Hani Najm  Obaid, Majeed Ali  Habeeb, Farhan Lafta  Rashid, Ahmed  Hashim, 
    Thermal Energy Storage by Nanofluids,
    Journal of Engineering and Applied Sciences,
    Volume 8,Issue 5,
    2013,
    Pages 143-145,
    ISSN 1816-949x,
    jeasci.2013.143.145,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2013.143.145)
    Abstract: Nanofluids are suspensions of nanoparticles in base fluids, 
  a new challenge for thermal sciences provided by nanotechnology. Nanofluids 
  have unique features different from conventional solid-liquid mixtures in which 
  mm or μm sized particles of metals and non-metals are dispersed. At this 
  research, adding of small weight percent of magnesium oxide (MgO) (0.1, 0.2, 
  0.4 and 0.5 wt.%) to pure water as working fluid in the building heating system 
  by solar energy gave us different behavior, adding 0.1, 0.2 wt.%, gave low temperature 
  gradient than the pure water while 0.4 and 0.5 wt.%, gave greater temperature 
  gradient than pure water which is desired.
    Keywords: Nanomaterials;nanofluids;thermal energy;energy storage;Iraq