CAJ | 학술논문

在高寒地区农户仅将沼气作为炊事用能,冬季采暖方式主要还以直接燃烧秸秆、薪柴等生物质为主.为了实现冬季取暖和炊事都利用沼气,设计小型户用沼气锅炉,并参照大中型锅炉的设计方法,提出适用于小型户用沼气锅炉的热力计算方法.通过理论计算和选取相应参数,利用炉膛出口温度和排烟温度先假设与后校核的方法,对沼气锅炉辐射换热面和对流换热面进行理论设计计算,并设计出沼气锅炉的整体结构.通过试验对锅炉性能进行测试,平均热效率为92.76%,完全符合锅炉的设计要求.
재고한지구농호부장소기작위취사용능,동계채난방식주요환이직접연소갈간、신시등생물질위주.위료실현동계취난화취사도이용소기,설계소형호용소기과로,병삼조대중형과로적설계방법,제출괄용우소형호용소기과로적열력계산방법.통과이론계산화선취상응삼수,이용로당출구온도화배연온도선가설여후교핵적방법,대소기과로복사환열면화대류환열면진행이론설계계산,병설계출소기과로적정체결구.통과시험대과로성능진행측시,평균열효솔위92.76%,완전부합과로적설계요구.
In the cold area farmers only use biogas for cooking, while heating is mainly generated by directly combustion of straw, firewood and other biomass. In order to use the biogas as fuel for both heating and cooking in winter, a smal domestic biogas boiler is designed. Basing on the design method of large and medium-sized boiler, this paper puts forward a set of suitable thermodynamic calculation method for smal domestic biogas boiler. During theoretical calculation, the radiation heat transfer surface and convective heat transfer surface were optimized to make the calculated outlet temperature of the combustion chamber and smoke discharging temperature accorded with assuming values, and then the overal structure of the methane boiler was designed. The performance of the boiler was tested, and average thermal efficiency of 92.76%was achieved, which could meet the requirements of the design of boiler.