Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Accounting Posted 17 Aug 2017 My Price 7.00

exhaust-gas temperature

The exhaust-gas temperature leaving a continuously operating furnace is 260°C, and a proposal is being considered to install a heat exchanger in the exhaust-gas stream to generate low-pressure steam at 105°C. the question to be investigate is whether it is economical to install such a heat exchanger, and if so, to find its optimum size. The following data apply: Table year factor year factor year factor 1)--0 (8)--3.008(15)--5.275 2)--0.476(9)--3.376(16)--5.552 3---0.937(10)--3.730(17)--5.801 4--1.379(11)--4.060(18)--6.058 5--1.810(12)--4.384(19)--6.295 6--2.224(13)--4.696(20)--6.5 7--2.622(14)--5.002(21)--6.703 Flow of exhaust gas-----7.5kg/s Specific heat of exhaust gas---1.05kJ/(kg*k) Value of the heat in the form of steam---$1.5 per gigajoule U value of heat exchanger based on gas-side area---23W/(m^2*K) Cost of the heat exchanger including installation based on gas-side area----$90 per square meter Interest rate----8% Life of installation----5years Saturated liquid water enters heat exchanger at 105°C and leaves as saturated vapor 1) Develop the equation for the saving as a function of the area, expressed as a uniform annual amount.

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Maurice Tutor
(5)
Status NEW Posted 17 Aug 2017 10:08 PM My Price 7.00

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