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Patent Searching and Data


Title:
ISOTHERMAL COMPRESSION/EXPANSION UNIT HEAT MACHINE
Document Type and Number:
Japanese Patent JPH08145488
Kind Code:
A
Abstract:

PURPOSE: To provide no public pollution and energy conservation by providing a gas sealing means used for a drive wall, a fixed wall, a piston and cylinder mechanism or a bellows diaphragm mechanism as a fixed component, and disposing a fixed component in a sphere in which a diameter is about a heat diffusion distance with the gas molecules as a center.

CONSTITUTION: Even when any of a piston and cylinder mechanism and a bellows diaphragm mechanism is used for a compression/expansion unit, a fixed wall (fixed wall 1 and a driving wall 2) is disposed in a sphere having a diameter is, with operating gas molecules in the unit as a center, heat diffusion distance D<D=(atw)1/2, where a is heat diffusion rate [m2s-1], a=k/Cp' is thermal conductivity [J/(msK)], Cp' is isobaric specific heat per unit volume [J/(m3K)], tw is the retention time [s] near the inner wall of the unit with the gas molecules. The temperature of the gas is always held at the value near the temperature of the solid component, and the isothermal of the gas compression is realized.


Inventors:
GOTO HIDEKAZU
AN MATSUKENNA
KASE SUSUMU
Application Number:
JP1994000289651
Publication Date:
June 07, 1996
Filing Date:
November 24, 1994
Export Citation:
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Assignee:
RIKAGAKU KENKYUSHO
HITACHI LTD
FUJITSU LTD
IBM JAPAN
NEC CORP
International Classes:
F25B9/00; F25B9/06; (IPC1-7): F25B9/06; F25B9/00
Attorney, Agent or Firm:
須山 佐一