Patent ID: 9732264
Date: 2017-08-15
CPC Classifications: C09K,F28D,Y02E

Claim:
1. A heat storage material composition comprising: sodium acetate; water; and an organic compound comprising a hydrophobic group and a hydrophilic group that is selected from the group consisting of methanol, ethanol, 1-propanol, 2-propanol, n-butyl alcohol, and tert-butyl alcohol, wherein a concentration Ws is a concentration of the sodium acetate, wherein a concentration Wa is a concentration of the organic compound comprising a hydrophobic group and a hydrophilic group, wherein a concentration Ww is a concentration of the water, wherein, when the organic compound is methanol, the heat storage material composition has a weight ratio R of the sodium acetate to the water is 55/45 or more and 57/43 or less, the concentration Ws is 52% by weight or more, and the concentration Wa is 1% by weight or more, wherein, when the organic compound is ethanol, the heat storage material composition is derivable from a triangular diagram that shows a composition of the sodium acetate, the water, and the ethanol in units of weight percent, the heat storage material composition being defined by a region surrounded by lines connecting three points, where wherein, when the organic compound is 1-propanol, the heat storage material composition has a weight ratio R of the sodium acetate to the water is 57/43 or less, the concentration Ws is 52% by weight or more, and the concentration Wa of the 1-propanol is 1% by weight or more, wherein, when the organic compound is 2-propanol, the heat storage material composition has a weight ratio R of the sodium acetate to the water is 55/45 or less, the concentration Ws is 52% by weight or more, and the concentration Wa of the 2-propanol is 2% by weight or more, wherein, when the organic compound is n-butyl alcohol, in a triangular diagram that shows a composition of the sodium acetate, the water, and the n-butyl alcohol in units of weight percent, the concentration Wa of the n-butyl alcohol is equal to or more than a concentration represented by a straight line connecting a first point A and a second point B, where the concentration Ws is 52% by weight or more, and the weight ratio R of the sodium acetate to the water is 57/43 or less, and wherein, when the organic compound is tert-butyl alcohol, the heat storage material composition has a weight ratio R of the sodium acetate to the water is 55/45 or more and 57/43 or less, the concentration Ws is 52% by weight or more, and the concentration Wa of the tert-butyl alcohol is 2% by weight or more.