Fred Donald Lang

US Patent:

6522994, Feb 18, 2003

Filed:

Mar 22, 1999

Appl. No.:

09/273711

Inventors:

Fred D. Lang - San Rafael CA

Assignee:

Exergetic Systems LLC - San Rafael CA

International Classification:

G06F 1130

US Classification:

702183, 702 22, 700274

Abstract:

The operation of a fossil-fueled thermal system is quantified by obtaining a reference fuel chemistry before on-line operation, and thereafter operating on-line. In on-line operation, a set of measurable operating parameters is measured, including at least effluent concentrations of O and CO , and optionally the concentration of effluent H O and the concentration of effluent SO. An indicated Air/Fuel ratio is obtained, as are the ambient concentration of O , and air pre-heater leakage and dilution factors. The fuel ash and fuel water are calculated, and the complete As-Fired fuel chemistry is calculated. From the complete As-Fired fuel chemistry, the pertinent systems parameters such as reference fuel heating value, boiler efficiency, system efficiency, fuel flow rate, total effluent flow rate, individual effluent flow rates, and individual emission rates are determined in a fully consistent manner. The Method has been reduced to software which is fully benchmarked and operational.

US Patent:

6560563, May 6, 2003

Filed:

Apr 4, 2001

Appl. No.:

09/827956

Inventors:

Fred D. Lang - San Rafael CA

Assignee:

Exergetic Systems LLC - San Rafael CA

International Classification:

G06F 1130

US Classification:

702182, 700287

Abstract:

The operation of a fossil-fueled thermal system is quantified by obtaining effluent flow, the L Factor and other operating parameters to determine and monitor the units heat rate and to determine the emission rates of its pollutants.

US Patent:

6584429, Jun 24, 2003

Filed:

Aug 2, 2000

Appl. No.:

09/630853

Inventors:

Fred D. Lang - San Rafael CA

Assignee:

Exergetic Systems LLC - San Rafael CA

International Classification:

G06F 1546

US Classification:

702182, 702 31, 374 43, 700274

Abstract:

The operation of a fossil-fueled thermal system is quantified by obtaining an unusually accurate boiler efficiency. Such a boiler efficiency is dependent on the calorimetric temperature at which the fuels heating value is determined. This dependency affects the major thermodynamic terms comprising boiler efficiency.

US Patent:

6651035, Nov 18, 2003

Filed:

Oct 9, 2002

Appl. No.:

10/268466

Inventors:

Fred D Lang - San Rafael CA

Assignee:

Exergetic Systems LLC - San Rafael CA

International Classification:

G06F 1130

US Classification:

702183, 702 22, 702 51, 165 111, 431 16

Abstract:

This invention relates to a fossil-fired thermal system such as a power plant or steam generator, and, more particularly, to a method for rapid detection of tube failures and their location with the steam generator, without need for direct instumentation, thereby preventing more serious damage and minimizing repair time on the effected heat exchanger. This method is applicable to Input/Loss methods of monitoring fossil-fired thermal systems.

US Patent:

6691054, Feb 10, 2004

Filed:

Feb 18, 2003

Appl. No.:

10/371498

Inventors:

Fred D Lang - San Rafael CA

Assignee:

Exergetic Systems LLC - San Rafael CA

International Classification:

G06F 1900

US Classification:

702100, 702182

Abstract:

The operation of a fossil-fueled thermal system is quantified by employing the F Factor and other operating parameters to determine and monitor the units heat rate and to determine the emission rates of its pollutants.

US Patent:

6714877, Mar 30, 2004

Filed:

Mar 1, 2002

Appl. No.:

10/087879

Inventors:

Fred D Lang - San Rafael CA

Assignee:

Exergetic Systems LLC - San Rafael CA

International Classification:

G01N 3100

US Classification:

702 32, 700274

Abstract:

The operation of a fossil-fueled thermal system is quantified by a method for determining correction factors to Choice Operating Parameters, including effluent CO and other parameters, such that combustion stoichiometric consistency and thermodynamic conservations are both achieved. Correcting Choice Operating Parameters is accomplished through multidimensional einimization techniques operating on certain System Effect Parameters. The corrected Choice Operating Parameters may then be supplied to Input/Loss methods as used to monitor and improve system heat rate.

US Patent:

6745152, Jun 1, 2004

Filed:

Apr 24, 2002

Appl. No.:

10/131932

Inventors:

Fred D Lang - San Rafael CA

Assignee:

Exergetic Systems LLC - San Rafael CA

International Classification:

G06F 1130

US Classification:

702183, 702 22, 702 51, 165 111, 431 16

Abstract:

This invention relates to a fossil-fired thermal system such as a power plant or steam generator, and, more particularly, to a method for rapid detection of tube failures without direct instrumentation, thereby preventing serious damage to heat exchangers. This method is applicable to Input/Loss methods of monitoring fossil-fired thermal systems.

US Patent:

6799146, Sep 28, 2004

Filed:

Jun 24, 2002

Appl. No.:

10/179670

Inventors:

Fred D Lang - San Rafael CA

Assignee:

Exergetic Systems LLC - San Rafael CA

International Classification:

G06F 1130

US Classification:

702183, 700274

Abstract:

The operation of a fossil-fueled thermal system is quantified by a method for continuously monitoring the thermal system at a location remote from the system, advising the system operator of corrections, improvements and warnings which improve system operations, such advise may include diagnostic information, Dynamic Heat Rate and notice of tube failures.