What is the rate of heat transfer through a piece of Celotex 3 ft by 8 ft by 1 in. in thickness, if the temp of one surface is 80°F and of the other side is 60°F? thermal conductivity of Celotex in AES = 0.028. Pls determine the temperature gradient and the direction of the heat transfer as well.
Q: One particular zone served by a multizone air handler has a design cooling load of 1750 Btu/hr (0.5…
A: Given Data: Design cooling load of the multizone air handler LD=1750 Btuhr=0.5 KW Sensible Heat…
Q: A turbine at 30,000 rpm is used to drive a reduction gear delivering 3 hp at 3,000 rpm. The gears…
A:
Q: Ten years ago a small steam plant of 2000-kw capacity costing $125 per kw was erected. The life was…
A:
Q: (Permeability). A cylindrical core sample of 1 cm length and 1 cm2 cross-section has upstream and…
A: Introduction For the calculation of permeability first, we have to calculate the heat transfer rate…
Q: PROBLEM 1.0 A flat area 1.5x10mm² is pulled with a speed of 0.4m/s relative to another plate located…
A:
Q: The figure below shows a mixing tank initially containing minitial = 2500 lb of liquid water. The…
A:
Q: calculate the forces in AB and BC
A: The problem involves writing the forces in the members using Position Vectors and solving the…
Q: What ideal thermal efficiency is possible from a Diesel having r= 15, A:F = 40:1, Q₁ = 42,800 J/g?…
A: compression ratio: r=15 air_fuel ratio: A:F = 40:1 ie ma/mf=40/1 where mf is mass of fuel and ma is…
Q: Describe the operating principle of this hydraulic circuit
A: Here for the given Hydraulic Circuit the various parts are given : Pressure Gauge Single acting…
Q: The pressure drop across a filter in a water supply line is measured using a Utube manometer filled…
A: Given Data :- specific gravity of carbon tetrachloride (SC) =1.595 the upstream pressure =18.6…
Q: A closed, rigid tank contains 1.50 kg of water, initially a two phase liquid-vapor mixture at T₁ =…
A: Given data :- mass = 1.50 kg Initial T1=90°C (saturated mixture) And final T2 = 120°C (saturated…
Q: An existing pump is used to pump water with the following data at BEP: D = 2.15 in, N = 1784 rpm, ρ…
A: The given information in the problem is listed in the following attached image:
Q: Determine the force in each member of the loaded truss. The force is positive if in tension,…
A:
Q: A flywheel connected to a punching machine has to supply energy of 400 Nm while running at a mean…
A: Given data:Supply energy of flywheel, ∆E=400 N-mMean angular speed, ω=20 rad/sFluctuation of speed,…
Q: Crude oil of kinematic viscosity (7/100000) m2/s flows through a pipeline of internal diameter 304.8…
A:
Q: What is the rated flywheel power for a CAT 834H four-wheel tractor equipped with a converter drive?…
A: According to the given question Rated power of the tractor = 523 HP Efficiency of the tractor = 92%…
Q: The system in the figure is at 20°C. If the pressure at point A is 1900 lb/ft2 , determine the…
A:
Q: show schematic drawings, conversions, units and box in your final answers A furnace wall is made up…
A:
Q: P= ? ↑. 6⁰ A 4 -7'- W = 24,000 lb 18'. 60° F = 6000 lb
A: Given data. Force F = 6000 lb Weight of Dam = 24,000 lb Find the force P.
Q: A flywheel connected to a punching machine to supply energy of 400 Nm while running mean angular…
A:
Q: 2. How far from the axis of A will the center of the roller R be located if the angular speed of…
A:
Q: The weight of a body is 100 lb. Determine the rate of acceleration (ft/s2) if a net force of 50 lb…
A: Given data:- The weight of a body (m) =100 lb Force applied on the body (F) =50 lb To Find :-…
Q: Q4) While removing a wheel to change a tire, a driver applies forces P-120 N at the ends of two of…
A: Given data Applied load = 120 N Shear modulus = 80 Gpa Diameter of solid shaft = 2cm = 20 mm Find…
Q: Develop a project proposal for the project selected focussing on the Cost Section. Ensure that all…
A: A project proposal is a project management document that’s used to define the objectives and…
Q: Q4) While removing a wheel to change a tire, a driver applies forces P=120 N at the ends of two of…
A:
Q: The mass of the ball is m = 20 kg and the length of the light rod is /= 0.52 m. The ball-rod…
A:
Q: From the speed chart below, determine the correct cutting speed for facing a 2 in. diameter Cast…
A:
Q: Using the tables for water, determine the specified property data at the indicated states |(a) At p…
A:
Q: _% od 25m is 9m
A: Given _% od 25m is 9m
Q: -cm cube of stainless steel is initially at 500oC. It is suddenly immersed in a tank of oil…
A:
Q: A homogenous thin plate of mass 2kg and radius r = 3? cm is shown. If d is 4cm, what is the moment…
A: Given,
Q: The higher heating value of benzene (C6H6) is 42,277 kJ/kg. From this value, compute the lower…
A: Given data, HHV = 42277 kJ/kg Find LHV = ______ kJ/kmol
Q: If your home (in CA) requires 1.5 million Btu of heat energy from the furnace on a cold winter day,…
A: The volume of Natural Gas required is to be determined from which price needs to be obtained
Q: Find the work done by the engine cycle shown in the P-V diagram below. P(kPa) 200 100+ a. 3.0 kJ O…
A: Given data P-v diagram of power producing cycle Brief introduction. Work done = area of p-v…
Q: What is the normal stress in the bar if P=13 kN and A = 559 mm2? Calculate your answer to 1 decimal…
A: Given data:- P=13 kN and A = 559 mm2 To find:- Normal stress in the bar
Q: Draw the V and M diagrams, find the deflection under the 75 klb load and the displacement of point…
A: The free body diagram of member BC is RBH and RBV are the horizontal and vertical resistance force…
Q: For a hydroelectric plant, a hydraulic turbine-generator is installed at the site below the free…
A: Hydraulic Power is defined as Power given by the fluid to the runner of a turbine(runner is a…
Q: As shown in the figure below, a closed, rigid tank fitted with a fine-wire electric resistor is…
A:
Q: How many balls of 30 mm diameter fit in a volume of 1.91 m^3
A: Given data: ● The total volume of space: V = 1.91 m3 ● The diameter of the single ball: d = 30 mm =…
Q: From the speed chart below, determine the correct cutting speed for performing a facing cut on Brass…
A: Milling is the process of machining the surface of the object. Milling is done with the help of a…
Q: The bucket is hoisted by the rope that wraps around a drum wheel. If the angular displacement of the…
A: Given Data: The angular displacement of the wheel θ=0.3t3+9.8t rad Radius of Wheel Rw=0.75 ft
Q: Specify cutting tool angles for a single-point cutting tool and usage of each angle with aid of a…
A: Single point cutting tool is tool used for turning, facing and many more operations for material…
Q: Problem no. 1. Compute the resultant and its location from pt. A 1m 4m B 16 kN/m 5m 6m 3m D mon 5…
A:
Q: How many balls of 50 mm diameter fit in a volume of 1910 L
A: Given:-Diameter of ball (d) = 50 mmVolume of container (V) = 1910 literTo Find :-Number of such…
Q: A pump discharges into a semi spherical tank at the bottom and cylindrical on top with a radius of 2…
A: Given data r=2 mh=8 mS=1.1 Here, r is the radius of the tank and h is the height of the tank. While…
Q: 9. Express the force F= 1200 N in Cartesian vector form. 4 m m F-900 N m 2m
A: In text, F = 1200 N and in figure F = 900 N, So I am taking F = 1200 N because it is given questions…
Q: solve using Tip of tail method, parallelogram method, and triangle method
A: We draw the tip tail method, and parallelogram based on the give two vectors
Q: =t 8₁ = = A₂ L₁+ L₂ (112) x AT nd the value of ♂ by taking this limit: lim 8₁. Leave the answer in…
A:
Q: A steel shaft is to be designed so that it is supported by roller bearings. The basic geometry is…
A:
Q: A cylindrical rod having a diameter of 10.0 mm is to be deformed using a tensile load of 20,500 N.…
A: Given question is related to solid mechanics and materials science
What is the rate of heat transfer through a piece of Celotex 3 ft by 8 ft by 1 in. in thickness, if the temp of one surface is 80°F and of the other side is 60°F? thermal conductivity of Celotex in AES = 0.028. Pls determine the temperature gradient and the direction of the heat transfer as well.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- 1.3 A furnace wall is to be constructed of brick having standard dimensions of Two kinds of material are available. One has a maximum usable temperature of 1040°C and a thermal conductivity of 1.7 W/(m K), and the other has a maximum temperature limit of 870°C and a thermal conductivity of 0.85 W/(m K). The bricks have the same cost and are laid in any manner, but we wish to design the most economical wall for a furnace with a temperature of 1040°C on the hot side and 200°C on the cold side. If the maximum amount of heat transfer permissible is 950 , determine the most economical arrangement using the available bricks.As a designer working for a major electric appliance manufacturer, you are required to estimate the amount of fiberglass insulation packing (k = 0.035 W/m K) that is needed for a kitchen oven shown in the figure below. The fiberglass layer is to be sandwiched between a 2-mm-thick aluminum cladding plate on the outside and a 5-mm-thick stainless steel plate on the inside that forms the core of the oven. The insulation thickness is such that the outside cladding temperature does not exceed 40C when the temperature at the inside surface of the oven is 300C. Also, the air temperature in the kitchen varies from 15Cto33C, and the average heat transfer coefficient between the outer surface of the oven and air is estimated to be 12.0W/m2K. Determine the thickness of the fiberglass insulation that is required for these conditions. What would be the outer surface temperature when the inside surface of the oven is at 475C?2.50 Compare the rate of heat flow from the bottom to the top of the aluminum structure shown in the sketch below with the rate of heat flow through a solid slab. The top is at v, the bottom at . The holes are filled with insulation that does not conduct heat appreciably.
- What is the rate of heat transfer, temperature gradient, and the direction of the heat transfer through a piece of Celotex 3 ft by 8 ft by 1 in. in thickness, if the temp of one surface is 80°F and of the other side is 60°F? - thermal conductivity of Celotex in AES = 0.028.An oil storage tank has 20mm steel walls covered with 50mm of fiber glass insulation. if the oil temperature is kept at 150 degree Celsius, what is the rate of heat loss when the outside temperature is 20 degree Celsius and external air coefficient is 20W/m². How much would the heat loss be reduced by doubling the thickness of the insulation?1. A beverage cooler is in the shape of a cube, 42 cm on each inside edge. Its 3.0-cm thick wall are made up of plastic (kr = 0.050 W/mK). When the outside temperature is 20°C, how much ice will melt each hour? Tice is 0°C. 2. One of the possible mechanisms of heat transfer in human body is conduction through body fat. Suppose that heat travels through 0.03 m of fat in reaching the skin, which has a total surface area of 1.7 m² and a temperature of 34°C. Find the amount of heat that reaches the skin in half an hour, if the temperature at the body, interior is maintained at the normal value 37°C ? Thermal conductivity of body fat is k = 0.2 J/sm°C. 3. The air in a room is at 25°C and outside temperature is 0°C. The window of the room has an area of 2m² and thickness 2mm. Calculate the rate of loss of heat by conduction through window ? Thermal conductivity for glass is 1 Wm¯'degree!.
- Find the thermal resistance r (in hr - °F/BTU) and the equivalent R-value (in hr ft?. °F/BTU) of a typical frame 20' x 7.5" wall consisting of a 0.5" plaster board on the inside of the room, nominai 2 x 4 studs, and a 0.5" sheathing on the outside. The spaces between the studs are filled with an R-15 insulating foam. What is the heat loss (in BTU) through this wall in four hours if the inside temperature is 72°F and the outside temperature is 32°F? (Assume that the 15% of the wall's area are studs and the remaining 85% is filled with the insulating foam. Assume that the air is moving outside the wall.) r= 0.0805 x hr: OF/BTU R=0.09 x hr ft2. F/BTU AQ = BTU2. 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)Q2/ A composite wall is formed of a 2.5 cm copper plate, a 3.2 mm layer of asbestos, and a 5 cm layer of fiberglass. The wall is subjected to an overall temperature difference of 560 C. Calculate the heat flow per unit area through the composite structure.
- The interior-wall temperature of an annealing oven constructed of firebrick (Missouri) is2552°F, and the exterior-wall temperature is 392°F. If the heat loss is 3600 Btu/(hr)(sq ft),determine the thickness of the wall, in inches. (answer 5.67”)A wall consists of a layer of wood and a layer of cork insulation of the same thickness. The temperature inside is 34.0°C, and the temperature outside is 0.0°C. The thermal conductivity of wood is 0.130 W/(m·K) and the thermal conductivity of cork is 0.0460 W/(m·K). A) What is the temperature at the interface between the wood and the cork if the cork is on the inside and the wood on the outside? in C B) What is the temperature at the interface if the wood is on the inside and the cork is on the outside? in C C) It doesn’t matter whether the cork is placed on the inside or the outside of the wooden wall because the temperature at the interface differs for the two cases.the temperature at the interface differs for the two cases. the temperature at the interface is the same for the two cases.the temperature at the interface is the same for the two cases. the total thermal resistance is the same for the two cases.the total thermal resistance is the same for the two cases.…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,