1,721,173 research outputs found
Micro combined heat and power system transient operation in a residential user microgrid
No full textThis paper presents an analysis of the transient operation of a micro combined heat and power (CHP) system, equipped with both thermal and electric storage units and connected with both electric and district heating grids. Analysis is carried out by means of a simulation model developed by the authors for reproducing the transient behavior of micro-CHP systems operating within a microgrid. The prime mover considered in this paper is an internal combustion reciprocating engine. A residential user, characterized by electric and thermal energy demand during one representative summer day, is analyzed by using literature data. The transient response of each component is evaluated separately to quantify the relative deviation (RD) between the user-demand and micro-CHP system transient response. Therefore, this paper provides a measure of the RD over 1 day in terms of the energy required by the user versus the energy provided to the user itself
Correzioni. Esercizi di riprogettazione delle scuole
No full textDispositivi di progetto per il rinnovamento dell’edilizia scolastica esistente. Scuole ordinarie di una città media esemplificano condizioni e potenzialità di trasformazione del patrimonio scolastico italiano: costruite negli ultimi cinquant’anni con struttura a telaio in cemento armato, rispecchiano la diffusione nel Paese di costruzioni generiche disponibili a manipolazioni; appartenenti al patrimonio comunale, evidenziano la dotazione pubblica di edifici dal potenziale ruolo urbano; carenti dal punto di vista delle dimensioni, della sicurezza, della sostenibilità e delle funzioni, riflettono le domande attuali di efficientamento e innovazione; sregolate, alterate, obsolete nella concezione e nell’articolazione, offrono negli errori dell’architettura lo spazio per invenzioni progettuali. Mentre il dibattito sull’edilizia scolastica è principalmente incentrato sugli aspetti prestazionali, uno sguardo centrato sul progetto interpreta la correzione non come eliminazione dell’errore, ma come liberazione delle sue potenzialità creative. Il quaderno presenta, tramite esercizi di riprogettazione, dispositivi di reinvenzione dello spazio della scuola. Condotti come correzioni di progetti ancora aperti, gli esercizi lavorano su aggiustamenti distributivi, compositivi o funzionali degli edifici, ma soprattutto sulla rivelazione di possibilità spaziali. Presentati in sequenza e raccolti in collezioni, compongono un catalogo di azioni ed esempi progettuali
Micro-CHP System Transient Operation in a Residential User Microgrid
No full textThis paper presents an analysis of the transient operation of a micro-CHP system, equipped with both thermal and electric storage units and connected with both electric and district heating grid. The results are obtained by means of a simulation model previously developed by the authors for reproducing the transient behavior of micro-CHP systems operating within a micro-grid. The prime mover considered in this paper is an internal combustion reciprocating engine. A residential user, characterized by electric and thermal energy demand over one day, is analyzed by using literature data.
The transient response of each component is evaluated separately to quantify the relative deviation between user demand and micro-CHP system transient response. Therefore, this paper provides a measure of the relative deviation over one day in terms of energy required by the user vs. energy provided to the user itself.This paper presents an analysis of the transient operation of a micro-CHP system, equipped with both thermal and electric storage units and connected with both electric and district heating grid. The results are obtained by means of a simulation model previously developed by the authors for reproducing the transient behavior of micro-CHP systems operating within a micro-grid. The prime mover considered in this paper is an internal combustion reciprocating engine. A residential user, characterized by electric and thermal energy demand over one day, is analyzed by using literature data. The transient response of each component is evaluated separately to quantify the relative deviation between user demand and micro-CHP system transient response. Therefore, this paper provides a measure of the relative deviation over one day in terms of energy required by the user vs. energy provided to the user itself
DE VIVO B., GIUNTA G., IPPOLITO F., LIMA A., ORSI G., PERRONE V. & ZUPPETTA A. (1979) — Regional geochemical reconnaissance on alluvium deposits in Southern Sudan.
No full text
Mineralizzazioni metallifere italiane ed elementi di prospezione
No full textLiguori Editore, Napoli. ISBN 88-207-1317-
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