In recent years a new refrigerant, R422D, has been introduced as substitute of R22 for refrigeration systems. This new fluid is an easy-to-use, non-ozone-depleting HFC refrigerant and, differently from its predecessor (R407C), it is compatible with mineral oil. However, R422D has a very high...

In this paper, the energy performance of a walk-in cooler working with R22 and its substitute R422D are experimentally studied. The experimental investigation was carried out considering three different operating conditions; in particular, the AHRI standard has been used as reference for...

Column grand composite curves and the exergy loss profiles produced by the Column-Targeting Tool of the Aspen Plus simulator are used to assess the performance of the existing distillation columns, and reduce the costs of operation by appropriate retrofits in a biodiesel production plant....

To reduce the risk of disruption of lifeline systems during the emergency following an earthquake (or any other disaster) preventive interventions on the existing concerned facilities are necessary, but often hindered by the limitation of the available economic resources. In this paper,...

To reduce the risk of disruption of lifeline systems during the emergency following an earthquake (or any other disaster) preventive interventions on the existing concerned facilities are necessary, but often hindered by the limitation of the available economic resources. In this paper,...