It Is Not Recommended to Use a 1-2 Shell and Tube

question 21

Multiple Choice

It is not recommended to use a 1-2 shell and tube heat exchanger for a particular heat duty, whenever the LMTD correction factor is

• A)> 0.75
• B)< 0.75
• C)< 0.50
• D)< 0.25

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Definitions:

Efficient Scale

The level of production at which a firm operates with the lowest average total costs, achieving economies of scale without incurring diseconomies of scale.

Short-Run Cost Curves

Graphical representations that show the relationship between a firm's costs and output levels in the short term.

Long-Run Curve

The graphical representation in economics of the relationship between output and input when all inputs are variable, showing potential economies of scale.

Marginal-Cost Curve

A graph that displays the cost of producing one additional unit of a good or service.