Hermetically-sealed engine cooling system and related method of cooling
US6230669A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 13, 1999 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | May 13, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P2050/24
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a heat transfer system (10), an upper coolant chamber (31) and a lower coolant chamber (24) of a typical engine, such as an internal combustion engine, fuel cell, boiler, or other engine for converting fuel to thermal energy, are formed adjacent to the heat-rejecting components of the engine and are hermetically sealed to prevent exposure of heat-transfer liquid within the chambers to the engine's ambient atmosphere. The heat-transfer liquid is preferably a substantially anhydrous, boilable liquid having a saturation temperature higher than that of water, and the heat-transfer liquid is pumped at a predetermined flow rate, and distributed through the heat-transfer fluid chamber so that the liquid within the chambers substantially condenses the heat-transfer liquid vaporized by the heat-rejecting components of the engine. Thermally-expanded heat-transfer liquid, non-condensable gas, and trace amounts of vapor, if any, are received within a hermetically-sealed accumulator (78) coupled in fluid communication with a relatively low-pressure area of the heat-transfer fluid chambers (24, 31), and the accumulator (78) defines at least one chamber (86, 88, 90), which may form a liquid-fr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.