Calculate the temperatures when the water rate is reduced

Assignment Help Mechanical Engineering

Reference no: EM13639037

Water (specific heat 4.2 kj/kg C) at the rate of 120 kg/min is heated from 20 to 70 C by an oil having a specific heat of 2.0 Kj/KgC in a counter-flow double-pipe heat exchanger. Oil enters at the temperature of 120 C and leaves at 40 C. The overall heat transfer coefficient is 250 W/m2C.
Calculate the area required for the exchanger.
Using the same inlet temperatures of the above problem, calculate the temperatures when the water rate is reduced by 30%. What is the total heat transfer under this new condition ?

Reference no: EM13639037

Questions Cloud

Using the ideal gas model with constant specific heats : nitrogen gas is contained in a rigid 1-m tank initially at 10 bar 300k. heat transfer to the contents of the tank

A compound consists of 600 carbon 267 oxygen and 133 : the einstein equation emc2nbspshows that 1.0g of matteris the equivalent of 2.1 x 1010nbspkcal. when 2.0 g ofhydrogen

A cd has a playing time of 474 minutes when the music : a cd has a playing time of 47.4 minutes. when the music starts the cd is rotating at an angular speed of 512

Assuming the slapping hand has a mass of 12 kg and about : if you ever slapped someone or got slapped yourself you probably remember the burning sensation. imagine you had the

Calculate the temperatures when the water rate is reduced : water specific heat 4.2 kjkg c at the rate of 120 kgmin is heated from 20 to 70 c by an oil having a specific heat of

A simple pendulum makes 120 complete oscillations in 300 : a simple pendulum makes 120 complete oscillations in 3.00 min at a location where g 9.80 ms2. find a the period of the

An airport limousine can accommodate up to four passengers : an airport limousine can accommodate up to four passengers on any one trip. the company will accept a maximum of six

Determine the rate of entropy production in kwk a for the : work at a rate of 25 kw is done by a paddle wheel on a slurry contained within a closed rigid tank. heat transfer from

A parallel-plate capacitor has an area of 540 cm2 and the : a parallel-plate capacitor has an area of 5.40 cm2 and the plates are separated by 1.20 mm. the capacitor stores a

User Account

All Pages