Performance analysis of solar assisted multi-effect absorption cooling systems using nanofluids: A comparative analysis

Ratlamwala, Tahir Abdul Hussain; Abid, Muhammad

doi:10.1002/er.3980

Cited by 34 publications

(24 citation statements)

References 36 publications

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“…The double effect absorption chiller system is proposed in the analysis because of its tendency to attain the greater COP, whereas, the rate of cooling is also determined, on the other hand, the air handling unit is implemented which is used to serve the warm air by utilizing the quantity of heated water which flows out from the high temperature generator . Moreover, absorber, condenser, low pressure generator, pumps, heat exchangers and the cooling tower is also implemented in the system.…”

Section: Introductionmentioning

confidence: 99%

Energy and exergy analyses of the solar assisted multigeneration system with thermal energy storage system

Ratlamwala

Gill

2019

Energy Storage

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The following analysis has been conducted to investigate the energy and exergy efficiencies of solar assisted multigeneration system, the system comprises of parabolic trough solar collector, thermal energy storage tank, regenerative power plant, double effect absorption cooling system, and PEM electrolyzer. The variation in energy and exergy efficiencies of the parabolic solar trough collector with respect to solar absorptivity is also shown in the analysis. The heat transfer rate, the resultant outputs, the efficiencies, and the rate of exergy destructions for each component are calculated. The freshwater is used as the primary working fluid for the overall cycle and the net power produced by the low-pressure turbine is 1.384 MW, additionally, the rate of heat produced by the thermal storage tank is 205.7 kW and the calculated thermal efficiency of the thermal storage tank is 14.33%. The overall analysis has been done by using engineering equation solver and parametric results are shown in order to determine the variations in the system. K E Y W O R D Sdouble effect vapor absorption chiller system, proton exchange membrane electrolyzer plant, regenerative power cycle, solar assisted multigeneration system, thermal storage system

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Section: Introductionmentioning

confidence: 99%

Energy and exergy analyses of the solar assisted multigeneration system with thermal energy storage system

Ratlamwala

Gill

2019

Energy Storage

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“…Eventually, high density may also require high pumping force owing to the resistance in the flow field. 21 Initially, the viscosity of the fluid was higher at room temperature irrespective of the nanomaterial. The density of the nanoparticles increases as the percentage of the nanofluids increases.…”

Section: Nanoparticles Density and Viscositymentioning

confidence: 99%

“…Compared with all nanoparticles, MWCNT has higher viscosity compared with others. 21 Initially, the viscosity of the fluid was higher at room temperature irrespective of the nanomaterial. As the temperature ascended, the viscosity of nanoparticles reduced significantly.…”

Section: Nanoparticles Density and Viscositymentioning

confidence: 99%

Progress of MWCNT, Al ₂ O ₃ , and CuO with water in enhancing the photovoltaic thermal system

et al. 2019

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Hybrid photovoltaic thermal system is an effective method to convert solar energy into electrical and thermal energy. However, its effectiveness is widely affected due to the high temperature of photovoltaic panel, and it can be minimized by employing nanofluids to the PV/T systems. In this research, the effect of various nanoparticles on the PV/T systems was studied experimentally. The nanofluids Al 2 O 3 , CuO, and multiwall carbon nanotube (MWCNT) were dispersed with water at different volume fractions of 0, 0.5, 1, 2.5, and 5 (vol%) using ultrasonication process. The effect of nanomaterials on viscosity and density was classified. All tests were carried out in an outdoor laboratory setup for calibrating the PV temperatures, thermal conductivity, electrical power, electrical efficiency, and overall efficiency. In addition, the energy analyses were also made to estimate the loss of heat owing to the nanofluids. Results show that use of the nanofluid increased the electric power and electrical efficiency of PV/T compared with water. Furthermore, MWCNT and CuO reduced the cell temperature by 19%. Consequently, the nanofluids MWCNT, Al 2 O 3 , and CuO produced the impressive values of 60%, 55%, and 52% increase in an average electrical efficiency than conventional PV. Particularly, the MWCNT produced superior results compared with other materials. It is evidently clear from the result that the introduction of the nanofluid increases the thermal efficiency without adding any extra energy to the system. Moreover, insertion of Al 2 O 3 , CuO, and MWCNT on PV/T system increases the exergy efficiency more than conventional PV module.How to cite this article: Sangeetha M, Manigandan S, Chaichan MT, Kumar V. Progress of MWCNT, Al 2 O 3 , and CuO with water in enhancing the photovoltaic thermal system. Int J Energy Res.

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“…Depending on the case, the dynamic viscosity (μ) is of either the base fluid or the nanofluid; D i is the inner diameter of the collector tubes. The velocity of fluid is calculated by Equation 19:…”

Section: Flat-plate Solar Collectormentioning

confidence: 99%

“…Moreover, there is a lack of available literature that illustrates the influence of nanoparticles on the performance of solar‐driven VARSs. Ratlamwala and Abid have incorporated the Al 2 O 3 nanoparticles inside the PTC and comparatively identified the impact of nanofluids on the performance of the multieffect LiBr‐H 2 O absorption system. Bellos and Tzivanidis have examined the performance of an FPC‐coupled VARS with LiBr‐H 2 O as a working pair and Cu/H 2 O nanofluid and found 0.84% enhancement in SCOP.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of a solar‐driven novel salt‐based absorption chiller with the implementation of nanoparticles

2019

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Summary The present study exemplifies the comprehensive thermal analysis to compare and contrast ammonia‐lithium nitrate (NH3‐LiNO3) and ammonia‐sodiumthiocynate (NH3‐NaSCN) absorption systems with and without incorporation of nanoparticles. A well‐mixed solution of copper oxide/water (CuO/H2O) nanofluid is considered inside a flat‐plate collector linked to an absorption chiller to produce 15‐kW refrigeration at −5°C evaporator temperature. Enhancements in heat transfer coefficient, thermal efficiency, and useful heat gain of the collector are evaluated, and the effect of these achievements on the performance of both absorption chillers have been determined for different source temperatures. A maximum 121.7% enhancement is found in the heat transfer coefficient with the application of the nanofluid at 2% nanoparticle concentration. The maximum coefficient of performance observed for the NH3‐NaSCN chiller is 0.12% higher than that for the NH3‐LiNO3 chiller at 0°C evaporator temperature. Contradictory to this, the average system coefficient of performance of the NH3‐LiNO3 absorption system has been found 5.51% higher than that of the NH3‐NaSCN system at the same evaporator temperature. Moreover, the application of the nanofluid enhanced the performance of the NH3‐NaSCN and NH3‐LiNO3 systems by 2.70% and 1.50%, respectively, for lower generator temperature and becomes almost the same at higher temperatures, which altogether recommends the flat‐plate collector–coupled NH3‐LiNO3 absorption system be integrated with a nanofluid.

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Performance analysis of solar assisted multi-effect absorption cooling systems using nanofluids: A comparative analysis

Cited by 34 publications

References 36 publications

Energy and exergy analyses of the solar assisted multigeneration system with thermal energy storage system

Energy and exergy analyses of the solar assisted multigeneration system with thermal energy storage system

Progress of MWCNT, Al ₂ O ₃ , and CuO with water in enhancing the photovoltaic thermal system

Comparative analysis of a solar‐driven novel salt‐based absorption chiller with the implementation of nanoparticles

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