Control system and apparatus for producing compatible mixtures of fuel gases
US4277254A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 15, 1980 |
| Grant date | Jul 7, 1981 |
| Priority date | — |
| Expiry date | Feb 15, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2529
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a fuel gas distribution system, at least one fuel gas stream is mixed with air to achieve a heating value equivalency which is the same as that of another fuel gas having a different heating value and specific gravity. The heating value equivalency is defined as the heating value of a fuel gas in heat units per unit of volume divided by the square root of the specific gravity of the gas. A control system is employed to measure the specific gravity, pressure, temperature and flow rate of the first gas in a first gas stream, and the pressure, temperature and flow rate of air in a second stream, and to control the flow rate of the gas from the first stream and air from the second stream such that the resulting mixture from the two streams has the same heating value equivalency as that of a third gas which was used to adjust the gas burners for use in that system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.