Tracer Gas Measurement of Airflow Rates in Spaces with Several Air-Handling Units, Recirculation, or Large Time Constants

2006 ◽  
Vol 12 (3) ◽  
pp. 477-496 ◽  
Author(s):  
C. -A. Roulet ◽  
M. S. Zuraimi ◽  
S. C. Sekhar ◽  
K. W. Tham
Keyword(s):  
Large Time ◽  
Tracer Gas ◽  
Time Constants ◽  
Air Handling Units ◽  
Gas Measurement

Multizone, single tracer gas measurement system for ventilation research

1993 ◽  
Vol 64 (3) ◽  
pp. 806-809 ◽  
Author(s):  
Duncan A. Phillips ◽  
Gordon M. Bragg ◽  
Elizabeth J. Weckman
Keyword(s):  
Measurement System ◽  
Tracer Gas ◽  
Gas Measurement

A Low-Frequency Filter in Inertial Applications

2015 ◽  
Vol 645-646 ◽  
pp. 875-880
Author(s):  
Qiang Li ◽  
Xiao Wei Liu ◽  
Liang Yin ◽  
Jia Jun Zhou
Keyword(s):  
Large Time ◽  
Cutoff Frequency ◽  
Low Frequency ◽  
Frequency Filter ◽  
Time Constants ◽  
Operational Transconductance Amplifiers ◽  
Technical Requirements ◽  
Low Pass ◽  
Transconductance Amplifiers ◽  
Current Shunt

A fourth-order cascade low-pass transconductance capacitor filter is designed, and the coefficients of the filter are calculated. For the implementation of large-time constants the current shunt technique and the current cancellation technique are employed in the operational transconductance amplifiers. The whole filter is simulated in Hspice, the the cutoff frequency is 150.2Hz and the THD of the filter is 65dB, which meet the technical requirements of the inertial applications.

Tracer Gas Measurement Systems Compared in a Multifamily Building

2009 ◽  
pp. 5-5-16 ◽  
Author(s):  
DT Harrje ◽  
RN Dietz ◽  
M Sherman ◽  
DL Bohac ◽  
TW D'Ottavio ◽  
...  
Keyword(s):  
Tracer Gas ◽  
Measurement Systems ◽  
Gas Measurement

A dual-pulse method for modeling processes with large time constants

1987 ◽  
Vol 26 (12) ◽  
pp. 2498-2501 ◽  
Author(s):  
Kannan M. Moudgalya ◽  
William L. Luyben ◽  
Christos Georgakis
Keyword(s):  
Large Time ◽  
Pulse Method ◽  
Modeling Processes ◽  
Time Constants

scholarly journals Estimation of Uncertainty in Tracer Gas Measurement of Air Change Rates

2010 ◽  
Vol 7 (12) ◽  
pp. 4238-4249
Author(s):  
Atsushi Iizuka ◽  
Yumiko Okuizumi ◽  
Yukio Yanagisawa
Keyword(s):  
Tracer Gas ◽  
Gas Measurement ◽  
Estimation Of Uncertainty
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