Documents disponibles écrits par cet auteur

Diagnostic initial d’un site pollué / José Fernández-Seara

Public ISBD in Techniques de l'ingénieur : environnement Ti800. Gestion des sites et sols pollués / Bonhommeau, Xavier  Titre : Diagnostic initial d’un site pollué : étude historique et documentaire: réf. internet G 2560 Type de document : texte imprimé Auteurs : José Fernández-Seara, Auteur ; Anne de Seguins Pazzis, Auteur Année de publication : 1999 Importance : p. 131-138 Note générale : Bibliogr. p. 138 Langues : Français (fre) Mots-clés : Site  pollué  --  Diagnostic  initial  --  Etude  historique Déchets  industriels Sources  d’information Note de contenu : Sommaire: 1. Définition et objectifs 2. Réalisation de l’étude historique et sources d’information 3. Cas concret : centre de stockage de déchets industriels 4. Personnel, matériel et coûts in Techniques de l'ingénieur : environnement Ti800. Gestion des sites et sols pollués / Bonhommeau, Xavier  Diagnostic initial d’un site pollué : étude historique et documentaire: réf. internet G 2560 [texte imprimé] / José Fernández-Seara, Auteur ; Anne de Seguins Pazzis, Auteur . - 1999 . - p. 131-138. Bibliogr. p. 138 Langues : Français (fre) Mots-clés : Site  pollué  --  Diagnostic  initial  --  Etude  historique Déchets  industriels Sources  d’information Note de contenu : Sommaire: 1. Définition et objectifs 2. Réalisation de l’étude historique et sources d’information 3. Cas concret : centre de stockage de déchets industriels 4. Personnel, matériel et coûts

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité
aucun exemplaire

Experimental analysis on pressure drop and heat transfer of a terminal fan-coil unit with ice slurry as cooling medium / José Fernández-Seara in International journal of refrigeration, Vol. 33 N° 6 (Septembre 2010) 

Public ISBD [article]  in International journal of refrigeration > Vol. 33 N° 6 (Septembre 2010) . - pp. 1095-1104 Titre : Experimental analysis on pressure drop and heat transfer of a terminal fan-coil unit with ice slurry as cooling medium Titre original : Analyse expérimentale de la chute de pression et du transfert de chaleur d'un ventilo-convecteur dans un système employant un coulis de glace pour le refroidissement Type de document : texte imprimé Auteurs : José Fernández-Seara, Auteur ; Rubén Diz, Auteur ; Francisco J. Uhía, Auteur Année de publication : 2010 Article en page(s) : pp. 1095-1104 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Air  conditioning  Experiment  Ice  slurry  Fan-coil  unit  Heat  transfer  Pressure  drop Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This paper is concerned with the experimental analysis of a standard terminal fan-coil unit with ice slurry as coolant. The ice slurry was produced from an ethylene glycol 10 wt% aqueous solution. The pressure drop measurements are presented as a function of volumetric flow rate, ice concentration and Reynolds number. The experimental friction factors are obtained and discussed. The fan-coil capacity was experimentally determined for chilled water and melting ice slurry with inlet ice fractions around 5, 10, 15 and 20 wt%, considering in each case three different fan rotation velocities. The fan-coil capacity is higher with melting ice slurry than with chilled water by factors between 3.7 and 4.9. The heat transfer analysis realizes that the air side thermal resistance controls the heat transfer process. Experimental results for the melt off rate of ice in the fan coil and the superheating at the fan-coil outlet are shown and discussed. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710000836 [article] Experimental analysis on pressure drop and heat transfer of a terminal fan-coil unit with ice slurry as cooling medium = Analyse expérimentale de la chute de pression et du transfert de chaleur d'un ventilo-convecteur dans un système employant un coulis de glace pour le refroidissement [texte imprimé] / José Fernández-Seara, Auteur ; Rubén Diz, Auteur ; Francisco J. Uhía, Auteur . - 2010 . - pp. 1095-1104. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 33 N° 6 (Septembre 2010) . - pp. 1095-1104 Mots-clés : Air  conditioning  Experiment  Ice  slurry  Fan-coil  unit  Heat  transfer  Pressure  drop Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This paper is concerned with the experimental analysis of a standard terminal fan-coil unit with ice slurry as coolant. The ice slurry was produced from an ethylene glycol 10 wt% aqueous solution. The pressure drop measurements are presented as a function of volumetric flow rate, ice concentration and Reynolds number. The experimental friction factors are obtained and discussed. The fan-coil capacity was experimentally determined for chilled water and melting ice slurry with inlet ice fractions around 5, 10, 15 and 20 wt%, considering in each case three different fan rotation velocities. The fan-coil capacity is higher with melting ice slurry than with chilled water by factors between 3.7 and 4.9. The heat transfer analysis realizes that the air side thermal resistance controls the heat transfer process. Experimental results for the melt off rate of ice in the fan coil and the superheating at the fan-coil outlet are shown and discussed. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710000836

Experimental evaluation of an ejector as liquid re-circulator in an overfeed NH3 system with a plate evaporator / J. Alberto Dopazo in International journal of refrigeration, Vol. 34 N° 7 (Novembre 2011) 

Public ISBD [article]  in International journal of refrigeration > Vol. 34 N° 7 (Novembre 2011) . - pp. 1676-1683 Titre : Experimental evaluation of an ejector as liquid re-circulator in an overfeed NH3 system with a plate evaporator Titre original : Evaluation expérimentale d'un éjecteur utilisé pour recirculer l'ammoniac liquide dans un système avec un évaporateur à plaques suralimenté Type de document : texte imprimé Auteurs : J. Alberto Dopazo, Auteur ; José Fernández-Seara, Auteur Année de publication : 2011 Article en page(s) : pp. 1676-1683 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Ejector  Evaporator  System  Overfeed  Ammonia Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This paper deals with the experimental performance evaluation of an ejector, linked to a manual expansion valve, working as a liquid re-circulator component in an overfeed NH3 plate evaporator. The evaporator was tested in a single stage system belonging to a cascade refrigeration system prototype. The evaporator is an ALFANOVA HP76 plate heat exchanger with 50 plates. A Phillips ejector with a 1/2″ diameter throat and 1.4 mm diameter nozzle was used. The recirculation rate was experimentally determined for different operating conditions. Experimental data are reported for volumetric flow rate at the manual expansion valve inlet from 0.8 to 1.6 l min−1, evaporating pressure from 0.14 to 0.22 MPa and condensing pressure from 0.85 to 1 MPa. The experimental result showed recirculation rates between 2 and 4. The evaporating capacity varied from 9.48 kW to 18.37 kW. In addition, another two nozzles were tested and the results are also presented and discussed. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710002987 [article] Experimental evaluation of an ejector as liquid re-circulator in an overfeed NH3 system with a plate evaporator = Evaluation expérimentale d'un éjecteur utilisé pour recirculer l'ammoniac liquide dans un système avec un évaporateur à plaques suralimenté [texte imprimé] / J. Alberto Dopazo, Auteur ; José Fernández-Seara, Auteur . - 2011 . - pp. 1676-1683. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 34 N° 7 (Novembre 2011) . - pp. 1676-1683 Mots-clés : Ejector  Evaporator  System  Overfeed  Ammonia Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This paper deals with the experimental performance evaluation of an ejector, linked to a manual expansion valve, working as a liquid re-circulator component in an overfeed NH3 plate evaporator. The evaporator was tested in a single stage system belonging to a cascade refrigeration system prototype. The evaporator is an ALFANOVA HP76 plate heat exchanger with 50 plates. A Phillips ejector with a 1/2″ diameter throat and 1.4 mm diameter nozzle was used. The recirculation rate was experimentally determined for different operating conditions. Experimental data are reported for volumetric flow rate at the manual expansion valve inlet from 0.8 to 1.6 l min−1, evaporating pressure from 0.14 to 0.22 MPa and condensing pressure from 0.85 to 1 MPa. The experimental result showed recirculation rates between 2 and 4. The evaporating capacity varied from 9.48 kW to 18.37 kW. In addition, another two nozzles were tested and the results are also presented and discussed. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710002987

Experimental evaluation of a cascade refrigeration system prototype with CO2 and NH3 for freezing process applications / J. Alberto Dopazo in International journal of refrigeration, Vol. 34 N° 1 (Janvier 2011) 

Public ISBD [article]  in International journal of refrigeration > Vol. 34 N° 1 (Janvier 2011) . - pp. 257-267 Titre : Experimental evaluation of a cascade refrigeration system prototype with CO2 and NH3 for freezing process applications Titre original : Evaluation expérimentale d'un système frigorifique au CO2/NH3 en cascade utilisé pour les applications congélation Type de document : texte imprimé Auteurs : J. Alberto Dopazo, Auteur ; José Fernández-Seara, Auteur Année de publication : 2011 Article en page(s) : pp. 257-267 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Refrigeration  system  Cascade  system  Carbon  dioxide  Ammonia-development  Prototype-experiment Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : A prototype of a cascade refrigeration system using NH3 and CO2 as refrigerants has been designed and built. The prototype is used to supply a 9 kW refrigeration capacity horizontal plate freezer at an evaporating temperature of −50 °C as design conditions. The prototype includes a specific control system and a data acq*uisition system. The experimental evaluation started with the real conditions within the design operating parameters. Subsequently, several tests were performed fixing four CO2 evaporating temperatures (−50, −45, −40 and −35 °C). At each one of the evaporating temperatures evaluated, the CO2 condensing temperature was varied from −17.5 to −7.5 °C and an experimental optimum value of CO2 condensing temperature was determined. The discussions on the experimental results include the influence of the operating parameters on the cascade system’s performance. In addition, the experimental results are compared with two common double stage refrigeration systems using NH3 as refrigerant. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710001568 [article] Experimental evaluation of a cascade refrigeration system prototype with CO2 and NH3 for freezing process applications = Evaluation expérimentale d'un système frigorifique au CO2/NH3 en cascade utilisé pour les applications congélation [texte imprimé] / J. Alberto Dopazo, Auteur ; José Fernández-Seara, Auteur . - 2011 . - pp. 257-267. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 34 N° 1 (Janvier 2011) . - pp. 257-267 Mots-clés : Refrigeration  system  Cascade  system  Carbon  dioxide  Ammonia-development  Prototype-experiment Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : A prototype of a cascade refrigeration system using NH3 and CO2 as refrigerants has been designed and built. The prototype is used to supply a 9 kW refrigeration capacity horizontal plate freezer at an evaporating temperature of −50 °C as design conditions. The prototype includes a specific control system and a data acq*uisition system. The experimental evaluation started with the real conditions within the design operating parameters. Subsequently, several tests were performed fixing four CO2 evaporating temperatures (−50, −45, −40 and −35 °C). At each one of the evaporating temperatures evaluated, the CO2 condensing temperature was varied from −17.5 to −7.5 °C and an experimental optimum value of CO2 condensing temperature was determined. The discussions on the experimental results include the influence of the operating parameters on the cascade system’s performance. In addition, the experimental results are compared with two common double stage refrigeration systems using NH3 as refrigerant. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710001568

Modelling and experimental validation of the hot-gas defrost process of an air-cooled evaporator / J. Alberto Dopazo in International journal of refrigeration, Vol. 33 N° 4 (Juin 2010) 

Public ISBD [article]  in International journal of refrigeration > Vol. 33 N° 4 (Juin 2010) . - pp. 829-839 Titre : Modelling and experimental validation of the hot-gas defrost process of an air-cooled evaporator Titre original : Modélisation et validation expérimentale du processus de dégivrage à l'aide de gaz chaud d'un évaporateur refroidi par air Type de document : texte imprimé Auteurs : J. Alberto Dopazo, Auteur ; José Fernández-Seara, Auteur ; Francisco J. Uhía, Auteur Année de publication : 2010 Article en page(s) : pp. 829-839 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Evaporator  Modelling  Simulation  Experiment  Process  Defrosting  Hot  gas Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : A detailed transient simulation model has been developed to predict and evaluate the performance of the hot-gas defrost process of an air-coil evaporator. In the model, the defrost process is subdivided into six stages: preheating, tube frost melting start, fin frost melting start, air presence, tube-fin water film and dry-heating. In each stage, the control volume is subdivided into systems represented by a single node, which has the representative properties of the system. A finite difference approach was used to solve the model equations. The results include the time required to defrost, the distribution of the energy during defrost process, the instantaneous refrigerant properties and the instantaneous fin and tube temperature distribution. The results are compared with experimental data obtained in a local storage facility under actual operating conditions and also using data available in the literature. The model results substantially agree with the experimental data in both cases. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710000083 [article] Modelling and experimental validation of the hot-gas defrost process of an air-cooled evaporator = Modélisation et validation expérimentale du processus de dégivrage à l'aide de gaz chaud d'un évaporateur refroidi par air [texte imprimé] / J. Alberto Dopazo, Auteur ; José Fernández-Seara, Auteur ; Francisco J. Uhía, Auteur . - 2010 . - pp. 829-839. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 33 N° 4 (Juin 2010) . - pp. 829-839 Mots-clés : Evaporator  Modelling  Simulation  Experiment  Process  Defrosting  Hot  gas Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : A detailed transient simulation model has been developed to predict and evaluate the performance of the hot-gas defrost process of an air-coil evaporator. In the model, the defrost process is subdivided into six stages: preheating, tube frost melting start, fin frost melting start, air presence, tube-fin water film and dry-heating. In each stage, the control volume is subdivided into systems represented by a single node, which has the representative properties of the system. A finite difference approach was used to solve the model equations. The results include the time required to defrost, the distribution of the energy during defrost process, the instantaneous refrigerant properties and the instantaneous fin and tube temperature distribution. The results are compared with experimental data obtained in a local storage facility under actual operating conditions and also using data available in the literature. The model results substantially agree with the experimental data in both cases. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710000083