Selection and control of HVAC systems for optimal life-cycle efficiency using simulation techniques

Design of air conditioning systems for efficient and effective part-load operation poses a considerable challenge, but one which is  frequently  not appreciated by the designer tied to traditional design practices. A plant simulation programme used in conjunction with a load calculation programme to assess rapidly the impact of equipment selection and control strategies on plant performance is described with the aid of an example. Use of the High Driving Potential (HDP) system provides the designer with the opportunity to implement a range of energy- saving strategies for optimising life-cycle plant operation. The outcomes are contrasted with those of the traditional energy wasteful strategies used to obtain acceptable part-load operation with conventional systems.