Open Access Open Access  Restricted Access Subscription or Fee Access

VACUUM ASSISTED ABSORPTION CHILLER. PART I: MODELING AND SIMULATION

Carlos Armenta-Déu

Abstract


A new absorption chiller assisted by a vacuum device has been simulated and characterized through a simulation process. Simulation has been developed for a range of 0.75-10 bars for the evaporation process with a constant ratio between the condensation and evaporation pressure of 10. Simulation has predicted a great improvement of the COP of the absorption chiller when operating at evaporation pressures under atmospheric level, with values of 6.844 for a moderate vacuum of 0.1 bar. Simulated COP evolution follows a potential law within 97.6% accuracy, thus allowing the user to predict the real COP at a large pressure interval. The results of the simulation have shown that for a single stage configuration, the ammonia/water chiller works better than the equivalent system of water/lithium-bromide when operating at low pressure and temperature at the evaporator, with a relative gain of 26%. The simulated configuration for a two stage configuration has also revealed a relative gain of 15.4% compared to the water/lithium-bromide system. The simulation process predicts that below 0.35 bar for the evaporation process, the absorption chiller shows higher COP than a compression system.

Keywords


AAbsorption chiller. Vacuum device. COP improvement.

Full Text:

PDF

References


X.Q.Zhai ,Yue Li, R.Z.Wang (2011) A review for research and new design options of solar absorption cooling systems, Renewable and Sustainable Energy Reviews, Volume 15, Issue 9, Pages 4416-4423

Ursula Eicker, Dirk Pietruschka (2009) Design and performance of solar powered absorption cooling systems in office buildings, Energy and Buildings, Volume 41, Issue 1, Pages 81-91

G.Ali Mansoori, Vinod Patel (1979) Thermodynamic basis for the choice of working fluids for solar absorption cooling systems, Solar Energy, Volume 22, Issue 6, Pages 483-491

Y. Agrouaz, T. Bouhal, A. Allouhi, T. Kousksou, A. Jamil, Y. Zeraouli (2017) Energy and parametric analysis of solar absorption cooling systems in various Moroccan climates, Case Studies in Thermal Engineering, Volume 9, Pages 28-39

A. Al-Alili, M.D. Islam, I. Kubo, Y. Hwang, R. Radermacher (2012) Modeling of a solar powered absorption cycle for Abu Dhabi, Applied Energy, Volume 93, Pages 160-167

T. Tsoutsos, E. Aloumpi, Z. Gkouskos, M. Karagiorgas (2010) Design of a solar absorption cooling system in a Greek hospital, Energy and Buildings, Volume 42, Issue 2, Pages 265-272

Jean Philippe Praene, Olivier Marc, Franck Lucas, Frédéric Miranville (2011) Simulation and experimental investigation of solar absorption cooling system in Reunion Island, Applied Energy, Volume 88, Issue 3, Pages 831-839

K.F. Fong, C.K. Lee, T.T. Chow (2012) Comparative study of solar cooling systems with building-integrated solar collectors for use in sub-tropical regions like Hong Kong, Applied Energy, Volume 90, Issue 1, Pages 189-195

V. Mittal, K.S. Kasana, N.S. Thakur (2006) Modelling and simulation of a solar absorption cooling system for India, Journal of Energy in Southern Africa, Vol. 17 No. 3

T. Sokhansefat, D. Mohammadi, A. Kasaeian, A.R. Mahmoudi (2017) Simulation and parametric study of a 5-ton solar absorption cooling system in Tehran, Energy Conversion and Management, Volume 148, Pages 339-351

C. Monné, S. Alonso, F. Palacín, L. Serra (2011) Monitoring and simulation of an existing solar powered absorption cooling system in Zaragoza (Spain), Applied Thermal Engineering, Volume 31, Issue 1, Pages 28-35

Y. Agrouaz, T. Bouhal, A. Allouhi, T. Kousksou, A. Jamil, Y. Zeraouli (2017) Energy and parametric analysis of solar absorption cooling systems in various Moroccan climates, Case Studies in Thermal Engineering, Volume 9, Pages 28-39

Moncef Balghouthi, Mohamed Hachemi Chahbani, Amenallah Guizani (2005) Solar Powered air conditioning as a solution to reduce environmental pollution in Tunisia, Desalination, Volume 185, Issues 1–3, Pages 105-110

Berhane H.Gebreslassie, Gonzalo Guillén-Gosálbez, Laureano Jiménez, Dieter Boer (2012) Solar assisted absorption cooling cycles for reduction of global warming: A multi-objective optimization approach, Solar Energy, Volume 86, Issue 7, Pages 2083-2094

Rafał Figaj, Mateusz Szubel, Estera Przenzak, Mariusz Filipowicz (2019) Feasibility of a small-scale hybrid dish/flat-plate solar collector system as a heat source for an absorption cooling unit, Applied Thermal Engineering, Volume 163, 25 114399

Jiangjiang Wang, Rujing Yan, Zhuang Wang, Xutao Zhang, Guohua Shi (2018) Thermal Performance Analysis of an Absorption Cooling System Based on Parabolic Trough Solar Collectors, Energies 2018, 11(10), 2679

F.J. Cabrera, A. Fernández-García, R.M.P. Silva, M.Pérez-García (2013) Use of parabolic trough solar collectors for solar refrigeration and air-conditioning applications, Renewable and Sustainable Energy Reviews, Volume 20, Pages 103-118

X.Q. Zhai, M. Qu, Yue Li, R.Z. Wang (2011) A review for research and new design options of solar absorption cooling systems, Renewable and Sustainable Energy Reviews, Volume 15, Issue 9, Pages 4416-4423

Boonrit Prasartkaew, S. Kumar (2010) A low carbon cooling system using renewable energy resources and technologies, Energy and Buildings, Volume 42, Issue 9, Pages 1453-1462

Roopesh Pushpala, Biomass for Cooling System Technologies: A Feasibility Guide, Center for Urban and Regional Affairs (CURA), University of Minnesota Twin Cities (2016)

Boonrit Prasartkaew, S. Kumar (2011) The Quasi-steady State Performance of a Solar-Biomass Hybrid Cooling System, The Second TSME International Conference on Mechanical Engineering 19-21 October, 2011, Krabi

Pedro Henrique da Silva Morais, Andressa Lodi, Adriana Cristine Aoki, Marcelo Modesto (2020) Energy, exergetic and economic analyses of a combined solar-biomass-ORC cooling cogeneration systems for a Brazilian small plant, Renewable Energy, Volume 157, Pages 1131-1147

Fei Xie, Heyun Liu, Xiaosong Gu, Pengcheng Li, Weizhi Chen, Peng Ling (2017) Matching Suitability of Solar-Biomass Hybrid Absorption Cooling System for Ecological Restaurants in Different Regions, Procedia Engineering, Volume 205, Pages 672-679

M. Edwin, S. Joseph Sekhar, Advanced Materials Research (Volumes 984-985), Pages: 719-724, Edited by:P.M. Diaz, K. Palanikumar and Puli Ravi Kumar (2014)

P. L. Spath, M. K. Mann (2004). Biomass power and conventional fossil systems with and without CO2 sequestration-comparing the energy balance, greenhouse gas emissions and economics (No. NREL/TP-510-32575). EERE Publication and Product Library

F. Cherubini, G. P. Peters, T. Berntsen, A.H. Strømman, E. Hertwich (2011). CO2 emissions from biomass combustion for bioenergy: atmospheric decay and contribution to global warming. Gcb Bioenergy, 3(5), Pages 413-426

B. Schlamadinger, J. Spitzer, G.H. Kohlmaier, M. Lüdeke (1995). Carbon balance of bioenergy from logging residues. Biomass and bioenergy, 8(4), Pages 221-234

K. Damen, A. Faaij (2006). A greenhouse gas balance of two existing international biomass import chains. Mitigation and adaptation strategies for global change, 11(5-6), Pages 1023-1050

G. Di Vita, M. Pilato, B. Pecorino, F. Brun, M. D’Amico (2017). A review of the role of vegetal ecosystems in CO2 capture. Sustainability, 9(10), Page 1840

C. B. Field, (2001). Plant physiology of the “missing” carbon sink. Plant Physiology, 125(1), Pages 25-28

D. Y. Goswami, F. Xu, (1999). Analysis of a new thermodynamic cycle for combined power and cooling using low and mid temperature solar collectors

G. Tamm, D. Y. Goswami, S. Lu, A.A. Hasan (2004). Theoretical and experimental investigation of an ammonia–water power and refrigeration thermodynamic cycle. Solar Energy, 76(1-3), Pages 217-228

C. Martin, D. Y. Goswami, (2006). Effectiveness of cooling production with a combined power and cooling thermodynamic cycle. Applied Thermal Engineering, 26(5-6), Pages 576-582

G. Tamm, D. Y. Goswami, S. Lu, A.A. Hasan (2003). Novel combined power and cooling thermodynamic cycle for low temperature heat sources, part I: theoretical investigation. J. Sol. Energy Eng., 125(2), Pages 218-222

G. Tamm, D. Y. Goswami (2003). Novel combined power and cooling thermodynamic cycle for low temperature heat sources, part II: experimental investigation. J. Sol. Energy Eng., 125(2), Pages 223-229

S.M. Sadrameli, D. Y. Goswami, (2007). Optimum operating conditions for a combined power and cooling thermodynamic cycle. Applied energy, 84(3), 254-265

G. S. Yadav, B. K. Singh, (2016). Study on water jet machining and its future trends. Int J Recent Res Asp, 3(2), Pages 50-54.

R. S. Kumar, A. Mani, S. Kumaraswamy (2005). Analysis of a jet-pump-assisted vacuum desalination system using power plant waste heat. Desalination, 179(1-3), Pages 345-354.

Gary Wayne Mannix, Water Jet Vacuum Refrigeration, Doctoral Thesis, Montana Tech. of the University of Montana, Proquest Dissertation Publishing, 1974

Analysis of the solar absorption refrigeration systems. Graduation Thesis. http://bibing.us.es/proyectos/abreproy/5070/fichero/CAPITULO+3%252FCAP%C3%8DTULO+3.0+MAQUINAS+DE+ABSORCION.pdf [Accessed on November, 15th, 2021)

Absorption Chillers for Systems. Combined Heat and Power Technology. Fact Sheet Series. Energy Efficiency and Renewable Energy. US. Department of Energy, DOE-EE 1608, May 2017




DOI: https://doi.org/10.37591/jorachv.v8i3.1202

Refbacks

  • There are currently no refbacks.