A Subsea Cooler is an energy-efficient alternative for Air-Cooled Coolers in offshore applications because they use seawater as a coolant. The natural convection of seawater is used as a driving force; no mechanical power is required to drive the air around the finned tubes, as is the case with typical Air-Cooled Coolers.
This eliminates power costs and contributes to a more energy-efficient operation of the platform.
In addition - since the coolers are subsea - no space is required on the platform, resulting in smaller and economically more attractive platforms.
On offshore platforms both seawater and ambient air are almost unlimited sources for absorbing the heat surplus generated by the processes on the platform.
Air-Cooled Coolers or Condensers are required to dispatch waste heat to the ambient air. Although this seems a sound way for cooling, the equipment requires quite a bit of plot space, which is expensive on platforms. In addition, the cooling fans require energy, maintenance and spare parts.
Cooling with seawater requires (much) less lot space than cooling with air. Seawater can be pumped to the cooler but has the drawback that the pump requires a lot of maintenance. Seawater is corrosive and requires special materials. It also causes biological pollution.
Our Subsea Coolers do not require plot space and do not use pumps. The seawater around the cooler is heated, creating a natural draft in the sea as an engine for cooling. In addition, we have extensive experience with a corrosion prevention system.
Surplus heat on offshore platforms can be transferred to ambient air or seawater. If the plot area is limited on a platform, the transfer to seawater remains a solution.
If the platform is unmanned - and regular maintenance is not an option - Subsea Coolers are the preferred solution. They are virtually maintenance-free, use seawater for cooling and do not take up space on the platform.
By installing a Subsea cooler instead of a conventional Air-Cooled Cooler or Shell & Tube Heat Exchanger, you will save 100% of the original required platform space. The Subsea Cooler is installed subsea and therefore does not require any platform space. Subsea Coolers also have the advantage of not requiring driving power and hardly any maintenance.
Undersea cooling is unfortunately not protected against biological pollution. The rate of biological pollution is highly dependent on the location of the platform - around the equator, or near the poles, or somewhere in between - the depth of the sea and the level of the cooler. This means that a specific solution must be devised for each project, which requires close cooperation between our customer experts and our specialists. Pre-engineering is necessary before a sound and solid design can be presented. However, keep in mind that any maintenance interval for a Subsea Cooler will be significantly longer than the maintenance interval for a seawater pump.
There are several strong advantages to choosing Subsea Cooling as the best solution for offshore cooling. Whatever your question may be about Subsea Cooling, our answer will always be an advice that prepares you for the future. This advice may include new systems, other installations, maintenance to keep an installation in good working condition or by fixing what is broken. We optimize existing processes and develop innovative products. This allows us to offer the most efficient and advantageous solutions, guaranteeing sustainability and energy efficiency.
We extensively calculated and simulated the effect of tidal movement underwater and natural current of heated water to design customized Subsea Coolers.
This results in several benefits for your overall project:
Solving customer problems with innovative, proven technical solutions.
How we came up with a spot saving and maintenance free solution.
We helped Petroleos Mexicanos with the right cooling solution for the Litoral-A project.
Get to know our product range of Air-Cooled Coolers and the services we offer.
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