Acertain superinsulation material having a thermal conductivity of 2*10^-4 W/m*^ C is used to insulate a tank of liquid nitrogen that is maintained at - 196 degrees * C : 199 kJ is required to vaporize each kilogram mass of nitrogen at this temperature. Assuming that the tank is a sphere having an inner diameter (ID) of 0.52 m, estimate the amount of nitrogen vaporized per day for an insulation thickness of 2.5 cm and an ambient temperature of 21 degrees * C . Assume that the outer temperature of the insulation is 21 degrees * C .

Q: Question 5: Z=62 a. An iron sphere of mass (Z + 300)g is kept in a container having boiling water…

A: Answer (a) Given data: m=300+62=362 gT1=100°CT2=25.5°CC=452 J/kg Need to determine the heat absorbed…

Q: Estimate the interfacial heat transfer coefficient for evaporation of a thin film of saturated…

A: Conduction Resistance of Interfacial Vaporization, RA = Heat FluxCoefficient Value=1500.05=3000 = 3…

Q: A chromel–constantan thermocouple measuring the temperature of a fluid is connected by mistake with…

A:

Q: he boiling temp of nitrogen at 1 atm is -196°C. The temp of liquid itrogen in a tank open to the…

A: Given that ,  heat transfer coefficient h=35 W/m2Kradius of sperical tank r=d2=32=1.5m Temperature…

Q: Estimate the boiling heat transfer coefficient between the water and the wire surface. Properties of…

A:

Q: Indirect Cooling With Liquid Nitrogen. You are designing a system to cool an insulated silver plate…

A:

Q: A copper rod has an initial length 5.0 cm and a thermal expansion coefficient of 16 x 10-6 /K. It is…

A:

Q: A glass door is used on a fireplace to reduce exfiltration of room air through the chimney. The…

A: The mean film temperature is The Rayleigh number is

Q: At a certain location during the winter, the average air temperature is 10 degrees Celsius and the…

A:

Q: We are testing a thin, transparent film heater that is bonded to the inside of an automobile window…

A: Thickness of atuomobile window, t=3 mmSurface area of window, A=0.6 m2Air temperature inside the…

Q: The time evolution of the temperature of an object follows the Newton's cooling laws dT dx where the…

A: Newtons Cooling Law is given as, dTdX=-k (T-Ts) K= 2.2 1/s   Ts =25.6 °C   t=0  T(t=0) = 200 °C   h=…

Q: kilograms of gas with a molecular weight of 28 is closed and equipped with an electrical resistor.…

A:

Q: Two engines have cylinders which are geometrically the same in size and shape. The cylinders of…

A: The objective of the question is to compare two engines, one with a cooling system (engine A) and…

Q: he clear plastic bottles used for carbonated beverages (sometimes also called “soda,” “pop,” or…

A: Given Inside pressure = 570 kPa Outside pressure = 7 kPa Permeability Constant bottle = 0.23 x 10-13…

Q: Q3/Condensing steam at 1 atm is used to maintain a vertical plate 20 cm high and 3.0 m wide at a…

A: Given DataT∞=100°CTw=20°CH=20cm=0.2mW=3m

Q: A hollow aluminum cylinder 16.5 cm deep has an internal capacity of 2.000 L at 23.0°C. It is…

A:

Q: Question : Studies show that the major energy consumption in Fijian villages  is wood which is used…

A: Given : V =2 L T1 = 27 C T2 = 100 C To find :  Efficiency

Q: A poultry house in Mogobane, is made of 100mm fired clay bricks. In winter, the inside air…

A: Given that, thickness of wall=100mm in winter , inside air temperature =24∘C…

Q: Calculate the heat losses per unit length in a horizontal tube with an outside diameter of 15 cm, if…

A: Outside diameter of tube, d=15 cm=0.15 mSurface temperature of tube, Ts=400 KSurrounding air…

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: Let's say a 3.0 gram copper wafer is dropped from a height of 50.0 meters. If 60% of the potential…

A:

Q: vity of 0.5. Assume the specific heat to remain constant at 600 J/kgK. Use a time step of 30 seconds…

A: Build a spreadsheet to do the step by step method for estimating the temperature of unprotected…

Q: A bare slab fuel element is 0.2 inches thick with a thermal conductivity of 10 BTU/hr-ft-F. It…

A: This problem involves heat conduction in a slab and can be solved using the heat conduction…

Q: How long should it take to boil an egg? Model the egg as a sphere with radius of 2.3 cm that  has…

A:

Q: To test a glue, two plates are glued together as shown in Fig. 3.16. The bar formed by the joined…

A:

Q: A steel plate having L = 3 m, b = 1.5 m, and thickness of 0.5 cm is placed in steam at 1 atm.…

A: In this problem, it is assumed that the temperature at any point in steel plate will be the same.…

Q: à long insulated tube is doped with an exothermic ma- erial which generates steady and uniform heat…

A:

Q: A mass of 300kg of oil is cooled in 1 hour from 70 celcius to 35 celcius in a cooler consisting of a…

A:

Q: fuel

A: To read the whole question in correctly

Q: A 0.6 m tank contains saturated liquid water at 200 °C. A valve in the bottom of the tank is opened…

A: Given ,  Liquid Water is at 200 ° C .  Volume of tank V = 0.6 m3 Properties of water can be taken…

Q: Thermal conductivity, temperature and heat flux in a solid are, respectively, analogous to mass…

A: Answer is given below:

Q: Consider a thin sheet of solid material with a large surface. One side of the material at r = O is…

A:

Q: In boiling water at 1 atm pressure outside a stainless-steel tube with a surface temperature of…

A:

Q: Read the question carefully and give me right solution according to the question. Note: Don't copy…

A: Given datar0=5 mm   T0=400°C   T∞=20°C   hw=10814 w/m2kTs=3000 kg/m3 C=1000j/kgk     σ=6.66×10-6…

Q: 19 mm diameter steel balls are quenched by heating to 989 K followed by slow cooling to 400 K in an…

A:

Q: On a 5 day wilderness expedition you'll need to heat 3.0kg of water to the boiling point each day.…

A:

Q: A current of 200 A is passed through a stainless-steel wire [k=19 W/mK] 3 mm in diameter. The…

A: Given data:-Current, i=200AThermal conductivity of wire, k=19W/m-KDiameter of wire=3mm ⇒Radius,…

Q: An industrial company manufactures tungsten cubes that need to be sintered to a temperature of 80OK…

A: We will analyze the above problem lumped system heat analysis, which assumes a uniform temperature…

Q: a 2cm diameter copper meltallic element at an initial uniform temperature of 60 C is submerged in…

A: INTRODUCTION : Whenever the solid body having the body mass (m), volume (v), density (p), specific…

Q: Once upon a time, a student from a certain university wants to learn crysta using a Swenson-Walker…

A:

Q: The global average sensible heat flux is 17 W/m2. Use the following information to estimate the…

A: GivenSHF=17 W/m2Q=520×1012 m3/yrLHV=2.5×103 kJ/kg=2.5×106 J/kg R=6400km

Q: A current of 200 A is passed through a stainless-steel wire [k=19 W/mK] 3 mm in diameter. The…

A:

Q: . Saturated steam at 500 K flows in a 0.20 m inside diameter, 0.21 m outside diameter pipe. The pipe…

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.