0000000000093963
AUTHOR
Giuseppe Panno
showing 32 related works from this author
Exergy Recovery during LNG Regasification: Electric Energy Production - Part Two
2009
In liquefied natural gas (LNG) regasification facilities, for exergy recovery during regasification, an option could be the production of electric energy recovering the energy available as cold. In a previous paper, the authors propose an innovative process which uses a cryogenic stream of LNG during regasification as a cold source in an improved combined heat and power (CHP) plant. Considering the LNG regasification projects in progress all over the World, an appropriate design option could be based on a modular unit having a mean regasification capacity of 2 × 109 standard cubic meters/year. This paper deals with the results of feasibility studies, developed by the authors at DREAM in the…
THE RELATIONSHIP BETWEEN DIFFUSE AND TOTAL SOLAR RADIATION IN COMPUTER SIMULATION OF SOLAR ENERGY SYSTEMS
1978
ABSTRACT The diffuse to total radiation correlation developed by Liu and Jordan [1] was tested for three Italian locations. An acceptable agreement was found between the regression lines in [1] and the ones found for two of the three locations. Using measured hourly values of total solar radiation on a horizontal surface, the corresponding hourly values of total solar radiation on an inclined surface at 45° facing south were computed with both the Liu and Jordan and the Loudon [6] method for estimating the diffuse radiation. Results show that approximately the same degree of accuracy in the prediction is achievable with both methods and that the difference between the measured total monthly…
LNG cold energy use in agro-food industry: A case study in Sicily
2011
Abstract It is known how the complete gasification of liquefied natural gas (LNG) can return about 230 kWh/t of energy. Nevertheless out of fifty-one gasification plants in the world, only thirty-one of them are equipped with systems for the partial recovery of the available energy. At the moment most of these plants mainly produce electric energy; however the employment of the cold energy results very interesting, in fact, it can be recovered for agro-food transformation and conservation as well as for some loops in the cold chain. Cold energy at low temperatures requires high amounts of mechanical energy and it unavoidably increases as the required temperature diminishes. Cold energy reco…
RESEARCH AND DEVELOPMENT ON HEAT PUMPS AT DEAF, PALERMO UNIVERSITY, ITALY
1993
Exergy recovery in regasification facilities – Cold utilization: A modular unit
2009
Abstract The paper deals with the problem of cold recovery for direct utilization both in the site of regasification facility and far from it. A modular LNG regasification unit is proposed having the regasification capacity of 2 billion standard cubic meters/year of gas. The modular plant is based on use of a power cycle working with ethane or ethylene which allows operation of cold energy transfer, contained in LNG to be regasified, in a range of temperatures suitable for multipurpose use of cold, reducing regasification process irreversibility. Some electric energy is produced by the power cycle, but the own mission of modular unit proposed is addressed to deliver cold suitable for indust…
On-site Experimental Study of HCFC-22 Substitution with HFCs Refrigerants
2012
Abstract The European Regulation no 2037/2000 has banned manufacturing HCFC refrigerants from January 1st 2010, although its use is allowed up to 2015 if the fluids come from a recycling process. This situation creates the need for developing new working fluids to replace the HCFC in the refrigeration plants now in operation. Among all the HCFCs the R22 is the most widely used in a wide range of applications, especially in air conditioning. This paper presents the results of an experimental analysis comparing the performance of a vapour compression refrigerating unit operating with R22, and its performance in comparison to some HFCs fluids, substituting the former. In particular, the plant …
Experimental performance evaluation of a vapour compression refrigerating plant when replacing R22 with alternative refrigerants
2011
Abstract This paper presents the results of an experimental analysis comparing the performance of a vapour compression refrigerating unit operating with R22, and its performance in comparison to a new HFC fluid, substituting the former according to Regulation No 2037/2000. In particular, the plant working efficiency was first tested with R22 and then with three new HFC fluids: R417A, R422A and R422D. The investigation verified that despite the case of substitution and the advantage of being able to continue to use mineral oil as a lubricant in the compressor, the performance with the new tested fluids did not result as efficient as when using R22.
Characterization of Sicilian Olive Genotypes by Multivariate Analysis of Leaf and Fruit Chemical and Morphological Properties
2013
Leaf and fruit size and shape were measured and mannitol, glucose, sucrose and malic acid were quantified in leaf, bark and fruit of 25 Sicilian olive genotypes. Multivariate analysis was used to individuate groups with similar chemical composition and morphological traits suggesting potential for stress tolerance and/or oil yield and quality. Mannitol content varied greatly among genotypes and was the most abundant carbohydrate in leaf and bark, whereas glucose was the most abundant in fruit. Sucrose and malic acid were generally low indicating a marginal role in olive tissues. Mannitol and glucose were directly related in both leaf and fruit tissues. Genotypes also differed for carbohydra…
Exergy recovery during LNG regasification: Electric energy production – Part one
2009
Abstract In liquefied natural gas (LNG) regasification facilities, for exergy recovery during regasification, an option could be the production of electric energy recovering the energy available as cold. In a previous paper, the authors propose an innovative process which uses a cryogenic stream of LNG during regasification as a cold source in an improved combined heat and power (CHP) plant. Considering the LNG regasification projects in progress all over the World, an appropriate design option could be based on a modular unit having a mean regasification capacity of 2 × 109 standard cubic meters/year. This paper deals with the results of feasibility studies, developed by the authors at DRE…
Recupero del freddo nella rigassificazione del GNL: produzione di energia elettrica
2007
Caso studio - Risparmio energetico nella rigassificazione del GNL
2006
Energetic recovery from regasification plants for desalination processe and cold chain applications
2007
Recupero e utilizzazione del freddo nella rigassificazione del GNL
2008
Celle a combustibile per applicazioni stazionarie cogenerative
2008
Studio di fattibilità di un impianto di climatizzazione con accumulo di caldo e freddo con ghiaccio per un grosso ipermercato ubicato in Sicilia
2005
Aspetti energetici della catena del freddo
2005
CHP plants for production of electrical energy during regasification of LNG recovering exergy of cold.
2006
The tranport of natural gas by pipeline from gas fiel tothe town or industrial sites in most case is impossible, so there is need to transport LNG by ship. At the terminal of arrival a regasification process of LNG, which is liquefied near well-head, returns it back to gas state before its transport in the pipelinenetwork. This paper deals with the results of feasibility studies on ventures based on an appropriate thermo-economic analysis of improved cycles (CHP Cycles: the top Cycle is a convevtional Gas Turbine open Cycle fed by natural gas and the bottom Cycle is an improved Gas Turbine closed cycle working with Helium or Nitrogen gas). The analysis shows the convenience and the profitab…
Esperimenti sulle prestazioni di fluidi sostitutivi dell’R22 negli impianti frigoriferi
2008
Schema del Piano Energetico Regionale della Regione Siciliana, Rapporto di Sintesi
2007
Caso studio - Determinazione del quadro complessivo relativo alla utilizzazione del Gas Naturale nel territorio della Regione Siciliana
2006
Ricerca sul risparmio energetico nella rigassificazione del GNL – Impianti CHP con ciclo di Botton ad elio o ad azoto. Innovazione tecnologica di imp…
2006
Determinazione del quadro complessivo relativo alla utilizzazione del Gas Naturale nel territorio della Regione Siciliana. Relazione di sintesi
2005
Caso Studio relativo ad un ipermercato ubicato in Sicilia, opportunità di risparmio energetico, studi di fattibilità
2006
Energy saving analysis in industrial processes by heat pump systems with ammonia as refrigerant: the case of a cheese factory
2005
In the last few years, the consumption of energy has been the heart of many papers about future developments of refrigerating engines. The studies regard especially refrigerating systems used in industrial fields, where their operation can cause direct and indirect effects on our environment. In order to set a limit to the harms induced by the use of synthetic refrigerants and in order to follow up energy saving, it is very important to investigate new solutions. This paper reports a feasibility study on the plants of a cheese factory by means of addition of an heat pump with ammonia as refrigerant in order to recover the termic reject of two refrigerating units and to supply the required h…