Calculate the heat-transfer rate and exit temperatures for

Assignment Help Mechanical Engineering
Reference no: EM13620225

An air preheater for a power plant consists of a cross-flow heat exchanger with hot exhaust gases used to heat incoming air a 1 atm and 300 K. The gases enter at 375°C with a flow rate of 5 kg/s. The air flow rate is 5.0 kg/s, and the heat exchanger has A = 110 m2 and U = 50 W/m2 ? °C. Calculate the heat-transfer rate and exit temperatures for two cases, both fluids unmixed and one fluid mixed. Assume the hot gases have the properties of air.

Reference no: EM13620225

Questions Cloud

Find the minimum required diameter of the bolt to the : a structural support is installed within a space craft. the support is made of 7075-t6 aluminum plut t-ult 250 mpa and
Determine net work input per unit mass of air flow in kjkg : air enters the compressor of a brayton refrigeration cycle at 100 kpa 270 k. the compressor pressure ratio is 3 and the
What are the conditions for using the standard deviation : part 1 what are the conditions for using the standard deviation formula when conducting a significance test? be
If the temperature of the surroundings is 300k then : supose you have one mole of an ideal gas t1300k in a container and you want to compress it isothermally by a constant
Calculate the heat-transfer rate and exit temperatures for : an air preheater for a power plant consists of a cross-flow heat exchanger with hot exhaust gases used to heat incoming
What is the final pressure pf in the tires assuming : starting out a trip from a mountain you inflate the tires on your car to a pressure of 321kpa pi when the temperature
What is the expression for calculating the acceleration of : what is the expression for calculating the acceleration of a motor given the moment of inertia and the accelerating
Calculate the posterior probability that you can use the : the claim size for a certain insurance policy is a pareto random variable with density function . the parameter is
What is the maximum torque it can supply at 120 rated speed : if a vsdmotor combination has a torque of 100 n.m at the rated speed and full power what is the maximum torque it can

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Some helium gas leaks out of the container until the final

helium gas which may be treated as an ideal gas with r 386 ft-lbflbm- degree r is contained in a rigid 8-ft3 internal

  A dentist drill is driven by a small high-speed turbine

a dentist drill is driven by a small high-speed turbine operating on compressed air which produces a shaft power output

  20 saturated liquid water by volume at a temperature of

a tank having a volume of 0.05m3 contains 80 saturated vapor and 20 saturated liquid water by volume at a temperature

  The steam is compressed at constant pressure until its

a cylinder contains 2 kg of steam at 200 kpa and 200 c. the steam is compressed at constant pressure until its

  Determine the breaking force ff at each front wheel and the

during a break test the front wheel drive car is stopped from an initial speed of 60 mihr in 175 ft. if it known that

  How long should the roughing section be what pull must the

a roughing section of a broach is to remove stock 3.2 mm deep from a steel surface205 mm long x 50 mm wide each tooth

  Make a mohr circle representation of the stresses in the

the inner surface of a hollow cylinder internally pressurized to 100mpa experiences tangential and axial stresses of

  The cartesian velocity components are uvcosinealpha and

a uniform stream of speed v is inclined at angle alpha from the x-axis. the flow is steadu state and two dimensional

  A total of 200btu of heat is transferred while the pressure

a piston cylinder device contains .5 lbs of water initially at 120 pso and a volume of 2ft3. a total of 200btu of heat

  The uniform work platform which has a mass per unit length

the uniform work platform which has a mass per unit length of 21 kgm is simply supported by cross rods a and b. the

  Find the steady-state temperature of the wire

Verify that heating the wire may be treated as a lumped-capacity process, find the steady-state temperature of the wire and find how long it takes for the temperature of the wire to reach 100°C.

  Use the depriester chart

How do you the bubble point temperature and Vapor mole fractions at the bubble-point for a mixture at 690kPa that is 10.0mol % ethylene, 40.0 mol % ethane, and 50.0 mole % propane. Use the Depriester chart.

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