| 摘要 |
1515458 Heat exchanger; exhaust gas steam generator ISHIKAWAJIMA - HARIMA JUKOGYO KK 26 Aug 1976 [10 Sept 1975] 35570/76 Headings F4A and F4S A heat exchanger comprises an exhaust pipe 1 for an engine or boiler and at least one tube extending across the pipe, the outer surface of the part of each tube within the pipe having a heat and acid resistant glass coating 3. Each tube passes through openings in the pipe wall, the openings being provided with gaskets 4 which, as shown, are held in position by retainers 7 and washers 9. As illustrated, a continuous tube 2 of sepentine form is made up of U-tubes which are connected together in series relation outside the pipe 1. The U-shaped bends of the tube 2 are surrounded by a casing 5 supplied at 6 with air at a pressure higher than that of the gases in the pipe 1 to prevent escape of these gases. The inner wall of the pipe 1 is coated with phenolic resin. In use, water is fed into the tube 2 and steam is generated therein and fed to a turbine. The outer surfaces of pipe 1, the inner surfaces of casing 5 and the outer surfaces of the U-shaped connections may have heat-resisting and acid-resisting coatings. |
