A spherical tank,the inner diameter 50 cm and is maintained at temperature of 50c,the outer diameter=1m,and the outer temperature 23c With k=204. 1)Calculate therate of heat transfer. 2)if the tank covered by a 120 mm layer of an insulation with k=0.16, calculate the rate of heat transfer. 49 10:04
Q: 0.6m 0 ARD MD ▾ Part A Determine the angular acceleration of link AB if link CD has the angular…
A:
Q: An electric motor running at 1200 rpm drives a punch press shaft at 100 rpm by means of a 130 mm…
A: To solve this problem, we can follow these steps: Step 1: Think about the problem step-by-step to…
Q: A mass of 10 g of oxygen fill a weighted piston-cylinder device at 20 kPa and 94.0°C. The device is…
A: Given DataMass of oxygen(m)=10 gFor oxygen assume R=0.2598Problem statementProblem says determine…
Q: In a liquid of density p, a circular plate of diameter d, tangent to the surface of the liquid, is…
A:
Q: Discuss the concept of hybrid systems and the modeling approaches used to address systems with both…
A: This question is based on the concept of hybrid system and modelling approach used.
Q: Given force F-800 N and section AB is a bar with a diameter d = 0.05 m. Determine the internal…
A: Given :Force, F=800 NDiameter, d=0.05 mSut= 350 MP aSuc= 550 MP aWe have to identify the bending…
Q: please solve this question. Question 4: For the mechanical system shown, find the input-output…
A: Given:Let us consider the given figure,To find:The input-output differential equation connecting to…
Q: ine the minimum accelerations of the blocks such that block A does not move relative to block B. The…
A:
Q: H(s) = 100 s+1 s² + 110s + 1000
A: We start with the transfer function:We rewrite it by factoring into real poles and zeros, complex…
Q: ed The robot arm moves the paint gun to 0.95 m directly above the car. The voltage between the car…
A: To determine:the speed with which a paint droplet will hit the car.Given:The voltage between the car…
Q: The figure shows a cantilevered beam, subjected to a uniformly distributed (rectangular) 40 N/m…
A:
Q: A servo-driven actuator is programmed to extend according to the velocity profile shown in Figure…
A: Consider the given velocity profile.Consider point O as origin. Thus coordinates of points are…
Q: Determine the slope at B and the deflection at point C of the simply supported beam using the…
A: The elasticity of beam is The moment of inertia is
Q: DRAW AN AUXILIARY VIEW THAT SHOWS THE TRUE SHAPE OF THE ANGLED CUT KEYWAY, ALONG WITH A TOP VIEW.
A: Given DataThe front and the top view of the object are provided in the question in third angle…
Q: Calcuate Shear and Bending From Point A to Point B and Point A to Point C. Draw a FBD from point A…
A: For the solution refer below images.Find F.B.D. and shear and bending diagrams for portions AB and…
Q: Define what a microchip is and provide examples of its applications in various fields.
A: To explain:What a microchip and its applications in various fieldsConcept use:A microchip, also…
Q: An ideal air-standard Otto cycle engine has a compression ratio of 8. At the beginning of the…
A: Here we will apply the basic equation of the heat and work for the respective processes to get the…
Q: The rod is supported by ball-and-socket joint D and cables AB, AC as shown in (Figure 1). Suppose…
A:
Q: 4-18. Determine the couple moment. Express the resu a Cartesian vector.
A:
Q: 4. A mass of 3 kg is suspended from a spring whose constant is 2 Nt/cm. The system is then immersed…
A:
Q: 1- The vertical reaction at B is given (16.5 to upward). () Determine the vertical reaction at…
A:
Q: 3. A mass m (2.0 kg) is attached to a horizontal spring of spring constant k (25 N/m) which is held…
A:
Q: Problem 2.132 The end B of a robot arm is moving vertically down with a constant speed vo= 2 m/s.…
A: v0=2 m/sd=1.5 mthe free body diagram:
Q: Determine the polar radius of gy 0.35a Answer: ko- H i
A: To determine:The polar radius of gyration
Q: Describe the three (3) main types of air handling units.
A: Describe the three (3) main types of air handling units.
Q: The motion of block E shown in the figure is harmonic and is defined by the equation yE =0.15…
A:
Q: Carbon dioxide gas is compressed at steady state from a pressure of 1.5 bar and a temperature of 0°C…
A: The mass flow rate of The gas is carbon dioxide.The specific heat of gas is .The inlet condition is…
Q: The work of adhesion (W) is the energy per unit area associated with bringing two immiscible liquids…
A: Given:The equation is .The is work of adhesion in .The is surface tension in .Concept used:The…
Q: 4-46. Air is pumped into the tank using a hose having an inside diameter of 6 mm. If the air enters…
A:
Q: 2) For iron at 300. K, the isothermal compressibility is 0.00594 GPa¹ and the thermal expansion…
A: To determine:the change in enthalpyGiven:the temperature of iron is Isothermal compressibility is…
Q: 1. (a) Given a discrete signal x[0] = 1, x[1] = -1, x[2] = 1, x[3] = -1, compute the DFT X[k]. Use…
A:
Q: Calcuate Bending From Point A to Point B and Point A to Point C.Calcuate Torsion From Point A to…
A: Distance between Point A and B = 12 in = 1 ftDistance between point A and C = 3 in = 0.25 ftdiameter…
Q: The bicycle has a velocity = 4 ft/s, and at the same instant the rear wheel has a clockwise angular…
A:
Q: Jet Path A water jet hits a wall and splits into two streams as shown above. The jet carries 3 kg of…
A: Solution:Given data: m1=3 kg/s A2= 2 x 10-3 m2 V2=V3=1…
Q: Q1/ Find the diameter of steel rope made from a ductile steel having a maximum stress 1500Kg/cm^2,…
A:
Q: Determine the moment of inertia and the radius of gyration of the shaded area with respect to the…
A: Determine the moment of inertia and the radius of gyration of the shaded area with respect to the…
Q: 3.12 The deformation of a component relative to rectangular axes is described by the dis- placements…
A: Given the displacements: The displacements at the starting point (0, 0, 0) and the ending point (1,…
Q: The figure shows the plane stress condition at an element. What is the maximum compression stress…
A:
Q: A longitudinal rolling process for plates is given. The diameter of the work rolls is dw = 150 mm.…
A: a) To determine the minimum thickness to which the sheet can be rolled, we need to calculate the…
Q: A rigid tank with a volume of 1.8 m³ contains 32.93 kg of saturated liquid-vapor mixture of water at…
A:
Q: but change the spring constant (k) of spring DB to 310 N/m
A: Determine the unstretched length of DB to hold the 40-kg crate in the position shown. Take k = 310…
Q: A round main supply duct will carry an airflow of 2,000 CFM with a static pressure drop of 0.325”…
A: Given:To find:Duct diameter.
Q: 4/36 Determine the force in member BE of the loaded truss.
A: Here we will use the method of section to calculate the load in member BE
Q: Find the residual hoop stress at the internal surface of a thick-walled cylinder made of a material…
A: Given Data
Q: At the instant shown rod AB has zero angular acceleration and an angular velocity of 16 rad/s…
A: The angular velocity of AB is .The angular acceleration of AB is .
Q: The magnitude of the absolute velocity of point A on the automobile tire is 19.6 m/s when A is in…
A:
Q: Problem #3: Consider a piston/cylinder assembly. Between region A and region B is a thin, rigid…
A: Given:The mass of air is .The pressure in Region A is .The temperature of Region A is The pressure…
Q: Use the Goulds Pump Selection System to find a pump capable of delivering at least 500 gpm against…
A: To solve the given problem, we will use the Goulds Pump Selection System. This system helps us…
Q: 6. A heat pump absorbs heat from the cold outdoors at 3°C and supplies heat to a house at 20°C at a…
A: Given data :-The Outdoor temperature The temperature inside House Rate of heat supplied Power…
Q: 23) Determine the area and the centroid (X Y )of the area. Fig (3). H 1m - 1m y=x X
A:
Step by step
Solved in 3 steps with 4 images
- 2.30 An electrical heater capable of generating 10,000 W is to be designed. The heating element is to be a stainless steel wire having an electrical resistivity of ohm-centimeter. The operating temperature of the stainless steel is to be no more than 1260°C. The heat transfer coefficient at the outer surface is expected to be no less than in a medium whose maximum temperature is 93°C. A transformer capable of delivering current at 9 and 12 V is available. Determine a suitable size for the wire, the current required, and discuss what effect a reduction in the heat transfer coefficient would have. (Hint: Demonstrate first that the temperature drop between the center and the surface of the wire is independent of the wire diameter, and determine its value.)2.15 Suppose that a pipe carrying a hot fluid with an external temperature of and outer radius is to be insulated with an insulation material of thermal conductivity k and outer radius . Show that if the convection heat transfer coefficient on the outside of the insulation is and the environmental temperature is , the addition of insulation actually increases the rate of heat loss if , and the maximum heat loss occurs when . This radius, is often called the critical radius.Q2- Water flows inside a steel pipe with an ID of 2.5 cm. The wall thickness is 2 mm, and the convection coefficient on the inside is 100 Wm? C. The convection coefficient on the outside is 10 W/n C. The pipe is covered with a layer of asbestos. 1-determine the thickness of the asbestos layer at the critical insulation radius of the pipe. 2-calculate the change percent of heat transfer with and without the insulation. 3-commet on your results,
- A coolant with a temperature of -20 ° C passes through a copper cylindrical wire. The outer diameter of the wire is 10 mm. The wire is in contact with air at a temperature of 25 ° C, which is h = 50 W / m2K. The heat conduction coefficient of the wire is k = 0.5 W / mK. Different thicknesses of insulation will be applied to the wire. a) Calculate separately the heat transfer rate per m when 0, 2.5, 5 and 7.5 m insulation is applied. b) Interpret from which thickness the insulation will increase the heat transfer by calculating the critical radius. c) Graph the insulation thickness and heat transfer rate against each other.The thermal conductivities of wood is kwood = 0.1W/(m°C)and air is kair = 0.0234W/(m°C). Part A If the temperature of the room is 20°C and outside is 10°C, find the rate of heat flow for a wall of wood with area = 10 m² and thickness of 5cm. O 60 W O 304 W O 34 W O 200 W O 100 W Submit Request Answer Part B The wall of wood with thickness of 5cm is now replaced with two layers of wood and a gap of air between the wood. Each layer of wood has a 2.5cm thickness and the gap is 1cm. The rate of heat flow will, decreases. increases. stay the same. Submit Request Answer Part C The temperature in the air gap will be, O 20°C, between 10°C and 20°C, O 10°C,c) A steel pipe of 100 mm bore, and 10 mm bore thickness, carrying dry saturated steam at 28 bars, is insulated with a 40 mm layer of moulded insulation. This insulation in turn is insulated with a 60 mm layer of felt. The atmospheric temperature is 15 °C. Calculate: (i) the rate of heat loss by the steam per metre pipe length. (ii) the temperature of the outside Dimensions in mm surface.zzzzzzz h₂-15 W/m²K Steel k₁=50 W/mK AVALEHT Ø100 1₂ " Steam 28 bar h-550 W/m²K, Inner heat transfer coefficient = 550 W/m² K Outer heat transfer coefficient = 15 W/m² K Thermal conductivity of steel = 50 W/m K Thermal conductivity of felt = 0.07 W/m K Moulded insulation Felt Moulded insulation K₂=0.09 W/mK Thermal conductivity of moulded insulation = 0.09 W/m 40 10. A 60 15°C Felt K₁=0.07 W/mK zzzzzzzz
- A hollow tube having an 'inside dia metes of (3m) and a wll thick ness of (0:5mm) isexpased to an enviroment at (h = 100 wht-t) and (Too=40k Whet heat generation nate in the tube will produce tube deuperatar f 250€ for kesowlm.k surface is insulated. a maximum Assume the inner O whet are the kate 7 heat.A ball made of steel alloy with a diameter of 2 millimeters is first heated to 800 degrees and then suddenly immersed in a water bath to cool down to 100 degrees. The materials from which the ball is made have a thermal conductivity coefficient of 54.94 w / mk, a heat capacity of 7860 kg / m3, a heat capacity of 450 j / kg. Also, the heat transfer coefficient is 41.66 2 / m2. a-)Find the temperature of the ball immersed in water after 10 seconds. b-)Find the time required to cool the ball to 400 degrees.2. In determining the thermal conductivity of a plateflat insulator, the temperature was measured on both sides of the 25 mm thick plate and gave the results of 318.4 K and 303.2 K. FluxThe measured heat is 35.1 W.m-2. Illustrate the problem in a simple schematic/drawing, then calculate the thermal conductivity inbtu/h.ft.oF and in W/m.K! (0.033 ; 0.058) 3. A coil-shaped cooling pipe is made of SS-304 material. This pipe is 1 ft long, 0.4 inch outside diameter, and inch inside diameter. This coil cooling pipe is used to cool the water in the bath. The temperature of the inner coil pipe is 40oF while the outer coil in contact with water is 80oF. The thermal conductivity of SS-304 is a function of temperature where k(T) = 7.75 + (7.78 x 10-3).T where k is in Btu/h.ft.oF and T is in oF. Calculate the rate of heat dissipation in watts! (1287.7)
- The steel pipe has an internal radius of 50 mm., a thickness of 5 mm. and a length of 5 m. Inside the pipe, hot fluid with temperature 80 C flows inside the pipe and cold fluid with temperature 20 C flowing outside the pipe. Let k=285 W/mC and hi= 25 W/mC, ho= 10 W/mC. Find 4.1) Heat Transfer Rate (Q) 4.2) Temperature on both inner and outer tube surfaces...Sipho’s mother is making a fire in the stove inside a shack using coal. A fan is used to extract the flue gasfrom the fire via a chimney made of zinc material. The wall thickness of Chimney is L=4mm and the walltemperature of the chimney on the flue gas side is T_si=60˚C. Sipho, playing outside next to the chimneyexperiences an ambient temperature of 20˚C. The surrounding temperature is T_sur=35˚C and the emissivityis ε=0.95. Assume the convection coefficient is 20W/m2K and the chimney is grey material.Under these conditions determine the outer surface (air side) temperature T_so=? of the chimney.Fluid fluid with a temperature of -20C passes through a copper cylindrical wire. The outer diameter of the wire is 10 mm. The wire is in contact with air at a temperature of 25C, which is h = 50 W / m2K. The heat conduction coefficient of the wire is k = 0.5 W / mK. It will be applied in different thicknesses. a) Calculation separately for the resulting heat transfer per m when 0, 2.5, 5 and 7.5 m are applied. b) To interpret which thickness will increase the heat transfer by calculating the critical diameter. c) Graph the insulation and heat transfer rate against each other.