A gasification system includes a countercurrent type heat exchanger that includes a low-temperature side flow channel through which a gasification feedstock flows, and a high-temperature side flow channel to which treated water in a supercritical state is introduced. The treated water raises a temperature of the gasification feedstock by exchanging heat with the gasification feedstock. The system further includes a reactor that gasifies the gasification feedstock, whose temperature has been raised by the countercurrent type heat exchanger, by heating and pressurizing the gasification feedstock to be in a supercritical state. The reactor discharges the gasification feedstock as treated water in the supercritical state. The system further includes a treated water flow channel that introduces, to the countercurrent type heat exchanger, the treated water that has been discharged from the reactor, and a feedstock introduction port that introduces the feedstock to the low-temperature side flow channel.

A cooling system comprises a compressor, a condenser, an expansion valve, and a heat exchanger. The latter comprises a vessel for containing a refrigerant, the vessel having an inner space bounded by a closed surface of a vessel wall, the vessel comprising an inlet and an outlet for transport of refrigerant into and out of the inner space through the vessel wall. A tube is disposed at least partly inside the inner space, wherein a first end of the tube is fixed to a first orifice of the vessel wall and a second end of the tube is fixed to a second orifice of the vessel wall to enable fluid communication into and/or out of the tube through the first orifice and the second orifice. A pressure control means controls a pressure in the inner space based on a target temperature.

A vessel for containing a refrigerant comprising an inner wall and an outer wall arranged concentrically and having an inner space bounded by the inner wall and outer wall, an inlet and an outlet for transport of refrigerant into and out of the inner space; a tube inside the inner space arranged turn around the inner wall; an input tube fluidly connected to the inner space and arranged to allow flow of the refrigerant through the input tube into the inner space; an output tube connected to the inner space and arranged to allow flow of the refrigerant out of the inner space into the output tube; a compressor arranged to receive the refrigerant from the output tube and to compress the refrigerant; and a condenser arranged to receive the compressed refrigerant fluid from the compressor, to condense the refrigerant, and to forward the compressed refrigerant into the input tube.

A subsea cooler has at least one pipe (1) and a housing (4). The pipe has an inlet (2) and an outlet (3) for a fluid to be cooled and comprises straight sections (5) connected by bend sections (6). The housing (4) encloses at least a part of the pipe and comprises an inner surface forming a flow channel (8) extending along and surrounding the pipe. The flow channel (8) is fluidly connected to an inlet (9) and an outlet (10) for a cooling fluid and a pumping element for driving the cooling fluid through the flow channel (8). At least one sacrificial anode (11) is positioned in the flow channel (8) such that the sacrificial anode is in electrical contact with the pipe (1).

A subsea cooler has at least one pipe (1) and a housing (4). The pipe has an inlet (2) and an outlet (3) for a fluid to be cooled and comprises straight sections (5) connected by bend sections (6). The housing (4) encloses at least a part of the pipe and comprises an inner surface forming a flow channel (8) extending along and surrounding the pipe. The flow channel (8) is fluidly connected to an inlet (9) and an outlet (10) for a cooling fluid and a pumping element for driving the cooling fluid through the flow channel (8). At least one sacrificial anode (11) is positioned in the flow channel (8) such that the sacrificial anode is in electrical contact with the pipe (1).

A heat exchanger (100) suitable for use as a pre cooler in an internal combustion engine exhaust gas recirculation system comprises one or a plurality of rigid tubes (103), each having one or more internal cooling fins (111) to act as heat exchange surfaces to transfer heat from a gas to the walls of the rigid tubes. The rigid tubes are cooled by a liquid coolant surrounding the tubes and contained within an outer jacket (113) surrounding said tubes. The rigid tubes may be straight and smooth, and may be alternated with one or a plurality of bellows sections (108, 104) which provide flexibility to the heat exchanger.

The invention relates to a compressor-heat exchanger unit for a heating-cooling module for a motor vehicle, in which at least one fluid serving as a coolant flows, comprising a compressor device for compressing the first fluid, at least one heat exchanger device that has at least one first circuit for the first fluid to flow through and a second circuit for a second fluid to flow through, this heat exchanger unit being arranged in the fluid stream after the compressor device, characterized in that the first fluid is guided at least partially in flow channels of the first circuit that at least partially enclose the compressor device.

The invention relates to a compressor-heat exchanger unit for a heating-cooling module for a motor vehicle, in which at least one fluid serving as a coolant flows, comprising a compressor device for compressing the first fluid, at least one heat exchanger device that has at least one first circuit for the first fluid to flow through and a second circuit for a second fluid to flow through, this heat exchanger unit being arranged in the fluid stream after the compressor device, characterized in that the first fluid is guided at least partially in flow channels of the first circuit that at least partially enclose the compressor device.

A tubular heat exchanger comprising a plurality of shell-side and tube-side fluid passes. The heat exchanger includes an elongated cylindrical shell, a head coupled thereto, and a tube bundle positioned in the shell and supported in part by a tube sheet attached to the head. In one embodiment, the shell of the heat exchanger comprises a plurality of vertically stacked shell-side compartments each defining a shell-side pass. The head of the heat exchanger comprises a plurality of tube-side compartments each defining a tube-side pass. A tube-side fluid enters the head and flows through the tube bundle progressively through a series of tube-side passes to heat the fluid with a shell-side fluid. Each shell-side pass contains multiple tube-side passes. In one embodiment, the tube-side fluid performs a plurality of horizontally arranged tube-side fluid passes in each vertically stacked shell-side fluid pass before cascading vertically to a next shell-side fluid pass.

The present application relates to a spiral heat exchanger and a heat exchange device. The spiral heat exchanger comprises: a core shaft with an axis extending in the left-right direction; a first liquid-passing coiled tape with a spiral liquid flow channel therein wound around the axis of the core shaft at least two circles to form a spiral shape; and seal strips sealed between the sides of two heat conduction thin tapes and the spiral liquid flow channel formed between the seal strips and between the two heat conduction thin tapes, wherein adjacent circles of the first liquid-passing coiled tape is isolated by a certain distance maintained by a duct support to prevent the adjacent circles from sticking to each other to create a blockage in the spiral airflow channel.