HEAT EXCHANGE METHOD OF TAP WATER HEAT EXCHANGER AND WATER HEATING DEVICE

• Main Authors: JEONG IN CHUL, KWON TAE SEONG, YOON SOO HYUN
• Format: Patent
• Language: English; Korean
• Published: 08.03.2021
• Subjects: ALLOYS; BLASTING; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; FERROUS OR NON-FERROUS ALLOYS; FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL; HEAT EXCHANGE IN GENERAL; HEATING; LIGHTING; MACHINE TOOLS; MECHANICAL ENGINEERING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; RANGES; SOLDERING OR UNSOLDERING; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; VENTILATING; WEAPONS; WELDING; WORKING BY LASER BEAM

The present invention relates to a heat exchanging method of tap water, and a heat exchanger. Provided is a heat exchanging method of tap water using a heat exchanger. According to the present invention, the tap water has a residual chlorine content of 2 ppm or more. The heat exchanger comprises: a plurality of hot plates including ferritic stainless steel; and copper brazing for bonding between the hot plates. The ferritic stainless steel contains less than 0.5 wt% of nickel, 0.1 to 2 wt% of copper, and 0.03 wt% or less of carbon. 본 발명은 열교환기를 이용한 직수의 열교환 방법으로서, 상기 직수는 잔류 염소 함량이 2 ppm 이상이며, 상기 열교환기는 페라이트계 스테인리스강을 포함하는 복수개의 열판 및 상기 열판 사이를 결합하는 구리 브레이징을 포함하고, 상기 페라이트계 스테인리스강은 0.5 중량% 미만의 니켈, 0.1 내지 2 중량%의 구리, 및 0.03 중량% 이하의 탄소를 포함하는 직수의 열교환 방법, 및 열교환기에 관한 것이다.