Low-pollution utilization of a ship’s excess heat for cooling

COOL4SEA recycles thermal waste energy from the ship’s engines for the air-condition cooling system. This reduces the need for expensive fuel-generated electricity for cooling. In addition, the unique refrigeration technology uses no environmentally harmful refrigerant gases.

The principle behind COOL4SEA’s eco-friendly cooling technology

COOL4SEA’s air-condition cooling technology builds on a well-known principle that was originally developed by Albert Einstein and Leó Szilárd almost 100 years ago. These two world-famous scientists patented a method that cools by using the power of a heat source. This principle is also known as absorption cooling.

Air condition cooling system

Absorption cooling is based on the ability of certain liquids to absorb another gas at low temperatures, and then to release it at a higher temperature. The chemical compound lithium bromide (LiBr) is often used as an absorbent for this process — with water as a refrigerant. The combination of these two substances can effectuate cooling down to a temperature of +5°C.

Absorption cooling has not been widely used on ships. This is primarily because of the previously used design. The processes used in absorption cooling are very sensitive to motion and are quickly disrupted at sea.

COOL4SEA has developed, tested and patented a unique design that ensures that the processes can function effectively at inclinations of up to 45°. The design has its origin in Einstein and Szilard’s principle but is not otherwise similar. The design has been developed specifically for dynamic environments and for ships in particular.

A reliable design with minimal maintenance

COOL4SEA’s air-condition cooling technology utilizes the unique properties of lithium bromide. Lithium bromide is not harmful to the environment or to human health. However, it does react aggressively with certain metals. Because of this, COOL4SEA’s cooling equipment is entirely constructed of plastic (PE and PP) and acid-resistant steel (316L).

Furthermore, since the design has very few moving parts, the solution is very reliable and requires only minimal maintenance.

It can be mounted on ships that are in service and easily adapted to conditions in the engine room

COOL4SEA’s air-condition cooling technology is modular, and the modules can be brought into the engine room through the ship’s hatches while the ship is in service. This means that it is not necessary to lay-up or dock the ship during installation.

The modular design ensures that the design of the cooling technology has a high degree of flexibility and can be adapted to the conditions found in most engine rooms.

High efficiency through process monitoring

The cooling occurs as a result of a number of physical/chemical processes. In order to achieve high efficiency, it is important that the processes which are the key to this cooling technology can function optimally. Therefore, the entire process must be monitored around the clock. The only requirement for this is access to an internet connection.