Performance Evaluation of Vapor Compression Refrigeration System by Varying Air Flow Rates in Air-Cooled and Evaporatively Cooled Condensers

Hussain, Taliv; Singh, Amit Kumar; Mittal, Ankur; Verma, Ashish; Alam, Zafar

doi:10.1615/interjenercleanenv.2020029330

Cited by 16 publications

(7 citation statements)

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“…After 90 min of charging, the stored energy in the experiment was 1.01 MJ, while the numerical model predicted 0.99 MJ. Hussain et al 30 evaluated a vapor compression refrigeration system with air‐cooled and evaporatively cooled condensers. Compared with the performance of the system with an air‐cooled condenser at 23°C and an airflow of 0.88 m/s, an evaporative cooler with cellulose and steel wire pads significantly increased the performance by 2.3% and 1.1%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Experimental comparison of solar drying based on evacuated tube collector with desiccant drying for dehydrating potato and ginger

Vyas,

Singh,

Agrawal

et al. 2024

Heat Trans

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In this article, a comparative study of different drying techniques, namely, open sun drying (OSD), desiccant drying, solar drying (SD), and solar drying with desiccant (SDWD) was done for drying potato and ginger. The thermal efficiency and air temperature differences of the solar dryer based on evacuated tube collectors were also examined. The average efficiency of the solar dryer was 29.01%. Average drying rates of OSD, desiccant drying, SD, and SDWD bed are 0.435, 0.435, 0.59, and 0.635 g/min. The moisture content of the potato was reduced from 79.6% to 32.9% by OSD, 32.6% by desiccant drying, 9.6% by SD, and 6.9% by SDWD. The moisture content of the ginger was reduced from its initial value of 82.3%–25.3% by OSD, 25% by desiccant drying, 10.1% by SD, and 3.2% by SDWD. SD assisted with a desiccant bed proved to be the best method for drying vegetables. Drying with desiccants is not feasible for drying in winter and spring seasons of the Indian climate.

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Section: Introductionmentioning

confidence: 99%

Experimental comparison of solar drying based on evacuated tube collector with desiccant drying for dehydrating potato and ginger

Vyas,

Singh,

Agrawal

et al. 2024

Heat Trans

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“…Also, by choosing to cover the warmth exchanger with a material of polymer composite rather than silica gel, the proficiency of second law of desiccant wheel is upgraded via 2.6. Hussain et al [6] compare the performance of evaporatively cooled and steel wire mesh condenser and improve the heat rejection rate with less energy utilization.…”

Section: Introductionmentioning

confidence: 99%

Experimental Exploration on Performance Advancement of Solid Desiccant Dehumidifier

Alam

Hussain

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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The foremost idea of this current effort is to study the performance parameters of silica gel based desiccant dehumidifier and optimize its performance on the basis of Process air inlet velocities and air inlet temperatures. Desiccant dehumidifier considered in this work is coupled with the VCRS system. This Analysis is carried out for hot and humid conditions at four different air velocities (i.e. 2.8, 3.5, 4.5, 5.2 m/s) and different ambient temperatures (i.e. 32, 33, 34, 35°C). Regeneration rate and adsorption rate at different air flow rates and at different ambient temperatures is analysed. Regeneration is occurring through an electric heater fitted in the regeneration sector. Thermal factors, for instance temperature (dry bulb) and relative dampness are measured to enhance performance parameters like Adsorption rate, latent COP, Regeneration rate and Effectiveness of desiccant of wheel. Revamp values of this parameters are obtained at 3.5 m/s entering velocity of process air and 34°C ambient temperature which results in better performance of desiccant dehumidifier with less energy utilization for the conditioned space.

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“…They suggested that cooling is improved up to critical speed i.e., 2 m/s for the spherical food product orange [5]. Hussain et al (2020) optimized the COP of the VCRS system by using steel cellulose and wire mesh condensers. They suggested that COP in case of cellulose condensers is more than the steel wire mesh condensers due to evaporative cooling [6].…”

Section: Introductionmentioning

confidence: 99%

“…Hussain et al (2020) optimized the COP of the VCRS system by using steel cellulose and wire mesh condensers. They suggested that COP in case of cellulose condensers is more than the steel wire mesh condensers due to evaporative cooling [6]. optimized the performance of desiccant-based dehumidifier based on process air flow rates and process air ambient temperature on the basis of regeneration rate and other performance parameters [7][8].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Heat Transfer Performance of Rotatory Desiccant Dehumidifier

Alam

Hussain²

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Dry air plays an essential role in achieving human comfort and in other applications like product drying, food storage, etc. one of the best methods to produce dry air is by employing a desiccant dehumidifier. A rotatory desiccant wheel with silica gel is used in the present work. Current work involves the optimization of the desiccant wheel performance in terms of airflow rates along with ambient temperatures. Optimization of desiccant wheel is suggested by maximum value of various performance parameters involved in this study. Required conditions have been set up by the pre-treatment section installed before the desiccant wheel. At the regeneration section two electric heater (250 watt each) is fitted through which the desiccant material is regenerated. This work is conducted for humid and hot conditions and found that the optimum functioning of desiccant wheel dehumidifier is found at 31°C ambient temperature and at the inlet 3.5 m/s velocity of air.

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Performance Evaluation of Vapor Compression Refrigeration System by Varying Air Flow Rates in Air-Cooled and Evaporatively Cooled Condensers

Cited by 16 publications

References 0 publications

Experimental comparison of solar drying based on evacuated tube collector with desiccant drying for dehydrating potato and ginger

Experimental comparison of solar drying based on evacuated tube collector with desiccant drying for dehydrating potato and ginger

Experimental Exploration on Performance Advancement of Solid Desiccant Dehumidifier

Experimental Investigation on Heat Transfer Performance of Rotatory Desiccant Dehumidifier

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