Mitsubishi Heavy Industries Thermal Systems, Ltd.

Mitsubishi Heavy Industries Limited

Taichi Yoshii

Naoya Miyoshi

Takeshi Kaneko

Tatsuo Ishiguro

Yoshie Togano

Yoshiaki Ito

Yasushi Hasegawa

Hideyuki Uechi

Yuichi Otani

Masahiko Nagai

Yasutaka Aoki

Takahiro Hidaka

Nobuki Oka

Ryo Kamito

Norihisa Horaguchi

Fumito Kajitani

Norito Katsuki

Kanako Nagayama

Wenping Wu

An a purge device that includes an air purge pipe connected to a condenser and configured to extract a mixed gas containing a refrigerant gas and air from the condenser; a separation film provided to the air purge pipe and configured to separate, by a pressure difference, air from the mixed gas extracted by the air purge pipe; an exhaust pipe configured to externally guide a gas containing air separated by the separation film; a first valve provided to the exhaust pipe; a vacuum pump provided downstream of the first valve in the exhaust pipe and configured to externally discharge a gas present inside the exhaust pipe; and a control unit, the control unit activates the vacuum pump, opens the first valve, then closes the first valve to stop permeation of air caused by a pressure difference when detecting that a predetermined amount of air has permeated the separation film.

Air purge device

This refrigeration machine comprises a compressor that compresses a refrigerant, a condenser that condenses the refrigerant which has been compressed by the compressor, an expander that expands the refrigerant which has been condensed by the condenser, a liquid film type evaporator that evaporates the refrigerant which has been expanded by the expander, and an eductor that generates flow speed difference and pressure difference in the refrigerant which has been expanded by the expander and suctions refrigerant stored in the evaporator.

Refrigeration machine

A steam generation apparatus includes: a heat medium flow passage through which a heat medium flows; a primary economizer disposed in the heat medium flow passage; a secondary economizer disposed in the heat medium flow passage at an upstream side of the primary economizer with respect to a flow direction of the heat medium; a primary evaporator disposed in the heat medium flow passage at an upstream side of the secondary economizer with respect to the flow direction of the heat medium; a first flash tank for generating flash steam; a first feed water line configured to supply water heated by the primary economizer to the secondary economizer; and a second feed water line disposed so as to branch from the first feed water line and configured to supply the water heated by the primary economizer to the first flash tank.

Steam generation apparatus and exhaust gas heat recovery plant

An evaporator () is provided with a casing (), a refrigerant supply section (), a first heat transfer pipe group (), and a second heat transfer pipe group (). The first heat transfer pipe group () is disposed in the lower part of the space in the casing () so as to be immersed in the refrigerant and comprises a plurality of heat transfer pipes () through which liquid to be cooled flows. The second heat transfer pipe group () is provided in the space in the casing () at a position below the refrigerant supply section () and above the liquid level of the refrigerant, and comprises a plurality of second heat transfer pipes () through which liquid to be cooled flows.

Evaporator and refrigeration machine

An evaporator () comprising: a casing (); a plurality of heat transfer tubes () which are immersed in a liquid refrigerant (RL) in a liquid-phase region (A) and in the interior of which a fluid having a higher temperature than that of the liquid refrigerant (RL) flows; and a demister () which is provided so as to cover from above the liquid surface (Ls) of the liquid refrigerant (RL) accommodated in the liquid-phase region (A), and which traps liquid droplets contained in evaporated gas refrigerant (RG). The demister () comprises inclined sections () which, when viewed in a cross section intersecting the axial line (O) of the heat transfer tubes (), separate from the liquid surface (Ls) toward the center portion of the casing () along the liquid surface (Ls).

Evaporator and refrigeration system

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Tokyo, Japan

Taichi Yoshii