摘要:
Thermoelectric materials according to an embodiment of the present invention are a plurality of p-type and n-type thermoelectric materials which constitute a thermoelectric conversion element. Provided are thermoelectric materials, a thermoelectric conversion element using the same, and a thermoelectric module using the thermoelectric materials and thermoelectric conversion element, the thermoelectric materials being characterized in that: a primary phase is an MgAgAs crystal phase; internal defects of the plurality of thermoelectric materials constituting a single thermoelectric conversion element have an area ratio of 10% or less with respect to the total area of defective portions in a scanned surface on which an ultrasonic defect detection is performed in the thickness direction of the thermoelectric material; and the thermoelectric material comprises a sintered body which has no defect with a length of 800 µm or more on any vertex of cubic chips of the thermoelectric material.
摘要:
A cold accumulating material for extremely low temperature cold 1 is formed by filling pores 3 of a porous carrier 2 with magnetic particles 4 containing a rare earth element. The porous carrier 2 is desired to be formed of a sheet-shaped porous metal. A refrigerator according to this invention contains a cold reserving unit 5 filled with the aforementioned cold accumulating material for extremely low temperature cold 1. The above described structure is capable of exerting a sufficient refrigerating capacity with a small pressure loss of refrigerant (operating medium) and providing a cold accumulating material for extremely low temperature cold easy to process to a shape reducing the pressure loss and a refrigerator using the same.
摘要:
A visible light responsive photocatalyst powder has organic gas decomposition performance that responds nonlinearly to an amount of irradiated light under visible light in an illuminance range of not less than 200 lx nor more than 2500 lx. The visible light responsive photocatalyst powder has a gas decomposition rate of 20% or more, for example, when visible light having only a wavelength of not less than 380 nm and an illuminance of 2500 lx is irradiated, the gas decomposition rate (%) being set as a value calculated based on [formula: (A - B) / A x 100], where A represents a gas concentration before light irradiation and B represents a gas concentration when not less than 15 minutes have elapsed from the light irradiation and, at the same time, the gas concentration is stable, the gas concentrations being measured while allowing an acetaldehyde gas having an initial concentration of 10 ppm to flow into a flow-type apparatus in which 0.2 g of a sample is placed.
摘要:
A visible-light-responsive photocatalyst powder includes a tungsten oxide powder. The tungsten oxide powder has color whose a* is -5 or less, b* is -5 or more, and L* is 50 or more when the color of the powder is expressed by an L*a*b* color system. Further, the tungsten oxide powder has a BET specific surface area in a range of 11 to 820 m 2 /g .
摘要:
A cryogenic refrigerant comprising magnetic particles, less than 1 wt.% of which may be destroyed after 1 x 10 6 cycles of simple harmonic motion at a maximum acceleration of 300 m/s 2 . Such a cryogenic refrigerant has excellent resistance to mechanical oscillation and acceleration. A refrigerator is equipped with a refrigeration system with a container for the cryogenic refrigerant. Such a refrigerator exhibits excellent refrigeration performance for a long time.
摘要翻译:包含小于1重量%的磁性颗粒的低温制冷剂可以在最大加速度为300m / s 2的简单谐波运动1×10 6个循环之后被破坏。 这种低温制冷剂具有优异的耐机械振动和加速性能。 冰箱配备有用于低温制冷剂的容器的制冷系统。 这种冰箱长时间显示出优异的制冷性能。
摘要:
A light emitting device and an LED light bulb using white LED light sources have light control and toning functions equivalent to those of an incandescent light bulb. The light emitting device includes a first light source which emits a first white light having a first color temperature and a second light source which emits a second white light having a second color temperature higher than the first color temperature, and emits a mixed white light of the first white light and the second white light. A color temperature of the mixed white light of the first white light and the second white light is lower as an emission intensity of the mixed white light is lower.