John Otvos Phones & Addresses
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1600 Canyon Rd, Moraga, CA 94556 (925) 377-0228 (925) 377-0337
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Kailua Kona, HI
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Ocala, FL
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110 Ravenhill Rd, Orinda, CA 94563 (925) 254-1986
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Pleasant Hill, CA
Business Records
Name / Title
Company / Classification
Phones & Addresses
President
RAVENHILL TECHNICAL SERVICES, INC
110 Ravenhill Rd, Orinda, CA 94563
Publications
Us Patents
Method And Apparatus For Measuring Heat Transfer In Small Diameter Pipes Using Acoustic Signals
View pageUS Patent:
55026524, Mar 26, 1996
Filed:
Aug 24, 1994
Appl. No.:
8/296015
Inventors:
Austin C. Hoggatt - Oakland CA
Martin Graham - Berkeley CA
David D. Cudaback - Oakland CA
Melvin P. Klein - Berkeley CA
John W. Otvos - Orinda CA
Paul L. Richards - Berkeley CA
Martin Graham - Berkeley CA
David D. Cudaback - Oakland CA
Melvin P. Klein - Berkeley CA
John W. Otvos - Orinda CA
Paul L. Richards - Berkeley CA
International Classification:
G06F 1520
US Classification:
364510
Abstract:
Methods and apparatae for metering energy consumption in a mass transfer heat delivery system using acoustic signals. A first type of method uses the phase difference between two simultaneously generated acoustic signals to determine the flow rate of liquid through a station of the heat delivery system. A first transducer and second transducers are used to transmit the first and second acoustic signals, respectively, through the liquid in response to an applied drive signal. The drive signal is removed from the first and second transducers such that the first and second transducers may be used to detect the arrival of the second and first acoustic signals, respectively. A phase detector measures the phase difference between the two acoustic signals as detected by the first and second transducers. A second type of method uses time lag analysis. A first transducer is used to transmit an acoustic signal through the liquid towards a second transducer in response to an applied drive signal.