Accession Number : AD0616387

Title :   THERMAL PORTS IN LINEAR NETWORK THEORY,

Corporate Author : GEORGE WASHINGTON UNIV WASHINGTON D C SCHOOL OF ENGINEERING AND APPLIED SCIENCE

Personal Author(s) : Anand,D. K. ; DE Pian,Louis

Report Date : MAY 1965

Pagination or Media Count : 98

Abstract : Networks involving mechanical and electrical energy have been previously analyzed from a port parameter viewpoint but without considering thermal energy. This dissertation presents an analytical study to consider thermal ports in networks. Onsager's equations are integrated and rewritten as port equations similar to immittance formalism. The port parameters resulting from Onsager's equations are found to be restrictive for general application to an electrical-thermal transducer. The concept of scattering matrices is applied to thermal ports and a set of equations is obtained. It is found that the scattering parameters are functions of the physical properties of the device and the biasing conditions. The scattering parameters are evaluated for static and dynamic operation. Signal power gain is considered and a criterion for passivity and activity is obtained. It is concluded that thermal ports can be considered in network theory provided that the scattering matrix technique is used. Furthermore, linear operation around the quiescent point must be assumed. (Author)

Descriptors :   (*THERMOELECTRICITY, TRANSDUCERS), (*TRANSDUCERS, THERMOELECTRICITY), NETWORKS, THEORY

Distribution Statement : APPROVED FOR PUBLIC RELEASE