1,720,998 research outputs found
A simulation environment for dry-expansion evaporators with application to the design of autotuning control algorithms for electronic expansion valves
No full textIn this paper some results of a research project aimed at deriving high-performance, adaptive control algorithms for electronic expansion valves (EEVs) to be used in finned-coiled, dry-expansion evaporators for refrigeration systems are reported. With the aim of developing a software environment that can be used for controller design, rapid prototyping, optimization of data collection and test design, virtual prototyping approach to design was adopted. The development of a distributed dynamic simulation model of the evaporator coupled with an electronic expansion valve, and its use for deriving autotuning PID control algorithms is described. Experimental results confirm the effectiveness of this kind of approach
Valutazione sperimentale di un sistema innovativo di controllo di zona per il riscaldamento degli edifici
No full text
Un modello dinamico per la simulazione termoigrometrica degli edifici in ambiente matlab
No full textAnalisi teorica e sperimentale del moto adibatico nella laminazione di anidride carbonica in tubi capillari
No full textAdvanced control systems for single compressor chiller units
No full textn this paper the problem of designing advanced control systems for increasing the performances of low capacity HVAC system with single scroll compressor is addressed. In particular, a simulation environment based on Matlab/Simulink that has been validated on a state-of-the-art experimental facility and used to design an adaptive controller for single scroll compressor, packaged air-cooled water chillers is presented. The capability of the controller to substantially increase the energy performance of the system, as well as to achieve excellent regulation performances in process applications is demonstrated
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