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4. A pure copper pipe with inner diameter Di-10 mm ard outer diameter Do-14 mm is surrounded by s...
CORRECTION: Ts,o in part (c) should be in KELVIN not celsius (322.1 K)
CORRECTION: Ts,o in part (c) should be in KELVIN not
celsius (322.1 K)
. A pure copper pipe with inner diameter D, 10 mm and outer diameter D 14 mm is surrounded by saturated steam with pressure p = 172 bar and convection coefficient h.-6000 carries water with mean velocity um 1 ! (a) Determine the convective heat transfer coefficient inside the pipe for water at mean temperature Tm-37°C (b) At this same location, determine the total thermal resistance (per...
6. A pure copper pipe with inner diameter Di = 12 mm and outer diameter Do-15...
6. A pure copper pipe with inner diameter Di = 12 mm and outer diameter Do-15 mm is surrounded by saturated steam with pressure p 08 bar and convection coefficient h,-7000R. The pipe carries water with a convection coefficient h _ 5000 m2 R. Determine the steam condensation rate (per unit length) around the pipe at the location where the mean water temperature reaches 95°C.
3. The annular pipe arrangement shown in the figure below is made of stainless steel and the oute...
3. The annular pipe arrangement shown in the figure below is made of stainless steel and the outer surface is insulated. Air flows through the central pipe with a mass flow rate, ma0.026 kg/s. Water flows through the annular region with a mass flow rate, mw-0.58 kg/s. At the given position along the pipe the bulk temperature of the air, Ta-100°C, and the bulk temperature of the water, Tw- s 10°C. The thermal conductivity of stainless steel, kss 15 W/mK....
(c) Steam flows a pipe of external diameter 30 mm, where the pipe outer surface temperature...
(c) Steam flows a pipe of external diameter 30 mm, where the pipe outer surface temperature is 130oC. Circular annular fins (k = 180 W·m-1·K-1) of outer diameter 60 mm and thickness 1 mm are fitted tightly to the pipe. Heat is transferred by convection (h=10 W·m-2·K-1) to the surrounding air at 20oC. (i) Determine the efficiency of a single fin. (ii) Determine the heat transfer rate for a single fin. (8 marks) (6 marks) (iii) Determine the effectiveness of...
A vertical tube has an outer diameter of 150 mm. The pipe is 4 m long...
A vertical tube has an outer diameter of 150 mm. The pipe is 4 m
long and the outdoor temperature is 60 C. The room temperature is
20 oC. The heat transfer coefficient,
,for the air is 6
Calculate heat transfer / heat flow / heat output W from pipe to
air.
A vertical tube has an outer diameter of 150 mm. The pipe is 4 m
long and the outdoor temperature is 60 oC. The room temperature is
20...
Problem 3 (30): Steam at Too,1 340 °C flows in a cast iron pipe [k- 80 W/m.°C] whose inner and outer diameter are Di 6 cm and D2 -8 cm, respectively. The pipe is covered with a 4-cm thick glass wool...
Problem 3 (30): Steam at Too,1 340 °C flows in a cast iron pipe [k- 80 W/m.°C] whose inner and outer diameter are Di 6 cm and D2 -8 cm, respectively. The pipe is covered with a 4-cm thick glass wool insulation [k-0.05 W/ m°C]. Heat is lost to the surroundings at Too,2 - 21°C by natural convection and radiation, with a combined heat transfer coefficient of h- 18 W/m2 °C. Taking the heat transfer coefficient inside the pipe to...
Please provide a step-by-step solution to this problem. Heat Transfer 1. The material should be f...
Please provide a step-by-step solution to this problem. Heat
Transfer 1. The material should be from the textbook (Fundamentals
of Heat and Mass Transfer) or similar
3. The annular pipe arrangement shown in the figure below is made of stainless steel and the outer surface is insulated. Air flows through the central pipe with a mass flow rate, ma0.026 kg/s. Water flows through the annular region with a mass flow rate, mw 0.58 kg/s. At the given position along the...
A stainless pipe having an inner wall thickness of 5 cm, an outer wall thickness of...
A stainless pipe having an inner wall thickness of 5 cm, an outer wall thickness of 5.5 cm and a thermal conductivity of 15 W/m˚C transfers steam at 320˚C from one location to another. The pipe is insulated with a 3 cm thick glass wool having a thermal conductivity of 0.038 W/m˚C. Heat is lost to the surroundings by natural convection and radiation at a rate of 15 W/m2˚C and the heat transfer coefficient inside the pipe is 80 W/m2˚C....
Problem 1. Steam at 120°C is transported in a long 8" outer diameter pipe. Its outer surface is c...
Problem 1. Steam at 120°C is transported in a long 8" outer diameter pipe. Its outer surface is covered with a 1" thick fiberglass (thermal conductivity, 0.05 W/(mK)) insulation. When the outer temperature is 0°C, the rate of condensation of steam is measured to equal 0.06 g per meter of the pipe length. Estimate the heat transfer coefficient. The heat of vaporization of the steam is 2600 J/g. The resistance to the heat transfer through the pipe wall may be...
6 Water is heated in a pipe by exchanging heat with a warmer fluid that flows outside the pipe. Inside diameter of the pipe is dn 0.045 m and outside diameter dour0.05 m. Mean velocity of the water i...
6 Water is heated in a pipe by exchanging heat with a warmer fluid that flows outside the pipe. Inside diameter of the pipe is dn 0.045 m and outside diameter dour0.05 m. Mean velocity of the water in the pipe is um-0.31 m/s and the bulk temperature is 323 K (density 988 kg m-3; viscosity 0.00055 kg m' sı. Pr 3.56, thermal conductivity k 0.64 W m1 Kt). The material of the pipe has thermal conductivity k 0.61 W...
CORRECTION: Ts,o in part (c) should be in KELVIN not
celsius (322.1 K)
. A pure copper pipe with inner diameter D, 10 mm and outer diameter D 14 mm is surrounded by saturated steam with pressure p = 172 bar and convection coefficient h.-6000 carries water with mean velocity um 1 ! (a) Determine the convective heat transfer coefficient inside the pipe for water at mean temperature Tm-37°C (b) At this same location, determine the total thermal resistance (per...
6. A pure copper pipe with inner diameter Di = 12 mm and outer diameter Do-15 mm is surrounded by saturated steam with pressure p 08 bar and convection coefficient h,-7000R. The pipe carries water with a convection coefficient h _ 5000 m2 R. Determine the steam condensation rate (per unit length) around the pipe at the location where the mean water temperature reaches 95°C.
3. The annular pipe arrangement shown in the figure below is made of stainless steel and the outer surface is insulated. Air flows through the central pipe with a mass flow rate, ma0.026 kg/s. Water flows through the annular region with a mass flow rate, mw-0.58 kg/s. At the given position along the pipe the bulk temperature of the air, Ta-100°C, and the bulk temperature of the water, Tw- s 10°C. The thermal conductivity of stainless steel, kss 15 W/mK....
A vertical tube has an outer diameter of 150 mm. The pipe is 4 m
long and the outdoor temperature is 60 C. The room temperature is
20 oC. The heat transfer coefficient,
,for the air is 6
Calculate heat transfer / heat flow / heat output W from pipe to
air.
A vertical tube has an outer diameter of 150 mm. The pipe is 4 m
long and the outdoor temperature is 60 oC. The room temperature is
20...
Problem 3 (30): Steam at Too,1 340 °C flows in a cast iron pipe [k- 80 W/m.°C] whose inner and outer diameter are Di 6 cm and D2 -8 cm, respectively. The pipe is covered with a 4-cm thick glass wool insulation [k-0.05 W/ m°C]. Heat is lost to the surroundings at Too,2 - 21°C by natural convection and radiation, with a combined heat transfer coefficient of h- 18 W/m2 °C. Taking the heat transfer coefficient inside the pipe to...
Please provide a step-by-step solution to this problem. Heat
Transfer 1. The material should be from the textbook (Fundamentals
of Heat and Mass Transfer) or similar
3. The annular pipe arrangement shown in the figure below is made of stainless steel and the outer surface is insulated. Air flows through the central pipe with a mass flow rate, ma0.026 kg/s. Water flows through the annular region with a mass flow rate, mw 0.58 kg/s. At the given position along the...
Problem 1. Steam at 120°C is transported in a long 8" outer diameter pipe. Its outer surface is covered with a 1" thick fiberglass (thermal conductivity, 0.05 W/(mK)) insulation. When the outer temperature is 0°C, the rate of condensation of steam is measured to equal 0.06 g per meter of the pipe length. Estimate the heat transfer coefficient. The heat of vaporization of the steam is 2600 J/g. The resistance to the heat transfer through the pipe wall may be...
6 Water is heated in a pipe by exchanging heat with a warmer fluid that flows outside the pipe. Inside diameter of the pipe is dn 0.045 m and outside diameter dour0.05 m. Mean velocity of the water in the pipe is um-0.31 m/s and the bulk temperature is 323 K (density 988 kg m-3; viscosity 0.00055 kg m' sı. Pr 3.56, thermal conductivity k 0.64 W m1 Kt). The material of the pipe has thermal conductivity k 0.61 W...
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