COMBINED GAS-WATER TUBE HYBRID HEAT EXCHANGER

摘要

A heat exchanger having a cylindrical body comprising an upper section, a lower section, a side water jacket surrounding the upper and lower sections, a top water jacket disposed atop the upper section and a gas exhaust disposed below the lower section. A water cavity is disposed substantially in the lower section while a gas cavity having a burner is disposed substantially centrally within the gas cavity. A plurality of water tubes disposed in a ring formation, connect the water cavity through the gas cavity to the top water jacket and a plurality of gas tubes also disposed in ring formations, connect the gas cavity through the water cavity to the gas exhaust. At least one of the gas tubes ring has a diameter that is greater than that of the water tubes ring.

主权项

1. A heat exchanger 2 comprising:
(a) a liquid cavity 68 having a liquid inlet 22 for receiving a liquid flow 14; (b) a gas cavity 66 configured for receiving a burner 8 substantially centrally disposed within said gas cavity 66, wherein said gas cavity 66 is disposed atop said liquid cavity 68; (c) at least one liquid tube 18 connecting said liquid cavity 68 through said gas cavity 66; and (d) at least one gas tube 20 connecting said gas cavity 66 through said liquid cavity 68 to a gas exhaust 26 disposed below said liquid cavity 68, wherein said liquid flow 14 is configured to flow from said liquid inlet 22 through said liquid cavity 68, said at least one liquid tube 18 to a liquid outlet 24 and said burner 8 is configured to produce direct heat and a flue gas flow 12 configured to flow from said gas cavity 66 through said at least one gas tube 20 to said gas exhaust 26 and heat transfer is caused from said direct heat and said flue gas flow 12 to said liquid flow 14.