An anti-fouling composition has been developed that provides an advantageous reduction in the fouling of a structural part in a petroleum-refining system including reducing coking reactions and inhibiting deposition of solids in equipment and lines used for crude oil production and processing. The anti-fouling compositions contain a resin comprising an alkyl phenol-aldehyde resin, a polyolefin comprising a polyalkylene ester, polyolefin amide alkeneamine, polyethylene polyamine, polyalkyleneimine, or a combination thereof; and optionally, a polyalkylene imide, an amine-substituted polyalkylene imide, or a combination thereof; and optionally, N,N′-disalicylidene-1,2-propanediamine.

This air conditioner unit comprises a heat exchanger, but does not comprise any device that forcibly passes air to the heat exchanger. The heat exchanger can be installed in a partition part that demarcates a target space from areas outside of the target space, and is configured such that an airflow in contact with the heat exchanger can pass through. The heat exchanger is configured so that a fluid can flow through the interior thereof. Due to a fluid having a temperature different from the outside air temperature flowing through the heat exchanger, the temperature of the airflow flowing from outside of the target space into the target space is changed, and the air inside the target space is conditioned by the airflow of which the temperature was changed.

A hydrophilic slippery treatment agent which allows for the formation of a coating having hydrophilicity concurrently with water droplet removability via drying at lower temperatures, a surface treatment method using the hydrophilic slippery treatment agent, a substrate having a hydrophilic slippery coating formed thereon by the surface treatment method, and a fin material for a heat exchanger having a hydrophilic slippery coating formed thereon by the surface treatment method are provided. The treatment agent contains an organosilicon compound with a specific structure including both a hydrophilic-chain-containing group and a hydrolyzable group, and a metal alkoxide.

A hydrophilic slippery treatment agent which allows for the formation of a coating having hydrophilicity concurrently with water droplet removability via drying at lower temperatures, a surface treatment method using the hydrophilic slippery treatment agent, a substrate having a hydrophilic slippery coating formed thereon by the surface treatment method, and a fin material for a heat exchanger having a hydrophilic slippery coating formed thereon by the surface treatment method are provided.

The treatment agent contains an organosilicon compound with a specific structure including both a hydrophilic-chain-containing group and a hydrolyzable group, and a metal alkoxide.

A tube sheet for a shell and tube heat exchanger. The tube sheet includes a substrate having a plurality of through holes; a plug made of a plug material located in each through hole, each plug having a through passage shaped to receive an end of a corresponding tube from the heat exchanger; and a lining made of a lining material, the lining encapsulates the substrate and fills a gap between each plug and the substrate.

A tube sheet for a shell and tube heat exchanger. The tube sheet includes a substrate having a plurality of through holes; a plug made of a plug material located in each through hole, each plug having a through passage shaped to receive an end of a corresponding tube from the heat exchanger; and a lining made of a lining material, the lining encapsulates the substrate and fills a gap between each plug and the substrate.

A heat exchanger for an air-conditioning circuit of a vehicle. The heat exchanger enables heat exchange between fluids and has a surfaces in contact with one of the fluids. The surface is formed from aluminum and/or from aluminum alloy. The surface is coated with an alumina layer and a reinforcing layer. The reinforcing layer includes an organic substance and a mineral substance. The organic substance includes at least one polymer and the mineral substance is capable of reacting with the aluminum in order to form an anticorrosion material.

A heat exchanger for an air-conditioning circuit of a vehicle. The heat exchanger enables heat exchange between fluids and has a surfaces in contact with one of the fluids. The surface is formed from aluminum and/or from aluminum alloy. The surface is coated with an alumina layer and a reinforcing layer. The reinforcing layer includes an organic substance and a mineral substance. The organic substance includes at least one polymer and the mineral substance is capable of reacting with the aluminum in order to form an anticorrosion material.

A refrigeration appliance includes a body defining a compartment, and an evaporator configured to flow air from the compartment over a heat exchange surface. The evaporator has a deicing nanocoating coated on a portion of the heat exchange surface. The refrigeration appliance also includes an evaporator fan directing cooled air from the evaporator to the compartment. The deicing coating is a hydrogel forming a coated surface on the portion of the heat exchange surface with an ice nucleation temperature of −15 to −40 degrees C. and a water contact angle of 100 to 140 degrees.

A refrigeration appliance includes a body defining a compartment, and an evaporator configured to flow air from the compartment over a heat exchange surface. The evaporator has a deicing nanocoating coated on a portion of the heat exchange surface. The refrigeration appliance also includes an evaporator fan directing cooled air from the evaporator to the compartment. The deicing coating is a hydrogel forming a coated surface on the portion of the heat exchange surface with an ice nucleation temperature of −15 to −40 degrees C. and a water contact angle of 100 to 140 degrees.