity of thermowell material. Is 30 W/mK. If the temperature of the gas flowing through the pipe is recorded by thermometer as 200°C, determine the true temperature of gas. If the error in gas temperature is to be reduced by 80% by increasing the length of thermowell, determine the new length of thermowell. Draw a sketch of this thermowell. Take perimeter to area ratio for thermowell as 1/T (T= thickness).
- It is designed in such a way that the internal temperature of a commercial heat treatment furnace can reach up to 165 oC. All surfaces of the furnace consist of firebrick (10 cm), insulation material and sheet metal (3mm) from the inside out. Given that the outdoor temperature is 22 oC, the outer sheet will be allowed to go up to 35 oC, which is a temperature that will not disturb in contact with hands. In this case, determine the insulation material thickness to be used. The thermal conductivity coefficient of the insulation material is insulation 0.066 W / m oC, 60 W / m oC for sheet metal and 115 W / m oC for firebrick. Indoor heat transfer coefficient will be accepted as 25 W / m2 oC and 12 W / m2 oC for outdoor environment.3) The two sides of a large plan wall are maintained at constant temperatures of T₁ = 120°C and T₂ = 50°C, respectively. If you know that the wall thickness L = 0.2 m, thermal conductivity k = 1.2 W/m.K, and surface area A= 15 m². Determine (a) the variation of temperature within the wall and the value of temperature at x = 0.1 m and (b) the rate of heat conduction through the wall under steady conditions. -02-1A:Find the amount of heat transferred through an iron fin of thickness 5 mm, length 10 cm and width 100 cm. Also determine the temperature difference e at the tip of the fin at: 1- adiabatic tip, 2-heat convection at the tip. Assuming the atmospheric temperature of 28°C K=50 w/mK, h=10 w/m’K, O,=80°C. B-Why is the dimensional heat flow assumption important in the analysis of fins problems? C- Why are the annular fins more efficiency than others?.
- b. Consider a large plane wall of thickness L = 0.25 m, thermal conductivity k= 0.77 W/m-K, and surface area A = 15 m. The outside wall is subjected to convection with T1 = 100 °C and h, = 5 W/m? · K and the inside wall is maintained at constant temperatures of T2 = 50 °C, respectively, as shown in Fig. 2. Determine: i. express the differential equation and the boundary conditions for steady one-dimensional heat conduction through the wall, and obtain a relation for the variation of temperature in the wall by solving the differentiai equation 11. -T2The handle of a saucepan, 30 cm long and 2 cm in diameter, is subjected to 100 degree Celsius temperature during a certain cooking operation. The average unit surface conductance over the handle surface is 7.35 W/m2 degree in the kitchen air at 24 degree Celsius. The cook is likely to grasp the last 10 cm of the handle and hence the temperature in this region should not exceed 38 degree Celsius. What should be the thermal conductivity of the handle material to accomplish it? The handle may be treated as a fin * .insulated at the tipDuring daytime, the outside air temperature is measured at Ta = 35 °C. A house with an inside temperature of Tin = 20 °C is separated from the outside by a brick wall as shown in Figure 1. i Briefly discuss what will happen in terms of heat transfer process and the mode of heat transfer involved. ii. Identify the parameters that affect the rate of heat transfer in this case T. = T = 35°C 20°C Brick wall