Cooling

The cooling circuit is a closed loop that supplies a glycol/water (50% distilled water and 50%glycol) mix to:

• The motor drive box to remove heat from the drive electronics
• The brake manifold to remove heat from the brake hydraulic circuit
• The enclosure water jackets to remove heat from the flywheel bearings

The heated fluid then passes through a heat exchanger that has seawater on the cold side. The seawater pump output will operate for two minutes after the Seakeeper is turned on. During operation, the seawater pump output is turned on and off based on the temperature of the Seakeeper. The circuit also contains a coolant reservoir for coolant expansion and to make filling easy. The reservoir contains a 7 psi (0.5 bar) pressure cap.