What is the rate of heat loss per meter of pipe

Assignment Help Mechanical Engineering
Reference no: EM13706653

A pipe with OD 6.03cm, ID 4.93cm carries steam at 250deg C with h = 200 W/m^2.K The pipe is covered with 2.5cm of magnesia (85%) insulation followed by 2.5cm of polystyrene (k = .025 W/m.K The outer surface is exposed to air at T = 20 deg C with h = 10 W/m^.K What is the rate of heat loss per meter of pipe?

Reference no: EM13706653

Questions Cloud

Find the final volume and the mass of air : An air pistol contains compressed air in a small cylinder, shown in Fig. P5.134. Assume that the volume is 1 cm3, pressure is 1 MPa, and the temperature is 27°C when armed. A bullet, m = 15 g, acts as a piston initially held by a pin (trigger); when ..
Determine the total deformation of the specimen : The specimen shown has been cut from a 1/4 in.-thick sheet of vinyl ( E = 0.45 X 106 psi) and is subjected to a 350-lb tensile load. Determine ( a) the total deformation of the specimen, (h) the deformation of its central portion BC.
Find the wnet-efficiency-back work ratio-rate of heat input : An Ideal reheats Rankine cycle. From 1 to 2 we go through Turbine 1. Then 2 to 3 we reheat in a steam generator. Then 3 to 4 we go through Turbine 2. Then from 4 to 5 we go through a Condenser. From 5 to 6 we go through a pump.
Contains a two-phase liquid-vapor mixture of refrigerant : A Closed, Rigid tank contains a two-phase liquid-vapor mixture of Refrigerant 22 initially at -20oC with a quality of 50.36%. Energy Transfer by heat into the tank occurs until the refrigerant is at a final pressure of 6 bars. Determine the final tem..
What is the rate of heat loss per meter of pipe : A pipe with OD 6.03cm, ID 4.93cm carries steam at 250deg C with h = 200 W/m^2.K The pipe is covered with 2.5cm of magnesia (85%) insulation followed by 2.5cm of polystyrene (k = .025 W/m.K The outer surface is exposed to air at T = 20 deg C with h = ..
Angular velocity and angular acceleration of the slotted arm : If a slider block C is fixed to the disk that has a constant counter clockwise angular velocity of 4 rad/sec, determine the angular velocity and angular acceleration of the slotted arm AB at the instant shown.
Pressure and specific volume in isentropic compression : Starting from the ideal gas law and the first law of thermodynamics derive the relationship between a) pressure temperature and, b) pressure and specific volume in isentropic compression show detail proof.
Using exponential smoothing with a weight : Using exponential smoothing with a weight of 0.6 on actual values..If sales are $45,000 and $50,000 for 2010 and 2011, what would be the forecast for 2012? (First forecast is equal to the actual value of proceeding year)
How much heat is added to accomplish : A copper vessel of mass 2kg contains 6kg of water. If the initial temperature of the vessel plus water is 20C and the final temperature is 90C, how much heat is added to accomplish this change assuming that there is no heat loss?

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  The mercury in this leg stands 48in below the water what

one leg of a mercury u-tube manometer is connected to a pipe containing water under a gage pressure of 15 lbfin2. the

  Determine the final temperature and the change in volume

refrigerant r-134a with a mass of 0.08 kg is expanded adiabatically from a superheated vapor at 10 bar 40 c to a

  Air passes through a gas turbine system

Air passes through a gas turbine system at a rate of 4.5kg/s. It enters with a velocity of 150m/s and a specific enthalpy of 3000kJ/kg. At exit, the velocity is 120m/s and the specific enthalpy is 2300kJ/kg. The air has a heat loss to the surrounding..

  This should produce saturated ammonia vapor at -20 c in the

a mixing chamber receives 3kgmin ammonia as saturated liquid at -20 c from one line and ammonia at 40 c 300 kpa from

  Determine the thickness of steel plate required for a 2m

determine the thickness of steel plate required for a 2m diameter cylindrical boiler with hemispherical ends if the

  Assuming maximum depth od the lake is less than 400 meters

nasa is designing a mission to explore titan the largest moon of saturn. titan has numerous hydrocarbon lakes

  Calculate athe heat lost by the oil and the cooling water

hot oil cp2.3 kjkg.c at a rate of 2.5 kgs enters an adiabatic exchanger at 180 c and leaves at 150 c. cooling water

  What do the velocity triangles for two axial compressors in

what do the velocity triangles for two axial compressors in series with 50 degree of reaction look like? they have

  What force is the drill bit placing on the surface

Suppose a 24V drill has a current drawn from it that measures 5 amps. The drill bit is 2 inches in diameter. What force is the drill bit placing on the surface if the speed is 25 rpm? Assume the drill has an efficiency of 90%

  If the furnace is 5m in length and the rods enter at 50c at

steel rods of 0.05m diameter are heat treated by being passed through a heat-treating furnace in which the atmosphere

  If we remove both the forces of drag and buoyancy the

trees at the bottom of a lake are approximated as a truncated cone with a base diameter of 6 ft a top diameter of 1 ft

  A frictionless piston-cylinder contains argon which is

a frictionless piston-cylinder contains argon which is initially at 25 deg. c with a volume of 2.2m3. the system is

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd