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Development of the Dryer with a Heat Source of Carbon Nanofibers

탄소나노섬유를 열원으로 적용한 세탁물 건조기의 개발

  • Received : 2018.03.27
  • Accepted : 2018.06.05
  • Published : 2018.06.30

Abstract

This paper presents a heating source of carbon nanofibers for the efficiency and the drying performance of laundry dryer, and focuses on the applicability-evaluation of its source. To design the proposed heating module, experiments were conducted in terms of surface temperature and surface temperature distribution characteristics of carbon nanofiber lamps. The surface temperature of the lamps increased linearly with increment of a current to flow a lamp and revealing the increasing pattern as the length of the ramps is shorter. The proposed heating source was evaluated based on drying efficiency, moisture evaporation rate at laundry, and internal temperature of a drum during drying process. The drying efficiency satisfied a 45% which is specified in KS C 9319. The moisture evaporation rate and the internal temperature of the drum were respectively 98.88% and $61.1^{\circ}C$, which are similar to that of S's company dryer. From the evaluation and actual drying test results, the proposed carbon nanofiber lamp heating module is considered to be applicable as a heat source for laundry dryer in terms of drying efficiency and drying performance. it is possible to obtain a heat source at a high temperature, an excellent calorific value, an improvement in drying performance, and an effect of sterilizing laundry due to the emission of far-infrared rays. In addition to the applicability, the difference of the drying efficiency between the dryers was analyzed in detail based on the power consumption of the heat sources.

본 논문은 세탁물 건조기의 고효율과 건조성능 향상을 위한 탄소나노섬유의 열원(히팅모듈)을 설명하였고, 이 열원의 적용 가능성을 평가하는데 집중하였다. 제안된 히팅모듈의 설계를 위해, 탄소나노섬유램프의 표면온도와 표면온도분포특성에 관한 실험이 수행되었다. 그 램프의 표면온도는 램프에 흐르는 전류의 증가와 함께 선형적으로 증가하였고, 그 램프의 길이가 짧을수록 증가하는 패턴을 보였다. 제안된 히팅모듈은 건조효율, 세탁물의 수분증발률, 건조동작 중 드럼의 내부온도를 기반으로 평가되었다. 건조효율은 KS C 9319의 기준인 45%를 충족하였고, 수분증발률과 드럼의 내부온도는 각각 98.88%와 평균 $61.1^{\circ}C$로 S사의 제품과 대등한 건조성능을 보였다. 그 평가와 실제 건조실험 결과로부터, 제안된 탄소나노섬유램프 히팅모듈은 건조효율과 건조성능의 측면에서 세탁물 건조기의 열원으로 적용 가능할 것으로 판단되며, 높은 온도의 열원, 우수한 발열량, 원적외선 방출에 의한 건조성능의 향상과 세탁물의 살균효과를 얻을 수 있다. 추가적으로, 그 건조기들 사이에 건조효율 성능차이가 열원의 소비전력을 기반으로 상세히 분석되었다.

Keywords

References

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