Air-Cooled Heat Exchanger

An installation of air-cooled heat exchangers comprising:

• a. first and second air-cooled heat exchangers wherein each of said first and second air-cooled heat exchanger includes:
• i. a bay including a plurality of tube bundles, each of said plurality of tube bundles configured to receive a process fluid;
• ii. a single fan shroud;
• iii. a framework configured to support the fan shroud and the bay with the single fan shroud positioned adjacent to the plurality of tube bundles;
• iv. a single fan rotatably positioned within the fan shroud with the fan shroud configured so that rotation of the fan causes air flow over the plurality of tube bundles so that process fluids within the plurality of tube bundles are cooled;
• v. a fan motor mounted on the framework and configured to rotate the fan;
• vi. each of said plurality of tube bundles including:
• 1. a header containing an inlet chamber and an outlet chamber and an inlet nozzle in fluid communication with the inlet chamber and an outlet nozzle in fluid communication with the outlet chamber;
• 2. a plurality of U-shaped heat exchange tubes extending between and in fluid communication with the inlet and outlet chambers of the header;
• 3. a pair of opposing elongated side plates with the plurality of U-shaped heat exchanger tubes positioned therebetween;
• 4. an elongated end plate connected to the pair of opposing elongated side plates and extending parallel to the header;
• b. wherein a first elongated side plate of the first heat exchanger bundle is positioned adjacent to a second elongated side plate of the second tube bundle and headers of the plurality of tube bundles of the first and second air-cooled heat exchangers are generally in alignment along their longitudinal axes.

A system for liquefying natural gas comprising:

• a. a liquefier heat exchanger including a liquefying passage configured to receive a stream of natural gas and a refrigeration passage configured to receive a stream of mixed refrigerant so that the natural gas stream is cooled and liquefied in the liquefying passage by indirect heat transfer with the stream of mixed refrigerant in the refrigeration passage;
• b. a mixed refrigerant compression system including:
• i. a mixed refrigerant compressor having an inlet in fluid communication with an outlet of the refrigeration passage;
• ii. a mixed refrigerant condenser having an inlet in fluid communication with an outlet of the mixed refrigerant compressor, said mixed refrigerant condenser having an outlet in fluid communication with the refrigeration passage of the liquefier heat exchanger;
• c. said mixed refrigerant condenser including:
• i. a bay including a plurality of tube bundles, each of said plurality of tube bundles configured to receive a process fluid;
• ii. a single fan shroud;
• iii. a framework configured to support the fan shroud and the bay with the single fan shroud positioned adjacent to the plurality of tube bundles;
• iv. a single fan rotatably positioned within the fan shroud with the fan shroud configured so that rotation of the fan causes air flow over the plurality of tube bundles so that process fluids within the plurality of tube bundles are cooled;
• and
• v. a fan motor mounted on the framework and configured to rotate the fan.