Comprehensive performance analysis and optimization of 1,3-dimethylimidazolylium dimethylphosphate-water binary mixture for a single effect absorption refrigeration system

doi:10.1007/s11708-021-0720-9

Front. Energy

2022, Vol. 16

Issue (3) : 521-535 https://doi.org/10.1007/s11708-021-0720-9

RESEARCH ARTICLE

Comprehensive performance analysis and optimization of 1,3-dimethylimidazolylium dimethylphosphate-water binary mixture for a single effect absorption refrigeration system

Gorakshnath TAKALKAR(

), Ahmad K. SLEITI(

)

Collage of Engineering, Qatar University, Doha 2713, Qatar

Download: PDF(2181 KB) HTML
Export: BibTeX | EndNote | Reference Manager | ProCite | RefWorks

Abstract

The energy and exergy analyses of the absorption refrigeration system (ARS) using H₂O-[mmim][DMP] mixture were investigated for a wide range of temperature. The equilibrium Dühring (P-T-X_IL) and enthalpy (h-T-X_IL) of mixture were assessed using the excess Gibbs free non-random two liquid (NRTL) model for a temperature range of 20°C to 140°C and X_IL from 0.1 to 0.9. The performance validation of the ARS cycle showed a better coefficient of performance (COP) of 0.834 for H₂O-[mmim][DMP] in comparison to NH₃-H₂O, H₂O-LiBr, H₂O-[emim][DMP], and H₂O-[emim][BF4]. Further, ARS performances with various operating temperatures of the absorber (T_a), condenser (T_c), generator (T_g), and evaporator (T_e) were simulated and optimized for a maximum COP and exergetic COP (ECOP). The effects of T_g from 50°C to 150°C and T_a and T_c from 30°C to 50°C on COP and ECOP, the X_a, X_g, and circulation ratio (CR) of the ARS were evaluated and optimized for T_e from 5°C to 15°C. The optimization revealed that T_g needed to achieve a maximum COP which was more than that for a maximum ECOP. Therefore, this investigation provides criteria to select low grade heat source temperature. Most of the series flow of the cases of cooling water from the condenser to the absorber was found to be better than the absorber to the condenser.

Keywords ionic liquid driven absorption cycle H₂O-[mmim][DMP] coefficient of performance (COP) exergy analysis thermodynamics mixture property

Corresponding Author(s): Gorakshnath TAKALKAR,Ahmad K. SLEITI

Online First Date: 25 January 2021 Issue Date: 07 July 2022

Cite this article:

Gorakshnath TAKALKAR,Ahmad K. SLEITI. Comprehensive performance analysis and optimization of 1,3-dimethylimidazolylium dimethylphosphate-water binary mixture for a single effect absorption refrigeration system[J]. Front. Energy, 2022, 16(3): 521-535.

URL:

https://academic.hep.com.cn/fie/EN/10.1007/s11708-021-0720-9
https://academic.hep.com.cn/fie/EN/Y2022/V16/I3/521

Fig.1 Single effect absorption cycle with solution heat recovery exchanger.

Working mixture	$τ 0 12$	$τ 1 12$	$τ 0 21$	$τ 1 21$	α	ARD/%
H₂O(1)-[mmim][DMP](2)	1.73	177.6	–2.907	–484.6	0.279	1.44

Tab.1 Regressed NRTL model parameters of proposed H₂O-[mmim][DMP] mixture

Fig.2 Performance validation and comparison of single effect ARS.

Fig.3 Comparison and validation of COP variation with T_g of single effect ARS at T_e, T_c, and T_a = 10°C, 40°C, and 30°C.

Tab.2 Performance validation and comparison of single effect ARS

Tab.3 State properties of single effect ARS using proposed working pair H₂O-[mmim][DMP] for T_e,T_c, T_a and, T_g = 10°C/40°C/30°C/100°C at a constant refrigerant mass flowrate of 1 kg/s

Fig.4 Heat loads (kW) of an evaporator, generator, condenser, absorber, and recovery exchanger with H₂O-[mmim][DMP] mixture for input T_e, T_c, T_a, and T_g = 10°C, 40°C, 30°C, and 100°C.

Fig.5 Variation of excess Gibbs free energy (g^E) of H₂O-[mmim][DMP] mixture with the variation of mass fraction of (X_IL) at a constant temperature from 20°C to 140°C.

Fig.6 Variation of enthalpy of mixing of H₂O-[mmim][DMP] mixture with a mass fraction of absorbent at a temperature from 20°C to 140°C.

Fig.7 Dühring plot (P-T-X_IL) of H₂O-[mmim][DMP] binary mixture at a mass fraction of [mmim][DMP] from 0.1 to 0.9.

Fig.8 Variation of COP of H₂O-[mmim][DMP] based ARS with T_g at T_a = T_c = 30°C and T_e = 5°C, 7.5°C, 10°C, 12.5°C, and 15°C.

Fig.9 Variation of ECOP of H₂O-[mmim][DMP] operated ARS with T_g at a constant T_e of 5°C, 7.5°C, 10°C, 12.5°C, and 15°C.

Fig.10 Variation of circulation ratio of H₂O-[mmim][DMP] based single effect ARS with T_g at T_a = T_c = 30°C and T_e = 5°C, 7.5°C, 10°C, 12.5°C, and 15°C.

Fig.11 Effect of T_g.

Fig.12 Effect of parallel flow at T_a = T_c from 30°C to 50°C.

Fig.13 Variation of ARS performances for T_c of 30°C, 35°C, and 40°C and T_a = 30°C.

(a) COP; (b) ECOP.

Fig.14 Variation of ARS performances at a T_a of 30°C, 35°C, and 40°C and T_c = 30°C.

(a) COP; (b) ECOP.

Fig.15 Effect of T_c on COP and X_g at T_e = 5°C, 10°C, and 15°C and T_g = 80°C and 90°C and a constant T_a of 30°C.

(a) COP; (b) X_g.

Fig.16 Effect of T_a at a constant T_c = 30°C and T_e = 5°C, 10°C, and 15°C.

(a) COP; (b) X_a.

Tab.4 Optimum results of ARS with the utilization of low-grade heat based on various T_e,T_a, and T_c

$τ$	NRTL parameter
$γ 1$	Activity coefficient of water
$α$	Temperature independent NRTL model parameter
C_p	Specific heat capacity at constant pressure /(kJ·(kg·K)^–1)
g	Gibbs energy
h	Enthalpy/(kJ·kg^–1)
m	Mass flow rate/(kg·s^–1)
p₁	Partial pressure of H₂O/kPa
P	Total vapor pressure/kPa
$P 1 s a t$	Saturation pressure of H₂O
Q	Heat load/kW
R	Gas constant/(kJ·(kmol·K)^–1)
T	Temperature/°C
X_IL	Mass fraction of IL into a binary mixture
x₁	Mole fraction of H₂O into a binary mixture
1,2,3	State points
Subscript
a	Absorber
c	Condenser
E	Excess
e	Evaporator
g	Generator
max	Maximum
Acronym
ARS	Absorption refrigeration and cooling system
ARD	Average relative deviation
COP	Energetic coefficient of performance
CR	Mixture circulation ratio
ECOP	Exergetic coefficient of performance
LiBr	Lithium bromide
[mmim][DMP]	1,3-dimethylimidazolylium dimethylphosphate
[emim][DMP]	1-ethyl-3-methylimidazolium dimethyl phosphate
[emim][BF₄]	1-ethyl-3-methylimidazolium tetrafluoroborate

1	M S Fernandes, G J V N Brites, J J Costa, et al. Review and future trends of solar adsorption refrigeration systems. Renewable & Sustainable Energy Reviews, 2014, 39: 102–123 https://doi.org/10.1016/j.rser.2014.07.081
2	A K Sleiti. Tidal power technology review with potential applications in Gulf Stream. Renewable & Sustainable Energy Reviews, 2017, 69: 435–441 https://doi.org/10.1016/j.rser.2016.11.150
3	A K Sleiti, W A Al-Ammari, M Al-Khawaja. Review of innovative approaches of thermo-mechanical refrigeration systems using low grade heat. International Journal of Energy Research, 2020, 44(13): 9808–9838 https://doi.org/10.1002/er.5556
4	G Takalkar. Simulation and experimental study of heat based refrigeration cycles. Dissertation for the Doctoral Degree. India: Institute of Chemical Technology, 2013
5	A K Sleiti, W A Al-ammari, M Al-khawaja. A novel solar integrated distillation and cooling system – design and analysis. Solar Energy, 2020, 206: 68–83 https://doi.org/10.1016/j.solener.2020.05.107
6	I Sarbu, C Sebarchievici. Review of solar refrigeration and cooling systems. Energy and Buildings, 2013, 67: 286–297 https://doi.org/10.1016/j.enbuild.2013.08.022
7	M Shublaq, A K Sleiti. Experimental analysis of water evaporation losses in cooling towers using filters. Applied Thermal Engineering, 2020, 175: 115418 https://doi.org/10.1016/j.applthermaleng.2020.115418
8	Y Sun, G Di, J Wang, et al. Gaseous solubility and thermodynamic performance of absorption system using R1234yf/IL working pairs. Applied Thermal Engineering, 2020, 172: 115161 https://doi.org/10.1016/j.applthermaleng.2020.115161
9	D Perez-Astudillo, D Bachour. DNI, GHI and DHI ground measurements in Doha, Qatar. Energy Procedia, 2014, 49: 2398–2404 https://doi.org/10.1016/j.egypro.2014.03.254
10	D Bachour, D Perez-Astudillo. Ground-measurement GHI map for Qatar. Energy Procedia, 2014, 49: 2297–2302 https://doi.org/10.1016/j.egypro.2014.03.243
11	A I Papadopoulos, A S Kyriakides, P Seferlis, et al. Absorption refrigeration processes with organic working fluid mixtures—a review. Renewable & Sustainable Energy Reviews, 2019, 109: 239–270 https://doi.org/10.1016/j.rser.2019.04.016
12	D B Boman, D C Hoysall, M A Staedter, et al. A method for comparison of absorption heat pump working pairs. International Journal of Refrigeration, 2017, 77: 149–175 https://doi.org/10.1016/j.ijrefrig.2017.02.023
13	M B Shiflett, A Yokozeki. Solubility and diffusivity of hydrofluorocarbons in room-temperature ionic liquids. AIChE Journal, 2006, 52(3): 1205–1219 https://doi.org/10.1002/aic.10685
14	A Yokozeki, M B Shiflett. Ammonia solubilities in room temperatures ionic liquids. Industrial & Engineering Chemistry Research, 2007, 46: 1605–1610 https://doi.org/10.1021/ie061260d
15	M B Shiflett, A Yokozcki. Absorption cycle utilizing ionic liquids and water as working fluids. US patent: US-8715521-BZ, 2005
16	A Mehari, Z Y Xu, R Z Wang. Thermal energy storage using absorption cycle and system: a comprehensive review. Energy Conversion and Management, 2020, 206: 112482 https://doi.org/10.1016/j.enconman.2020.112482
17	P Parab, G Takalkar, S Bhagwat. Vapour liquid equilibrium of Potassium formate–water: measurements and correlation by e-NRTL model. Indian Chemical Engineer, 2019, 61(4): 361–373 https://doi.org/10.1080/00194506.2019.1581096
18	W Wu, T You, M Leung. Screening of novel water/ionic liquid working fluids for absorption thermal energy storage in cooling systems. International Journal of Energy Research, 2019, 44(12): 9367–9381 https://doi.org/10.1002/er.4939
19	G D Takalkar, R R Bhosale, N A Mali, et al. Thermodynamic analysis of EMISE–water as a working pair for absorption refrigeration system. Applied Thermal Engineering, 2019, 148: 787–795 https://doi.org/10.1016/j.applthermaleng.2018.11.092
20	X Liu, L Bai, S Liu, et al. Vapor-liquid equilibrium of R1234yf/[HMIM][Tf2N] and R1234ze(E)/[HMIM][Tf2N] working pairs for the absorption refrigeration cycle. Journal of Chemical & Engineering Data, 2016, 61(11): 3952–3957 https://doi.org/10.1021/acs.jced.6b00731
21	W Wu, H Zhang, T You, et al. Thermodynamic investigation and comparison of absorption cycles using hydrofluoroolefins and ionic liquid. Industrial & Engineering Chemistry Research, 2017, 56(35): 9906–9916 https://doi.org/10.1021/acs.iecr.7b02343
22	S Kim, P A Kohl. Theoretical and experimental investigation of an absorption refrigeration system using R134/[bmim][PF6] working fluid. Industrial & Engineering Chemistry Research, 2013, 52(37): 13459–13465 https://doi.org/10.1021/ie400985c
23	M B Shiflett, A Yokozeki. Solubility and diffusivity of hydrofluorocarbons in room-temperature ionic liquids. AIChE Journal, 2006, 52(3): 1205–1219 https://doi.org/10.1002/aic.10685
24	M Wang, C A Infante Ferreira. Absorption heat pump cycles with NH3 – ionic liquid working pairs. Applied Energy, 2017, 204: 819–830 https://doi.org/10.1016/j.apenergy.2017.07.074
25	W Chen, Y Bai. Thermal performance of an absorption-refrigeration system with [emim]Cu2Cl5/NH3 as working fluid. Energy, 2016, 112: 332–341 https://doi.org/10.1016/j.energy.2016.06.093
26	G D Takalkar, R R Bhosale, N A Mali, et al. Energetic and exergetic performance of NH3-H2O-based absorption refrigeration cycle: effect of operating factor. International Journal of Exergy, 2020, 31(4): 352 https://doi.org/10.1504/IJEX.2020.107192
27	B Zhang, W Chen, Q Sun, et al. Numerical evaluation of thermal performances of diffusion–absorption refrigeration using 1,3-dimethylimidazolylium dimethylphosphate/methanol/helium as working fluid. Energy Conversion and Management, 2017, 152: 201–213 https://doi.org/10.1016/j.enconman.2017.09.048
28	Z He, Z Zhao, X Zhang, et al. Thermodynamic properties of new heat pump working pairs: 1,3-dimethylimidazolium dimethylphosphate and water, ethanol and methanol. Fluid Phase Equilibria, 2010, 298(1): 83–91 https://doi.org/10.1016/j.fluid.2010.07.005
29	W Chen, S Liang. Thermodynamic analysis of absorption heat transformers using [mmim]DMP/H2O and [mmim]DMP/CH3OH as working fluids. Applied Thermal Engineering, 2016, 99: 846–856 https://doi.org/10.1016/j.applthermaleng.2016.01.135
30	D Zheng, L Dong, W Huang, et al. A review of imidazolium ionic liquids research and development towards working pair of absorption cycle. Renewable & Sustainable Energy Reviews, 2014, 37: 47–68 https://doi.org/10.1016/j.rser.2014.04.046
31	S Popp, A Bösmann, R Wölfel, et al. Screening of ionic liquid/H2O working pairs for application in low temperature driven sorption heat pump systems. ACS Sustainable Chemistry & Engineering, 2015, 3(4): 750–757 https://doi.org/10.1021/acssuschemeng.5b00062
32	M Wang, T M Becker, C A Infante Ferreira. Assessment of vapor–liquid equilibrium models for ionic liquid based working pairs in absorption cycles. International Journal of Refrigeration, 2018, 87: 10–25 https://doi.org/10.1016/j.ijrefrig.2017.09.021
33	S Kim, P A Kohl. Analysis of [hmim][PF6] and [hmim][Tf2N] ionic liquids as absorbents for an absorption refrigeration system. International Journal of Refrigeration, 2014, 48: 105–113 https://doi.org/10.1016/j.ijrefrig.2014.09.003
34	I Sujatha, G Venkatarathnam. Performance of a vapour absorption heat transformer operating with ionic liquids and ammonia. Energy, 2017, 141: 924–936 https://doi.org/10.1016/j.energy.2017.10.002
35	W Chen, C Xu, H Wu, et al. Energy and exergy analyses of a novel hybrid system consisting of a phosphoric acid fuel cell and a triple-effect compression–absorption refrigerator with [mmim]DMP/CH3OH as working fluid. Energy, 2020, 195: 116951 https://doi.org/10.1016/j.energy.2020.116951
36	W Wu, M Leung, Z Ding, et al. Comparative analysis of conventional and low-GWP refrigerants with ionic liquid used for compression-assisted absorption cooling cycles. Applied Thermal Engineering, 2020, 172: 115145 https://doi.org/10.1016/j.applthermaleng.2020.115145
37	L Dong, D Zheng, N Nie, et al. Performance prediction of absorption refrigeration cycle based on the measurements of vapor pressure and heat capacity of H2O+[DMIM]DMP system. Applied Energy, 2012, 98: 326–332 https://doi.org/10.1016/j.apenergy.2012.03.044
38	S Anand, A Gupta, S K Tyagi, et al. An absorption chiller system using lithium bromide and water as working fluids: exergy analysis. ASHRAE Transactions, 2014, 120: 226–239
39	Y J Kim, M Gonzalez. Exergy analysis of an ionic-liquid absorption refrigeration system utilizing waste-heat from datacenters. International Journal of Refrigeration, 2014, 48: 26–37 https://doi.org/10.1016/j.ijrefrig.2014.08.008
40	D S Ayou, M R Currás, D Salavera, et al. Performance analysis of absorption heat transformer cycles using ionic liquids based on imidazolium cation as absorbents with 2,2,2-trifluoroethanol as refrigerant. Energy Conversion and Management, 2014, 84: 512–523 https://doi.org/10.1016/j.enconman.2014.04.077
41	S K Swarnkar, S Srinivasa Murthy, et al. Performance of a vapour absorption refrigeration system operating with ionic liquid-ammonia combination with water as cosolvent. Applied Thermal Engineering, 2014, 72(2): 250–257 https://doi.org/10.1016/j.applthermaleng.2014.06.020
42	W Wagner, A Pruß. The IAPWS formulation 1995 for the thermodynamic properties of ordinary water substance for general and scientific use. Journal of Physical and Chemical Reference Data, 2002, 31(2): 387 https://doi.org/10.1063/1.1461829
43	E S Abumandour, F Mutelet, D Alonso. Performance of an absorption heat transformer using new working binary systems composed of {ionic liquid and water}. Applied Thermal Engineering, 2016, 94: 579–589 https://doi.org/10.1016/j.applthermaleng.2015.10.107
44	M Kamali, K Parham, M Assadi. Performance analysis of a single stage absorption heat transformer-based desalination system employing a new working pair of (EMIM) (DMP)/H2O. International Journal of Energy Research, 2018, 42(15): 4790–4804 https://doi.org/10.1002/er.4235
45	A Yokozeki. Theoretical performances of various refrigerant-absorbent pairs in a vapor-absorption refrigeration cycle by the use of equations of state. Applied Energy, 2005, 80(4): 383–399 https://doi.org/10.1016/j.apenergy.2004.04.011
46	M B Shiflett, A Yokozeki. Absorption cycle utilizing ionic liquids and water as working fluids. US Patent Application 20070144186, 2006
47	G Takalkar. Thermodynamic properties and performance evaluation of [EMIM] [DMP]-H2O working pair for absorption cooling cycle. International Journal of Energy Research, 2019,44(15): 12269–12283 https://doi.org/10.1002/er.5108

[1]	Min XU, Jun CAI, Xiulan HUAI. Exergy analysis and performance enhancement of isopropanol-acetone-hydrogen chemical heat pump[J]. Front. Energy, 2017, 11(4): 510-515.
[2]	S. NIKBAKHT NASERABAD,K. MOBINI,A. MEHRPANAHI,M. R. ALIGOODARZ. Exergy-energy analysis of full repowering of a steam power plant[J]. Front. Energy, 2015, 9(1): 54-67.

Viewed

Full text

Abstract

Cited

Shared

Discussed