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Monday, April 16, 2012

Intelligent Control

Not much happening lately due to a couple things. First, I started a new job, which makes the admiral happy, and I am kind of excited about the work (haven't been excited about work in a while). Second, waiting on parts. The decision to go 24 volts means special ordering a number of items. Now, my supplier can get these parts in a couple days, IF I want to pay an extra premium. Otherwise, the order is placed with the supplier's regular stock order, which means it could take a week to three months depending on the vendor.

These pumps took about a month to finally arrive. These are the 24 volt freshwater and raw water pressure pumps. Made by Whale, the freshwater pump (yellow one in the picture) claims new innovative "Intelligent Control" technology for maintaining pressure and flow at the water taps.

In traditional pressurized water systems, in order to keep constant pressure and flow at the faucets when more than one are open (example the galley sink and the head shower), an accumulator tank (sometimes called a pressure tank) is installed in the system to help "bank" the pressure reducing pump cycling and water flow "surging". The larger the tank, the smoother and consistent the flow. On a boat, this tank can take up a lot of space.
Left: freshwater pump. Right: raw water pump.

Enter Whale's Intelligent Control pressure pump. Through some fancy electronic monitoring of the flow, the variable speed pump will adjust to maintain a consistent flow, without the need of a pressure tank. I have seen Whale's demo display at the trade shows and it looks to be the real deal. At 3.5 gallons per minute, Whale claims it can maintain a consistent 5 psi and flow for up to four water taps. Made in Belfast, Ireland of all places.

The layout design of the pump mechanical space has been waiting on these pumps, which can now proceed.
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