Coriolano Salvini

Models for Simulation and Diagnosis of Energy Plant Components

This paper describes a methodology to set up models for simulation and diagnosis of energy plant components. The adopted approach consists in a simultaneous solution of modules representing plant components taking their actual behavior into account. Models are characterized by Reality Functions to adapt them to the reality of machines and apparatuses so that the New&Clean map of the real component can be established. Furthermore, to account for deterioration phenomena occurring during plant operations, Actuality Functions affecting component performance in terms of work and heat transfer, losses and effective flow functions have been introduced. Models have been validated and tested against real CHP plant data. Two applications to different kinds of power plants are presented and discussed. Results show a good capability to estimate component deterioration statuses and reproduce component actual behavior maps.Copyright

Steam Cycle Simulator for CHP Plants

This paper describes a methodology to set up steam cycle simulators for CHP plants. The adopted approach consists in a simultaneous solution of modules representing plant components taking their actual behavior into account. Models are characterized by Reality Functions to adapt them to the reality of machines and apparatuses so that the New&Clean map of the real component can be established. Furthermore, to account for deterioration phenomena occurring during plant operations, Actuality Functions affecting component performance in terms of work and heat transfer, losses and effective flow functions have been introduced. Models have been validated and tested against real CHP plant data. Applications to different kinds of CHP steam cycles are presented and discussed. Results show a good simulator capability to estimate component deterioration status and to reproduce the plant actual behavior.Copyright

Influence of Natural Primary Thermal-Source Temperatures on Power Consumption in Air-Conditioning Plants

This paper is focused on exploring the potential of connecting air-conditioning plants to primary thermal sources qualified by temperatures. Several connection layouts between plant components and thermal sources are investigated. Traditional systems including chillers and heat pumps, as well as systems based on chillers equipped with partial or total heat recovery devices are considered. The influence of primary thermal-source temperatures on overall design performance of such systems is deeply investigated and results focusing on power consumption and energy savings, as well as on reduction of CO2 emissions produced by the source of mechanical work, will be presented and widely discussed.Copyright