Fuel usage monitoring system uses oval gear meters
Recently Bell Flow Systems was tasked to supply a fuel consumption system on an ex Danish Navy patrol boat. Innovative marine engineers, NAVA. are currently re purposing The ‘Spirit of Samsø’ into a luxury yacht. They required a monitoring system installing, in order to measure the fuel consumption of the vessel.
As with a lot of fuel systems, the engine consisted of a supply and return to and from the fuel tank. As such, the system required two flow meters. One to measure the fuel supplying the engine, and one to also measure the fuel flow back to the tank. With all flow metering applications, selecting the correct size meter is crucial. This is to ensure accurate measurements. This is particularly relevant with fuel measurement.
Thanks to Bell Flow Systems’ expertise of fuel flow, the company took in to account the engine whilst at idle and also when at full capacity. It was also important to ensure that the meter did not reduce the pressure too much so as to starve the engine of fuel. With this is mind, the company was able to correctly calculate appropriate sized meters for the job.
For this installation, Bell Flow Systems used Macnaught MX series oval gear meters. Oval gear meters offer a high turndown ratio and a low pressure drop, making them ideal for fuel consumption applications. Their high resolution digital output and high accuracy also lends itself to being a first choice solution.
These are paired with a Fluidwell F116 differential flow computer. This meter gives visualisation of the fuel flow rate and total volume of both the flow and return to and from the engine. The computer also handles the flow calculations to clearly show both the current and total fuel consumption.
With this simple solution installed, fuel consumption monitoring is more efficient with the overarching aim that overall running costs for the vessel will be minimized.
By Jake Frith
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