A cooling unit for cold air generation, in particular for snow-making systems, has a mechanically operating de-icing device which comprises at least one rotary shaft (6), which extends between two tube layers (5) transversely to the refrigerant guide tubes and is displaceable in the longitudinal direction of the refrigerant guide tubes (4), and a rotary drive for rotating the rotary shaft (6). The removal elements (16) are designed as rotary elements which are fastened to the rotary shaft (6) and which remove the ice and frost build-up from the refrigerant guide tubes (4) by means of a rotary movement.

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 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 heat exchanger includes: a surface with a water-repellent coating. The surface has a surface structure that includes protrusions. Condensed water droplets, each having a droplet diameter that allows a subcooled state to be maintained even under a predetermined freezing condition, combine with one other on the surface and generate an energy. The surface structure uses the energy to remove the combined condensed water droplets from the surface.

The present disclosure provides a drain assembly for an AC furnace coil unit. The drain assembly includes a drain pan defining one or more drain channels extending longitudinally therealong, and an arcuate heat shield detachably coupled to the drain pan. The arcuate heat shield extends along a length of the drain pan. The arcuate heat shield is configured to define a cavity between an inner surface thereof and the drain pan, and distribute airflow, incident on an outer surface thereof, along longitudinal sides of the drain pan.

A steam condenser for a cooking oven having a housing, side walls and at least partly open front side and back side to facilitate flow of cooling air through the steam condenser, and a heat exchanger located in said housing that includes connected finned tubes through which water vapor with other gases from the cooking oven are guided. The steam condenser includes a condensate drainage system that the finned tubes are arranged between the side walls of the housing and in a descending manner, such that each tube has one end attached to the side wall of the housing higher than the other end, and each two adjacent ends of adjacent tubes are located one higher than the other. The adjacent ends of the adjacent finned tubes are connected by 180° connectors, such that the finned tubes are interconnected in a zigzag manner. The highest or the lowest of the finned tubes is connected to a final descending tube which has orifices in an upper part and located on the side of the final descending tube that is facing away from the flow of the cooling air.

A condensation tray for condensing tankless water heaters is disclosed. The tray can include a plurality of peaks and valleys. The peaks can divert condensate runoff from a secondary heat exchanger into the valleys so as to prevent the condensate from falling on a primary heat exchanger. The tray includes gas apertures that enable combustion gases to pass through the tray and across the secondary heat exchanger. Overhangs on the peaks can prevent the condensate from draining through the gas apertures.

An air cooler assembly includes an air cooler having an air inlet manifold, an air outlet manifold, and a heat exchanger core connected at a first end thereof to the air inlet manifold and at a second end thereof to the air outlet manifold. A water separator includes a chamber having a first end and an opposed second end, an air inlet proximate the first end and connected to the air outlet manifold, and an air outlet proximate the second end. A water outlet is formed in a bottom surface of the chamber, and a channel is positioned beneath the water outlet. A condensate outlet is positioned on a bottom surface of the channel. A helical blade has a first end and a second end, and is positioned within the chamber between the air inlet and the air outlet.

A refrigerator includes an evaporator inclined in a left-right direction and a defrosting water tray provided below the evaporator to collect defrosting water, and having inclined surfaces corresponding to a shape of the evaporator.

A heat exchange device includes a heat exchanger and a water guider. The water guider is arranged on the heat exchanger and has a water guide groove, and condensed water on at least a part of the heat exchanger can flow out through the water guide groove. The heat exchange device has a good drainage performance, can prevent the condensed water from accumulating, and thus improves a heat exchange area and a heat exchange efficiency of the heat exchanger.