The Experts below are selected from a list of 234 Experts worldwide ranked by ideXlab platform
H.p. Garg - One of the best experts on this subject based on the ideXlab platform.
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Design curves for conventional solar air heaters
Renewable Energy, 1995Co-Authors: C. Choudhury, P.m. Chauhan, H.p. GargAbstract:The objective of this work is to assess the combined effects of fixed pressure drop and specific air mass flow rate on duct dimensions (length and depth) of single-pass-with-Bare-Plate, single-cover and double-cover solar air heaters, and to obtain the resultant system efficiency that corresponds to a pre-fixed pumping cost and a minimum material cost per unit area of the system. The design selection methodology adopted in this paper will make it feasible for an air-heater designer to construct efficient and economical solar air heaters.
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On the cost-effectiveness of solar air heaters
International Journal of Energy Research, 1995Co-Authors: C. Choudhury, P.m. Chauhan, H.p. GargAbstract:In this communication, a detailed theoretical performance and economic analysis of conventional solar air heaters with Bare Plate, single cover and double cover have been reported. Evaluation of the annual cost (AC) and the annual energy gain (AEG) of the collectors has been performed and the ratio AC/AEG is displayed for different combined values of m, L and Z to make it feasible for the users to select optimum design and operational features which correspond to minimum AC/AEG.
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Design studies of packed-bed solar air heaters
Energy Conversion and Management, 1993Co-Authors: C. Choudhury, H.p. Garg, Jai PrakashAbstract:Abstract The primary concern of the investigations reported in the present paper is the optimization of the design and operational parameters of packed-bed air heaters with single Plate (non-selective absorber for non-absorbing packing and glass cover for black painted absorbing packing) above the air channel. For cost-effective applications of the collectors, it is important that, in addition to higher efficiency, the power consumption of the systems be low. Use is, therefore, made of the inter-relationship of the packing size and porosity, air flow rate, duct depth and length with efficiency and pumping power to determine the optimum values of the parameters that would result in higher efficiency but moderate fan running cost. The results are also compared with that of the conventional Bare Plate air heater without packing in the air channel.
Ugur Atikol - One of the best experts on this subject based on the ideXlab platform.
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An experimental study on an inclined solar water distillation system
Desalination, 2005Co-Authors: Hikmet Ş. Aybar, Fuat Egelioğlu, Ugur AtikolAbstract:An inclined solar water distillation system was designed and tested under actual environmental conditions of northern Cyprus. Unlike solar still systems, the feed water falls down on the solar absorber Plate, and the system produces fresh water and hot water simultaneously. It was suspected that the longer the flowing water is held on the absorber Plate, the greater the rate of evaporation, leading to an increase in the amount of distilled water. Therefore, the system was tested with three variants: Bare Plate, black-cloth wick, and black-fleece wick. As was expected, the wicks increased the fresh water generation by two or three times of a Bare Plate. The hot water temperature was good enough for domestic usage.
C. Choudhury - One of the best experts on this subject based on the ideXlab platform.
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Design curves for conventional solar air heaters
Renewable Energy, 1995Co-Authors: C. Choudhury, P.m. Chauhan, H.p. GargAbstract:The objective of this work is to assess the combined effects of fixed pressure drop and specific air mass flow rate on duct dimensions (length and depth) of single-pass-with-Bare-Plate, single-cover and double-cover solar air heaters, and to obtain the resultant system efficiency that corresponds to a pre-fixed pumping cost and a minimum material cost per unit area of the system. The design selection methodology adopted in this paper will make it feasible for an air-heater designer to construct efficient and economical solar air heaters.
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On the cost-effectiveness of solar air heaters
International Journal of Energy Research, 1995Co-Authors: C. Choudhury, P.m. Chauhan, H.p. GargAbstract:In this communication, a detailed theoretical performance and economic analysis of conventional solar air heaters with Bare Plate, single cover and double cover have been reported. Evaluation of the annual cost (AC) and the annual energy gain (AEG) of the collectors has been performed and the ratio AC/AEG is displayed for different combined values of m, L and Z to make it feasible for the users to select optimum design and operational features which correspond to minimum AC/AEG.
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Design studies of packed-bed solar air heaters
Energy Conversion and Management, 1993Co-Authors: C. Choudhury, H.p. Garg, Jai PrakashAbstract:Abstract The primary concern of the investigations reported in the present paper is the optimization of the design and operational parameters of packed-bed air heaters with single Plate (non-selective absorber for non-absorbing packing and glass cover for black painted absorbing packing) above the air channel. For cost-effective applications of the collectors, it is important that, in addition to higher efficiency, the power consumption of the systems be low. Use is, therefore, made of the inter-relationship of the packing size and porosity, air flow rate, duct depth and length with efficiency and pumping power to determine the optimum values of the parameters that would result in higher efficiency but moderate fan running cost. The results are also compared with that of the conventional Bare Plate air heater without packing in the air channel.
Fuat Egelioğlu - One of the best experts on this subject based on the ideXlab platform.
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An empirical evaluation of an integrated inclined solar water desalination system with spray jets variation
Desalination and Water Treatment, 2013Co-Authors: O. Phillips Agboola, Fuat EgelioğluAbstract:AbstractIn this study, the productivity of an integrated inclined solar water desalination system with spray jets was empirically investigated. The effects of the feed water flow rate, solar radiation, ambient temperature, absorber Plate temperature, cavity air temperature, glass cover temperature, variation in number of spray jets, and inlet and outlet temperature of the feed water on the daily production of the system were studied. The results show that the system productivity increases with two spray jets rather than with four and six jets tested on the system. The daily production also increases by cooling the system glazing and by solar radiation intensity. The inclusion of a wick (black cloth) on the absorber Plate has a significant effect on the system production. The wick improved the daily production of the system by 23%. The daily production of the system with a wick on the absorber Plate in the summer season is recorded as 6.41 kg/m2 while the daily production with a Bare Plate absorber is reco...
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An experimental investigation of an improved incline solar water desalination system in Famagusta
Scientific Research and Essays, 2011Co-Authors: O. Phillips Agboola, Fuat EgelioğluAbstract:This study investigated the performance of an improved incline solar water desalination (ISWD) system under the influence of two different weather conditions (winter and summer seasons) in Famagusta, Northern Cyprus. The experimental investigation studied the effects of solar radiation intensity, wick on the Plate absorber and the Bare Plate absorber on the daily production and efficiency of the ISWD system. The results obtained from this investigation were compared with other researcher works (mathematical and experimental) in literature. The experimental results of the system (with wick) gave daily production (Pd) as 6.41 kg/m2 day in summer (with an experimental duration of 8:00 am to 16:00 pm) while it was 3.327 kg/m2 day (with an experimental duration of 8:30 am to 15:30 pm) in winter. One major comparison was with the theoretical results by Aybar (2006) which yield between 3.5 to 5.0 kg/m2 day (7:00 am to 7:00 pm) for summer season. The summer experimental result was higher than the predicted theoretical result range by Aybar (2006). One possible reason for disagreement between the experimental investigation and the theoretical prediction in summer was that the theoretical work did not put into consideration the re-use of the exit water (that is, higher temperature) as feed water for the system as used in the experiment. The daily efficiency () was found to be 52.4% in summer season while the efficiency dropped in winter to 43.6%. Key words: Solar desalination, incline solar water desalination, solar still, daily production, potable water.
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An experimental study on an inclined solar water distillation system
Desalination, 2005Co-Authors: Hikmet Ş. Aybar, Fuat Egelioğlu, Ugur AtikolAbstract:An inclined solar water distillation system was designed and tested under actual environmental conditions of northern Cyprus. Unlike solar still systems, the feed water falls down on the solar absorber Plate, and the system produces fresh water and hot water simultaneously. It was suspected that the longer the flowing water is held on the absorber Plate, the greater the rate of evaporation, leading to an increase in the amount of distilled water. Therefore, the system was tested with three variants: Bare Plate, black-cloth wick, and black-fleece wick. As was expected, the wicks increased the fresh water generation by two or three times of a Bare Plate. The hot water temperature was good enough for domestic usage.
Hikmet Ş. Aybar - One of the best experts on this subject based on the ideXlab platform.
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Performance analysis of single and double basin-inclined solar water distillation systems with and without black-fleece wick
Desalination and Water Treatment, 2015Co-Authors: Hikmet Ş. Aybar, Foad Irani, Mevlut ArslanAbstract:AbstractThe aim of this study is to design and to test the double basin-inclined solar water distillation (DB-ISWD) system and compare it with the single basin-inclined solar water distillation (SB-ISWD) system under the northern Cyprus environmental conditions. The SB-ISWD and the DB-ISWD systems have the ability to produce both freshwater and hot water at the same time. In the SB-ISWD system, the feeding water falls down on the Bare Plate (BP) through the distribution pipe. The DB-ISWD system has two sections: the lower section and the upper section. In the lower section, the feeding water falls down on the BP through distribution pipe. In the upper section, the feeding water falls down on the transparent glass through distribution pipe. These systems are tested by two variants: BP and with black-fleece wick. It is observed that both systems show higher production rate of freshwater when the black-fleece wick is used. Also, the hot water production by both systems is hot enough for domestic appliances. ...
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An experimental study on an inclined solar water distillation system
Desalination, 2005Co-Authors: Hikmet Ş. Aybar, Fuat Egelioğlu, Ugur AtikolAbstract:An inclined solar water distillation system was designed and tested under actual environmental conditions of northern Cyprus. Unlike solar still systems, the feed water falls down on the solar absorber Plate, and the system produces fresh water and hot water simultaneously. It was suspected that the longer the flowing water is held on the absorber Plate, the greater the rate of evaporation, leading to an increase in the amount of distilled water. Therefore, the system was tested with three variants: Bare Plate, black-cloth wick, and black-fleece wick. As was expected, the wicks increased the fresh water generation by two or three times of a Bare Plate. The hot water temperature was good enough for domestic usage.