Question

Steam at 120°C is flowing through a wrought-iron (k=59 W/m K) tube of ID=5 cm and OD=7 cm which is covered with 1 cm thick asbestos (k=0.1105 W/m K) insulation. If the convection heat transfer coefficients at the inner and outer surfaces of the tube are 200 W/m² K and 10 W/m² K, respectively, and the atmospheric air is at 25°C, estimate the rate of heat losses from steam per meter length of the tube. Assume that the steam in the tube is held at a constant temperature.

Name: steam at 120c is flowing through a wrought iron k59 wm k tube of id5 cm and od7 cm which is covered with 1 cm thick asbestos k01105 wm k insulation if the convection heat transfer coefficien 80008
Uploaded: 2023-09-17T06:24:49-08:00
Duration: 5 min 11 s
Channel: Adi S
Description: steam at 120c is flowing through a wrought iron k59 wm k tube of id5 cm and od7 cm which is covered with 1 cm thick asbestos k01105 wm k insulation if the convection heat transfer coefficien 80008

          Steam at 120°C is flowing through a wrought-iron (k=59 W/m K) tube of ID=5 cm and OD=7 cm which is covered with 1 cm thick asbestos (k=0.1105 W/m K) insulation. If the convection heat transfer coefficients at the inner and outer surfaces of the tube are 200 W/m² K and 10 W/m² K, respectively, and the atmospheric air is at 25°C, estimate the rate of heat losses from steam per meter length of the tube. Assume that the steam in the tube is held at a constant temperature.

Added by Suzanne A.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Adi S

09/17/2023

Step 1

The thermal resistance of the tube can be calculated using the formula: R_tube = ln(OD/ID) / (2πk_tubeL) where OD is the outer diameter of the tube, ID is the inner diameter of the tube, k_tube is the thermal conductivity of the tube material, and L is the Show more…

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Steam at 120°C is flowing through a wrought-iron (k=59 W/m K) tube of ID=5 cm and OD=7 cm which is covered with 1 cm thick asbestos (k=0.1105 W/m K) insulation. If the convection heat transfer coefficients at the inner and outer surfaces of the tube are 200 W/m² K and 10 W/m² K, respectively, and the atmospheric air is at 25°C, estimate the rate of heat losses from steam per meter length of the tube. Assume that the steam in the tube is held at a constant temperature.