Tankless water heating on cruise ships


Tankless water heaters are water heaters designed to heat water on the fly. Rather than burning a whole tank of water which consumes large amounts of energy that is wasted if the water is not used (and it also takes time to heat the water up), the tankless water heater is designed to provide hot water on demand.
The tankless water heaters have significant benefits in any cruise ship or even a smaller vessel where energy efficiency is of great importance. Most tank-based water heaters heat up the water when the boat is docked as opposed to while the ship is sailing unless you have a generator on board, and they are irksome to use and inefficient compared to tankless designs. See Top Brands here:

A conventional water heating method on ships is to use the water which cools the engine to heat the water used by the occupants of the vessel via a heat exchanger. This means the? Wasted’ heat energy from the generator is instead used for a purpose, making the system much more efficient and cheaper to run as a result. This does require the engine be running, but in a cruise ship, this does not present a problem as the engine is often always running while the ship is cruising.

Early tankless water heaters used gas, and some models still use gas, especially on some smaller vessels. The gas models require the installation of a carbon monoxide detector however for safety. However, the gas models are often reserved for smaller private vessels; cruise ships will typically use the waste heat from the engine to heat the water or electric heaters, or a combination of both.

The electric designs can be used on ships of all sizes, but are usually used on medium to large cruise ships. One such heater is the Hubbell MTX.

This is one of the best electric tankless marine water heaters on the market and can come in varying sizes depending on the size of the ship. Their products are also ABS approved reducing ship inspection times.

With power output varying from 5 to 54 kW, this model can be used on both small and large ships alike, and the model can be chosen based on the size of the vessel. Cruise ships often use heat from the engine, but while the ship is in port and the engine is not running, heaters like these can pick up the slack. For smaller vessels provided there is enough power available they can be safer than gas but would require a large battery bank, a half decent generator or AC power to be usable.

For cruise ships, both waste engine heat and electric heaters like the Hubbell MTX are the best options and the two solutions most often deployed on cruise ships.

You can find tankless water heater reviews in various places online. We would recommend the Hubbell model for a medium to a large vessel, or other manufacturers such as Eemax. For smaller ships, we would recommend a gas option unless you have the power available in your ships’ electrical system, such as those made by Bosch or Noritz.

It seems like tank-based heaters have gone the way of the dinosaur, not just in ships but even in many domestic settings around the world, due to the inefficiency, in light of the drawbacks of tank-based heaters and based on the above information on tankless heaters, we would always recommend tankless heating over tank-based heating.

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