PRM

Continuous Power Optimisation

The Power Regulating Module ("PRM") has been specifically designed to control the power delivered to the artificial reefs. The PRM continually optimises power output to ensure the electrolytic process operates at peak efficiency at all times. This ensures that the strongest form of limestone rock is grown.

Supply and Demand

To extract calcium carbonate from seawater with electrolysis, the voltage applied between the anode and cathode must be at least 1.23 volts, but ideally below 5 volts. Low levels of power will just be wasted with no electrolysis taking place. While high levels of power lead to reduced efficiency with other chemical reactions taking preference. This could result in the formation of softer magnesium hydroxide based minerals (Brucite) over strong calcium carbonate based minerals (Aragonite) that form limestone rock.

Unfortunately, the power from most renewable sources is variable. For example, a solar panel’s output varies with the position of the sun and is usually strongest at mid-day. If this power is used directly to undertake electrolysis, then for much of the day it will either provide too much or too little energy. Similarly, energy from wind or waves will differ throughout the day. The PRM system takes power as an input, regardless of the source, and controls the distribution, matching supply with demand across multiple reefs to grow strong limestone rock at maximum rates at all times.