JPH06234984A - Carbonized rice hull for use infrared irradiation and heat absorption - Google Patents

Abstract

PURPOSE:To obtain carbonized rice hulls which have a high infrared irradiation efficiency and are repeatedly usable by carbonizing rice hulls by incomplete combustion and heating the carbonized hulls under specific conditions. CONSTITUTION:Rice hulls are carbonized by incomplete combustion and are then heated directly or indirectly at 300 deg.C or lower. Preferably, an improved heat absorption efficiency and higher heat-retaining properties are attained.

Description

[Detailed Description of the Invention] After burning the fir shell, if I put sweet potatoes in the afterglow, I have experienced that the core can be baked well. I wonder if this can be used somehow. Thinking about carbonizing the fir shell, I tried an experiment. (1) The fir shell was made by putting a fir shell in a pot and putting a lid on it and then heating it from the bottom and incompletely burning it until there was no soot emission. Put the wire mesh on the charcoal, and put the bread on it and baked it 1. After baking 2 without fir shell charcoal for 4 minutes on medium heat and simultaneously pressing with the index fingers of both hands, 1 was more elastic than 2 and the finger marks disappeared, but about 2 Determined that the heat did not reach the opposite side from this because there was a lot of water left on the finger traces, and as a result of the attached material, a fir shell charcoal was tested for infrared radiation emissivity, and it was 100 It was found that the emissivity was higher than that of a black body (limit of radiant heat) at ℃ and 300 ℃, and powdered fir shell was mixed with a binder and pressed at high pressure to form a plate. Similar results could be obtained for those that did. (2) It is natural that carbonization of the fir shell increases the heat absorption from the fact that all materials have high black heat absorption, but in the case of fir shell charcoal, which is a substance with a high radiative emission rate, It is clear that the heat absorption is even higher. Covering this absorbed heat with a fiber material with low thermal conductivity is effective in maintaining heat retention, and the heat absorption of fir shell carbide is used. It was also revealed that it is effective as a heat retaining material. As described above, according to the present invention, it has been found that carbonization of fir shells increases the infrared radiation divergence rate, improves thermal efficiency and heat absorption, and enables effective use of thermal energy as a heat insulating material.

Claims (1)

[Claims] 1 300 ° C. of carbonized fir shell by incomplete combustion
Characterized by the fact that it has a high infrared radiation divergence rate by being heated directly or indirectly below, it can be used even if it is repeatedly used. Fir shell carbide 2 By heating the fir shell, the heat absorption rate is improved and the heat retention property is improved. Characterized fir shell carbide