We Build Rowing Tanks – Big Energy Efficient Rowing Tanks
We’re concerned about contributing to global warming. The carbon footprint of a powered tank is better than you might think. Unlike the big diesel-powered tanks at MIT and at Harvard that run on about 400 horsepower (comparable to an 18-wheeler trucking rig), we use sophisticated technology and 25 years of experience making efficient boats and tanks to make the cleanest, most efficient tanks we can. We make tanks that use from 60-240 horsepower. The average is about 120 horsepower, which is the same as a modern energy efficient hybrid car.
Not so bad really. Also, our tanks don’t run on diesel. They are all electric, so as the power grid gets cleaner and greener, so will the tanks.
In addition there is a more fundamental reason a powered tank won’t add greatly to your energy expenditure. It’s this bit of physics: Every watt that goes into your tank turns into heat.
So every watt that you use to run your tank is a watt you save on running your boiler or furnace! That energy is not wasted. That’s how entropy works. An electric motor in the rowing tank serves the same function as a furnace. The 120 hp motors are the equivalent to a 300,000 btu/hour furnace.
In the case of a rowing tank, the water (about 50 tons of it) acts as thermal mass to absorb this heat, so that after a number of crews use the tank, for hours, the water might be 2-4 degrees warmer than before.
This is no different from using a furnace to heat the tank room. If you are using the tank during heating season, every watt you use to run the tank is a watt you save on the building heating requirement.