where the price of the electric supply changes with time

Full Title

Control of fluid heaters > characterised by the purpose of the control > Reducing cost using the price of energy, e.g. choosing or switching between different energy sources > where the price of the electric supply changes with time

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

HEATING; RANGES; VENTILATING

Subclass:

FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL