Abstract: In a descending apparatus for emergency escape, a first winding part around which a wire rope is wound and a second winding part positioned above the first winding part and rotating to allow the wire rope unwound from the first winding part to be re-wound therearound to generate braking power are configured on an inner side of a case, a decelerating device controlling a descending rate of the descending apparatus by reducing a rotation rate of the second winding part by the braking power generated according to rotation of the second winding part when the wire lope is unwound as the descending apparatus descends are configured on both sides of the first and second winding parts, and an operating lever adjusting a descending rate of the descending apparatus by controlling a rotation rate of the second winding part according to an operation of an escaper when descending using the descending apparatus is configured at an upper portion of the case, and a handle 46 is provided to allow the wire rope to be wound the

Abstract: The present invention relates to a boiler system with dual hot water tanks. More specifically, the invention provides a boiler system with dual hot water tanks wherein one boiler comprises high-temperature and low-temperature water tanks. The invention mixes high-temperature water in the high-temperature tank with low-temperature water in the low-temperature tank at different flow rates in a mixing valve, and supplies hot water at a preset temperature to a water supply heat exchanger so the temperature of the heated water in the water supply heat exchanger is constantly maintained. The present invention can supply hot water at a constant temperature always suitable for use and is free from inconvenience or discomfort caused by thermal deviation, because hot water at a temperature higher or lower than the preset temperature is mixed with the preset-temperature water, and then supplied to the water supply heat exchanger.