User Account

All Pages

Draw a schematic diagram of the process

Assignment Help Mechanical Engineering
Reference no: EM13881872

A process tank has two input streams-Stream 1 at mass flow rate w1 and Stream 2 at mass flow rate w2. The tank's effluent stream, at flow rate w, discharges through a fixed valve to atmospheric pressure. Pressure drop across the valve is proportional to the flow rate squared. The cross-sectional area of the tank, A, is 5 m2, and the mass density of all streams is 940 kg/m3.

(a) Draw a schematic diagram of the process and write an appropriate dynamic model for the tank level. What is the corresponding steady-state model?

(b) At initial steady-state conditions, with w1 = 2.0 kg/s and w2 = 1.2 kg/s, the tank level is 2.25 m. What is the value of the valve constant (give units)?

(c) A process control engineer decides to use a feed- forward controller to hold the level approximately constant at the set-point value (h = 2.25 m) by measuring w and manipulating w2. What is the mathematical relation that will be used in the controller? If the w1 meseiremer1t is not very accurate and always supplies a value that is 1.1 times the actual flow rate, what can you conclude about the resulting level control? 

Reference no: EM13881872

Questions Cloud

Why bank managers often refuse to sell securities at a loss : Explain why bank managers often refuse to sell securities at a loss relative to book value. What is the cost of continuing to hold discount instruments? What are the costs of selling securities at a gain?
Examine the environmental impact caused by the extraction : Examine the environmental impact caused by the extraction process
What rate of return will be realize per quarter and per year : If the bond dividend is in fact paid for the following 5 years (after the 2 years) and the investor then sells the bond for $7000, what rate of return will be realized ( a ) per quarter and ( b ) per year (nominal)?
Explain what factors should be used to make a decision : Suppose that the U. S. Treasury yield curve is continuously downward- sloping. To maximize interest income over the next 10 years, should a bank portfolio manager buy securities with maturities of under 1 year or securities with maturities of 10 year..
Draw a schematic diagram of the process : Draw a schematic diagram of the process and write an appropriate dynamic model for the tank level. What is the corresponding steady-state model?
Estimate the parameters of the linear model : Estimate the parameters of the linear model and interpret the results and Estimate the parameters of the log-linear model and interpret the results.
What was the semiannual interest rate when bonds were sold : Because the market interest rate increased immediately before the bonds were sold, the city received only $23.5 million from the bond sale. What was the semiannual interest rate when the bonds were sold?
Can investors accurately forecast the direction of future : Provide one reason for using the bank's investment portfolio to speculate on interest rate movements. Provide one reason against such a strategy. What do you believe about efficient markets, and how does this influence your opinion of speculating? Ca..
Emergency and disaster management : The use of training exercises in preparing for disaster scenarios is an important component of any emergency preparedness plan

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Thermal efficiency of the cycle and mean effective pressure

A gasoline engine is modeled as an Otto cycle. It has at temperature and pressure at the beginning of compression of 10°C and 90 kPa. The compression ratio is 7 and the specific energy added to the air during the heat addition process is 1432.46 kJ/k..

  Consider a cylindrical nickel wire 19 mm in diameter and 32

consider a cylindrical nickel wire 1.9 mm in diameter and 3.2 times 104 mm long. calculate its elongation when a load

  Consider a spark ignition combustion engine with two

consider a spark ignition combustion engine with two possible configurartion for turbocharging. configuration a is

  An air-standard cycle with variable specific heats is

an air-standard cycle with variable specific heats is executed in a closed system and is composed of the following four

  Calculate in kpa and in atm

Fish swimming above a dam may be up to 260 feet beneath the surface of the lake. What ambient pressure change would a fish experience if it was pulled up to a boat? Calculate in kPa and in atm.

  Why is the carnot cycle not suitable as an ideal cycle

why is the carnot cycle not suitable as an ideal cycle for all the power producing devices ?

  An electric heater inside the cylinder is now turned on and

an insulated piston-cylinder device contains 5 l of saturated liquid water at a constant pressure of 150 kpa. an

  The walls of the tank are constructed of 5-cm-thick

milk is to be transported from texas to california for a distance of 2100 km in a 7-m-long 2-m-external-diameter

  State the first law and indicate what terms will drop out

Water with a specific volume of 0.001 m3/kg flows through a pipe at 5 kg/sec entering the pipe with an initial velocity of 100 m/sec and exiting at 50 m/sec. The exit of the pipe is 100 m above the inlet. The pipe is well insulated and the power requ..

  Find the transfer function for the impulse response

Find the transfer function for the following impulse response

  Evaluate statistical properties of a population of nuts

Evaluate the statistical properties of a population of the nuts and evaluate the statistical properties of a sample of nuts to infer data about the entire population. Did the factory create all the nuts equally?

  Calculate the mass fraction of each compound what is the

a mixture is 10.0 mole ethyl alcohol75.0 mole ethyl acetate c4h8o2 and 15.0 mole acetic acid. calculate the mass

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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