ABSTRACT
The present study investigated the enhancement of energy conservation under the principles of pure substances that exercise phase change throughout charging and discharging processes. This work primarily focused on the thermal energy storage system, where the working medium charges the PCM namely (paraffin wax and stearic acid) that is normally encapsulated in spherical balls. The potentiality in charging of working medium was examined upon blending heat transfer fluid with four nanoparticles (Al2O3, CuO, TiO2, and MgO). Several volume concentration levels (0.2%, 0.5%, and 0.8%) were considered for afore mentioned nanoparticles under the influence of assumed flow rates (2, 4, and 6 L per minute). The experi-ments were carried out with various nanofluids used as heat transfer fluid for dif-ferent flow rates and volume concentrations. The results showed that there is a considerable amount of reduction in charging time, in case of 6 L per minute, 0.8% volume concentration and PCM as paraffin wax, around 27.22% for TiO2 nanofluid, 36.66% for Al2O3 nanofluid, 40.90% for CuO nanofluid, and 63.63% for MgO nanofluid, and PCM used as stearic acid, around 26.31% for TiO2 nanofluid, 42.10% for Al2O3 nanofluid, 47.36% for CuO nanofluid, and 68.42% for MgO nanofluid, when compared with water as the conventional heat transfer fluid. From the results, it was observed that the effect of particle concentration played an important role in the heat transfer process. During the discharging pro-cess, 210 L of hot water withdrawn with paraffin wax used as PCM and 198 L of hot water withdrawn with stearic acid used as PCM.
KEYWORDS
PAPER SUBMITTED: 2019-10-04
PAPER REVISED: 2020-01-10
PAPER ACCEPTED: 2020-01-20
PUBLISHED ONLINE: 2020-02-08
THERMAL SCIENCE YEAR
2021, VOLUME
25, ISSUE
Issue 1, PAGES [643 - 652]
- Naveen Kumar, G., and Subrata Kumar Ghosh, Thermo Physical Properties of Nanofluids, International Journal of Innovative Technology and Exploring Engineering, 8 (2019), 11, pp.1616-1620
- Nagappan, B., et al., Heat transfer enhancement of a cascaded thermal energy storage system with various Encapsulation Arrangements, Thermal Science, 23(2019), 2A, pp. 823-833
- Sankar, P., et al., Performance analysis of PCM based thermal energy storage system containing nanoparticles, International Research Journal of Engineering and Technology, 5(2018), 4, pp.285-290
- Lokesh, S., et al., Melting/Solidification characteristics of paraffin based nanocomposite for thermal energy storage applications, Thermal Science, 21(2017), 6, pp. 2517-2524
- Prakasam., M.J.S., et al., An Experimental Study of the mass flow rates effect on Flat Plate Solar Water Heater Performance using Al2O3/Water nanofluid, Thermal Science,21 (2017), 2, pp. S379-S388
- Abdollahzadeh Jamalabadi, M.Y., and Jae Hyun Park, Effects of Brownian Motion on Freezing of PCM Containing Nanoparticles, Thermal Science, 20 (2016), 5, pp.1533-1541
- Yang, Liu, and Yuhan Hu., Toward TiO2 nanofluids—Part 2: applications and challenges, Nanoscale research letters 12, 1 (2017): 446
- Yang, J., et al., Experimental study on enhancement of thermal energy storage with phase change material, Applied Energy, 169(2016), pp. 164-176
- Reddigari, M.R., et al., Thermal energy storage system using phase change materials: constant heat source, Thermal science, 16 (2012), 4, pp.1097-1104
- Kumaresan, V., and Velraj, R., Experimental investigation of the thermo-physical properties of water-ethylene glycol mixture based CNT nanofluids, Thermochimica Acta, 545 (2012), pp. 180-186
- Mahbubul, I.M., et al., Experimental investigation on effect of ultrasonication duration on colloidal dispersion and thermo physical properties of alumina-water nanofluid, International Journal of Heat and Mass Transfer, 88(2015), pp. 73-81
- Abdul Hamid, K., et al.,Thermal conductivity enhancement of TiO2 nanofluid in water and ethylene glycol (EG) mixture, Indian Journal of Pure & Applied Physics, 54, (2016),10,pp. 651-655
- Kailash Nemade, et al., Thermal conductivity enhancement in Zinc Oxide -Water based nanofluid system, Research Journal of Chemical Sciences, 6(2016), 8, pp.43-45
- Harikrishnan,S., et al., Preparation and thermal energy storage behaviour of stearic acid-TiO2 nanofluids as a phase change material for solar heating systems, Thermochimica Acta, 565(2013), pp.137-145
- Abdollahzadeh, M., and Esmaeilpour, M, Enhancement of phase change material (PCM) based latent heat storage system with nano fluid and wavy surface, International journal of heat and mass transfer, 80 (2015), pp. 376-385
- Anderson, R., et al., Experimental results and Modelling of energy storage and recovery in a packed bed of alumina Particles, Applied Energy, 119(2014), pp. 521-529
- Al-Azawii, et al., Experimental study on the cyclic behavior of thermal energy storage in an air-alumina packed bed, Journal of Energy Storage,18 (2018), pp. 239-249
- Minea, A. A., and Moldoveanu, M. G., Studies on Al2O3, CuO, and TiO2 water-based nanofluids: a comparative approach in laminar and turbulent flow, Journal of engineering thermo physics,26 (2017), pp. 291-301
- Hani Najm Obaid, et al., Thermal Energy Storage by Nanofluids, Journal of Engineering and Applied Sciences, 8(2013), pp.143- 145
- Arasu, et al., Numerical performance study of paraffin wax dispersed with alumina in a concentric pipe latent heat storage system, Thermal science, 17 (2013), 2, pp. 419-430
- Menlik, et al., Heat transfer enhancement using MgO/water nanofluid in heat pipe, Journal of the Energy Institute, 88 (2015), 3, pp. 247-257
- Rashid, et al., Novel Phase Change Materials, MgO Nanoparticles, and water based nanofluids for thermal energy storage and biomedical applications, International Journal of Pharmaceutical and Phytopharmacological Research, 8(2018),1, pp.46-56
- Khan, et al., Nanoparticles: Properties, applications and toxicities, Arabian Journal of Chemistry, 12 (2019), pp. 908-931
- Gupta, et al., Investigations for effect of Al2O3-H2O nanofluid flow rate on the efficiency of direct absorption solar collector, Case Studies in Thermal Engineering, 5 (2015), pp.70-78
- Cobanoglu, et al., Carbon-based Nanofluid Applications in Solar Thermal Energy, In E3S Web of Conferences, 111(2019), EDP Sciences
- Turkyilmazoglu, M., Performance of direct absorption solar collector with nanofluid mixture, Energy Conversion and Management, 114 (2016), pp. 1-10.
- Muthoka, et al., Study on Thermo physical Properties of Nanofluid Based Composite Phase Change Material for Low Temperature Application, Energy Procedia,142 (2017), pp.3313-3319.
- Addad, Y., et al., Effects of nanofluids on the performance of a PCM-based thermal energy storage system, Journal of Energy Engineering, 143(2017), 4: 04017006
- Prasanth, B., et al., Experimental study of latent heat thermal storage system using mixed nano particles with PCM, International Journal of Engineering, Science and Mathematics,7,(2018),4, pp.455-469
- Grosu, et al., Preparation and characterization of nanofluids based on molten salts with enhanced thermo physical properties for thermal energy storage at concentrate solar power, In AIP Conference Proceedings, 2126(2019), 1, p. 200021, AIP Publishing
- Moffat, and Robert J., Using uncertainty analysis in the planning of an experiment, (1985), pp. 173-178