A 2-m-diameter thin-walled stainless steel spherical tank is filled with chemicals undergoing a reaction. The reaction releases heat through the tank, where the tank outer surface temperature is 50°C and is exposed to air at 20°C. The stainless steel surface of the tank has an emissivity of 0.35. Determine the rate of heat release from the chemical reaction inside the tank. Is the given emissivity value reasonable for a stainless steel surface? What is the contribution of natural convection to the overall rate of heat loss at the tank surface?

Q: Consider a person whose exposed surface area is 1.7 m², emissivity is 0.7, and surface temperature…

A: (a) Write the given data. A=1.7 m2ε=0.7Ts=32 °C=305 KTw=300 K

Q: For a natural convection from the vertical plates, if Rayleigh number is given as 1 × 101º then the…

A: Given, Rayleight number = Ra = 1 x 1010   For 109 < Ra < 1012, nusselt number (Nu) can be…

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: At 2pm in the afternoon, the surface temperature was 70 deg. F and 560 W/m2 of solar radiation was…

A:

Q: A person stands in front of a fire at 650 C in a room where air is at 5°C. Assuming the body…

A: Given data T = 650° C  Temperature of air = 5°C Body temperature = 37°C Coefficient of conduction =…

Q: A steel plate having a thickness of 100 mm is suddenly exposed to a hot gas at 1000 oC in a furnace.…

A:

Q: The door of an oven in the kitchen of a house is 0.5 m high and 0.7 m wide. When the oven is…

A: Given, Outside temperature of the door, To=32°C=32+273 K=305 K   Temperature of the room,…

Q: A man is working in a chamber enclosed with black walls. If the air around the worker is at 20oC,…

A: Given data: Tw=100°C=373 KTair=20°Ch=15 W/m2°Cε=0.8 Need to determine the temperature will the…

Q: Consider a person whose exposed surface area is 1.7 m², emissivity is 0.7, and surface temperature…

A: Given data: A=1.7 m2ε=0.7Tper=32°C=305 K Need to determine the heat loss by the person.

Q: Estimate the rate of heat transfer (J/s) from a 50.6°C sphere which has an emissivity of 0.2 if it…

A:

Q: Q3: Consider a (15cm x 20cm) printed circuit board (PCB) that has electronic components on one side…

A: Given data: Calculate the average temperature of the surrounding.

Q: Does any of the energy of the sun reach the earth by conduction or convection?

A: Since there is no atmosphere in space between the Sun and the earth, the significant portion of the…

Q: explain why summer is warmer than winter. Specifically, how can summer be warmer than winter if…

A: Two factors make it warmer in the summer: (1) the Sun is higher in the sky, which means more direct…

Q: Consider a person whose exposed surface area is 1.5 m2, emissivity is 0.5, and surface temperature…

A:

Q: A 50-cm x 50-cm circuit board that contains 121 square chips on one side is to be cooled by combined…

A:

Q: In the summer, parked automobile surfaces frequently average 104 °F to 50°C and surface emissivity…

A:

Q: Consider a person standing in a room. The inner surfaces of the walls, floors, and ceiling of the…

A:

Q: A 18-m-long section of a 14-cm-diameter horizontal hot water pipe passes through a large room whose…

A:

Q: Consider a person standing in a room with a temperature of 22°C throughout moment. It is observed…

A: To find: The heat transfer by radiation (Q). Given: The exposed surface area, A = 1.4 m2. The…

Q: Two very large walls are at constant temperature of 463oF and 887 oF. Assuming that the walls behave…

A:

Q: Determine the average temperature of the hot surface of the board, assuming the board is horizontal…

A: Given: PCB of 23 cm x 28 cm Board is horizontal, and hot surface facing up T∞=20°CHeat dissipated,…

Q: A certain 1m body at 20 C is display on a top of a building during the night. the body sees nothing…

A: Given data , e= 0.9  Temperature to be maintained is  T= 23°C= 296 K  T1=110 K  t= 20°C

Q: 16-51 Consider a person whose exposed surface area is 1.7 m², emissivity is 0.5, and surface…

A: “Since you have posted multiple questions, we will provide the solution only to the first question…

Q: 2. Consider steady heat transfer between two large parallel plates at constant temperatures of T1 =…

A: Given data: T1=295 KT2=155 KL=2 cm Need to determine the rate of heat transfer.

Q: Consider a person standing in a room kept at 22°C at all times. It was observed that the interior…

A: According to the information we know have to Take an individual in a room always kept at 295°K. The…

Q: Consider steady heat transfer between two large parallel plates at constant temperatures T1 = 300 K…

A:

Q: A 1.2 m wide and 5.1 m long solar collector is mounted to a roof.  Now the average surface…

A: Given width of solar collector w=1.2 m Length of solar collector l=5.1 m Average surface temperature…

Q: In a concentrated solar power plant, molten salt tank is used to store the thermal energy from the…

A:

Q: a certain body at 20 C is display on a top of a building during the night. the body sees nothing but…

A: Given data,  T1= 20°C = 293K  T=23°C = 296 K  To=110 K  ε= 0.92  Let the Stefan Boltzmann constant…

Q: Explain the following terms related to the radiation mode of heat transfer: Black body, emissive…

A: To explain- Black body - Emissive power- monochromatic emissive power- gray body- white body- opaque…

Q: Consider a person standing in a breezy room at 24C. Determine the total rate of heat transfer from…

A:

Q: (b) Consider a person standing in a room maintained at 25°C at all times. The inner surfaces of the…

A: Given datafor winterTsur=15°Cfor summerTsurr=28°CA=1.5m2Ts=30°Cε=0.95

Q: Consider a person standing in a room maintained at20°C at all times. The inner surfaces of the…

A: