The utilisation of electronic control systems in thermal plants is now well established. The attention of producers and designers is constantly addressed to the setting-up of regulation schemes always more refined and complex. However, this evolution has not been followed by a corresponding evolution of the design criteria. For example, to predict the behaviour of a plant, even if simple but constrained to sophisticated regulation schemes, the opportunities given by the traditional design criteria, consisting on the analysis of a finite, and often limited, number of steady situations, are no more adequate but it is necessary to study the plant as a dynamic system. In the present paper a computer code is used to analyse a typical thermal plant under a periodic variation of the external temperature. Furthermore, the interactions between the control system and the over-sizing of the components of the thermal plant are analysed. It is shown how a proper design of the control system can be useful to operate the thermal plant efficiently, reduce the energy consumption and keep the people comfortable.
Regulation systems and component over-sizing in thermal plant
MORINI, Gian Luca;PIVA, Stefano
2001
Abstract
The utilisation of electronic control systems in thermal plants is now well established. The attention of producers and designers is constantly addressed to the setting-up of regulation schemes always more refined and complex. However, this evolution has not been followed by a corresponding evolution of the design criteria. For example, to predict the behaviour of a plant, even if simple but constrained to sophisticated regulation schemes, the opportunities given by the traditional design criteria, consisting on the analysis of a finite, and often limited, number of steady situations, are no more adequate but it is necessary to study the plant as a dynamic system. In the present paper a computer code is used to analyse a typical thermal plant under a periodic variation of the external temperature. Furthermore, the interactions between the control system and the over-sizing of the components of the thermal plant are analysed. It is shown how a proper design of the control system can be useful to operate the thermal plant efficiently, reduce the energy consumption and keep the people comfortable.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
