Time division multiplex of discrete air-conditioning units

Abstract

In Hong Kong, air-conditioning (a/c) is a major energy end-user in building services. Nowadays, operation modes of various a/c are uncoordinated. Hence, the diversity of this major energy usage is coarse and uncontrolled. The project shall utilize Time-Division-Multiplex (TDM) concept to regulate this. Through research effort, a better diversity of energy utilization in premises will be achieved. The peak demand of current, the sum of steady load currents and the cable heat loss will then be reduced. The cable capacity will be better utilized, and the potential of reserve in buildings will then be significantly enhanced. Beyond this study, the TDM concept can be extended to other appliances, for example, kitchen appliances and storage-type water heater. It is also envisaged that the project becomes an integral part to smart metering communication management. This shall call for a new culture to regulate the load demand pattern with a better diversity in premises.