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Name two (2) methods of responding to a load reduction in a hot water heating system?

Name two (2) methods of responding to a load reduction in a hot water heating system?

Engineering   Civil-Engineering   
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Answer #1

(1).RIPPLE CONTROL METHOD: Ripple control involves superimposing a higher frequency signal (usually between 100 and 1600Hz) onto the standard 50-60Hz of the main power signal. When receiver devices attached to non essential residental or industrial loads receive this signal ,they shut down the load until the signal is disabled or another frequency is received.

(2).FREQUENCY BASED CENTRALIZED DEMAND CONTROL : Greater loads physically slow the rotors of a grids synchronized generators.This causes AC mains to have slightly reduced frequency when the grid is heavily loaded.The reduced frequency is immediately sensible across the entire grid.

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