BUSWELL, R.A. and KELSO, R.M., 2005. Uncertainty in the performance validation of HVAC Systems. IN: Proceedings of CLIMA, Lausanne, Switzerland, Paper 178, 6pp.
A first principles based model approach to AHU cooling coil performance
validation is presented. The model of correct operation is compared to that
observed in the real system. In the scheme, uncertainty in the measurements and
the models is evaluated to generate robust thresholds for decision making. The
approach describes the design intent by estimating certain model parameters from
design data and expert knowledge. The method systematically incorporates the
uncertainty in these parameter estimates in the calculation of the system validation
threshold. This yields a definite, transparent indication of system performance to
a stated level of confidence. The approach is demonstrated on a cooling coil
subsystem installed in an air-handling unit serving zones in a real building.