Addresses chiller applications that are designed to get the maximum benefits from a chiller plant every day of the year. It treats all chillers as variable-capacity devices and applies them in thermal storage system configurations that efficiently take advantage of that capability. It also recognises that a chiller operating temperature differential is always a variable to which a chiller must always adjust. All the applications addressed vary the flow and in some situations the operating temperature differential to maximise or optimise each chiller's capacity. it is done in such a manner that the safety and reliability of the chiller are improved rather than jeopardised.

KEYWORDS: year 1996, energy storage, chillers, temperature difference, optimisation, controls, variable speed motors