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Science and Engineering Research Council research reports

The practical difficulties associated with the design and commissioning of HVAC controls were first identified by discussion with consulting engineers, controls manufacturers, research engineers, building services engineers, and by the experimental testing of several well-known, modelbased self-tuning control algorithms on a pilot-scale airconditioning plant. The problems associated with the control of air and water temperatures in both the cooling and heating coils, and with the supply air temperature and relative humidity control loops, were investigated experimentally. Special jacketing software has been developed for a version of the Generalised Predictive Control algorithm which uses default values for most of its parameters. The jacketing consists of a set of expert rules that supervise the operation of the on-line parameter estimator and the calculation of