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Example 3 Steam at...
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...
art II- Show your work 17 Marks team at 320°C flows in a stainless steel pipe...
art II- Show your work 17 Marks team at 320°C flows in a stainless steel pipe (kr 15 W/m "C) whose inner and outer diameters are 5 em and 5.5 cm, respectively. The pipe is covered with 3-cm-thick glass wool insulation (k 0.038 W m·°C). Heat is lost to the surroundings at 5°C by natural convection and radiation, with a combined natural convection and radiation heat transfer coefficient of hi-15 w/m.。C. The convective heat transfer coefficient inside the pipe to...
Steam at T = 300C flows in a cast iron pipe shell with thermal conductivity k1=80W/mC,...
Steam at T = 300C flows in a cast iron pipe shell with thermal conductivity k1=80W/mC, inner and outer diameter D1 = 5cm, and D2 =6cm respectively, and length L = 1m (notice that the cast iron pipe shell is a zone of conduction physically realized by the space between two concentric cylinders). The heat transfer coefficient for the steam inside the pipe is h1 = 60 W/m2. Furthermore, heat is lost to the surroundings at T2 = 5C through...
Steam at 150 °C flows in a stainless steel pipe which has a thermal conductivity of...
Steam at 150 °C flows in a stainless steel pipe which has a thermal conductivity of 16 W m-1 K -1 whose inner and outer diameters are 5 and 6 cm respectively. The pipe is covered with 3 cm think insulation having a thermal conductivity of 0.035 W m-1 K -1 . The combined convection and radiation heat transfer coefficient at the outside surface of the insulation is 20 W m-2 K -1 and the surroundings are at 10 °C....
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....
I. Steam at 220°C İs transported through an AISI 101 0 carbon steel pipe. The inside...
I. Steam at 220°C İs transported through an AISI 101 0 carbon steel pipe. The inside and outside diameters of the pip glass pipe insulation. e are 12 and 13 cm respectively. The pipe is wrapped with 5 cm thick cellular The ambient air temperature is 8°C. The inside and outside convection heat nts are 95 and 15 W/m2-K respectively. The thermal conductivity of the pipe is 60 W/m-K and for the insulation it is 0.072 W/m-K a. Construct the...
Steam in a heating system flows through tubes whose outer diameter is D1 =3 cm and...
Steam in a heating system flows through tubes whose outer
diameter is D1 =3 cm and whose walls are maintained at a
temperature of 120oC. Circular aluminum fins (k = 180
W/m.oC) of outer diameters D2 = 6 cm and
constant thickness t = 2mm are attached to the
tubes. The space between the fins is 3 mm. Heat is
transferred to the surrounding air at
T∞ = 25 oC, with a
convection heat transfer coefficient of h = 60
W/m2.oC.
Determine the...
QUESTION 1 (10 marks) a) Write the Newton's law of heat convection in fluid using convection heat transfer coef...
QUESTION 1 (10 marks) a) Write the Newton's law of heat convection in fluid using convection heat transfer coefficient, h (Wm2.K). Please explain the equation in terms of its driving force and resistancC (2 marks) (POUCOI/C2) b) Define the heat transfer rate, q,by inside and outside convection and wall conduction considering a stainless steel cylindrical pipe (inside radius, ri and outer radius, ) with fiberglass insulator (radius, s) in ą steady state condition as shown in Figure Q11 Steam with...
a 0.4 m diameter, thin walled steel pipe is used to transport saturated steam Problem 3.049...
a 0.4 m diameter, thin walled steel pipe is used to transport
saturated steam
Problem 3.049 A 0.4-m-diameter, thin-walled steel pipe is used to transport saturated steam at a pressure of 20 bars in a room for which the air temperature is 25°C and the convection heat transfer coefficient at the outer surface of the pipe is 20 W/m2-K. (a) What is the heat loss per unit length from the bare pipe (no insulation)? (b) Estimate the heat loss per...
HW3.3. A cylindrical steel pipe is used to carry water steam with an averaged heat transfer...
HW3.3. A cylindrical steel pipe is used to carry water steam with an averaged heat transfer coefficient of h 150 W/m2-K at Ti- 100 °C. The steel pipe goes through the roof of a factory where the ambient temperature is 23°C (To), with a natural heat convection coefficient of 5 W/m2-K. The inner and outer diameters of the steel pipe are 2 cm and 2.2 cm, respectively, and thermal conductivity of the steep pipe is k, -20 W/m-K To prevent...
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...
art II- Show your work 17 Marks team at 320°C flows in a stainless steel pipe (kr 15 W/m "C) whose inner and outer diameters are 5 em and 5.5 cm, respectively. The pipe is covered with 3-cm-thick glass wool insulation (k 0.038 W m·°C). Heat is lost to the surroundings at 5°C by natural convection and radiation, with a combined natural convection and radiation heat transfer coefficient of hi-15 w/m.。C. The convective heat transfer coefficient inside the pipe to...
I. Steam at 220°C İs transported through an AISI 101 0 carbon steel pipe. The inside and outside diameters of the pip glass pipe insulation. e are 12 and 13 cm respectively. The pipe is wrapped with 5 cm thick cellular The ambient air temperature is 8°C. The inside and outside convection heat nts are 95 and 15 W/m2-K respectively. The thermal conductivity of the pipe is 60 W/m-K and for the insulation it is 0.072 W/m-K a. Construct the...
Steam in a heating system flows through tubes whose outer
diameter is D1 =3 cm and whose walls are maintained at a
temperature of 120oC. Circular aluminum fins (k = 180
W/m.oC) of outer diameters D2 = 6 cm and
constant thickness t = 2mm are attached to the
tubes. The space between the fins is 3 mm. Heat is
transferred to the surrounding air at
T∞ = 25 oC, with a
convection heat transfer coefficient of h = 60
W/m2.oC.
Determine the...
QUESTION 1 (10 marks) a) Write the Newton's law of heat convection in fluid using convection heat transfer coefficient, h (Wm2.K). Please explain the equation in terms of its driving force and resistancC (2 marks) (POUCOI/C2) b) Define the heat transfer rate, q,by inside and outside convection and wall conduction considering a stainless steel cylindrical pipe (inside radius, ri and outer radius, ) with fiberglass insulator (radius, s) in ą steady state condition as shown in Figure Q11 Steam with...
a 0.4 m diameter, thin walled steel pipe is used to transport
saturated steam
Problem 3.049 A 0.4-m-diameter, thin-walled steel pipe is used to transport saturated steam at a pressure of 20 bars in a room for which the air temperature is 25°C and the convection heat transfer coefficient at the outer surface of the pipe is 20 W/m2-K. (a) What is the heat loss per unit length from the bare pipe (no insulation)? (b) Estimate the heat loss per...
HW3.3. A cylindrical steel pipe is used to carry water steam with an averaged heat transfer coefficient of h 150 W/m2-K at Ti- 100 °C. The steel pipe goes through the roof of a factory where the ambient temperature is 23°C (To), with a natural heat convection coefficient of 5 W/m2-K. The inner and outer diameters of the steel pipe are 2 cm and 2.2 cm, respectively, and thermal conductivity of the steep pipe is k, -20 W/m-K To prevent...
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