Nippon Paints reflects on coatings

(Posted on 21/07/19)

White paint doesn't look clean for long. Yet ship coatings of a darker hue absorb more heat, increase the heating, ventilation, and air conditioning (HVAC) requirement and, consequently, electrical load, resulting in higher fuel consumption and emissions.

So, what the industry needs is a darker coating that fails to absorb the heat, right? A coating like Nippon Paint Marine’s Ever Cool.

Introduced to the market following extensive shipboard trials, Ever Cool is specially formulated to reduce the effect of the Sun’s infrared rays on ship operations.

The temperature difference between, for example, a deck coated with conventional paint system and one with Ever Cool can be up to about 28°C, with the specially formulated coating reflecting up to 80% of the Sun’s heat from coloured coatings.

Requiring no special application tools or processes, Nippon Paint Marine uses advanced formulated reflective pigments to prevent surface temperature increases and lower heat transfer through steal plate and other structures.

During tests on the compass deck of a Panamax bulk carrier, heat sensors recorded a surface temperature of 70°C on conventionally coated areas and 42°C on areas applied with Ever Cool.

A similar test carried out over six months took place on the deck above a vessel’s wheelhouse. Measuring some 4,379 different points, the sensors registered no solar reflecting effects during the low temperature months of January and February, but when the mercury began to rise from March, “we noticed a huge amount of solar reflectance,” said Olaf Töbke, Director, Nippon Paint Marine (Europe).

Where a conventional grey polyurethane coat had a deck surface temperature of 71°C, the grey coloured Ever Cool was 23°C cooler. Ever Cool in green had a temperature of 51°C against the 64°C of a similar coloured epoxy. Red coloured polyurethane and epoxy-coated decks each had a surface temperature of 71°C, while the red coloured Ever Cool was 54°C.

Explaining Ever Cool’s potential in reducing newbuild and operational costs, Töbke said: “By reducing the surface temperatures of exposed decks, shipbuilders can reduce the insulation requirement, while ship operators can reduce the air conditioning/chiller load, saving fuel and improving the onboard conditions for passengers and crew, especially in tropical climates.”

In addition to decks, the heat resistant coating can also be applied to the topside of ballast water and cargo tanks, to ensure their contents remain at a safe and steady temperature. The technology is also applicable to LNG insulated tanks to lower boil-off gases.

While new to the maritime sector, Nippon Paint has supplies solar reflective paint (SRP) to other industries for a number of years.

The technology is used in the building industry to coat aluminium cladding and a Japanese car manufacturer is using the paint to reduce the interior temperature of parked cars. The car manufacturer found that an SRP-coated car can reduce internal temperatures by about 11% compared to a conventionally painted car.

Latest News

OrbitMI launches enhanced Data-as-a-Service for dry bulk

OrbitMI has announced the launch of its latest Data-as-a-Service (DaaS) offering, tailored specifically... Read more

Flexicon marks 50 years

Flexicon Corporation, a privately-held firm and world leader in bulk handling equipment and systems,... Read more

Siwertell ship loader order for high-capacity fertilizer handling

Bruks Siwertell has secured an order for a Siwertell ship loader type-1A from Libyan Fertilizer Company... Read more

ECOsubsea invests in Singapore with NOK 35m from Innovation Norway

It is a climate and environmental problem that ship hulls are not cleaned often and gently. After being... Read more

ECOsubsea invests in Singapore with NOK 35m from Innovation Norway

It is a climate and environmental problem that ship hulls are not cleaned often and gently. After being... Read more

Berge Neblina sets sail with four carbon-saving rotor sails

Berge Bulk has announced the successful installation of four emissions-reducing rotor sails on Berge... Read more

Wärtsilä simulators to support Singapore's Wavelink Maritime Institute

Technology group Wärtsilä has supplied its new dual-fuel engine simulator technology for Wavelink... Read more

Oulu extends cargo handling with Konecranes Gottwald

The Finnish Port of Oulu has ordered a Konecranes Gottwald ESP.7 Portal Harbor Crane to improve cargo... Read more

Intergis adds flexibility in South Korea with Konecranes Gottwald Gen 6 MHC

Intergis Co., Ltd ordered a Konecranes Gottwald ESP.5 Mobile Harbour Crane to improve its bulk and general... Read more

Live freight rate visibility across routes and maturities

AXSMarine, a pioneer and market leader in the provision of advanced solutions and market intelligence... Read more