{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Spring09CHBI301Exam1

# Spring09CHBI301Exam1 - pm'd 1.020'3[m u aĀ\lalāt...

This preview shows pages 1–2. Sign up to view the full content.

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: pm 'd 1 .020 '3 [m u. aĀ» \lalāt āHABā lV Fluid *er Problem 1: Intravenous infusions are usually driven by gravity by hanging the ļ¬uid bottle at sufļ¬cient height to counteract the blood pressure in the vein and to force the ļ¬uid into the body. The higher the bottle is raised, the higher the ļ¬ow rate of the ļ¬uid will be. 5, (a) If it is observed that the ļ¬uid and the blood pressures balance each other when the bottle is 1.2 m above the arm level, determine the gage pressure of the blood. _ 6 (b) If the gage pressure of the ļ¬uid at the arm level needs to be 20 kPa for sufļ¬cient ļ¬ow 7ā rate, determine how high the bottle must be placed. Take the density of the ļ¬uid to be 1020 kg/m3. bo'l'He ā5 Problem 2: A well-stirred tank of volume V= 2 In3 shown in ļ¬gure below is initially ļ¬lled with brine, in which the initial concentration of sodium chloride at t = 0 is co = 1 kg/m3. Subsequently, a ļ¬ow rate of Q = 0.01 m3/s of pure water is fed steadily to the tank, and the same ļ¬ow rate of brine leaves the tank through a drain. Additionally, there is an ample supply of sodium chloride crystals in the bottom of the tank, which dissolve at a uniform rate of m = 0.02 kg/s. It is reasonable to suppose that the volume of brine in the tank remains constant. :6 (a) Derive an expression for the subsequent concentration of sodium chloride 0 in terms of \ co, m, t, Q, and V. \r, (b) Make a sketch of c versus t and label the main features. to (c) Assume an inexhaustible supply of crystals, what will the concentration c of sodium chloride in the tank be at t = 0, 10, 100, and 00 seconds? Carefully deļ¬ne the system on which you perform a transient mass balance. 9ā Inlm Aā our y/ CROOSe 4he \$ds+Ā¢m 1Ā° evācluola āHāe :sdāel 59H" V 1 m3 Kn ļ¬he 4onlc- Tkm I 'ā pevf'olm a ā3k- bābācļ¬ Q3 : 1 h: IM (3'- msSL 5Ā°ā - ā Separate variables X 7" ...
View Full Document

{[ snackBarMessage ]}

### Page1 / 2

Spring09CHBI301Exam1 - pm'd 1.020'3[m u aĀ\lalāt...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online