Question Bank • QB_EXP_DFE_HEX_025 NAT • 2 Marks

Section 7: Dairy and Food Engineering

Heat Exchangers: LMTD & NTU-Effectiveness Methods

Subtopic: Counterflow heat exchanger LMTD calculation

Question Statement:

A tubular pasteurizer operating under the counterflow profile shown has heat capacity rates $C_h = C_c = 4.0\text{ kW/K}$. The overall conductance $U A = 8.0\text{ kW/K}$. Compute the Number of Transfer Units ($NTU$) of the heat exchanger (round off to the nearest integer).

Answer Key:

2

Step-by-Step Solution & Explanation

$NTU = \frac{U A}{C_{\text{min}}} = \frac{8.0}{4.0} = 2.0$.
← Previous (QB_EXP_DFE_HEX_022) Next (QB_EXP_DFE_HEX_028) →

Practice In Authentic CBT Exam Interface

Test your skills under authentic timed conditions with live scoring and AIR percentile ranking.

Launch CBT Mock Test