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Which of the following is the main disadvantage of a direct plate exchanger?

Which of the following is the main disadvantage of a direct plate exchanger? Correct Answer If the media contains suspended solids, the plate may get blocked

The main disadvantage of a direct plate exchanger is that if the media contains suspended solid particles, the plate might get blocked and the medium might not get sterilized. In this case, continuous steam injectors are used which does not get blocked due to suspended solids.

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#2 : Three of them agree that the plate ends with 12L.
#3 : Three of them think that the second letter is X, and a different three think that the third letter is K.

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