Tracer airflow measurement system (TRAMS)

Wang, Duo

Title: Tracer airflow measurement system (TRAMS)

Full Record
Other Related Research

Abstract

A method and apparatus for measuring fluid flow in a duct is disclosed. The invention uses a novel high velocity tracer injector system, an optional insertable folding mixing fan for homogenizing the tracer within the duct bulk fluid flow, and a perforated hose sampling system. A preferred embodiment uses CO.sub.2 as a tracer gas for measuring air flow in commercial and/or residential ducts. In extant commercial buildings, ducts not readily accessible by hanging ceilings may be drilled with readily plugged small diameter holes to allow for injection, optional mixing where desired using a novel insertable foldable mixing fan, and sampling hose.

Inventors:

Wang, Duo ^[1]

Albany, CA

Issue Date:: 2007-04-24

Research Org.:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 908981

Patent Number(s):: 7207228

Application Number:: 10/917,161

Assignee:: The Regents of the University of California (Oakland, CA)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01F - MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL

Show more

G - PHYSICS G01 - MEASURING G01F - MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL
G01F1/708 - Measuring the time taken to traverse a fixed distance

Show less

DOE Contract Number:: AC03-76SF00098

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 47 OTHER INSTRUMENTATION

Citation Formats


                    Wang, Duo. Tracer airflow measurement system (TRAMS).  United States: N. p., 2007. 
        Web.

Copy to clipboard


                    Wang, Duo. Tracer airflow measurement system (TRAMS).  United States.

Copy to clipboard


                    Wang, Duo. Tue .  
        "Tracer airflow measurement system (TRAMS)".  United States.  https://www.osti.gov/servlets/purl/908981.

Copy to clipboard


                    
@article{osti_908981,

  title        = {Tracer airflow measurement system (TRAMS)},

  author       = {Wang, Duo},

  abstractNote = {A method and apparatus for measuring fluid flow in a duct is disclosed. The invention uses a novel high velocity tracer injector system, an optional insertable folding mixing fan for homogenizing the tracer within the duct bulk fluid flow, and a perforated hose sampling system. A preferred embodiment uses CO.sub.2 as a tracer gas for measuring air flow in commercial and/or residential ducts. In extant commercial buildings, ducts not readily accessible by hanging ceilings may be drilled with readily plugged small diameter holes to allow for injection, optional mixing where desired using a novel insertable foldable mixing fan, and sampling hose.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2007},

  month        = {4}

}

Copy to clipboard

Patent:

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE Patents and OSTI.GOV collections:

System and method for measuring fluid properties using magnetic field techniques via magnetic tracer

Patent Mazumdar, Yi Chen; Nemer, Martin B.; Brooks, Carlton F.; ...

A method and apparatus for determining a property of a fluid in a vessel. The method uses magnetic tracer particles and an externally applied magnetic field which orients the particles. When the fluid moves, it changes the orientation of the tracer particles, thus changing the magnetic fields. These changes are detected by external magnetic field sensors. By using mathematical models, the property of the fluid in the vessel is determined from the detected magnetic field. In this manner, fluid vorticity, velocity, strain and stress may be estimated.
Full Text Available
System and method for occupancy-driven register airflow control

Patent Wang, Ya; Chen, Zhangjie

An HVAC register airflow control system and an air flow control method are provided. A housing of the system is in fluid communication with an air source for supplying an airflow. The housing includes an air outlet to the enclosed space. A detection sensor detects occupancy information of the enclosed space. A controller generates a control signal based on the occupancy information and controls the shape change of a damper made of a shape memory material. The damper is controlled to switch between a first operative configuration for preventing the airflow from entering the enclosed space and a second operativemore » « less
Full Text Available
Airflow control system

Patent Motszko, Sean Ronald; McEnaney, Ryan Patrick; Brush, Jeffrey Alan; ...

A dual airflow control system for an environment having a first air zone and a second air zone. The system includes a first input device operable to generate a first input signal indicative of a desired airflow to the first zone and a second input device operable to generate a second input signal indicative of a desired airflow to the second zone. First and second flow regulators are configured to regulate airflow to the first and second zones, respectively, such that the first and second regulators selectively provide the airflow to each of the first and second zones based onmore » « less
Full Text Available
Pre-fire warning system and method using a perfluorocarbon tracer

Patent Dietz, Russell N [Patchogue, NY]; Senum, Gunnar I [Patchogue, NY]

A composition and method for detecting thermal overheating of an apparatus or system and for quickly and accurately locating the portions of the apparatus or system that experience a predetermined degree of such overheating. A composition made according to the invention includes perfluorocarbon tracers (PFTs) mixed with certain non-reactive carrier compounds that are effective to trap or block the PFTs within the composition at normal room temperature or at normal operating temperature of the coated apparatus or system. When a predetermined degree of overheating occurs in any of the coated components of the apparatus or system, PFTs are emitted frommore » « less
Full Text Available
Methods and systems using encapsulated tracers and chemicals for reservoir interrogation and manipulation

Patent Roberts, Jeffery; Aines, Roger D; Duoss, Eric B; ...

An apparatus, method, and system of reservoir interrogation. A tracer is encapsulating in a receptacle. The receptacle containing the tracer is injected into the reservoir. The tracer is analyzed for reservoir interrogation.
Full Text Available

Similar Records