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Yogi D Goswami - One of the best experts on this subject based on the ideXlab platform.

  • theoretical analysis of a Water desalination system using low grade solar heat
    Journal of Solar Energy Engineering-transactions of The Asme, 2004
    Co-Authors: Sami Alkharabsheh, Yogi D Goswami
    Abstract:

    Theoretical analysis of a solar desalination system utilizing an innovative new concept, which uses low-grade solar heat, is presented. The system utilizes natural means of gravity and atmospheric pressure to create a vacuum, under which liquid can be evaporated at much lower temperatures and with less energy than conventional techniques. The uniqueness of the system is in the way natural forces are used to create vacuum conditions and its incorporation in a single system design where evaporation and condensation take place at appropriate locations without any energy input other than low grade heat. The system consists of solar heating system, an evaporator, a condenser, and injection, withdrawal, and discharge pipes. The effect of various operating conditions, namely, withdrawal rate, Depth of Water body, temperature of the heat source, and condenser temperature were studied. Numerical simulations show that the proposed system may have distillation efficiencies as high as 90% or more. Vacuum equivalent to 3.7 kPa (abs) or less can be created depending on the ambient temperature at which condensation will take place. @DOI: 10.1115/1.1669450#

  • analysis of an innovative Water desalination system using low grade solar heat
    Desalination, 2003
    Co-Authors: Sami Alkharabsheh, Yogi D Goswami
    Abstract:

    Abstract This paper presents a theoretical analysis and preliminary experimental results for an innovative Water desalination system using low-grade solar heat. The system utilizes natural means (gravity and atmospheric pressure) to create a vacuum under which Water can be rapidly evaporated at much lower temperatures and with less energy than conventional techniques. The system consists of an evaporator connected to a condenser. The vapor produced in the evaporator is driven to the condenser where it condenses and is collected as a product. The effect of various operating conditions, namely, withdrawal rate, Depth of Water body in the evaporator, temperature of the heat source, and condenser temperature, on the system performance were studied. Numerical simulations and preliminary experimental results show that the performance of this system is superior to a flat basin solar still, and the output may be twice that of a flat-basin solar still for the same input. Vacuum equivalent to 4 kPa (abs) or less can be created depending on the ambient temperature at which condensation takes place.

  • theoretical analysis of a Water desalination system using low grade solar heat
    Solar Energy, 2003
    Co-Authors: Sami Alkharabsheh, Yogi D Goswami
    Abstract:

    Theoretical analysis of a solar desalination system utilizing an innovative new concept, which uses low-grade solar heat, is presented. The system utilizes natural means of gravity and atmospheric pressure to create a vacuum, under which liquid can be evaporated at much lower temperatures and with less energy than conventional techniques. The uniqueness of the system is in the way natural forces are used to create vacuum conditions and its incorporation in a single system design where evaporation and condensation take place at appropriate locations without any energy input other than low grade heat. The system consists of solar heating system, an evaporator, a condenser, and injection, withdrawal, and discharge pipes. The effect of various operating conditions, namely, withdrawal rate, Depth of Water body, temperature of the heat source, and condenser temperature were studied. Numerical simulations show that the proposed system may have distillation efficiencies as high as 90% or more. Vacuum equivalent to 3.7 kPa (abs) or less can be created depending on the ambient temperature at which condensation will take place.Copyright © 2003 by ASME

Sami Alkharabsheh - One of the best experts on this subject based on the ideXlab platform.

  • theoretical analysis of a Water desalination system using low grade solar heat
    Journal of Solar Energy Engineering-transactions of The Asme, 2004
    Co-Authors: Sami Alkharabsheh, Yogi D Goswami
    Abstract:

    Theoretical analysis of a solar desalination system utilizing an innovative new concept, which uses low-grade solar heat, is presented. The system utilizes natural means of gravity and atmospheric pressure to create a vacuum, under which liquid can be evaporated at much lower temperatures and with less energy than conventional techniques. The uniqueness of the system is in the way natural forces are used to create vacuum conditions and its incorporation in a single system design where evaporation and condensation take place at appropriate locations without any energy input other than low grade heat. The system consists of solar heating system, an evaporator, a condenser, and injection, withdrawal, and discharge pipes. The effect of various operating conditions, namely, withdrawal rate, Depth of Water body, temperature of the heat source, and condenser temperature were studied. Numerical simulations show that the proposed system may have distillation efficiencies as high as 90% or more. Vacuum equivalent to 3.7 kPa (abs) or less can be created depending on the ambient temperature at which condensation will take place. @DOI: 10.1115/1.1669450#

  • analysis of an innovative Water desalination system using low grade solar heat
    Desalination, 2003
    Co-Authors: Sami Alkharabsheh, Yogi D Goswami
    Abstract:

    Abstract This paper presents a theoretical analysis and preliminary experimental results for an innovative Water desalination system using low-grade solar heat. The system utilizes natural means (gravity and atmospheric pressure) to create a vacuum under which Water can be rapidly evaporated at much lower temperatures and with less energy than conventional techniques. The system consists of an evaporator connected to a condenser. The vapor produced in the evaporator is driven to the condenser where it condenses and is collected as a product. The effect of various operating conditions, namely, withdrawal rate, Depth of Water body in the evaporator, temperature of the heat source, and condenser temperature, on the system performance were studied. Numerical simulations and preliminary experimental results show that the performance of this system is superior to a flat basin solar still, and the output may be twice that of a flat-basin solar still for the same input. Vacuum equivalent to 4 kPa (abs) or less can be created depending on the ambient temperature at which condensation takes place.

  • theoretical analysis of a Water desalination system using low grade solar heat
    Solar Energy, 2003
    Co-Authors: Sami Alkharabsheh, Yogi D Goswami
    Abstract:

    Theoretical analysis of a solar desalination system utilizing an innovative new concept, which uses low-grade solar heat, is presented. The system utilizes natural means of gravity and atmospheric pressure to create a vacuum, under which liquid can be evaporated at much lower temperatures and with less energy than conventional techniques. The uniqueness of the system is in the way natural forces are used to create vacuum conditions and its incorporation in a single system design where evaporation and condensation take place at appropriate locations without any energy input other than low grade heat. The system consists of solar heating system, an evaporator, a condenser, and injection, withdrawal, and discharge pipes. The effect of various operating conditions, namely, withdrawal rate, Depth of Water body, temperature of the heat source, and condenser temperature were studied. Numerical simulations show that the proposed system may have distillation efficiencies as high as 90% or more. Vacuum equivalent to 3.7 kPa (abs) or less can be created depending on the ambient temperature at which condensation will take place.Copyright © 2003 by ASME

Desh Bandhu Singh - One of the best experts on this subject based on the ideXlab platform.

  • performance analysis of basin type solar stills integrated with n identical photovoltaic thermal pvt compound parabolic concentrator cpc collectors a comparative study
    Solar Energy, 2017
    Co-Authors: Desh Bandhu Singh, G N Tiwari
    Abstract:

    Abstract In the present study, performance analysis of basin type solar stills integrated with N identical partially covered photovoltaic thermal (PVT) compound parabolic concentrator (CPC) Water collectors known as PVT-CPC active solar distillation systems have been carried out by incorporating the effect of Water Depth. Two Indian climatic conditions namely January (winter) and June (summer) have been considered for numerical computation. The average daily thermal, exergy, electrical, overall exergy, overall thermal efficiencies and average daily productivity have been evaluated for optimum number of collectors and mass flow rate and the results obtained have been compared. It has been concluded that single slope performs better than double slope PVT-CPC active solar still on the basis of average daily thermal efficiency, overall thermal efficiency and productivity if Depth of Water in the basin is more than 0.31 m and vice versa.

  • effect of energy matrices on life cycle cost analysis of partially covered photovoltaic compound parabolic concentrator collector active solar distillation system
    Desalination, 2016
    Co-Authors: Desh Bandhu Singh
    Abstract:

    Abstract This paper presents the life cycle cost analysis of partially covered photovoltaic thermal (PVT) compound parabolic concentrator (CPC) collector integrated solar distillation system known as PVT-CPC active solar distillation system by incorporating the effect of energy payback period. The thermal model of the system has been developed. The number of PVT-CPC collectors and mass flow rate has been optimized. The annual yield, EPF and LCCE have been found to be higher by 5%, 12.73% and 22.22% respectively for double slope than single slope PVT-CPC active solar distillation system at 0.14 m Depth of Water. However, production cost of Water at 5% rate of interest and EPBT have been found to be lower by 10.09% and 17.98% respectively for double slope PVT-CPC active solar distillation system. It is inferred that double slope performs better than single slope PVT-CPC active solar distillation system based on annual yield if Depth of Water is less than 0.19 m and vice-versa. The proposed system is self sustainable and it can meet the daily requirement of potable Water on commercial level as well as DC electrical power during sunshine hours.

  • effect of energy matrices on life cycle cost analysis of partially covered photovoltaic compound parabolic concentrator collector active solar distillation system
    Desalination, 2016
    Co-Authors: Desh Bandhu Singh, G N Tiwari
    Abstract:

    Abstract This paper presents the life cycle cost analysis of partially covered photovoltaic thermal (PVT) compound parabolic concentrator (CPC) collector integrated solar distillation system known as PVT-CPC active solar distillation system by incorporating the effect of energy payback period. The thermal model of the system has been developed. The number of PVT-CPC collectors and mass flow rate has been optimized. The annual yield, EPF and LCCE have been found to be higher by 5%, 12.73% and 22.22% respectively for double slope than single slope PVT-CPC active solar distillation system at 0.14 m Depth of Water. However, production cost of Water at 5% rate of interest and EPBT have been found to be lower by 10.09% and 17.98% respectively for double slope PVT-CPC active solar distillation system. It is inferred that double slope performs better than single slope PVT-CPC active solar distillation system based on annual yield if Depth of Water is less than 0.19 m and vice-versa. The proposed system is self sustainable and it can meet the daily requirement of potable Water on commercial level as well as DC electrical power during sunshine hours.

G N Tiwari - One of the best experts on this subject based on the ideXlab platform.

  • performance analysis of basin type solar stills integrated with n identical photovoltaic thermal pvt compound parabolic concentrator cpc collectors a comparative study
    Solar Energy, 2017
    Co-Authors: Desh Bandhu Singh, G N Tiwari
    Abstract:

    Abstract In the present study, performance analysis of basin type solar stills integrated with N identical partially covered photovoltaic thermal (PVT) compound parabolic concentrator (CPC) Water collectors known as PVT-CPC active solar distillation systems have been carried out by incorporating the effect of Water Depth. Two Indian climatic conditions namely January (winter) and June (summer) have been considered for numerical computation. The average daily thermal, exergy, electrical, overall exergy, overall thermal efficiencies and average daily productivity have been evaluated for optimum number of collectors and mass flow rate and the results obtained have been compared. It has been concluded that single slope performs better than double slope PVT-CPC active solar still on the basis of average daily thermal efficiency, overall thermal efficiency and productivity if Depth of Water in the basin is more than 0.31 m and vice versa.

  • effect of energy matrices on life cycle cost analysis of partially covered photovoltaic compound parabolic concentrator collector active solar distillation system
    Desalination, 2016
    Co-Authors: Desh Bandhu Singh, G N Tiwari
    Abstract:

    Abstract This paper presents the life cycle cost analysis of partially covered photovoltaic thermal (PVT) compound parabolic concentrator (CPC) collector integrated solar distillation system known as PVT-CPC active solar distillation system by incorporating the effect of energy payback period. The thermal model of the system has been developed. The number of PVT-CPC collectors and mass flow rate has been optimized. The annual yield, EPF and LCCE have been found to be higher by 5%, 12.73% and 22.22% respectively for double slope than single slope PVT-CPC active solar distillation system at 0.14 m Depth of Water. However, production cost of Water at 5% rate of interest and EPBT have been found to be lower by 10.09% and 17.98% respectively for double slope PVT-CPC active solar distillation system. It is inferred that double slope performs better than single slope PVT-CPC active solar distillation system based on annual yield if Depth of Water is less than 0.19 m and vice-versa. The proposed system is self sustainable and it can meet the daily requirement of potable Water on commercial level as well as DC electrical power during sunshine hours.

Amimul Ahsan - One of the best experts on this subject based on the ideXlab platform.

  • factors affecting the performance of triangular pyramid solar still
    Desalination, 2014
    Co-Authors: Ravishankar Sathyamurthy, P K Nagarajan, Hyacinth J Kennady, Amimul Ahsan
    Abstract:

    This work presents a few important factors that affect the performance of a triangular pyramid solar still. An experimental work has been conducted to find the effect of Water Depth on the performance of the triangular pyramid solar still. From the present study, it is concluded that the convective and evaporative heat transfer coefficients are important for designing solar distillation systems and the effect of temperature difference between the evaporative and condensing surfaces is also important to optimize the operating temperature range. The condensing area of the solar still is more than that of evaporating area. Thus the experimental results showed that the effect of Depth of Water in the solar still affects the fresh Water production. Nevertheless, outdoor experimental tests were conducted to study the effect of wind speed variations to cool down the glass cover. It was found that increasing the wind speed from 1.5 to 3 m/s and to 4.5 m/s has the effect of increasing the still productivity by 8 and 15.5% respectively.