wo walls of cold storage plant are composed of an insulating material (k = 0.25 kJ/hr-m-°C), 100mm thick at the outer layer and material (k = 3.5 kJ/hr-m-°C), 15mm thick at inner layer. If the surface temperature at the cold side is 30 °C and hot side is 250 °C, find the heat transmitted per square meter

Q: A family enters a winter vacation cabin has been unheated for such a long time the interior…

A: Given:Volume of the room, V=4 m×4 m×3mV=48 m31 m3=1000 LV=48000 LPower, P=2 kW

Q: The temperature distribution for the plane wall is given in Fig. and here T1 and T2 are the…

A:

Q: A metal cube of 0.1 m sides is being cooled down uniformly from 300°C to 30°C by placing it in cold…

A:

Q: You are asked to estimate the maximum human body temperature if the metabolic heat produced in your…

A: The temperature distribution is The thermal conductivity is The radius of cylinder is .The…

Q: A 1000 m³ cubic building (meaning it is a cube with sides of length 10.0 m) has concrete walls 20 cm…

A:

Q: A pipe passes through a room in which the surrounding air is at 22 ºC. The diameter of the pipe is…

A: Given data:

Q: 1. A beverage cooler is in the shape of a cube, 42 cm on each inside edge. Its 3.0-cm thick wall are…

A:

Q: The temperature distribution across a wall 0.25 m thick at a certain instant of time is T(x) = a +…

A:

Q: On a multi-layered square wall, the thermal resistance of the first layer is 0.005 ° C / W, the…

A: The thermal resistance of first layer is R1=0.005°C/W. The thermal resistance of second layer is…

Q: Problem: A plane wall 6.0 cm thick generates heat internally at the rate of 0.3 MW/m³. One side of…

A:

Q: The heat transfer through a wall 25’x10’ is 8750 Btu/ hr. The outdoor air and surface temperature =…

A: Given Data→ Dimensions of wall 25'×10' Heat Transfer through a wall  Q=8750 Btuhr Outdoor air and…

Q: Q2. Steam pumped through a long- insulated pipe at a temperature of T= 500 K and provides a…

A:

Q: Q2. An Aluminum cube 5cm side length (rho=2700,C=0.896 KJ/Kg.C and k-204 (W/m. C) initially at 20 C,…

A:

Q: Heat is generated in a sphere of radius 1 m at a rate of 1000 W/m3. The sphere is surrounded by air…

A: The radius of sphere is The heat generation rate is The temperature of air is The thermal…

Q: You are designing a new eco-friendly thermal coffee mug. It is shaped like a small globe to minimize…

A:

Q: An AISI stainless steel spherical canister is bath-cooled to store chemicals. The properties of the…

A:

Q: Convection heat transfer from a plate (2 m x 2 m) is 450 W. If surface temperature of plate is 450 K…

A: Given, Area of plate = A = 2 m x 2 m = 4 m2 Heat transferred = Q = 450 W Surface temperature = Ts =…

Q: Find the heat transfer rate through a plane wall 20cm thick and 0.1m2 heat transfer area. The…

A:

Q: Calculate the over-all coefficient of heat transfer U for a piece of glass 1/8-in thick, exposed to…

A: Given: The thickness of the glass: →L=18 in=0.0031 m One side still air temperature: →T1=70°F=294.26…

Q: A large 100-mm thick steel plate is initially at uniform temperature T = 180°C at time t = 0. Both…

A:

Q: A house, for cooling purposes, consists of two zones: the attic area zone A and the living area zone…

A: Solution: Given Data: K1 = 1/4 K2 = 1/8

Q: b) A plane wall is 205 mm thick and area 225 cm2 has a thermal conductivity of 14.86 W/m°C. The…

A:

Q: Plaster Insulation Brick Inside Air Outside Air le ra A particular house wall consists of three…

A: CONDUCTION COVEVECTION HEAT TRANFER THROGH A COMPOSITE LAB Heat move through a plane mass of…

Q: A hollow cylindrical copper conductor 1.27cm. i.d. and 5.1cm. o.d. carries a current density 5000…

A: The inside diameter is di=1.27 cm. The outer diameter is do=5.1 cm. The thermal conductivity is…

Q: P3. After a particularly cold night, Alice leaves a tub of water outside. You may consider the…

A: Given: Ground temperature Tc=-10°CAir temperature (Th)=10°CInitial thickness of water (h0)=10cm or…

Q: Part A If the temperature of the room is 20°C and outside is 10°C, find the rate of heat flow for a…

A:

Q: Q: A large plane wall of thickness (L= 0.3 m), thermal conductivity ( k = 40 W/m-°C), and surface…

A: Given, L = 0.3 mk = 40 W/m °CA = 0.4 m2T(0) = 70 °Cq' = 1200kk + 20L=1200 (40)40 + 20 (0.3)=1043.48…

Q: Q1: In a steel sheet factory, plates in a rectangular shapes are made. One plate is maintained at a…

A:

Q: Q2:- A sphere made of pure copper, which is 13 mm in diameter, is 70 °C (at t=0) when it inserted…

A:

Q: (5) Consider a wall (as shown above) of thickness L=1 m and thermal conductivity k-1 W/m-K. The left…

A: Givenq˙=1W/m3k=1W/mKL=1mon both side of wallT∞=1K  h1=1W/m2KA=1m2Assumption made-1D heat…

Q: An oil storage tank has 20mm steel walls covered with 50mm of fiber glass insulation. if the oil…

A: Given:- t1=20mm t2=50mm T1=150°C T2=20°C hair=20 W/m2.°C To find: a) Rate of heat loss b) Heat loss…

Q: A 20-çm diameter sphere has a surface temperature of 500 K. The sphere is suspended in 300 K still…

A: Given data as per question Diameter of the sphere =20 cm =0.2 m The surface temperature of sphere…

Q: A house, for cooling purposes, consists of two zones: the attic area zone A and the living area zone…

A: Heat capacity of zone B is 14°F per thousand Btu The heat removal is 41000 Btu/hr. The outside…

Q: The compartment below is used as a freezer of refrigerator compartment. Inner wall is at -8 C and…

A: Option C is correct K=0.097 w/mk

Q: A Multi-layer wall of a building is shown in the following figure. The thermal conductivity of A, B,…

A:

Q: A team of students tests a material for its thermal conductivity (k).  After 20 minutes in a heat…

A:

Q: Thermodynamics In a solid sphere of 0.2 m diameter, heat is generated at the rate of 1.2 x 106…

A: Given:d=0.2 mq=1.2*106 W/m3Tc=300°Ck=50 W/m.k

Q: The composite wall of an oven consists of three materials, two of which are of known thermal…

A: Given:kA=25 W/m.KkC=60W/m.KLA=0.40 mLB=0.20 mLC=0.20 mTs,o=20oCTs,i=600oCT∞=800oCh=25 W/m2.KFind:The…

Q: 4. Two aluminum blocks with different dimensions, but the same mass are shown in the figure. The…

A:

Q: Refer to the rectangular region in the figure below, the inner boundary surfaces are insulated and…

A: Conduction heat transfer is the transfer of heat by virtue of direct contact or molecular…

Q: Problem 4 A cork board (k = 0.039W/m K) 3 cm thick is exposed to air with an average temperature T..…

A:

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.