36results about How to "Improve cooling reliability" patented technology

Disclosed herein is a method of controlling a linear expansion valve of a cooling cycle apparatus. The method comprises a first step of calculating a target opening level value according to suction overheat level of compressors to control a linear expansion valve based on the calculated target opening level value, and a second step of calculating a new target opening level value according to the suction overheat level of the compressors and discharge temperature of the compressors to control the linear expansion valve based on the calculated new target opening level value. Consequently, the discharge temperature of the compressors is prevented from being excessively increased, and therefore, the compressors are prevented from being overheated and damaged, and reliability of the cooling cycle apparatus is improved.

The invention discloses an integrated water / oil / tar / coal slurry process nozzle with a gas film protection function. The integrated water / oil / tar / coal slurry process nozzle is of a sleeve-type structure and sequentially comprises a nozzle cooling water outer pipe, a nozzle cooling water inner pipe, an outer epoxy pipe, a gas film oxygen pipe, a coal slurry pipe and a central oxygen pipe from the outermost layer to the innermost layer; an ignition rod is arranged in the central oxygen pipe, and the length of the gas film oxygen pipe can be larger than the length of the outer epoxy pipe and can also be 1 / 2 smaller than the length of the outer epoxy pipe; and the ignition end of the nozzle is in a necking shape, and the outlet end close to the central oxygen pipe is provided with an ignitionrod rotational flow support for supporting the front end of the ignition rod. Through isolation of different channels, direct contact friction between water / oil / tar coal slurry and the inner wall faces of the channels can be greatly reduced, thus the protection effect is achieved, and the service life of the nozzle is greatly prolonged; and the ignition rod rotational flow support is adopted, theaxial speed of the water / oil / tar coal slurry and a central oxygen mixing medium after internal mixing is decreased, the axial speed of the mixing medium is increased, the water / oil / tar slurry and central oxygen are internally mixed more uniformly, and the atomization performance of the nozzle is improved.

In a metal-carbon particle composite material (30), one or more flake-graphite-particle dispersion layers (1) in which flake graphite particles (1a) as carbon particles are dispersed in a metal matrix(9), one or more carbon fiber dispersion layers (2) in which carbon fibers (2a) as carbon particles are dispersed in the metal matrix (9), and one or more metal layers (3) formed in the metal matrix(9) are provided in layered fashion. The one or more flake-graphite-particle dispersion layers (1), the one or more carbon fiber dispersion layers (2), and the one or more metal layers (3) are joinedand integrated. Either the flake-graphite-particle dispersion layer (1) or the carbon fiber dispersion layer (2) and the metal layer (3) are arranged in a state of being layered in alternating fashionthroughout substantially the entire thickness direction of the composite material (30).