TY - JOUR
T1 - Combined effects of composite thermal energy storage and magnetic field to enhance productivity in solar desalination
AU - Dsilva Winfred Rufuss, D.
AU - Arulvel, S.
AU - Anil Kumar, V.
AU - Davies, P.A.
AU - Arunkumar, T.
AU - Sathyamurthy, Ravishankar
AU - Kabeel, A.e.
AU - Anand Vishwanath, M.
AU - Sai Charan Reddy, D.
AU - Dutta, Amandeep
AU - Agrawal, Mayank
AU - Vilas Hiwarkar, Vedant
PY - 2021/7/27
Y1 - 2021/7/27
N2 - The conventional solar still is limited to a daily yield of approximately 2–3.5 kg/m2/day. To increase the yield, this study investigates experimentally the combined effects of latent and sensible energy storage together with magnetization. Paraffin and novel high-thermal conductivity nanomaterial (graphite plate) were used as latent and sensible heat storage materials, respectively. There was an overall increase of 62% and 235% in the daytime and night-time yield, respectively, giving a total yield of 5.5 kg/m2/day compared to 3.4 kg/m2/day for a conventional still. Enviro-economic parameters like emissions, CO2 mitigation and carbon credit (CC) earned were also investigated. Energy matrices analysis and water quality checks were performed to estimate the energy-payback time, life cycle conversion efficiency (LCCE) and purity of desalinated water. The cost per liter of freshwater was found to be 3.7% cheaper than for a conventional still and 69% cheaper than bottled water in India. Over a 30 year period, 40.3 Tonnes of CO2 will be mitigated contributing a CC and LCCE of $402 and 0.52, respectively. The proposed modified still is recommended as a substitute for conventional stills and stills with simple energy storage.
AB - The conventional solar still is limited to a daily yield of approximately 2–3.5 kg/m2/day. To increase the yield, this study investigates experimentally the combined effects of latent and sensible energy storage together with magnetization. Paraffin and novel high-thermal conductivity nanomaterial (graphite plate) were used as latent and sensible heat storage materials, respectively. There was an overall increase of 62% and 235% in the daytime and night-time yield, respectively, giving a total yield of 5.5 kg/m2/day compared to 3.4 kg/m2/day for a conventional still. Enviro-economic parameters like emissions, CO2 mitigation and carbon credit (CC) earned were also investigated. Energy matrices analysis and water quality checks were performed to estimate the energy-payback time, life cycle conversion efficiency (LCCE) and purity of desalinated water. The cost per liter of freshwater was found to be 3.7% cheaper than for a conventional still and 69% cheaper than bottled water in India. Over a 30 year period, 40.3 Tonnes of CO2 will be mitigated contributing a CC and LCCE of $402 and 0.52, respectively. The proposed modified still is recommended as a substitute for conventional stills and stills with simple energy storage.
KW - Composite thermal energy storage
KW - Ferrite magnets
KW - Graphite plate-paraffin
KW - Modified still
KW - Productivity
KW - Techno-enviro-economical
UR - http://www.scopus.com/inward/record.url?scp=85115205050&partnerID=8YFLogxK
U2 - 10.1016/j.renene.2021.07.124
DO - 10.1016/j.renene.2021.07.124
M3 - Article
SN - 0960-1481
VL - 181
SP - 219
EP - 234
JO - Renewable Energy
JF - Renewable Energy
ER -