what is the heat received per unit area,
Q: Compute the maximum stress due to bending in a round rod 20 mm in diameter if it is subjected to a…
A: The diameter of the round rod, (d)= 20 mmThe bending moment on the rod, (M)= 120 N.mDetermine the…
Q: Explain the deconvolution of the principal stress state into the hydrostatic and deviatoric stress…
A:
Q: 8.20 Water is the working fluid in an ideal Rankine cycle with reheat. Superheated vapor enters the…
A:
Q: Part B please
A: In this question, it is asking about the solution of part B only so we will provide the solution for…
Q: What is the Miller index for the plane shown below in a hexagonal close-packed crystal (this…
A: Miller index is a set of numbers that is used to denote or specify the lattice plane and the plane…
Q: Consider incompressible, frictionless flow of water in a vertical pipe of constant diameter. The…
A:
Q: 2. A cylindrical tank 5 ft high has a constant diameter of 4 ft is full of water. The tank has a…
A: The height of the cylindrical tank, (H)=5 ftThe diameter of the tank, (D)=4 ftThe cross-sectional…
Q: 9-70. Determine the location c and cone.
A: A centroid is nothing but the center of the mass of a uniform density of objects.
Q: An adiabatic turbine receives 2.0 kg/s of superheated steam at 2.5 MPa, and 700°C. The discharge at…
A:
Q: A plate bounded by the x-axis, the y-axis and the curvex = cos(y) is placed in water such that its…
A: To Find:the exact value of the hydrostatic force on the plate.
Q: Using a mathematical solution, determine the reactions at A and B if the lamp has a mass of 20 kg.…
A:
Q: A steel flywheel 25 mm thick with an outer diameter of 1 m and an inner di- ameter of 200 mm is…
A: Given:-Outer diameter = 1ma= outer radius = 1/2 = 0.5 minner diameter = 200mm = 0.2 mb = inner…
Q: 2)Determine the shear force V(x) and moment M(x) as functions of x by integrating for the system…
A: Given:the length of the beam is the uniformly varying load is
Q: Question 1 A body of mass m is supported by ropes!!! as the picture shows. Find the tensions T1, T2…
A:
Q: The smooth surface f the vertical cam is defined in part by the curve r = (0.2 cos 0+0.3) m. (Figure…
A: Write the given data.
Q: Q2. A car moves at 30 m/s as shown. The radius of the curve is 40 m. Upon entering the curve, the…
A:
Q: An air-conditioning system operates at a total pressure of 1 atm and consists of a heating section…
A: The inlet temperature of air is The inlet relative humidity is .The flow rate is .The temperature of…
Q: Question 23 Calculate planar density for (100) plane for FCC. O 012/R² O 0.18/R² O 0.25/R² O 0.35/R²
A:
Q: Consider a cruise control system shown in Figure 1. Where f is the engine force, v is the velocity,…
A: Given the figure f= the engine force, v= the velocity,fb = the friction force, and fb =…
Q: Build the pneumatic circuit in the following pneumatic sequence using the cascade method: [A- B-]…
A: To build the pneumatic circuit for the given sequence using the cascade method, we need to create a…
Q: Consider a gas turbine power plant operating on an ideal Brayton cycle which has a pressure ratio of…
A: Here we will apply the thermal efficiency formula for cold air assumption
Q: A 2 kg object is located relative to an axis that passes through the origin by the following…
A:
Q: A component used in a manufacturing facility is ordered from an outside supplier. Estimated demand…
A: To Find:the lot sizes using the EOQ lot sizing policy.the lot sizes using the Silver–Meal…
Q: LEASE PLEASE HELP SOLVE THIS, A swimming pool is 30 ft wide and 60 ft long and its bottom is an…
A:
Q: Heat in the amount of 84kJ is transferred directly from a hot reservoir at 963 °C to a cold…
A:
Q: Explain the production process of fibreglass pre-preg
A: Selection of MaterialsFiber TreatmentResin FormulationImpregnationPartial Curing (B-Stage)Cutting…
Q: Question 3 The blocks m1 and m2 of 20 kg and 60 kg, respectively, are joined by a rope of negligible…
A: Given:The mass of block 1 is the mass of block 2 is The angle at 1 is The angle at 2 is The…
Q: suppose that an unsaturated air mass is rising and cooling at the dry adiabatic lapse rate found in…
A:
Q: A force of 4 lb is applied to the handle of the toggle clamp. Determine the normal force F that the…
A:
Q: **** A wood beam carries a bending moment of 15 500 lb-in. It has a rectangular cross- section of…
A:
Q: 8.5 Adiabatic Throttle As part of a cooling cycle, CO2 is throttled from 20°C, 7 MPa to 2.5 MPa.…
A: The initial temperature is The initial pressure is .The final pressure is The process is adiabatic…
Q: Steam in a reheat Rankine cycle enters the first-stage turbine at 8 MPa and 450°C. The steam leaves…
A: Given:To find:a. Draw this cycle on a T-s diagram.b. Calculate the isentropic efficiencies of the…
Q: I want to know how to get plots like in the image in MATLAB. I have the following code. With the…
A:
Q: A open tank 5 m, long, 2 m deep and 3 m wide contains oil of relative density. 0.9 depth of 0.9 m if…
A: Given ,Dimensions of tank Length = 5mBreadth = 3mDepth = 2mTank contains oil of relative density 0.9…
Q: Question 1: Saturated steam enters a converging-diverging nozzle at 1.75 MPa, 10 percent moisture,…
A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…
Q: For the circuit shown, which of the following is true? Cylinder 1 Cylinder 2 Cylinder 2 can't extend…
A: A hydraulic circuit is a device that moves liquid via a network of separate components. This…
Q: A cubical furnace 0.5m x 0.5m x 0.5m on the inside is constructed of fire brick(k = 1.04W/mK) with…
A:
Q: nout slipping under ing constant k, is un G after the center
A: The number of revolutions is obtained as follows-
Q: 9-38. Determine the distance y to the center of mass of the cone. The density of the material varies…
A:
Q: The velocity of water is 1.2 m/s. The minor losses due to these bends are equivalent to a pressure…
A: Velocity of water V = 1.2 m/s
Q: nd the diameter and the number of teeth on both gears. plution:
A: Given data:Velocity ratio (VR)=5:1Centre distance (C) = 12inPitch (Pd) = 10
Q: Using the method of Joints. Find the force in each frame member.
A: Given data is
Q: Determine the force in member AE of the loaded truss. The force is positive if in tension, negative…
A: Given,A loaded truss in which a load of 4.2 KN acts at B and a load of 2.3 KN acts at C.To Find -…
Q: A B с OIL WATER 1.0M I 0.5M In the tank open to the atm. shown in the figure below, there is on oil…
A:
Q: In a rural community nestled in the heart of an indigenous reserve, a group of curious and…
A:
Q: Statics with Applications homework problem. Find the forces in the following members using any…
A: Statics with Applications homework problem.Find the forces in the following members using any…
Q: The plug has a diameter of 30 mm and fits inside a rigid sleeve with an inner diameter of 32 mm.…
A: To find:Determine the axial tension that must be applied to the top and bottom of the sleeve to…
Q: Energy Example A box of mass 15 kg is released from rest on an inclined surface with a restraining…
A:
Q: 1. A schedule-40 pipe necks down from 24 in at point A to 12 in at point B. 8 ft³/sec of 60°F water…
A: The diameter at point A is .The diameter at point B is .The flow rate of water is .The pressure head…
Q: Calculate the stiffness matrix for the Q8 element shown below. Make use of the shape functions in…
A:
The walls of a refrigerator are typically constructed with two metal panels enclosing an insulation layer. Consider an insulation layer made of fiberglass (k = 0.046 W/m°C) with a thickness of 50 mm, placed between two metal sheets (k = 60 W/m°C), each 3 mm thick. If the wall separates cold air at 4 °C from ambient air at 25 °C, what is the heat received per unit area, considering internal and external convective coefficients equal to 5 W/m²°C?
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 11 images
- 1.1 On a cold winter day, the outer surface of a 0.2-m-thick concrete wall of a warehouse is exposed to temperature of –5°C, while the inner surface is kept at 20°C. The thermal conductivity of the concrete is 1.2 W/m K. Determine the heat loss through the wall, which is 10-m long and 3-m high. Problem 1.1How many inches of insulation are required to insulate a ceiling such that the surface temperature of the ceiling facing the living area is within 2°C of the room air temperature? Assume a heat transfer coefficient on both sides of the ceiling of 2.84 W/(m2 • K) and a thermal conductivity of 0.0346 W/(m . K) for the insulation. The ceiling is 1.27 cm thick plasterboard with a thermal conductivity of 0.433 W/(m . K). Room temperature is 20°C and attic temperature is 49°C.A composite wall layer consists of layer A covered by layer B. The thermal resistance of layer A is 0.75 °C/W and the thermal resistance of layer B is 2.50 °C/W. The exposed surface of layer A is at a temperature of 60°C. If the heat transfer per unit area across the composite wall is 30 W/m?, what is the temperature at the interface between layer A and layer B? Express your answer in °C.
- Question 6 A steel pipe (k = 48 W/m-K) of a heating system carries wet steam at 120 °C. The inner and outer diameters of the pipe are 15 cm and 16 cm respectively. The pipe is insulated on the outside with rockwool insulation (k = 0.05 W/m K) of thickness 8 cm. The ambient air temperature is 32 °C. The outside heat transfer coefficient is 20 W/m2-K. The thermal resistance between the inner pipe surface and the steam is negligible. Calculate the rate of heat flow (in W) from the steam to the ambient over a 5 m length of pipe. Round your answer to 2 decimal places. Add your answer Follow-up question to Question 6, calculate the temperature (in °C) of the outer surface of the insulation. Round your answer to 2 decimal places. Add your answer Follow-up question to Question 6, calculate the rate of condensation of steam (in kg/hr) over the 5-m lenzth of pipe if the latent heat of steam is 2200 k/kg. Rc und your answer to 2 decimal places. Add your answerA 3 inch schedule 40 pipe is covered with two layers of insulations. The inner layer (k1 = 0.050) is 2 inches thick and the outer layer (k2 = 0.037) is 1(1/4) inches thick. Calculate the heat loss, in Btu/hr per unit length, if the outer surface temperature of the pipe is 670°F and the outer surface temperature of the outer layer of insulation is 100°F.) The wall of a refrigerator is constructed of fiberglass insulation (k =0.035 W/m °C) sandwiched between two layers of 1-mm-thick sheet metal (k =15.1 W/m °C). The refrigerated space is maintained at 3°C, and the average heat transfer coefficients at the inner and outer surfaces of the wall are 4 W/m2 °C and 9 W/m2 °C, respectively. The kitchen temperature averages 25°C. It is observed that 2. condensation occurs on the outer surfaces of the refrigerator when the temperature of the outer surface drops to 20°C. (a). Sketch the thermal circuit (b) Determine the minimum thickness of fiberglass insulation that needs to be used in the wall in order to avoid condensation on the outer surfaces.
- A transparent film will be glued onto an upper surface of a solid plate within a heated chamber. For common gluing, the temperature between the glue, a film and the solid board must be kept at 70 °C. The transparent film has a thickness of 1 mm and thermal conductivity 0.05 W/mK, while the solid board is 13 mm thick. thickness and thermal conductivity of 1.2 W / mK. Inside the climate chamber, the convection heat transfer coefficient is 70 W/m²K. The bottom surface of the solid plate is kept at 52 °C, determines the temperature inside the heated chamber and the temperature of the surface of the transparent film. Assume negligible thermal contact resistance.The exterior wall of a house is composed of a 20 cm thick layer of ordinary brick (conductivity 0.72 W/m K) and a 2.5 cm layer of plaster (conductivity 0.17 W/m K ) on each side (two layers in total). Other purely conductive resistances can be neglected, such as the layer of paint on both sides of the wall. Assume the outer face of the wall is at 35 °C and the inner face is at 20 °C and fill in the gaps. The magnitude of the heat flux through the wall corresponds to the _________ W/m2 and is perpendicular to the wall ________________(fill in with "outside-in" or "inside-out") of the environment. If the wall has a total area of 300m2, the heat transfer rate corresponds to ___________________Steel pipe (outer diameter 100 mm) is covered with two layers of insulation. The inner layer, 40 mm thick, has a thermal conductivity of 0.07 W / (m K). The outer layer, 20 mm thick, has a thermal conductivity of 0.15 W / (m K). Pipes are used to delivering steam with a pressure of 600 kPa. The temperature on the outer insulation surface is 24 ° C. If the pipe is 10 m long, determine the following: (assuming that the conduction heat transfer resistance of the steel pipe and the vapor convection resistance are negligible). a. Hourly heat loss ... (kj / hr)b. temperature between insulation layers ... (° C.)
- A container has a 4 mm thick metal wall and is lined insider with a 1.5 mm-thick plastic. The inside temperature is 80oC and the outside ambient temperature is 25oC. When ambient air flow is high, heat loss on the outside is a combined convection and radiation and the overall coefficient is 50 W/m^2·K. Thermal resistance inside is negligible. Thermal conductivity of the metal is 60 W/m·K and that of the plastic is 0.08 W/m·K. "Wind chill temperature" is defined as the air temperature under calm conditions with the same heat loss rates. 1)Calculate the heat loss rate. 2) What is the "wind chill" temperature for the above scenario if the outside combined coefficient is 20 W/m K when the wind is calmStainless steel pipes with a thermal conductivity of 17 W/ (m° C) are used to transport hot oil. The temperature inside the tube is 130 ° C. The inner diameter of the pipe is 8 cm and the thickness of the pipe wall is 2 cm. The pipe is then insulated with 4 cm thick insulation with a thermal conductivity of 0.035 W / (m° C). The ambient temperature of the pipe is 25 ° C. Calculate the temperature between the steel and the insulation if we assume a steady state. A picture of the pipe can be seen below.Steel pipe (outer diameter 100 mm) is covered with two layers of insulation. The inner layer, 40 mm thick, has a thermal conductivity of 0.07 W / (m K). The outer layer, 20 mm thick, has a thermal conductivity of 0.15 W / (m K). Pipes are used to deliver steam with a pressure of 700 kPa. The temperature on the outer insulation surface is 24 ° C. If the pipe is 12 m long, determine the following: (assuming that the conduction heat transfer resistance of the steel pipe and the vapor convection resistance are negligible). a. Heat loss per hour. = Answer kJ / hour. b. Temperature between insulation layers. = Answer ° C.