A furnace is required to sinter powder-metal parts. It operates continuously at 650 °C while the parts are fed through on a moving belt. You are asked to select a material for furnace insulation to minimize heat loss and thus to make the furnace as energy-efficient as possible. For reasons of space the insulation is limited to a maximum thickness of x = 0.2 m. (a) List the function, constraints, objective and free variable. (b) Derive a material index for selecting the material for the insulation.
Q: In a power plant operating with water and steam, the following measurements and observations were…
A: According to the given data Pressure =P=150 kPa Enthalpy =h =1580.115 (kJ/kg) we need to find The…
Q: A bar having the cross section shown has been formed by securely bonding brass and aluminum stock.…
A:
Q: Q2: A: For the tanks-system shown below, write the equations (only) of the flow in each tank. Assume…
A: Given: For tank 1: Incoming flow rate→Q1i=5 gal/min Outgoing flow rate→Q1o=2+3=5 gal/min…
Q: A cylinder with a diameter D, floats upright in a liquid as shown in Figure Q4. When the cylinder is…
A: Given:ω=fD,m,γFind:e The resulting pi term using the MLT system.f The relation between the frequency…
Q: The aircraft A with radar detection equipment is flying horizontally at an altitude of 12.2 km and…
A:
Q: container will break when the gauge pressure within it reaches 520 kPa. It is attached to the lower…
A:
Q: A steel frame is supported by 3 guy wires as shown. Cable CD exerts a tensile force of magnitude 1.2…
A:
Q: The young tree, originally bent, has been brought into the vertical position by adjusting the three…
A: Given the tensions in wires and dimensions. Required: Resultant reaction force and moment vectors
Q: To maintain a dwelling steadily at 68°F on a day when the outside temperature is 30°F, heating must…
A: (a) To find: The electrical power required. Given: The temperature of the hot reservoir is…
Q: 2.133 The end of the coaxial cable AE is attached to the pole AB, which is strengthened by the guy…
A:
Q: Q₁: Find the heat transfer rate by adding straight fins of rectangular cross section of length 50 mm…
A:
Q: Object A is travelling at 2.00m/s in a direction 10.0°Sw. Object B is travelling in a direction…
A:
Q: Two hard rubber blocks are used in an anti-vibration mount to support a small machine as -140 lb…
A: According to the given data P=140lb δ=0.23 in a=0.50im b=0.95in and c=2.70in We need to find…
Q: In the following application, a temperature switch controls a heating contactor and a flow switch is…
A: Signal devices in the circuit: Cold air. Supply air. Heating contractor. Alarm. On delay…
Q: a reversible, nonflow, constant volume process decreases the internal energy by 316.5kJ for 2.268…
A:
Q: This problem is an example of over-damped harmonic motion. A mass m = 3 kg is attached to both a…
A:
Q: The rigid tank shown in the figure has a volume of 0.05 m³ and initially contains a two-phase…
A:
Q: When the temperature remains constant, the relationship between pressure an volume can be expressed…
A: Explanation: According to Boyle's law, for an ideal gas, absolute pressure is inversely proportional…
Q: A composite assembly consisting of a steel [G-80 GPa] core (2) connected by rigid plates at the ends…
A:
Q: The two aluminum rods AB and AC have diameters of 10 mm and 8 mm, respectively. (Figure 1) Figure…
A: GivendAB=10mmdAC=8mmσallow=150 MPa
Q: 1) Draw and calculate the resultant moment. 0= 19 deg -6 10 25 7 6.45 1.5° -5 20 y Z X
A: Given: Force→F1=-6i+10j+25k Force→F2=5i-5j+20k And from all the distances given in the figure:…
Q: 1. What is the enthalpy of saturated steam (water) at 20°C and 73°F in both kJ/kg and BTU/lbm?
A:
Q: A 1.2 m x 1.2 m square gate located in the vertical side of an open tank is pivoted about the…
A: As per bartleby terms and conditions, i have answered first 3 subparts of the question. please post…
Q: Based on Problem 4-9 from the textbook. The cable exerts a force P at the end of the crane boom.…
A:
Q: A steam power plant operates on an ideal reheat Rankine cycle and uses water as the working…
A: The given information in the problem is shown in the following attached image:
Q: 16. 1000CFM of air are compressed at constant temperature of 85°F and 198 psia to 580 psia. For both…
A:
Q: Question 1: Which of the following are material properties? O Young modulus O Electrical resistance…
A:
Q: ammonia vapor is compressed in a close system from 15 psia,3 cu ft to 150psia,0.4cu ft. according to…
A:
Q: Q2. If FAB = 500 lb and FAC = 800 lb. Determine the magnitude of the resultant force and the…
A: According to the given data FAB=500lb FAC=800lb we need to find Resultant and co-ordinates…
Q: A bulk member experiences hydrostatic pressure of 2 GPa. List all components of the stress tensor…
A: Given, A bulk member experiences hydrostatic pressure of 2 GPa
Q: A D Co 12.5 in. 4 in. Fig. P2.28 16 in. -X- 50 lb E B in.
A:
Q: A rod with mass m can rotate about its end. A disk with mass m is connected to the other end of the…
A: Given: To find: Equation of motions
Q: Rod BD is made of steel (E = 29 × 106 psi) and is used to brace the axially compressed member ABC.…
A:
Q: 1.21 The thermal conductivity in a particular plane wall depends as follows on the wall temperature,…
A:
Q: 22: A shaft is made of material has stress-strain curve is given by o=225+125 € 0.25 MPa .The shaft…
A: The stress-strain curve is given by σ=225+125ε0.25 MPa The velocity is v=120 mm/min⇒v=2 mm/s The…
Q: In a power plant operating with water and steam, the following measurements and observations were…
A:
Q: The resultant force of the three forces shown in (Figure 1) is FR = {9j} kN.
A:
Q: Q2: A: For the tanks-system shown below, write the equations (only) of the flow in each tank. Assume…
A: Given: For the tank1: Incoming flow rate=5 gal/min Outgoing flow rate=2+3=5 gal/min Concentration of…
Q: Consider a single pane glass window versus a double pane window. Find the R value of a single pane…
A: Given: The thickness of the glass, t = 0.5 cm = 0.005 m The air gap, s = 0.65 cm = 0.0065 m The…
Q: Problem Statement Based on Problem 4-151 from the textbook. The pipe assembly is subjected to the…
A: To simplify: The system to resultant wrench and specify the location of the wrench along the axis of…
Q: Referring to the reversible heat pump cycle shown in the figure, p₁ = 14.7 lby/in². pa=34.7 lb/in².…
A:
Q: 5-4 Composite A-36 steel bar shown made from two segments AB and BD. Area AAB = 600 mm2 and ABD =…
A:
Q: RC-2 A half ring of charge lies in the x-z plane with its center at the origin as shown to the…
A:
Q: From the diameter of the sun and the earth and the mean distance of sun from earth, estimate (a) the…
A: Diameter of the sun = 1,392,000 km = 1.39 × 109m Diaplanet-Y= 340,800 km = 3.408 × 108m Mean…
Q: 4. What horizontal force P on the wedges B and C is necessary to raise the weight of 20 tons resting…
A:
Q: Calculate the density and error calculations (kg/m^3) using the following values. (ρ = m/V). Mass =…
A: Given: To find: The density and error calculations (kg/m^3) using the following values. (ρ = m/V).…
Q: A mass of 0.10 kg is attached to a spring. It is pulled 200 mm to the right of its position when the…
A: Given: Mass→m=0.10 Kg Initial amplitude→X1=200 mm=0.2 m Shifting of the mass after each swing=30…
Q: Three cables are connected at A, where the forces P and Q are applied as shown. Knowing that Q = 0,…
A: For the given configuration, Q = 0 N It is required to determine the value of P for which tension in…
Q: Problem 2: Each member has an area of 1150 mm2 Solve for the TRUSS REACTIONS of Problem 2 and FORCE…
A:
Q: The Clausius inequality holds good for, 1, any process 2, only reversible process
A: The answer is given below,
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- A window measures 36 inches x 50 inches and there are 20 of these windows in a structure. The U-factor for this single pane metal window is 1.3 Btu/hr-ft2-oF. U-factor is the conduction factor (and thus the reciprocal of an R-factor) and is equal to conductivity of the material k over the conducting pathlength L. Assume conduction only. a. Estimate the heat transfer (in Joules per day) through these 20 windows when the inside temperature is 20C and the outdoor temperature stays at -15C. b. The U-factor of replacement windows (double pane, argon filled, low-E vinyl frames) is 0.31 Btu/hr-ft2-oF. How much heat is transferred in a day for this case?You have fabricated a 1000x scale model of a microscale feature that is to be used in a microchip. The device itself is only 1 mm in size and is therefore too small to test accurately. However, you'd like to know the heat transfer coefficient between the device and an air flow that has a velocity of 10 m/s. What velocity should you use for the test and how will the measured heat transfer coefficient be related to the actual one?b. A large potato is dropped into a pot of boiling water and allowed to boil for half an hour. Which type of system does this represent Lumped or distributed parameter? Provide a reason for your choice .. Comment on temperature distributions. (ii.)
- Please provide accurate answer with proper steps The wall of the furnace is 30.48 mm thick and is insulated from outside. Thermal conductivity of the wall material is 0.1 W/m K and the insulation material is 0.01 W/m K. The furnace operates at 650 0C and the ambient temperature is 30 0 Allowable temperature on the outer side of the insulation is 1000C. Determine the overall heat transfer by conduction per unit area occurring across a furnace wall made from clay. If the air side heat transfer coefficient is 0.4 W/m2 K, calculate the minimum insulation thickness requirement.(Q4) A thermopile 18 constructed with Iron-constantan materials. Four junctions are maintained at 300°C and for junctions are maintained at 40°C. The output of the thermopile is connected to a potentiometer. What voltage will be indicated if both terminals of the potentiometer are at the same temperature? What is the temperature indicated in this case?1. A motor coil can be modeled as a hollow copper cylinder with an outer diameter of 0 50 mm, an inner diameter of 40 mm, and a length of 60 mm. The motor stalls at time t = 0 and, at this point, the copper experiences a step input in electrical heating of Po u(t), where Po is 350 W. Assume that there is little time for significant heat loss to the environment so that the copper cylinder can be considered to be insulated. If the initial temperature is 30 °C, find the temperature as a function of time, T(t), analytically using Laplace transforms. Calculate the time required to reach the breakdown temperature of the wire insulation, which is approximately 250 °C. Write a script file in MATLAB® to: (a) determine the time for the copper to reach 250 °C using the command find; and (b) plot T(t) over this time interval. Copper has a density of 8960 kg/m³ and a specific heat of 390 J/kg-°C. 25 mm 20 mm P(t) = Pou(t)
- A furnace is required to sinter powder-metal parts. It operates continuously at 650 °C while the parts are fed through on a moving belt. You are asked to select a material for furnace insulation to minimize heat loss and thus to make the furnace as energy-efficient as possible. For reasons of space the insulation is limited to a maximum thickness of x = 0.2 m. Derive a material index for selecting the material for the insulation.4 ) Every temperature measuring instrument makes use of specific physical property in order to measure temperature objectively . Which physical properties are used in thermocouple , PT sensors and mercury - in - glass thermometer ? Briefly describe each of this methods.Derive a formula for the thermal resistance, R₁, for a spherical shell assuming one- dimensional heat flux in the radial direction. The inside and outside radii of the spherical shell are r; and r., respectively, and the shell is made of a material having thermal conductivity k. Assume the temperatures at the inside and outside surfaces of the shell are T and T., respectively. The thermal resistance formula assumes the rate of heat transfer through the spherical shell, Q, is constant. The heat flux is in the radial direction for this one-dimensional case, and the dT heat flux is given by Fourier's law: q, = -k The rate of heat transfer through a dr spherical surface is Q =q₁A where A = 4лr². Derive the formula for the thermal 1 ++)) r = resistance for a spherical shell answer: R₁ 1 1 4лk ri
- Pores are important for the cells to enter and grow, as well as in capillary suction of tissue fluid and blood. They also provide a very large surface area for cell interaction. Calculate the surface area of a collagen sponge that is made of approximately 10,000,000 spherical pores (average 100 μm in diameter) that touch each other in one cubic centimeter.Stage Design A cable is used to support an actor as he swings onto the stage. Now suppose the tension in the cable is 920 N as the actor reaches the lowest point. What diameter should an 11-m-long steel cable have if we do not want it to stretch more than 0.50 cm under these conditions? R. Actor Sandbag SOLUTION Conceptualize Look back at the Example "A Grand Entrance," where we analyzed a cable used to support an actor as he swung onto the stage. We ignored any stretching of the cable there, but we wish to address this phenomenon in this example. Categorize We perform a simple calculation involving the equation F A Y = AL Li so we categorize this example as --Select--- v problem. Solve the Young's modulus equation for the cross-sectional area of the cable: FL; A = YAL Assuming the cross section is circular, find the diameter of the cable from d = 2r and A = ar (Use the following as necessary: F, Y, Li, AL, and r.): FL A d = 2r = 2 - = 2 Substitute numerical values. (Enter your answer…Experiment: A cooling tower uses forced air and column packing to cool downward-flowing water. Inlet water temperature and water flow rate are varied to investigate effects on outlet water temperature, outlet air temperature, and outlet air humidity. The system is first observed operating with ambient room temperature water. A heat load is then applied to the water tank, and the system response is observed. This is to simulate a power plant starting up and placing a cooling load on the cooling water supply. The aim is to compare the system response with and without the load. Data from the Experiment and the make-up water mass flow rate are both shown in the following tables below. For the load cases, determine the net rate of water evaporation from the cooling water to the air using the equation for air flow rate. Compare this with the rate at which make-up water enters the system. For the load cases, determine the rate of work supplied by the pump and compare it to the pump power…