... with the investigation and repair of high-humidity buildings. condensation high-humidity museum natatorium hospital airflow Reprinted from JTE, Vol. 39, No. 4 doi:10.1520/JTE102999 Available online at www.astm.org/JTE Sean M. O Brien1 and Amrish K. Patel2 Considerations for Controlling Condensation in High...

... the aircraft and to evaluate other factors that could affect the comfort of the aircraft occupants. Parameters measured include: volatile and semivolatile organic compounds, aldehydes, carbon dioxide, carbon monoxide, oxygen, relative humidity, temperature, and airflow. The airline evaluated the test results...

...: tracer gas decay measurements of whole-building air change rates, the determination of air change rates based on peak carbon dioxide (CO 2 ) concentrations, the determination of percent outdoor air intake using tracer gas (sulfur hexafluoride and occupant-generated CO 2 ), and direct airflow rate...

... radiation systematically changes (generally reducing) the energy load of air infiltration. A systematic study performed by the authors shows that this heat exchange can substantially reduce the air infiltration energy requirements in frame structures or walls under laboratory conditions depending on airflow...

... ASTM E 283 and ASTM E 1424 in conjunction with ASTM C 976 were used to study the effect of airflow on thermal performance of the wall. A typical residential 2 × 4 stud wall was constructed and placed on top of a subfloor, making a 2.44 × 2.74 m (8 by 9 ft) test specimen. This base wall assembly...

... The computer programs published so far enabled the computation of airflows assuming constant temperatures or the calculation of air temperatures assuming constant airflows. Recently, a new microcomputer program was developed in which thermal conditions were considered when predicting the spread...

... This paper discusses the application of three-dimensional computational airflow and smoke modeling to building environmental design. It is particularly concerned with the integration of modeling into the design process. The principles of airflow and smoke modeling techniques are discussed...

... by the multizone nature of the airflow system and the numerous interzone airflow paths that must be characterized in such a system. This paper presents the results of a computer simulation of airflow and radon transport in a twelve-story residential building. Interzone airflow rates and radon concentrations were...

... using the various techniques are discussed. airflow infiltration tracer gases multiple zones measurement systems David T. Harrje, 1 Russell N. Dietz, 2 Max Sherman, 3 David L. Bohac, 3 Ted W. D'Ottavio, 2 and Darryl J. Dickerhof~ Tracer Gas Measurement Systems Compared in a Multifamily...

... New tracer gas techniques for measuring airflow rates in HVAC ducts and buildings airflow systems are described. These pulse tracer techniques are based upon the application of integral mass balance equations to the tracer gas concentration response of an airflow system to pulse injections...