| 摘要 |
1,157,333. Heat exchangers. FORD MOTOR CO. Ltd. 4 Nov., 1966 [21 Dec., 1965], No. 49447/66. Headings F4K and F4S. A heat sink 12 (or 12<SP>1</SP>, Fig. 5) is disposed in the path of a hot fluid passing to a heat exchanger 10 (or 10<SP>1</SP>), the fluid being initially and temporarily at a high temperature and subsequently at a lower (steady state) temperature. The arrangement is intended for use with plant such as gas turbine plant wherein the initial temperature of the hot turbine exhaust gas when the plant is started up is inordinately high and would cause an undesirable temperature differential in the heat exchanger. The heat sink absorbs some of the initial heat and acts to quickly reduce the temperature differential to that of the steady state operation of the heat exchanger. In the preferred form, the heat sink comprises honeycomb passages formed by corrugated members 56 secured between thin sheet stock 58. The heat exchanger, in which air is heated by the hot gases, may be a rotary matrix type regenerator (Fig. 5) or as shown it may be a recuperator in which the fluid passages are formed by plates 18 spaced apart by corrugated elements 16 in the air passages and 14 in the gas passages, the latter passages being of larger crosssectional area than the air passages. |
