Toho Gas Co., Ltd.

Ngk Insulators, Inc.

Takashi Ina

Kohei Nakamura

Toshiyuki Nakamura

Nobuhiko Mori

Osamu Sakai

Koichi Katsurayama

Koki Hamada

A latent-heat storage material composition includes: a latent-heat storage material for storing or releasing heat by utilizing absorption or release of latent heat in association with phase change; and additives mixed with the latent-heat storage material. The additives can adjust a property of the latent-heat storage material. The additives include a first additive, which is a water-soluble substance belonging to polysaccharides and is gellan gum, which is also a thickener for increasing the viscosity of a melt of the latent-heat storage material composition in a liquid phase state, based on interaction of the thickener with water contained in the latent-heat storage material composition and cations. The content of the gellan gum is 1 wt % or less of the weight of the whole latent-heat storage material composition.

Latent-heat storage material composition and latent-heat storage tank

In a latent heat storage material composition prepared by mixture of a latent heat storage material with an additive that adjusts the physical properties of the latent heat storage material, the latent heat storage material includes an inorganic salt hydrate containing nw (2&#x2264;nw) molecules of hydration water. The additive is a melting point modifier for adjusting the melting point of the latent heat storage material and is a substance belonging to a sugar alcohol, and is a substance having the physical property of producing negative dissolution heat upon dissolution in hydration water contained in the latent heat storage material. In a whole amount of the latent heat storage material composition, the substance belonging to a sugar alcohol has a concentration that satisfies formulae (1) and (2) per 1 mole of water of hydration of the latent heat storage material. Formula (2): 0.01&#x2264;xs&#x2264;1.

Latent heat storage material composition

There is disclosed a permselective membrane reactor which efficiently forms hydrogen by use of a water-gas shift reaction and which is excellent in an aspect of manufacturing cost. In a permselective membrane reactor, a permselective membrane is a Pd membrane or a Pd alloy membrane, and a catalyst layer includes a first catalyst layer on the side of the permselective membrane and a second catalyst layer disposed apart from the permselective membrane. The first catalyst layer has a noble metal-based catalyst, and the second catalyst layer has an iron-based catalyst.

Permselective membrane type reactor

Growing community of inventors

Nagoya, Japan

Takashi Ina