Thermodynamic analysis of EMISE–Water as a working pair for absorption refrigeration system

Takalkar, Gorakshnath; Bhosale, Rahul R.; Mali, Nilesh A.; Bhagwat, Sunil S.

doi:10.1016/j.applthermaleng.2018.11.092

Cited by 33 publications

(11 citation statements)

References 40 publications

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“…As shown in Figure 1, computer simulation to estimate the efficiency of single effect VACs was performed for operating conditions of T g = 100°C, T a = 30°C, T c = 40°C, T e = 10°C. As listed in Table 2, performance of VACs by using [EMIM][DMP]‐H 2 O were compared with the commercial working pairs namely NH 3 ‐H 2 O, 55 LiBr‐H 2 O 55 and other two ILs [EMIM] [BF4]‐H 2 O, 56 and EMISE‐H 2 O 48 . Estimated COP of VACs using [EMIM][DMP]‐H 2 O is found to be better than other working pairs namely NH 3 ‐H 2 O, [EMIM] [BF4]‐H 2 O and EMISE‐H 2 O.…”

Section: Resultsmentioning

confidence: 99%

“…Such combinations of IL-H 2 O as an ideal working pair are involved to accomplish desirable ideal properties. 48 It can be noticed that, previous study has been involved on the performance analysis of VACs based on first law of thermodynamics. 46,49,50 There has been forthcoming concern in the usage of the second law of thermodynamics with consideration of exergy destruction.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the current research direction is focused more towards investigation of an ideal working fluids based on ionic liquids as absorbent and widely accepted water as a green refrigerant. Such combinations of IL‐H 2 O as an ideal working pair are involved to accomplish desirable ideal properties 48 …”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic properties and performance evaluation of [EMIM] [DMP]‐H ₂ O working pair for absorption cooling cycle

Takalkar

2019

Int J Energy Res

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The combination of ionic liquid-refrigerant based [EMIM][DMP]-H 2 O as an alternative working pair for single effect vapor absorption cycles (VACs) is assessed and optimized by using energy and exergy based performances. Thermodynamics properties of binary mixture of [EMIM] [DMP]-H 2 O like Dühring's (P-T-x1) and h-T-X1 plots are computed from the activity coefficient based non-random two-liquid model (NRTL) model. Further modeling and simulation of VACs are accomplished in open source Scilab as mathematical programing software and used to ascertain the optimal generator temperature established on energetic and exergetic COP. Optimal results include an extensive range of temperatures like T e from 2.5 to 15 C and T a and T c from 30 to 45 C. Simulation of the single effect VAC with SHE by using [EMIM][DMP]-H 2 O mixture at T e = 10 C, T g = 100 C, T a = 30 C, and T c = 40 C were evaluated and compared with the 5 working fluids. Simulation outcomes depicted greater COP of 0.82 for [EMIM][DMP]-H 2 O in comparison with NH 3-H 2 O, EMISE-H 2 O, [EMIM][BF4]-H 2 O and nearly equal to LiBr-H 2 O (COP = 0.83). In addition, the effect of T g on the COP, ECOP f , and composition are compared and optimized for the evaporation temperature range from 2.5 to 15 C, T a /T c from 30 to 45 C and cooling water (CW) flow in series and parallel. Additionally, the optimal T g exhibited distinction based on energy and exergy analysis. Thus, it resulted in optimized performances of [EMIM] [DMP]-H 2 O that can be suitable to replace corrosive aqueous LiBr in VACs.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Thermodynamic properties and performance evaluation of [EMIM] [DMP]‐H ₂ O working pair for absorption cooling cycle

Takalkar

2019

Int J Energy Res

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“…Thermal energy (often from renewable or waste-heat sources) is supplied to separate the refrigerant from the absorbent by boiling it out of solution. The pure refrigerant is then condensed before being supplied as a liquid for the evaporation process [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of an ammonia-water-hydrogen diffusion absorption refrigerator

et al. 2019

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Diffusion absorption refrigeration (DAR) is a small-scale cooling technology that can be driven purely by thermal energy without the need for electrical or mechanical inputs. In this work, a detailed experimental evaluation was undertaken of a newly-proposed DAR unit with a nominal cooling capacity of 100 W, aimed at solar-driven cooling applications in warm climates. Electrical cartridge heaters were used to provide the thermal input which was varied in the range 150-700 W, resulting in heat source temperatures of 175-215 • C measured at the generator. The cooling output during steady-state operation was determined from the power consumed by an electric heater used to maintain constant air temperature in an insulated box constructed around the evaporator. Tests were performed with the DAR system configured with the default manufacturer's settings (22 bar charge pressure and 30 % ammonia concentration). The measured cooling output (to air) across the range of generator heat inputs was 24-108 W, while the coefficient of performance (COP) range was 0.11-0.26. The maximum COP was obtained at a generator heat input of 300 W. Results were compared to performance predictions from a steady-state thermodynamic model of the DAR cycle, showing a reasonable level of agreement at the nominal design point of system, but noteworthy deviations at part-load/off-design conditions. Temperature measurements from the experimental apparatus were used to evaluate assumptions used in the estimation of the model state point parameters and examine their influence on the predicted system performance.

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“…As these systems are simple in design and can operate with low-temperature range, less nosy as compared to another system [6]. To overcome the size of the systems, operating cost and to increase the Coefficient of performance of the system multi-effect systems are now designed [7] already, multi-effect systems have been introduced in the market [8], having increased coefficient of performance of vapour absorption refrigeration system like double effect, triple effect system. [9].…”

Section: Introductionmentioning

confidence: 99%

Thermal Examination of Vapour Absorption System using Experimental Design Method

2019

ijeat

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The experimental investigation has been carried out for 100 kW triple-effect vapor absorption refrigeration systems using parabolic trough collector. The data have been recorded and analyzed for designing a new vapor absorption refrigeration system with process heat for industrial applications for Gurugram regions of India. The solar resources have also been analyzed for designing of the system. The thermodynamic evaluation of 100 kW triple-effect vapor absorption refrigeration systems has analyzed for different parameters. The heat is supplied from solar thermal technology which converts solar radiation to useful heat of the total input energy of the proposed cooling system is taken from the heat transfer fluid through parabolic trough collector (PTC) as per availability of solar insolation at the pressurized water of 140-180 oC supplied to the generator at a mass flow rate of 7 kg/s. It is analyzed that in the month of November radiation drops because of cosine losses as compared to May and Direct Normal Irradiance decreases in the month of December, January, July, August, and September.

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Thermodynamic analysis of EMISE–Water as a working pair for absorption refrigeration system

Cited by 33 publications

References 40 publications

Thermodynamic properties and performance evaluation of [EMIM] [DMP]‐H ₂ O working pair for absorption cooling cycle

Thermodynamic properties and performance evaluation of [EMIM] [DMP]‐H ₂ O working pair for absorption cooling cycle

Experimental investigation of an ammonia-water-hydrogen diffusion absorption refrigerator

Thermal Examination of Vapour Absorption System using Experimental Design Method

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Thermodynamic analysis of EMISE–Water as a working pair for absorption refrigeration system

Cited by 33 publications

References 40 publications

Thermodynamic properties and performance evaluation of [EMIM] [DMP]‐H 2 O working pair for absorption cooling cycle

Thermodynamic properties and performance evaluation of [EMIM] [DMP]‐H 2 O working pair for absorption cooling cycle

Experimental investigation of an ammonia-water-hydrogen diffusion absorption refrigerator

Thermal Examination of Vapour Absorption System using Experimental Design Method

Contact Info

Product

Resources

About

Thermodynamic properties and performance evaluation of [EMIM] [DMP]‐H ₂ O working pair for absorption cooling cycle

Thermodynamic properties and performance evaluation of [EMIM] [DMP]‐H ₂ O working pair for absorption cooling cycle