Abstract: A humidifier (5) includes upper and lower water tanks (7) and (8) supported by a support frame (6). In a space between the upper and lower water tank, a plurality of hollow yarn bodies (1) are arranged in communication with upper and lower water tanks. The hollow yarn body is constructed of a parens yarn (2) of the hollow and a thin metal wire (3) connected to the power source thereof and wound around the hollow yarn body.

Abstract: There is provided an air conditioning apparatus including an air duct and provided therein with a blower, a heater, a humidifier and an air cooling dehumidifier comprised of an air-fluid heat exchanger,characterized in that:the said air cooling dehumidifier is disposed at a site that is shifted transversely from an air blowing outlet of the said air duct.

Abstract: There is provided a water feed device for humidification, comprising: an outflow reservoir that is disposed above a humidifier for feeding water into the humidifier by way of a permeation and that is provided with an overflow dam for maintaining a level of the water in the outflow reservoir substantially constant; an inflow reservoir that is disposed upwards of the outflow reservoir and that is provided with a flow inlet; a partition plate that is disposed between the inflow reservoir and the outflow reservoir; and a plurality of drip feed members which are provided in the partition plate for allowing the water in the inflow reservoir to drop by gravity in a form of droplets into the outflow reservoir.

Abstract: A temperature and humidity adjusting apparatus has an air cooling and dehumidifying device, an air heater and a humidifier arranged in order. The air cooling and dehumidifying device includes thermoelements that use the Peltier effect. The humidifier includes hollow yarn bodies, each of which are formed by winding metal wire that serves as a heater on the outer periphery of a hollow yarn that is formed into hollow construction from heat resistant fiber. The humidifier also includes means for supplying water to each of the hollow yarn bodies and a power supply that supplies power to the metal wire.

Abstract: There is provided a water feed device for humidification, comprising: an outflow reservoir that is disposed above a humidifier for feeding water into the humidifier by way of a permeation and that is provided with an overflow dam for maintaining a level of the water in the outflow reservoir substantially constant; an inflow reservoir that is disposed upwards of the outflow reservoir and that is provided with a flow inlet; a partition plate that is disposed between the inflow reservoir and the outflow reservoir; and a plurality of drip feed members which are provided in the partition plate for allowing the water in the inflow reservoir to drop by gravity in a form of droplets into the outflow reservoir.

Abstract: A porous hollow fiber membrane is dipped into either a high concentration alkali solution or a high concentration solution of chromic acid and sulfuric acid, etched and then dipped into a palladium ion solution. The membrane is then dipped into a solution containing reducing and complexing agents as well as metallic ions, and subjected to an electroless treatment. In this way, a porous hollow fiber membrane, to which a metallic layer is chemically bonded, can be obtained. The porous hollow fiber membrane is provided in which the bond strength between the membrane and the metallic layer and the amount of metal to be coated are increased. Because of a large amount of metal, it is possible to render the membrane sufficiently electrically conductive.