Documents disponibles écrits par cet auteur

Accurate adsorption isotherms of R134a onto activated carbons for cooling and freezing applications / Bidyut Baran Saha in International journal of refrigeration, Vol. 35 N° 3 (Mai 2012) 

Public ISBD [article]  in International journal of refrigeration > Vol. 35 N° 3 (Mai 2012) . - pp. 499–505 Titre : Accurate adsorption isotherms of R134a onto activated carbons for cooling and freezing applications Titre original : Isothermes d'adsorption précises pour le R134a sur du charbon actif dans les applications de refroidissement et de congélation Type de document : texte imprimé Auteurs : Bidyut Baran Saha, Auteur ; Ibrahim I. El-Sharkawy, Auteur ; Roger Thorpe, Auteur Année de publication : 2012 Article en page(s) : pp. 499–505 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Activated  carbon  Adsorption  isotherm  Cooling  R134a Résumé : The objective of this article is to improve the performance of thermally powered adsorption/cooling systems by selecting a new adsorbent/refrigerant pair. Adsorption equilibrium data of R134a onto granular activated carbon (AC) and Unitika activated carbon fiber (ACF) of type (A-20) have been measured experimentally using Rubotherm ISOSORP 2000 within evaporation temperatures range between −20 and 40 °C and adsorption temperatures range from 30 to 80 °C. Experimental data have been correlated using various popular isotherm models. The isosteric heat of adsorption of the assorted adsorbent/refrigerant pairs has also been extracted from the present experimental data. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711001083 [article] Accurate adsorption isotherms of R134a onto activated carbons for cooling and freezing applications = Isothermes d'adsorption précises pour le R134a sur du charbon actif dans les applications de refroidissement et de congélation [texte imprimé] / Bidyut Baran Saha, Auteur ; Ibrahim I. El-Sharkawy, Auteur ; Roger Thorpe, Auteur . - 2012 . - pp. 499–505. Génie mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 35 N° 3 (Mai 2012) . - pp. 499–505 Mots-clés : Activated  carbon  Adsorption  isotherm  Cooling  R134a Résumé : The objective of this article is to improve the performance of thermally powered adsorption/cooling systems by selecting a new adsorbent/refrigerant pair. Adsorption equilibrium data of R134a onto granular activated carbon (AC) and Unitika activated carbon fiber (ACF) of type (A-20) have been measured experimentally using Rubotherm ISOSORP 2000 within evaporation temperatures range between −20 and 40 °C and adsorption temperatures range from 30 to 80 °C. Experimental data have been correlated using various popular isotherm models. The isosteric heat of adsorption of the assorted adsorbent/refrigerant pairs has also been extracted from the present experimental data. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711001083

Performance evaluation of combined adsorption refrigeration cycles / Khairul Habib 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. 129-137 Titre : Performance evaluation of combined adsorption refrigeration cycles Titre original : Evaluation de la performance des cycles frigorifiques combinés à adsorption Type de document : texte imprimé Auteurs : Khairul Habib, Auteur ; Bidyut Baran Saha, Auteur ; Anutosh Chakraborty, Auteur Année de publication : 2011 Article en page(s) : pp. 129-137 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Adsorption  Cooling  R134a  R507  Activated  carbon-cycle Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This paper presents the results of an investigation on the performance of combined adsorption refrigeration cycles. The novel combined cycle amalgamates the activated carbon (AC)-R507A as the bottoming cycle and AC-R134a cycle as the topping cycle and deliver refrigeration load at as low as −10 °C at the bottoming cycle. The cycle simulation is based on the experimentally confirmed adsorption isotherms, kinetics and isosteric heat of adsorption data for R134a and R507A on highly porous based activated carbon of type Maxsorb III. The optimum cooling capacity, coefficient of performance (COP) and chiller efficiency are calculated in terms of cycle time, switching time, regeneration and brine inlet temperatures. Results show that the combined adsorption cycles are feasible even when low-temperature heat source is available. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710002100 [article] Performance evaluation of combined adsorption refrigeration cycles = Evaluation de la performance des cycles frigorifiques combinés à adsorption [texte imprimé] / Khairul Habib, Auteur ; Bidyut Baran Saha, Auteur ; Anutosh Chakraborty, Auteur . - 2011 . - pp. 129-137. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 34 N° 1 (Janvier 2011) . - pp. 129-137 Mots-clés : Adsorption  Cooling  R134a  R507  Activated  carbon-cycle Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This paper presents the results of an investigation on the performance of combined adsorption refrigeration cycles. The novel combined cycle amalgamates the activated carbon (AC)-R507A as the bottoming cycle and AC-R134a cycle as the topping cycle and deliver refrigeration load at as low as −10 °C at the bottoming cycle. The cycle simulation is based on the experimentally confirmed adsorption isotherms, kinetics and isosteric heat of adsorption data for R134a and R507A on highly porous based activated carbon of type Maxsorb III. The optimum cooling capacity, coefficient of performance (COP) and chiller efficiency are calculated in terms of cycle time, switching time, regeneration and brine inlet temperatures. Results show that the combined adsorption cycles are feasible even when low-temperature heat source is available. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710002100

Study on a waste heat-driven adsorption cooling cum desalination cycle / Kim Choon Ng in International journal of refrigeration, Vol. 35 N° 3 (Mai 2012) 

Public ISBD [article]  in International journal of refrigeration > Vol. 35 N° 3 (Mai 2012) . - pp. 685–693 Titre : Study on a waste heat-driven adsorption cooling cum desalination cycle Titre original : Etude sur un cycle de refroidissement à adsorption utilisé également pour le dessalement, entraîné à l'aide de la récupération de chaleur Type de document : texte imprimé Auteurs : Kim Choon Ng, Auteur ; Kyaw Thu, Auteur ; Bidyut Baran Saha, Auteur Année de publication : 2012 Article en page(s) : pp. 685–693 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Adsorption  Cooling  Desalination  Waste  heat  Recovery Résumé : This article presents the performance analysis of a waste heat-driven adsorption cycle. With the implementation of adsorption–desorption phenomena, the cycle simultaneously produces cooling energy and high-grade potable water. A mathematical model is developed using isotherm characteristics of the adsorbent/adsorbate pair (silica gel and water), energy and mass balances for the each component of the cycle. The cycle is analyzed using key performance parameters namely (i) specific cooling power (SCP), (ii) specific daily water production (SDWP), (iii) the coefficient of performance (COP) and (iv) the overall conversion ratio (OCR). The numerical results of the adsorption cycle are validated using experimental data. The parametric analysis using different hot and chilled water temperatures are reported. At 85 °C hot water inlet temperature, the cycle generates 3.6 m3 of potable water and 23 Rton of cooling at the produced chilled water temperature of 10 °C. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711000211 [article] Study on a waste heat-driven adsorption cooling cum desalination cycle = Etude sur un cycle de refroidissement à adsorption utilisé également pour le dessalement, entraîné à l'aide de la récupération de chaleur [texte imprimé] / Kim Choon Ng, Auteur ; Kyaw Thu, Auteur ; Bidyut Baran Saha, Auteur . - 2012 . - pp. 685–693. Génie mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 35 N° 3 (Mai 2012) . - pp. 685–693 Mots-clés : Adsorption  Cooling  Desalination  Waste  heat  Recovery Résumé : This article presents the performance analysis of a waste heat-driven adsorption cycle. With the implementation of adsorption–desorption phenomena, the cycle simultaneously produces cooling energy and high-grade potable water. A mathematical model is developed using isotherm characteristics of the adsorbent/adsorbate pair (silica gel and water), energy and mass balances for the each component of the cycle. The cycle is analyzed using key performance parameters namely (i) specific cooling power (SCP), (ii) specific daily water production (SDWP), (iii) the coefficient of performance (COP) and (iv) the overall conversion ratio (OCR). The numerical results of the adsorption cycle are validated using experimental data. The parametric analysis using different hot and chilled water temperatures are reported. At 85 °C hot water inlet temperature, the cycle generates 3.6 m3 of potable water and 23 Rton of cooling at the produced chilled water temperature of 10 °C. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711000211

The performance analysis of a novel dual evaporator type three-bed adsorption chiller / Miyazaki, Toshimasa in International journal of refrigeration, Vol. 33 N° 2 (Mars 2010) 

Public ISBD [article]  in International journal of refrigeration > Vol. 33 N° 2 (Mars 2010) . - pp. 276-285 Titre : The performance analysis of a novel dual evaporator type three-bed adsorption chiller Titre original : Analyse de la performance de deux nouveaux évaporateurs pour un refroidisseur à adsorption à trois adsorbeurs Type de document : texte imprimé Auteurs : Miyazaki, Toshimasa, Auteur ; Atsushi Akisawa, Auteur ; Bidyut Baran Saha, Auteur Année de publication : 2011 Article en page(s) : pp. 276-285 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Air  conditioning  Adsorption  system  Calculation  Performance  Modelling  Simulation  Parameter  Geometry Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This paper deals with the performance evaluation of an innovative, waste heat driven dual evaporator type three-bed adsorption cycle for cooling application. The innovative adsorption chiller has two evaporators, three adsorbent beds, and a condenser, and the evaporators work at different pressure levels. The effects of hot water inlet temperature, chilled water inlet and outlet temperatures, and cycle time on the specific cooling capacity (SCC) and coefficient of performance (COP) were predicted by simulation. For the same operating condition, the SCC and COP of the dual evaporator type three-bed adsorption chiller were found to be 1.5 and 1.7 times higher than those of the two-bed single-stage adsorption chiller, respectively. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700709002394 [article] The performance analysis of a novel dual evaporator type three-bed adsorption chiller = Analyse de la performance de deux nouveaux évaporateurs pour un refroidisseur à adsorption à trois adsorbeurs [texte imprimé] / Miyazaki, Toshimasa, Auteur ; Atsushi Akisawa, Auteur ; Bidyut Baran Saha, Auteur . - 2011 . - pp. 276-285. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 33 N° 2 (Mars 2010) . - pp. 276-285 Mots-clés : Air  conditioning  Adsorption  system  Calculation  Performance  Modelling  Simulation  Parameter  Geometry Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This paper deals with the performance evaluation of an innovative, waste heat driven dual evaporator type three-bed adsorption cycle for cooling application. The innovative adsorption chiller has two evaporators, three adsorbent beds, and a condenser, and the evaporators work at different pressure levels. The effects of hot water inlet temperature, chilled water inlet and outlet temperatures, and cycle time on the specific cooling capacity (SCC) and coefficient of performance (COP) were predicted by simulation. For the same operating condition, the SCC and COP of the dual evaporator type three-bed adsorption chiller were found to be 1.5 and 1.7 times higher than those of the two-bed single-stage adsorption chiller, respectively. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700709002394