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RISS 인기검색어
- 검색키워드
- 저자 : ( Shinmook Choi ) (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
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Development of Foodwaste Drying Technology using Natural Gas Heat Source
( Jaehee Lee ),( Jangwook Choi ),( Shinmook Choi ) 한국폐기물자원순환학회(구 한국폐기물학회) 2019 ISSE 초록집 Vol.2019 No.-
Since 2013, the whole foodwaste 5 million ton per annum had to be processed inland of the South Korea without any dumping in ocean whatsoever, and as a result of it the foodwaste processing and recycling cost has been increasing constantly which the cost is 1.25 trillion won (250,000 Won per ton, approx. USD1.13 billion per annum and USD225/ton-foodwaste) per annum. This is a tremendous expense, but most importantly illegal disposal such as illegally burying in land somewhere pollutes the environment, which is now recognized as a national problem to be resolved. It is each municipality’s to properly process and recycle the foodwaste. There is a substantial debate where Ministry of Environment tempts to expand the disposal bin equipped with RFID (Radio- Frequency Identification) as well as disposer (Discharge foodwaste to the sewage line after grinding), which the municipalities have very much low recycling rates. In fact, the disposer creates greater problems such as pipe blockage and huge overload on the final sewage treatment plant. The best solution for the problems abovementioned is the foodwaste dryer to be installed wherever the foodwaste is produced, then the problems can be easily resolved. On the other hand, the electricity cost for the electric heat source dryer is a burden, and GHG (Greenhouse gas) emission is burden too. It is the importance and the necessity to develop the dryer in other to use the gas heat source of dryer that is a clean energy and reducing the GHG emission at the same time1). In order to secure the reliability of the drying performance of the dryer with the vapor closed-loop recirculation drying process, the automatic cooling and termination program using the vapor temperature difference was applied. As a result, compared with the electric heat source dryer, the operation cost of the gas heat source dryer was reduced by 41%, and the GHG (Greenhouse gas) emission was reduced by 57%. In addition, the performance of the gas heat source dryer (SMER, Specific Moisture Evaporation Rate, 0.88 kg-water/Mcal) improved to 75.2% of the electric heat source dryer (SMER, 1.17 kgwater/ Mcal).
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