What should be the liquid level control in the shell side of a horizontal heat exchanger to achieve the best evaporation area? How to calculate it? Thank you
Thread Content
I have a horizontal heat exchanger; the cold medium is fed into the shell side, and vaporization occurs using the gas phase temperature in the tube bundle； The tube bundle utilizes the cold medium in the shell side for condensation in the gas phase; I would like to know at what shell side liquid level level the evaporation rate is optimal?
I have used cryogenic air separation units, and their main condensation evaporators work on this same principle. It is ideal for the condensed gas phase to maintain a low liquid level (acting as a liquid seal), while on the other side, the liquid that is evaporating should have a level such that it is completely submerged in the liquid at the heat exchange location (referred to as \"fully submerged\"). Only in this way can the heat exchange area achieve the optimal condition for gas/liquid heat exchange. But here, both the gas and liquid are in a saturated state.
To ensure effective heat exchange, it is necessary to keep the liquid level above all the heat exchange tubes
As long as it can be submerged, the residence time should also not be too long during the process