Question

Exhaust gas flows through a 45 mm diameter steel pipe, except that a refrigerant evaporates. The...

Exhaust gas flows through a 45 mm diameter steel pipe, except that a refrigerant evaporates. The inlet temperature of the exhaust gas flowing through the pipe at a film temperature of 3400 W / m2K at a rate of 7500 cm / sec is 73 ° C and the outlet temperature is 17 ° C. Outside the pipe, the refrigerant evaporates at -10 ° C.
a) Find the length of the pipe.
b.) Determine the amount of heat that has passed.
(Air table will be used for exhaust gas.)

Engineering   Mechanical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A gas flows through a long pipe of constant diameter. The outlet of the pipe is...
A gas flows through a long pipe of constant diameter. The outlet of the pipe is higher than the inlet, and the pressure of the gas at the outlet is less than the inlet pressure. The gas temperature is constant throughout the pipe and the system is in steady state. a) How do the mass flow rates at the inlet and outlet temperature compare? The densities? The volumetric flow rates (assume ideal gas)? What about the change in potential energy...
Hydraulic oil is flowing through a 80 mm diameter horizontal pipe with a flow rate of...
Hydraulic oil is flowing through a 80 mm diameter horizontal pipe with a flow rate of 1.5 litres per -3 second. At a certain point the diameter changes to 5 cm. Assume the oil’s density is 870 kg.m . (a) Calculate the velocity in SI units through the wider diameter section of the pipe. (b) Calculate the velocity in SI units through the narrower section of the pipe. (c) What is the pressure difference between the larger and smaller sections...
Gas with a thermal conductivity of k = 0.04 W/mk and prandtl number of 0.7 is...
Gas with a thermal conductivity of k = 0.04 W/mk and prandtl number of 0.7 is flowing at anaverage velocity of 0.5 m/s through a 2 mm diameter tube at a Reynolds number of 50. The heat capacity rate for the gas flowing through the tube is 0.001 kJ/s. The inlet temperature of the gas is 20C. There is a constant heat flux of 200 W/m^2 transferred from the tube wall into the gas. a) What is the Nu at...
Steam at an average temperature of ?∞= 400°C flows through a steel pipe. The inner and...
Steam at an average temperature of ?∞= 400°C flows through a steel pipe. The inner and outer radii of the pipe are r1 = 4 cm and r2 = 4.5 cm, respectively, and the outer surface of the pipe is insulated with a layer of 50 mm thick-calcium silicate of thermal conductivity of k = 0.5 W/m.K, and is maintained at 350 °C. If the convection heat transfer coefficient on the inner surface of the pipe is h = 65...
Soru 5) An uninsulated steam pipe with an outside diameter of 57 mm passes through a...
Soru 5) An uninsulated steam pipe with an outside diameter of 57 mm passes through a room in the basement. If the pressure of the saturated steam is 200 kPa and the room temperature is 15 oC, compare the results by calculating the amount of heat transfer from 1 m of the pipe to the room separately using natural convection and condensation heat transfer routes. Take the pipe surface temperature 120 oC.
Methane gas is being pumped through a 305-m length of 52.5-mm-ID steel pipe at the rate...
Methane gas is being pumped through a 305-m length of 52.5-mm-ID steel pipe at the rate of 41.0 kg/(m2 · s). The inlet pressure is p1 = 345 kPa abs. Assume isothermal flow at 288.8 K. p2 = 298.4 kPa. What is the velocity (V2) at the end of the pipe? The viscosity is 1.04 × 10?5 Pa · s. (Answer V2= 20.62 m/s, show all work)
A 2 cm thick steel pipe (thermal conductivity = 43 W/[m.C]) with 6 cm inside diameter...
A 2 cm thick steel pipe (thermal conductivity = 43 W/[m.C]) with 6 cm inside diameter is being used to convey steam from a boiler to process equipment for a distance of 40 m. The inside pipe surface temperature is 115 degrees C, and the outside pipe surface temperature is 90 degrees C. Calculate the total heat loss to the surroundings under steady-state conditions.
A 12 meter long and 12 mm inner diameter smooth pipe is used to heat a...
A 12 meter long and 12 mm inner diameter smooth pipe is used to heat a liquid in an industrial process. The liquid enters the pipe at a temperature of 25o C and a mean velocity of 0.80 m/s. A uniform heat flux is maintained by an electric resistance heater wrapped around the outer surface of the pipe so that the fluid exits at 75o C. The fluid average properties are ? = 1000 kg/m3 , Cp = 4000 J/kg·K,...
A concentric tube heat exchanger is comprised of a stainless steel (ks = 40 W/mK) inner...
A concentric tube heat exchanger is comprised of a stainless steel (ks = 40 W/mK) inner pipe, NPS 2- nominal schedule 40 size (corresponding to an inner diameter of 52.5 mm and an outer diameter of 60.3 mm), and an outer stainless steel pipe of NPS 3-nominal schedule 40 (ID = 77.9 mm, OD = 88.9 mm). The heat exchanger has an effective length of 35 m. The inner pipe fluid is ammonia (?a = 0.3 · 10?6 m2/s, cpa...
Used engine oil flows at 0.025 m/s through a 12.5-mm-diameter tube. The oil enters the tube...
Used engine oil flows at 0.025 m/s through a 12.5-mm-diameter tube. The oil enters the tube at a temperature of 27 ºC, while the tube surface temperature is maintained at 87º C. Determine the oil outlet temperature for a 100-m and the total heat transfer.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT