Vapor absorption system powered by different solar collectors types: Cooling performance, optimization, and economic comparison

Kumar, Vinay; Pandya, Bhargav; Patel, Jatinkumar; Matawala, Vijay

doi:10.1080/23744731.2018.1431479

Cited by 7 publications

(2 citation statements)

References 31 publications

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“…The ambient temperature has an insignificant effect on the energetic COP, but a significant impact on the exergetic COP of the absorption cooling system. [28,29] Kumar et al [30] comparatively analyzed the performance of absorption cooling systems with various refrigerants integrated with four various solar collectors (FPC, CPC, PTC, and ETC). From optimized results, it was observed that ETC was economical, whereas PTC has a better exergy efficiency.…”

Section: Introductionmentioning

confidence: 99%

Performance Assessment of Spectrum Selective Nanofluid‐Based Cooling for a Self‐Sustaining Greenhouse

Sajid

Biçer

2020

Energy Tech

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In hot climatic conditions, the temperature inside a greenhouse is much higher than the ambient temperature and requires significant cooling to maintain the temperature in the optimal range. This study proposes a novel concept for a selfsustaining greenhouse, which integrates evacuated tube collectors, a multistage flash desalination system, vapor absorption cooling system, and photovoltaic thermal (PV/T) system to produce freshwater, cooling, and electricity. The PV/T system uses spectrum selective nanofluid that is circulated over the roof of the greenhouse and absorbs solar radiation having wavelengths greater than 1400 nm to reduce cooling load inside the greenhouse and optimize the spectrum use. The performance of the proposed system is evaluated using energy and exergy analysis. The energy efficiencies of the evacuated tube collector, desalination unit, and PV/T system are obtained as 45.85%, 46.16%, and 51.25%, respectively. The absorption cooling system achieves an energetic coefficient of performance of 0.83. The overall energy and exergy efficiencies of the proposed system are found to be 30% and 5.88%, respectively. The application of spectrum selective nanofluid on the roof of the greenhouse yields about 26% reduction in the cooling load of the greenhouse.

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Section: Introductionmentioning

confidence: 99%

Performance Assessment of Spectrum Selective Nanofluid‐Based Cooling for a Self‐Sustaining Greenhouse

Sajid

Biçer

2020

Energy Tech

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“…The absorption cycle does not have very demanding operating conditions. The most common working fluid for absorption cycle is ammonia‐water (NH 3 ‐H 2 O) and lithium bromide–water (LiBr‐H 2 O) solutions, although the latter one is preferred as it has more coefficient of performance (COP) and thus is a better working fluid . Atmaca and Yigit simulated the working of an absorption cycle, which was powered through solar energy and used aqueous lithium bromide as a working fluid.…”

Section: Introductionmentioning

confidence: 99%

Geothermal and solar energy–based multigeneration system for a district

et al. 2019

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Summary In this study, parabolic trough collector with an integrated source of geothermal water is used with regenerative Rankine cycle with an open feedwater heater, an electrolyzer, and an absorption cooling system. The absorption fluids used in the solar collectors were Al2O3‐ and Fe2O3‐based nanofluids. Detailed energetic and exergetic analyses are done for the whole system including all the components. A comparative analysis of both the used working fluids is done and plotted against their different results. The parameters that are varied to change the output of the system are ambient temperature, solar irradiance, the percentage of nanofluids, the mass flow rate of the geothermal well, the temperature gradient of the geothermal well that had an effect on the net power produced, and the outlet temperature of the solar collector overall energetic and exergetic efficiencies. Other useful outputs by this domestic integrated multigeneration system are the heating of domestic water, space heating (maintaining the temperature at 40°C‐50°C), and desalination of seawater (flash distillation). The hydrogen production rate for both the fluids diverges with each other, both producing average from 0.00490 to 0.0567 g/s.

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A Comprehensive Review on LiBr–H2O Based Solar-Powered Vapour Absorption Refrigeration System

Shaw

Mahendru

2019

Lecture Notes in Mechanical Engineering

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Vapor absorption system powered by different solar collectors types: Cooling performance, optimization, and economic comparison

Cited by 7 publications

References 31 publications

Performance Assessment of Spectrum Selective Nanofluid‐Based Cooling for a Self‐Sustaining Greenhouse

Performance Assessment of Spectrum Selective Nanofluid‐Based Cooling for a Self‐Sustaining Greenhouse

Geothermal and solar energy–based multigeneration system for a district

A Comprehensive Review on LiBr–H2O Based Solar-Powered Vapour Absorption Refrigeration System

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