Investigation on innovative thermal conductive composite strontium chloride for ammonia sorption refrigeration = Enquête sur l'utilisation de chlorure de strontium composite conducteur thermique innovant pour les machines de refroidissement à sorption à l'ammoniac

Jiang, L., Wang, R.Z., Lu, Y.J. , Roskilly, A.P., Wang, L.W. and Tang, K. (2018) Investigation on innovative thermal conductive composite strontium chloride for ammonia sorption refrigeration = Enquête sur l'utilisation de chlorure de strontium composite conducteur thermique innovant pour les machines de refroidissement à sorption à l'ammoniac. International Journal of Refrigeration, 85, pp. 157-166. (doi: 10.1016/j.ijrefrig.2017.09.020)

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Abstract

A novel composite strontium chloride (SrCl2) is developed with porous material of expanded natural graphite (ENG) and nanoparticle of carbon coated nickel (Ni@C) as the additives. Thermo-physical properties such as thermal diffusivity, thermal conductivity and permeability are investigated and analyzed. The highest thermal diffusivity could reach 6.2 mm2⋅s−1. Correspondingly the highest thermal conductivity is 4.03 W ⋅ m−1 ⋅ K−1, which is about 20 times higher than that of granular SrCl2. Permeability of novel composite SrCl2 ranges from 1.31 × 10−9 m2 to 1.07 × 10−13 m2. Moreover, samples with Ni@C have better sorption performance in ammonia than those without Ni@C due to the improved heat and mass transfer performance. Ammonia sorption quantities of novel composite SrCl2 range from 0.39 kg⋅kg−1 to 0.67 kg⋅kg−1 when evaporation temperature varies from −15 °C to 15 °C. The addition of ENG and Ni@C shows great potentials for sorption refrigeration by adjusting the concentration swing.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Lu, Dr Yiji
Authors: Jiang, L., Wang, R.Z., Lu, Y.J., Roskilly, A.P., Wang, L.W., and Tang, K.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:International Journal of Refrigeration
Publisher:Elsevier
ISSN:0140-7007
ISSN (Online):1879-2081
Published Online:05 October 2017

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