Nanomaterials for efficiently lowering the freezing point of anti-freeze coolants

In this paper, we report, for the first time, the effect of the lowered freezing point in a 50% water/50% anti-freeze coolant (PAC) or 50% water/50% ethylene glycol (EG) solution by the addition of carbon nanotubes and other particles. The experimental results indicated that the nano materials are m...

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Bibliographic Details
Published inJournal of nanoscience and nanotechnology Vol. 7; no. 9; p. 3180
Main Authors Hong, Haiping, Zheng, Yingsong, Roy, Walter
Format Journal Article
LanguageEnglish
Published United States 01.09.2007
Subjects
Electrochemistry
Ethylene Glycol - chemistry
Freezing
Hydrogen-Ion Concentration
Manufactured Materials
Microfluidics
Nanoparticles - chemistry
Nanostructures
Nanotechnology - methods
Nanotubes, Carbon - chemistry
Oxides - chemistry
Salts - chemistry
Sodium Chloride - chemistry
Temperature
Transition Temperature
Water - chemistry
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Summary:In this paper, we report, for the first time, the effect of the lowered freezing point in a 50% water/50% anti-freeze coolant (PAC) or 50% water/50% ethylene glycol (EG) solution by the addition of carbon nanotubes and other particles. The experimental results indicated that the nano materials are much more efficient (hundreds fold) in lowering the freezing point than the regular ionic materials (e.g., NaCl). The possible explanation for this interesting phenomenon is the colligative property of fluid and relative small size of nano material. It is quite certain that the carbon nanotubes and metal oxide nano particles could be a wonderful candidate for the nano coolant application because they could not only increase the thermal conductivity, but also efficiently lower the freezing point of traditional coolants.
ISSN:1533-4880
DOI:10.1166/jnn.2007.662