Abstract: A heating system comprises a source of rotational motion, at least one pump, a primary heat storage system, and one or more loops of piping connected to the primary heat storage system. The source of rotational motion, which may be a wind turbine, is configured to drive the at least one pump. The at least one pump is configured to pump liquid to repeatedly circulate around the one or more loops of piping, resulting in frictional heating of the pumped liquid and transfer of heat to the primary heat storage system. The system may comprise a secondary heat storage system, the pump may have an efficiency of less than 20%, the wind turbine may have drag-style blades, and/or the system may comprise a flow valve to regulate a flow rate of the pumped liquid.

Abstract: Embodiments described herein relate to a battery bank and techniques for managing batteries of the battery bank. For example, the battery bank may include at least a primary battery and a secondary battery. In various embodiments, processor(s) of a primary battery management system (BMS) of the primary battery may monitor battery diagnostic information for the battery bank, receive an indication to charge the battery bank from a central controller that is communicatively coupled to the battery bank, select a given battery to be charged from among at least the primary battery and the secondary battery, and cause the given battery to be charged. In various embodiments, the primary BMS may be internal to the primary battery. In various embodiments, the secondary battery may include a corresponding secondary BMS to communicate with the primary BMS to enable the processor(s) of the primary BMS to monitor the battery diagnostic information.