Consider two concentric horizontal cylinders of diameters 55 cm and 65 cm, and length 125 cm. The surfaces of the inner and outer cylinders are maintained at 54C and 106C, respectively. If the annular cavity is filled with (a) water and (b) Air. With natural transport between rollers find the speed of heat transfe

Q: A pure copper 10 mm diameter sphere initially at 227°C is hanging in a furnace where air at 827 C…

A: Given: The diameter of the pure copper, d = 10 mm The initial temperature of the sphere, T1 = 227o…

Q: Q3 a) A person extends his uncovered arms into the windy air outside at 10°C and 50 km/h (Figure 3).…

A:

Q: Two nested spherical tanks with the internal and outer diameters of the 100 cm by 104 cm and 114 cm…

A: Heat transfer through composite sphere   Lets, Q = Heat transfer rate th = Temperature of hot fluid…

Q: During a cooling process, perature of an object is 15°C. This temperature change on the Kelvin scale…

A:

Q: How much air is used per kg of coal boiler having a chimney of 35 m height to create draft of 20 mm…

A: The answer is in next step

Q: A long pipe carrying hot water loses heat to the ambient air. The heat loss was measured to be 480…

A: To find: The convection coefficient of the air. Given: The heat flux is q˙=480 W/m2. The temperature…

Q: A 2-m-long, 4-cm-diameter electrical wire extends across a room at 20°C, as Shown in Fig. below.…

A: The length of the rod is .The diameter of the rod is .The surrounding temperature is The surface…

Q: An array of power transistors, dissipating 6W of power each, are to be cooled by mounting them on a…

A:

Q: Water at 10°C is is flowing at 0.8 m/s across a long cylinder that is made of a material that…

A:

Q: A 6-cm-diameter steel rod at 38°C is suddenly immersed in a liquid at 93°C with h =110 W/m²·K. How…

A: given; ⇒conductivity of carbon steel (K1)=49.8w/m. K⇒conductivity of stainless steel (K2)=13w/m.…

Q: Wind (v=1.5 m/s) at -10 oC blows at right angle to the surface of a standing student considered…

A: Wind velocity, V=1.5 m/s Wind temperature, Ta=-10oC Diameter, D=25cm=0.25m Length, L=170m Surface…

Q: Rock has often been suggested as a medium for the thermal storage of energy. A cylindrical piece of…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: One person can serve a quick drink of 5 cm diameter and 12 cm high cans for their guests. put it in…

A:

Q: Determine the total heat transfer rate to the ice water.

A: Given:   To determine:the total heat transfer rate to the ice water

Q: A 20 cm-diameter-copper cylinder is to be heated from 50 °C to an average temperature of 150 °C with…

A:

Q: Palm oil with a density of 1200 kg/m3 and the specific heat of 2 kJ/(kg.K) is to be heated from 20oC…

A: Given: Density, ρ- 1200 kg/m3 Specific heat, Cp - 2 kJ/kg.K Diameter, D - 2 m Height, H - 2 m To…

Q: Assuming that adding 5-cm of insulation drops the U-value of a building from 1.36 to 0.556 W/m2- °C,…

A:

Q: A 4 m2window has a surface temperature of 30°C and the outside wind isblowing air at 5°C across it…

A: Data given -  A = 4 m2  Ts = 30°C  Ta = 5°C  h = 200 W/m2K

Q: What is the rate of heat loss through a 4-cm Fiberglass wall of the inside temperature is 22 °C and…

A:

Q: Tong ransfer c of secc nionor

A:

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

A:

Q: A 4.74 -m-internal-diameter spherical tank made of 1.5- cm-thick stainless steel (k = 15 W/m.°C) is…

A:

Q: A 2-m2 window has a surface temperature of 15°C, and the outside wind is blowing air at 2° C across…

A: Data given-  A = 2 m2  Tsurface = 15°C  Tair = 2°C  h = 125 W/m2 K

Q: A long copper plate (k= 374 W/m °C, a temperature of 250 °C. Both outer surfaces are suddenly…

A: thickness of the plate, L= 20cm = 0.2m K = 374W/mc. α = 11123x10-5 m/s Initial temperature, Ti =…

Q: The top surface of the passenger car of a train moving at a velocity of 115 km/h is 2.8 m wide and 8…

A: To find : The equilibrium temperature of the top surface of the car . Given: The velocity of train…

Q: Consider a hot baked potato. Will the potato cool faster or slower when we blow the warm air com ing…

A: It will cool faster in case of warm air coming from lung.

Q: Q3) Consider a 1.2 m high shown in Figure, consisting of two 3 mm thick of glass (k 0.78 W/m."C)…

A: The heat transferred through the wall can be calculated using the formula given below as- Q=kA∆Tl…

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: 1 kg aluminum dumbbell initially held 2 meters above the floor is allowed to fall. This experiment…

A: The Law of conservation of energy is a universal concept of thermodynamics. It states that energy…