The ceiling area of 100 square meters consists of four materials. The thermal insulation value of these materials from top to bottom is 1, 50, 0.6 and 0.45 square meters per watt per degree, respectively. If the outside temperature is O degrees and the internal temperature is 25 degrees, what is the speed Heat transfer through the wall?
Q: 3.) A steam power plant uses the ideal Reheat-Regenerative Rankine cycle where the steam enters the…
A:
Q: Determine the resultant of forces system shown in Figure below and locate it with respect to point…
A:
Q: .) Determine the resultant of forces system shown in Figure below and locate it with respect to…
A:
Q: 23. To secure grain refinement and reduce grain size, in heat treatment techniques is obtained at:…
A: Heat treatment processes are used for the alteration in the specific properties of the material.
Q: Applying Clausius inequality to determine the minimum heat rejected if (300000 W) heat supplied to…
A:
Q: M7
A: m=40kg/secTi=10CTo=50CTs=100CDt=25,,Lt=3mSL=ST=75mm To-Find:- a. Number of tubes b. Heat transferred…
Q: (B) Construct the analytic function ƒ(z) = u(x, y) + iv(x, y) of which the real part is: u(x, y) =…
A:
Q: Determine the weight in newton's of a woman whose weight in pounds is 130. Also, find her mass in…
A:
Q: Compute the moment of the 100-lb force about A, (a) by using the definition of the moment of a…
A: Compute the moment of the 100-lb force about A, (a) by using the definition of the moment of a…
Q: Determine the resultant of forces system shown in Figure below and locate it with respect to point…
A: given; lets take; force(F1)=120KN (downward)force(F2)=180KN…
Q: 29.Eiffel Tower made by a. Super alloys b. wrought iron c. Steel d. Stainless Steel e. cast iron 30.…
A: Given questions: 29. Eiffel tower is made by 30. In the deformation, when unload returns to normal…
Q: sk (1) Brayton cycle with regeneration operates with a pressure ratio of 7. The minimum and maximum…
A:
Q: 8. To relieve internal stress in heat treatment techniques is obtained at & Annealing Normalizing…
A:
Q: Determine the resultant of forces system shown in Figure below and locate it with respect to point…
A: Answer: ◆ The resultant of force system is 4669.05 kN acting upward at θx = 46.7357°. ◆ It's…
Q: A cylindrical specimen of steel having an original diameter of 12.8 mm (0.505 in.) is tensile tested…
A: Consider a specimen having initial cross-sectional and final cross-sectional area be A0 and Af…
Q: Determine the force in members ac,be,ce,ei & gh of truss shown in figure f i h b 3m 3m 4m g 4m G +…
A:
Q: Q.1 (20%) Find the resultant of two forces shown in Figure and its direction with X axis using Sine…
A:
Q: Q2/ Steam at 320 °C and 80 bar enter Nozzle with velocity 70 m/s and leaving by temperature is 100…
A: Given data: Conditions of steam at entry : 320°C and 80 bar with 70 m/sLeaving temperature = 100°CWe…
Q: 2- The need of turbocharging system is a) heat up combustion chamber c) speed up the intake air 3-…
A: Answers : Q2- (d) Increase oxygen molecules Q3-(b) DOH camshft
Q: Steam at 320 °C and 80 bar enter Nozzle with velocity 70 m/s and leaving by temperature is 100 °C,…
A: For solution refer below images.
Q: 26. In Classification of Alloys Structure "Interstitial" is considered one of the branches of…
A:
Q: Resistance-welding processes make use of the heat generated electrical resistance to achieve fusion…
A: Resistance-welding processes make use of the heat generated by electrical resistance to achieve…
Q: Su The curved member is symmetric and is subjected to a moment M. bending stresses, both tension and…
A:
Q: Explain briefly about: 1. Aerodynamic resistance 2. Gradient resistance 3. Rolling resistance
A: when a vehicle moves on the road surface then there are different types of resistance are…
Q: Compute the moment of the 100-lb force about A, (a) by using the definition of the moment of a…
A: Given that: Magnitude of the force = F = 100 lb It is acting at B at 60 o It is required to…
Q: Cable AB passes over the small ideal pulley C without a change in its tension. What length of cable…
A: Given: Force attached to cable AB=70 lb Hence tension in the string AB: →TAB=70 lb Because angle…
Q: 28. The metal is kept at the achieved temperature for some period of time. The time required depends…
A: Solution.jpg
Q: A) Figure (2) shows the velocity distribution for flow of water between two parallel plates.…
A:
Q: 04 T₂ A- A steam power plant operates on a simple ideal Rankine cycle. The steam enters the turbine…
A: Given:P1=5 MPaP2=10 KPax2=90%m=35 Kg/s
Q: Q5/A/ An empty cold room has a volume of 27 m², If the pressure inside is 1.2 bar and the…
A:
Q: 2,4) In a piston-plunger device, through a polytropic process, nitrogen is expanded with an n of…
A: Polytropic Process is very similar to Adiabatic process where governing equation of the gas is PVn=C…
Q: Q1/ Applying Clausius inequality to determine the minimum heat rejected if (300000 W) heat supplied…
A: Given:Qs=300000 WT1=300°C =573 KT2=20°C =293 K
Q: Find the moment of force about point A as shown in Figure? A 10 m B 90° 8 m 20 1000 KN C
A: GIVEN DATA- A FORCE SYSTEM SHOWN IN FIG WE HAVE TO FIND MOMENT ABOUT POINT A
Q: The x-coordinate of a particle in curvilinear motion is given by x = 5.3t3-5.1t where x is in feet…
A:
Q: Q4/ An electric power plant operating on the Carnot cycle puts heat into a river with a water…
A: Given data: TL=15°Cη=40%W=20 MW Need to determine the maximum temperature and amount of heat added…
Q: Q.2 Choose the correct answer 1- A collision avoidance system uses .......... to detect a vehicle or…
A:
Q: By using the Navier-Stokes equation for a flow of a Newtonian viscous fluid in a rectangular…
A:
Q: A cylinder fitted with a frictionless piston contained an ideal gas, with a volume of 23 m³, a…
A:
Q: An ideal reheat regenerative Rankine cycle with one open feedwater heater. The boiler and condenser…
A: Since, part (c) is different question from part (a) and (b). So, as per the guideline, I can solve…
Q: Determine the reactions in C on member ACD as shown in figure? 800 KN 5 m 6 m 8m 600 KN 3 m
A: For solution refer below images.
Q: Determine the reactions in C on member ACD as shown in figure? 800 KN 5m 4m 6 m 8m 600 KN 3 m
A: For solution refer below images.
Q: A closed vertical cylindrical vessel, 1.80m in diameter, 3m high is 8/10 full of oil (SG=0.85) and…
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: The bar of the figure of length L is supported by rigid supports. Said bar undergoes a non-uniform…
A:
Q: B- Determine the heat transfer (in kJ) necessary to increase the pressure of 70 percent quality…
A: Given Pressure, P1 = 200 kPa P2 = 800 kPa Volume, V = 2 m3 Find Heat…
Q: B-Prove the Clausius equality for reversible and irreversible cycles
A:
Q: B- Determine the heat transfer (in kJ) necessary to increase the pressure of 70 percent quality…
A: Given Pressure, P1 = 200 kPa P2 = 800 kPa Volume, V = 2 m3 Find Heat…
Q: A mass of 40kg is attached to the free end of a iron cantilever beam of length 1000mm having a…
A:
Q: Determine the resultant of forces system shown in Figure below and locate it with respect to point…
A: Given: There are total three forces. Let we assume: →F1=400 KN j^→F2=-800 KN I^ Because angle made…
Q: Sx³dx
A: To determine the integration of x9.
Q: 1. (Choose incorrect sentences) a. High carbon steel (ferrous alloys) b. Brass (non ferrous alloys)…
A: Given Strength of material To find Verify the statement
Step by step
Solved in 2 steps with 1 images
- Show that the rate of heat conduction per unit length through a long, hollow cylinder of inner radius ri and outer radius ro, made of a material whose thermal conductivity varies linearly with temperature, is given by qkL=TiTo(rori)/kmA where Ti = temperature at the inner surface To = temperature at the outer surface A=2(rori)/ln(ro/ri)km=ko[1+k(Ti+To)/2]L=lenthofcyclinderThe compartment below is used as a freezer of refrigerator compartment. Inner wall is at -10 C and outer wall is at 20 C. Insulator with a thermal conductivity of 0.040 W/(mK) is used to prevent the heat losses from the compartment. The shape is in square form with a side of 1.3 m and unit width into the page. Determine the amount of the heat load if the thickness of the insulator is 2 cm? *GChoose the right answer 1. The temperature profile for steady hest conduction through a plane wall of constant thermal conductivity is a. logarithmic b. parabolic 2. A brick wall (k-0.75 W/mK ) transmits $02 of heat loss through another wall (k-0.25 W/mK, x-100 mm). If the temperature difference across both walls is the same, the thickness of the brick wall would be a.150 mm c. linear 6T b. 240 mm c. 300 mm d. 375 mm 3. The maximum temperature at the center of the solid sphere of radius R having heat generation q (W/m') is given by g'R +9R b. T, + 4k T+9R 6k d. T+9R 8k a. 2k C. 4. The internal thermal resistance of a solid can be ignored if the Biot number is less than a. 1 b. 0.5 c. 0.1 d. Fourier number 5. The ratio of heat transfer of a fin to the heat transfer without fin is referred to as a. fin resistance b. fin efficieney efin effectiveness d. fin conductance.
- The compartment below is used as a freezer of refrigerator compartment. Inner wall is at -8 C and outer wall is at 27 C. Insulator is used to prevent the heat losses from the compartment. The shape is in square form with a side of 1.1 m and unit width into the page. Determine the conductivity of the insulator if the compartment heat load is 250 W? Take the thickness of the insulator as 1.5 cm* *inner wall outer wall insulating material 0.045 W/(mk) 0.035 W/(mK) 0.097 W/(mk) none 0.024 W/(mK)The compartment below is used as a freezer of refrigerator compartment. Inner wall is at -10 C and outer wall is at 20 C. Insulator with a thermal conductivity of 0.040 W/(mK) is used to prevent the heat losses from the compartment. The shape is in square form with a side of 1.3 m and unit width into the page. Determine the amount of the heat load if the thickness of the insulator is 2 cm? * a)700 W b)312 W c)78 W d)none e)500 W5- Determine the rate of heat transfer by conduction per unit area, by means of conduction for a furnace wall made of fire clay. Furnace wall thickness is 6" or half a foot. Thermal conductivity of the furnace wall clay is 0.3 W/m-K. The furnace wall temperature can be taken to be same as furnace operating temperature which is 650°C and temperature of the outer wall of the furnace is 150°C.
- The construction of a wall is made of different materials as shown below.Happened. The room temperature is 21 °, the convection coefficient of the inner surface is 6.5 W/m2 ° and the externalThe convection coefficient of the surface is given as 17 W/m2°. The wall is 2,135 m high andIt is 3,965 m wide. Material A is located at a height of 0.915 m from the ground. outside temperatureIt is given as -6 °. The heat transfer coefficients of the materials and the dimensions are on the figure.specified. Find the heat transferred from the wall accordingly.The compartment below is used as a freezer of refrigerator compartment. Inner wall is at -15 C and outer wall is at 25 C. Insulator with a thermal conductivity of 0.035 W/(mK) is used to prevent the heat losses from the compartment. The shape is in square form with a side of 1.2 m and unit width into the page. Determine the thickness of the insulator if the compartment heat load is 700 W? * inner wall outer wall insulating material 5 cm O 9.6 mm 4.2 cm noneThe compartment below is used as a freezer of refrigerator compartment. Inner wall is at -15 C and outer wall is at 25 C. Insulator with a thermal conductivity of 0.035 W/(mK) is used to prevent the heat losses from the compartment. The shape is in square form with a side of 1.2 m and unit width into the page. Determine the thickness of the insulator if the compartment heat load is 700 W? * inner wall outer wall insulating material
- Ols क 1-3 A truncated cone 30 cm high is constructed of aluminum. The diameter at the top is 7.5 cm, and the diameter at the bottom is 12.5 cm. The lower surface is maintained at 93°C; the upper surface, at 540°C. The other surface is insulated. Assuming one- dimenșional heat flow, what is the rate of heat transfer in watts?A furnace wall is constructed of a firebrick that is 6 inches thick. The temperature of the inside of the wall is 1300°F, and the temperature of the outside of the wall is 175°F. If the mean thermal conductivity under these conditions is 0.17 BTU/hr-ft-°F. What is the rate of heat loss through 10 square feet of wall surface?FIll in the blanks: A slab 0.25 m thick with thermal conductivity of 45 W/m-K receives heat from a furnace at 500 K both by convection and radiation. The convection coefficient has a value of 50 W/m²- K. The surface temperature is 400 K on this side. The heat is transferred to surroundings at T, both by convection and radiation. The convection coefficient on this side is 60 W/m2-K. Determine the surrounding temperature. K.