A heat exchanger includes a conduit configured to flow a refrigerant therethrough and a fin coupled to the conduit. The fin has a slot formed therethrough, in which the slot has a first portion and a second portion continuous with the first portion and disposed at an angle relative to the first portion.

The present disclosure relates to a heat exchanger and an air conditioner including the same. The heat exchanger may be provided for heat exchange between refrigerant and air. The heat exchanger may include a plurality of refrigerant tubes that are disposed with a clearance (C) therebetween in a first direction (A), in which the air moves, and are disposed to be spaced apart in a second direction (B) crossing the first direction (A) and a plurality of heat exchange fins that are disposed between the plurality of refrigerant tubes disposed to be spaced apart in the second direction (B).

The present disclosure relates to a heat exchanger and an air conditioner including the same. The heat exchanger may be provided for heat exchange between refrigerant and air. The heat exchanger may include a plurality of refrigerant tubes that are disposed with a clearance (C) therebetween in a first direction (A), in which the air moves, and are disposed to be spaced apart in a second direction (B) crossing the first direction (A) and a plurality of heat exchange fins that are disposed between the plurality of refrigerant tubes disposed to be spaced apart in the second direction (B).

Disclosed is an evaporator including a case formed in an empty box type and having a storage chamber therein; a cooling tube formed on the case in a preset pattern and filled with refrigerant for cooling therein; a heating tube formed on the case in a preset pattern so as not to be overlapped with the cooling tube and filled with working fluid for defrosting therein; and a heating unit fixed to an external surface of the case corresponding to the heating tube and configured to heat the working fluid within the heating tube.

Disclosed is an evaporator including a case formed in an empty box type and having a storage chamber therein; a cooling tube formed on the case in a preset pattern and filled with refrigerant for cooling therein; a heating tube formed on the case in a preset pattern so as not to be overlapped with the cooling tube and filled with working fluid for defrosting therein; and a heating unit fixed to an external surface of the case corresponding to the heating tube and configured to heat the working fluid within the heating tube.

A heat exchanger which may be used in an engine, such as a vehicle engine for an aircraft or orbital launch vehicle. is provided. The heat exchanger may be configured as generally drum-shaped with a multitude of spiral sections, each containing numerous small diameter tubes. The spiral sections may spiral inside one another. The heat exchanger may include a support structure with a plurality of mutually axially spaced hoop supports, and may incorporate an intermediate header. The heat exchanger may incorporate recycling of methanol or other antifreeze used to prevent blocking of the heat exchanger due to frost or ice formation.

A vessel includes first and second portions that are non-permeable to a fluid and a third portion that is permeable to fluid. The first potion defines at least one exterior wall defining an exterior container. The second portion defines at least one interior wall defining an interior container encapsulated by the exterior container. The third portion is positioned between the at least one exterior wall and the at least one interior wall, is integrally formed with the first portion and the second portion, and has a porous structure with non-uniform connected porosity.

A profile of piping, particularly for making a heat exchanger for a condensation boiler. The cross-section of the profile has a trapezoidal portion with two bases and two sides, and a triangular portion with a base and two sides. A first side of the trapezoidal portion coincides with the base of the triangular portion. The second side and the bases of the trapezoidal portion and the sides of the triangular portion form the inner walls of the profile. A first angle between the first base of the trapezoidal portion and the first side of the triangular portion adjacent thereto is 45°-135°, preferably 90°. A second angle between the second base of the trapezoidal portion and the second side of the triangular portion adjacent thereto is 180°-270°, preferably 225°. A coiled heat exchanger for condensation boilers providing said profile and a condensation boiler providing said heat exchanger are provided.

There is provided a sublimation defrosting method for removing a frost layer adhering to a cooling surface for cooling a to-be-cooled gas, including a heating/temperature-rising step of heating an adhesion portion of the cooling surface, to which the frost layer adheres, to rise a temperature of the adhesion portion by a heat source located on an adhesion portion side with respect to the frost layer, under a temperature condition below a melting point of the frost layer.

There is provided a sublimation defrosting method for removing a frost layer adhering to a cooling surface for cooling a to-be-cooled gas, including a heating/temperature-rising step of heating an adhesion portion of the cooling surface, to which the frost layer adheres, to rise a temperature of the adhesion portion by a heat source located on an adhesion portion side with respect to the frost layer, under a temperature condition below a melting point of the frost layer.