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Okazaki, Japan

Yang C.,University of Shizuoka | Yang C.,Huazhong University of Science and Technology | Ando K.,Nitto Kogyo Corporation | Nakayama A.,University of Shizuoka | Nakayama A.,Wuhan Polytechnic University
Transport in Porous Media | Year: 2011

A local thermal non-equilibrium model has been considered for the case of thermally fully developed flow within a constant heat flux tube filled with a porous medium. Exact temperature profiles for the fluid and solid phases are found after combining the two individual energy equations and then transforming them into a single ordinary differential equation with respect to the temperature difference between the solid phase and the wall subject to constant heat flux. The exact solutions for the case of metal-foam and air combination reveal that the local thermal equilibrium assumption may fail for the case of constant heat flux wall. The Nusselt number is presented as a function of the Peclet number, which shows a significant increase due to both high stagnant thermal conductivity and thermal dispersion resulting from the presence of the metal-foam. © 2011 Springer Science+Business Media B.V. Source


Ando K.,Nitto Kogyo Corporation | Hirai H.,MItsubishi Electric | Sano Y.,Okayama University
Open Transport Phenomena Journal | Year: 2013

An exhaustive experimental investigation has been carried out for accurate determination of interstitial heat transfer coefficients of ceramic foams in forced convective flows. The single-blow method was used, in which, the fluid temperature varies with time and convective heat transfer becomes time-dependent. The method results in a transient and conjugate heat transfer phenomena between the foam and fluid. These transient temperature data are then compared with the theoretical results to obtain the corresponding interstitial heat transfer coefficients between the fluid and foam solid surface. The interstitial coefficients thus determined are compared against available sets of experimental data, so as to examine the consistency among the reported experimental data. © Ando et al.; Licensee Bentham Open. Source


Kuwahara F.,University of Shizuoka | Yang C.,University of Shizuoka | Yang C.,Huazhong University of Science and Technology | Ando K.,Nitto Kogyo Corporation | And 2 more authors.
Journal of Heat Transfer | Year: 2011

An effective porosity concept has been introduced to account for the effects of tortuosity and thermal dispersion on the individual effective thermal conductivities of the solid and fluid phases in a fluid-saturated porous medium. Using this effective porosity concept, a thermal nonequilibrium model has been proposed to attack locally thermal nonequilibrium problems associated with convection within a fluid-saturated porous medium. Exact solutions are obtained, assuming a plug flow, for the two cases of thermally fully developed convective flows through a channel, namely, the case of isothermal hot and cold walls and the case of constant heat flux walls. These exact solutions for the cases of metal foam and air combination reveal that the local thermal equilibrium assumption may hold for the case of isothermal hot and cold walls, but may fail for the case of constant heat flux walls. © 2011 American Society of Mechanical Engineers. Source


Trademark
Nitto Kogyo Corporation | Date: 2012-02-17

electrical power distribution boards; electrical power panel boards; high-voltage power receiving equipment; electric control panels; electric terminal panels; switchboards; circuit breakers; electric switches; disconnectors; electrical terminal blocks; housings and mounting racks for electrical power distribution boards; housings and mounting racks for electrical power panel boards; housings and mounting racks for high-voltage power receiving equipment; housings and mounting racks for electric control panels; distribution boxes for electrical power; electric connection boxes; electric junction boxes; switch boxes; housings and mounting racks for switchboards; charging appliance for electric vehicles; housings and mounting racks for charging appliance for electric vehicles; electronic control device and remote surveillance device for use in measuring, controlling and monitoring electric power, voltage, electric current and temperature; remote monitoring system for monitoring electric load current of power distribution panels; housings and mounting racks for electric monitoring panels; housings and mounting racks for broadcasting equipment; housings and mounting racks for telecommunication signal distribution; housings and mounting racks for telecommunications transmitters; housings and mounting racks for television broadcasting apparatus; housings and mounting racks for telephone apparatus; telecommunication wiring boards; housings and mounting racks for electronic machines and apparatus, namely, computers; housings and mounting racks for electronic machines and apparatus, namely, computer servers; computer programs for selecting housings and mounting racks for broadcasting equipment, telecommunication devices and apparatus for LAN system; computer programs for selecting electrical power panel boards; computer programs for selecting cooling apparatus used in conjunction with housings and mounting racks for telecommunication devices and apparatus; computer programs for selecting cooling apparatus for electrical power distribution boards and electric control panels; electronic advertisement and messaging display unit with multi-networking (TCP/IP) capabilities, remote connectivity and data regeneration capabilities from internal memory; housings and mounting racks for electronic advertisement and messaging display units; housings for electronic circuits; housings and mounting racks for measuring and testing apparatus and instruments, namely, devices for use in measuring and testing electric current, voltage, electric power and abnormal signals of both electric installations and industrial and commercial plant manufacturing machines; boxes for wattmeters; device for measuring electric power, voltage and electric current of both electric installations and industrial and commercial plant manufacturing machines; electronic alarm panels for warning of abnormalities in electric systems; ducting for electric cables; junction boxes; junction boxes for optical fibers; and electric wires and cables; control panels in the nature of panel units for air conditioning apparatus that controls the flow of cold air and exhaust heat. heat exchangers not being parts of machines; cooling units for industrial purposes; air conditioning apparatus for industrial purposes; peltier cooling apparatus; heating units for industrial purposes; industrial dehumidifiers; air conditioning apparatus for supplying cooled air to housings and racks for electric apparatus; and panel units for air conditioning apparatus that controls the flow of cold air and exhaust heat sold as part of air conditioning apparatus; panel units for air conditioning apparatus that controls the flow of cold air and exhaust heat being structural parts for conditioning apparatus; ventilating exhaust fans; ventilating fans for commercial or industrial use; ventilating louvers; and air conditioning fans for raised floor.


Trademark
Nitto Kogyo Corporation | Date: 2009-10-20

Housing cabinets and boxes for electrical machines, apparatus and electronic equipment, namely, electrical distribution boards, electrical distribution consoles, automatic switchboards, electric control panels, boards and tables, all for use in monitoring the electric current, voltage, electric power and abnormal signals of both electric installations and industrial and commercial plant manufacturing machines, and electrical switch, junction and branch boxes; housing cabinets and boxes for telecommunication transmitters, televisions and telephones; telecommunication junction boxes; housing cabinets and boxes for electronic machines and apparatus, namely, computers and servers; housing cabinets and boxes for measuring and testing apparatus and instruments, namely, devices for use in measuring and testing electric current, voltage, electric power and abnormal signals of both electric installations and industrial and commercial plant manufacturing machines; cases for electronic machines and apparatus, namely, computers and servers; cases for measuring and testing apparatus and instruments, namely, devices for use in measuring and testing electric current, voltage, electric power and abnormal signals of both electric installations and industrial and commercial plant manufacturing machines; and junction boxes for optical fibers.

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