{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

CHEG112_2008_HW01_Solutions

# CHEG112_2008_HW01_Solutions - CHEG 112 Homework Set 1...

This preview shows pages 1–3. Sign up to view the full content.

Page 1 of 7 CHEG 112: Homework Set 1 SOLUTIONS Due Tuesday 26 February 2008 (at the beginning of class) 1). (30 points) A storage tank 10,000 Liters in size is initially empty. The valve connecting the tank to a water reservoir is opened to start filling the tank with water. The volumetric flow rate (Liters/min) of water increases with time (t) and can be expressed as: q in 200 10t 2 + a). Make a sketch and define the control volume. b). Write a material balance for water. The control volume is shown by the dotted line. Accumulation In Out - Production + Consumption - There is no outlet, and no water is produced or consumed. Thus, Accumulation In (Note that this is a transient problem [i.e. not steady-state], which means the accumulation term is not zero). The accumulation of water is simply the rate of change of the mass of water. Thus, t m w ( ) d d m w.in  where the subscript w refers to water, and the arrow indicates a mass flow rate. t m w ( ) d d t ρ w V w ( ) d d and m w.in  ρ w q in therefore t ρ w V w ( ) d d ρ w q in

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
CHEG 112: HW 1 Solutions Page 2 of 7 c). Compute the time needed to fill the tank.
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern