LEARNING MODULE 11
Mixed Heat Transfer
EXAMPLE PROBLEM 2
McCabe Problem 12.1
Glycerin is flowing at the rate of 700 kg/hr through a 30-mm-ID pipe. It enters a
heated section 2.5m long, the walls of which are at a uniform temperature of
115oC. The temperat

LEARNING MODULE 14
CONTROLLING HEAT EXCHANGERS
EXAMPLE PROBLEM 2
For 2 shell, 4 tube pass exchanger, the specification calls for cooling a hot process stream from
TH1 to TH2 using a cooling water utility stream. The goal is to obtain the desired outlet pr

LEARNING MODULE 14
CONTROLLING HEAT EXCHANGERS
EXAMPLE PROBLEM 1
For 1 shell, 2 tube pass exchanger, the specification calls for maintaining the outlet approach
between the process fluid (cold) and utility steam (hot) streams by adjusting the surface area

LEARNING MODULE 13
EXAMPLE PROBLEM 2
Scaling Arguments in Heat Transfer proving it with numbers
For the scenario given in Example Problem 1, assume that for equal flow rates of
hot and cold streams, say 500 m3/hr, the individual heat transfer coefficients

LEARNING MODULE 13
EXAMPLE PROBLEM 3
Choosing Heat Transfer Equipment
Liquid hexane is to be cooled from 250 oF to 120 oF (1 atm pressure) using a
pentane liquid stream available at 80 oF (1 atm pressure). You are asked to specify
the type of heat exchang

LEARNING MODULE 13
EXAMPLE PROBLEM 1
Scaling Arguments in Heat Transfer
McCabe Problem 15.6
In a shell & tube heat exchanger, water is used to cool an aqueous stream. If the
cooling water rate is twice the rate of the process stream, prove whether a highe

LEARNING MODULE 11
Heat Transfer Coefficients
EXAMPLE PROBLEM 1
10,000 lb/hr of liquid n-butane must be heated from -10oF to 20 oF at 1 atm pressure prior to
entering a reactor. The reactor product, liquid iso-butane leaves the reactor at 40oF (because th

LEARNING MODULE 11
Mixed Heat Transfer
EXAMPLE PROBLEM 3
McCabe Problem 13.3
A horizontal shell and tube condenser is to be used to condense saturated ammonia
vapor at 145 psia (T=82oF). The condenser has 19 steel tubes (1.5in OD, 1.3in ID),
14 t long thr

LM 13 Heat Exchangers
Homework Assignment
1.
McCabe 15.1 (Worth 2 Points) Air is blown at a rate of 3 m3/s (measured at 0 C and 1 atm) at right
angles to a tube bank 10 pipes and 10 spaces wide and 10 rows deep. The length of each pipe is 3.5 m.
The tubes

LEARNING MODULE 12
Radiation Heat Transfer
EXAMPLE PROBLEM 1
Radiation Between Two Large Plates
Given two very large rectangular walls at 800oF and 1000oF, respectively within line of sight of
each other. Assuming they are perfect black bodies, how much h

LEARNING MODULE 12
Radiation Heat Transfer
EXAMPLE PROBLEM 2
Radiation from a Pipe
Given:
A pipe with an outer diameter of 3.4 inches, carrying steam having an outside wall
temperature of 125oF is immersed in an infinitely large air space @ 70oF. If the
t