In a manufacturing facility, 2-in-diameter brassballs (k = 64.1 Btu/h·ft·°F, r = 532 lbm/ft3, and cp =0.092 Btu/lbm·°F) initially at 250°F are quenched in a waterbath at 120°F for a period of 2 min at a rate of 120 ballsper minute. If the convection heat transfer coefficient is42 Btu/h·ft2·°F, determine (a) the temperature of the balls afterquenching and (b) the rate at which heat needs to be removedfrom the water in order to keep its temperature constant at120°F.

Q: Using EES (or other) software, investigate the effect of the exhaust gas inlet temperature on the…

A: The problem is based on the heat exchanger in which the exhaust gas is used for the evaporation of…

Q: Water is heated from 2°C to 78°C at a constant pressure of 100 kPa. The initial density of water is…

A:

Q: steam exits the turbine of a steam power plant at 105 F and is to be condensed in a large condenser…

A:

Q: For heat transfer purposes, an egg can be considered to be a 4-cm diameter sphere having the…

A: Given : The diameter of the egg is The boiling temperature of water is The heat transfer…

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: A 10 cm diameter aluminum ball is to be heated from 94°C to an average temperature of 140°C in 30…

A: Given that ,  Diameter D=10cm Radius r=5cm T1=94°CT2=140°Ct=30min=30×60s=1800sCp=0.91kJ/kgK

Q: As shown in the figure below, a jacketed container is used to cool the process stream. Some…

A: Assume the density of liquid ρ and density of coolant ρj are constant Mass balanceflow rate of…

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

A:

Q: Q 1: Hot gases passing through a pipe with internal diameter of 4 cm are used to vaporize water in a…

A: Convection heat transfer is given as: Q=hAs (Ts-T∞) Where, h is convection heat transfer…

Q: A fluid flows over a plane surface 1 m by 1 m with a bulk temperature of 50°C. The temperature of…

A:

Q: Question 2 Steam at 320ºC flows in a stainless steel pipe, whose inner and outer diameters are D₁ =…

A:

Q: Consider a 120 mm stainless steel plate (K=45w/m. °C, p=7800kg/m, Cp=50OJ/kg. °C) initially at a…

A:

Q: 3-78E Steam exiting the turbine of a steam power plant at 100°F is to be condensed in a large…

A:

Q: total rate of heat transfer from the cubes to the ambient air, when 2700 cubes are to be annealed…

A: Assumptions 1 The balls are spherical in shape with a radius of r0 = 4 mm. 2 The thermal properties…

Q: Write your answer in 4 decimal places. DO NOT round off intermediate values. Water (Cp = 4180…

A: Given Data Cp= 4180 J/kgK D=4 cm Twi=15°C Two=45°C q=2500 W/m2

Q: 2. You are working at a company that uses cooked eggs in one of your processes. Imagine that you can…

A:

Q: Oil at 350 K enters a thin-Walled pipe at a mass flow rate of 0.015 kg/s and exits at 430 K . The…

A:

Q: A cylindrical electric heater of outside diameter D= 2.5 cm and length L= 2 m is immersed…

A: Write the given data with suitable variables. D=2.5 cm=0.025 m100 cm1 mL=2 mThg=100 °CTh=300 °C

Q: H.W. Q: An aluminum pan whose thermal conductivity is 237 W/m-°C has a flat bottom with diameter 20…

A: Heat transfer by conduction is given by Fourier's law Q=-kAlA dTdx the temperature gradient decrease…

Q: A spherical pellet (ρ =1000 kg/m3 , c = 1000 J/(kg⋅K)) with a radius ro = 1 cm is cooled from an…

A: Given Data ρ =1000 kg/m3 , c = 1000 J/(kg⋅K)   ro = 1 cm  h = 100 W/(m2 K) Ans(a) k = 0.1 W/(m⋅K)…

Q: Oranges of 2.5-in-diameter (k= 0.26 Btu/h·ft·°F) and α= 1.4 10-6 ft2/s) initially at a uniform…

A:

Q: Liquid water flows in a circular tube at a mass flow rate of 0.006 kg/s. The water enters the tube…

A: A mass flow rate of = 0.006 kg/s.The water enters the tube at The average convection heat transfer…

Q: Consider water (at a temperature of 276 K ) flowing inside a cylindrical pipe, having a diameter of…

A:

Q: Air is flowing through a 20 m long pipe of 20 cm diameter at a rate of 0.8 kg/s. The inlet air…

A: Find , Heat transfer rate  Exit temp of air

Q: Air enters a 7-cm-diameter and 5-m-long tube at 65°C and leaves at 15°C. The tube is observed to be…

A: The diameter of the pipe is d=7 cm=0.07 m . The length of the pipe is L=5 m. The convective heat…

Q: In an experiment, the temperature of a hot gas stream is to be measured by a thermocouple with a…

A: Given:The response time of the thermocouple is .The value of .The thermal conductivity is .The…

Q: 2. For a boiling process such as shown in Figure below, the ambient temperature Tin Newton's law of…

A: Given:Heat flux, q=20*105 W/m2Convective heat transfer coefficient of water, hw=20*103…

Q: An ordinary egg can be approximated as a 5.5-cm-diameter sphere whose thermal conductivity of…

A:

Q: A cylindrical rod with a diameter of 20 mm and a length of 300 mm is heated to a temperature of…

A: Write the given data. Diameter, d=20 mm=0.02 mLenght, l=300 mm=0.3 mInitial temperature of rod,…

Q: In an experimental determination of specific heat capacity of air at constant pressure, 50 gm of air…

A: We have, m=50 gm=50×10-3 kgt1=14°C,t2=74°Cγ=CpCv=1.4

Q: To cool a piece of glass, initially at a temperature of 93°C, it is immersed in an aluminum tray,…

A: Given data: Initial temperature of the glass piece = 93°C                     Initial temperature of…

Q: In determining the average rate of heating of a tank of 20% sugar syrup, the temperature at the…

A: To find-: (a) To convert the specific heat into kJkg.oC. (b) The rate of heating in kJs. Given-: The…

Q: For bacteriological testing of water supplies and in medical clinics, samples must routinely be…

A: (a) The heat is taken as Q that is used to fuse the wax. So, the mass of wax is written as There…

Q: Nuclear wastes are packed in a long, cylindrical container. The wastes steadily generate energy at a…

A:

Q: A pure copper cube 3 cm on each side is placed in a 15°C stream of water.If the initial temperature…

A:

Q: Water enters a 2.5-cm-internal-diameter thin copper tube of a heat exchanger at 15°C at a rate of…

A:

Q: Brass plate of 6 cm thickness that are initially at 25 °C are heated by passing it through an oven…

A:

Q: Oranges of 2.5-in-diameter (k = 0.26 Btu/h·ft·°F and a = 1.4 * 1026 ft2/s) initially at a uniform…

A: The parameters of oranges are given as, The average heat transfer coefficient is given as, The…

Q: There is a cylindical piece of nickel, that is 5 cm in diameter and 10 cm in length, that is…

A:

Q: For heat transfer purposes, an egg can be considered to be a 5.5-cm-diameter sphere having the…

A: Given; The diameter of egg, d = 5.5 cm The initial temperature of egg, Ti = 8 C The boiling…

Q: Liquid water flows in a thin-walled circular tube at a mass flow rate of 11 g/s. The water enters…

A: To obtain the solution to the given question, we need to calculate the heat transfer coefficient…

Q: Water at an average temperature of 110°C and an average velocity of 5.5 m/s flows through a 7-m-long…

A:

Q: how long it will take for the thermocouple to read %95 of the initial temperature difference.

A: Given: d=1.2 mm=1.2×103 mk=35 W/m°Cρ=8500 kg/m3Cp=320 J/kg°Ch=65 W/m2°C TO determine: Time take for…

Q: Steam condenses at 100°C on the outer surface of a pipe with a thermal conductivity of 180 J/ms°C.…

A: There are 3 resistances present in the given question that are- 1. Convective surface resistance of…

Q: In an aluminum container weighing 0.30 kg are 0.70 kg of water in thermal equilibrium at a…

A: Given data: mAl=0.3 kgmw=0.7 kgQ=2.5K/minT=70°C Need to determine the flux leaking from the…

Q: A 65 kg beef carcass (k-0.47 w/mK and a-0.13 x10-6 m/s) initially at a uniform temperature of 37 C…

A:

Q: 4-26 Steel rods (p = 7832 kg/m³, c, = 434 J/kg -K, and k = 63.9W/m-K) are heated in a furnace to…

A: The density of the rod is .The specific heat of the rod is .The thermal conductivity of the rod is…