Page 24 - Practical Technology 2025

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Clinical Pharmacy-Pharm D Level Three 2 Semester 2024/2025 Pharmaceutical Technology (PT 607)

efficiency of heat transfer as q is tubes wall acting as insulating layer

directly proportional to (A). lowering the heat transfer rate (q).
2. The tube bundle is fixed from both

sides so:

• cannot be removed for cleaning or

replacement

• fixed position does not allow tubes

expansion leading to buckling of

tubes or complete separation of the

tubes from the sheets.

2. Multi-pass tubular heater

a. Fixed head

• Construction

• Similar in construction to single pass tubular heater but the fluid to be
heated is diverted by means of baffles placed in the distribution
chambers.

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