Heat exchanger
AssigneeProvides Metalmeccanica S.R.L.
InventorFranco Provenziani
Life of this patent
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Abstract
A flooded heat exchanger is described. The flooded heat exchanger has a primary tube bundle inside which a first operating fluid flows, a skirt surrounding the primary tube bundle and receiving a second operating fluid which flows over the primary tube bundle, and one or more extractable units, each in turn having a secondary tube bundle which receives an auxiliary operating fluid, and a secondary tube plate for performing a removable connection to the flooded heat exchanger.
Claims18
Extractable unit (100) apt to be removably inserted inside a heat exchanger (101) of the flooded type, using a first operating fluid flowing inside a primary tube bundle (10) and a second operating fluid flowing inside a skirt (1) of the exchanger itself surrounding the primary tube bundle so as to lap the latter,
- which unit (100) comprises:
- a secondary tube bundle (19) inside which, during use, an auxiliary operating fluid flows;
- and
- means (7) for performing a removable connection to the heat exchanger, said means being apt to allow insertion of said secondary tube bundle (19) inside the skirt of the exchanger downstream of the primary tube bundle (10) with respect to the flow of the second operating fluid.
Extractable unit (100) according to the preceding claim, having an inlet (17) and an outlet (18) for the second operating fluid, which are arranged on the same side.
Extractable unit (100) according to any one of the preceding claims, wherein said removable connection means comprise a secondary tube plate (7).
Extractable unit (100) according to any one of the preceding claims, comprising removable fluid connection means which are apt to establish fluid communication between an auxiliary fluid outlet (18) of the unit itself and an inlet (9) for a second operating fluid of the exchanger (101).
Heat exchanger (101) of the flooded type, comprising:
- a primary tube bundle (10) inside which, during use, a first operating fluid flows;
- a skirt (1) surrounding said primary tube bundle (10) and apt to receive a second operating fluid which laps, during use, said primary tube bundle (10);
- and
- one or more extractable units (100) according to any one of the preceding claims.
Heat exchanger (101) according to the preceding claim, comprising means (11) for channelling the second operating fluid towards said secondary tube bundle or bundles (19) of said extractable unit or units (100).
Heat exchanger (101) according to the preceding claim, wherein said channelling means comprises one or more lateral deflectors (11) extending longitudinally inside said skirt (1).
Heat exchanger (101) according to the preceding claim, wherein said distribution means comprise a longitudinal distributor (13) arranged upstream of said primary tube bundle (10).
Heat exchanger (101) according to the preceding claim, wherein said is longitudinal distributor comprises a perforated plate (13).
Heat exchanger (101) according to the preceding claim, wherein said transverse distribution elements comprise inclined baffles or partitions (12).
Method for heat exchange between a first operating fluid and a second operating fluid,
- in a heat exchanger (101) of the flooded type, comprising:
- a primary tube bundle (10) inside which said first operating fluid flows;
- a skirt (1) which surrounds the primary tube bundle (10) and inside which said second operating fluid flows so as to lap the primary tube bundle (10);
- and a secondary tube bundle (19) inside which an auxiliary operating fluid flows and which is arranged downstream of the primary tube bundle (10) relative to the flow of said second operating fluid,
- which method envisages that said auxiliary operating fluid is introduced again, downstream of the heat exchange with the second operating fluid, inside the skirt (1) so as to act in turn as a second operating fluid.
Method according to the preceding claim, wherein said first operating fluid is a “hot” fluid.
Dependencies are inferred from the claim text.