In a vertical short tube evaporator (Calandria type), the ______________________?
Correct answer: F. All A., B. & C.
- A. Tube dia of 2.5-7.5 cms, tube length of 75-200 cms and cylindrical drum dia of 1-6 metres are
- B. normally used
- C. Area of central downtake is equal to 40 to 100% of total cross-sectional area of the
- D. surrounding tube
- E. Liquor is inside the tube while the steam is outside the tube
- F. All A., B. & C.
Explanation
A short-tube calandria uses relatively short tubes with liquor inside the tubes and heating steam outside; the central downtake provides circulation. The listed dimensional and construction features are therefore combined in the all-of-these option.
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