Choose two(2) types of flow arrangement possible in double-pipe heat exchanger.

Choose types of heat exchanger that we had learned in chapter 4.

•The simplest type of heat exchanger

•One fluid flows through the smaller pipe while the other fluid flows through the annular space between the two

pipes.

Statements above best describe what type of heat exchanger?

•Large heat transfer surface area per unit volume.

•Area density B ─ heat transfer surface of a heat exchanger to volume ratio.

• This type of heat exchanger has B >700 m2/m3.

Statements above best described what type of heat exchanger?

Choose example/s of compact heat exchanger.

Compact heat exchanger typically has ________configuration where the two fluids move __________ to each other.

Figure represents compact heat exchanger which typically available in cross-flow configuration.The cross-flow configuration is further classified as A and B.

Identify A and B.

This figure represents what type of heat exchanger?

•Consists of a series of plates with corrugated flat flow passages.

•The hot and cold fluids flow in alternate passages

•Well suited for liquid-to-liquid heat exchange applications, provided that

the hot and cold fluid

streams are at about the

same pressure.

Statements above best described what type of heat exchanger?

In the analysis of heat exchangers, it is convenient to combine all the thermal resistances in the path of heat flow from the hot fluid to the cold one into a single resistance R, and to express the rate of heat transfer between the two

fluids as given equation,define U

Below sentences describes Fouling Factor.Please select correct options for missing words.

The performance of heat exchangers usually deteriorates with time as a result of accumulation of _________ on heat transfer surfaces. The layer of deposits represents ___________ to heat transfer and causes the rate of heat transfer in a heat exchanger to decrease. The net effect of these accumulations on heat transfer is represented by a fouling factor Rf, which is a measure of the thermal resistance introduced by fouling.

Select method/s used in the analysis of

heat exchangers.

Choose types of fouling

The analysis of heat exchangers can be greatly simplify by making the following assumptions, which are closely approximated in practice.

Choose the assumptions applicable .

First law of thermodynamics requires that the rate of heat transfer from the hot fluid be equal to the rate of heat transfer to the cold one.Refer to figure.

Define capital C(Ch and Cc) where,h=hot,c=cold.

Figure represents equation for ?

COUNTER FLOW HEAT EXCHANGER (page 662)

Note that the hot and cold fluids enter the

heat exchanger from opposite ends, and the outlet temperature of the cold fluid in this case may exceed the outlet temperature of the hot fluid. In the

limiting case, the cold fluid will be heated to the inlet temperature of the hot fluid. The outlet temperature of the cold fluid can never exceed the inlet temperature of the hot fluid.

Statements above are correct.

Equation in figure applicable to

F in this equation represents correction factor.F depends on ?

Choose the correct answer/s.

READING CORRECTION FACTOR VALUE FROM FIGURE 11-19(A)

Given P=0.65,R=0.6.What is value for F?

Effectiveness–NTU method greatly simplified heat exchanger analysis.This method is based on a dimensionless parameter called the ___________________ ε, defined as

The effectiveness of a heat exchanger depends on?

Determine R,Ui and Uo.