Impacts of fuel feeding methods on the thermal and emission performance of modern coal burning stoves  

作　　者：Riaz Ahmad Yuguang Zhou Nan Zhao Crispin Pemberton-Pigott Harold John Annegarn Muhammad Sultan Renjie Dong Xinxin Ju 

机构地区：[1]Bioenergy and Environmental Science and Technology Laboratory,College of Engineering,China Agricultural University,Beijing 100083,China [2]Key Laboratory of Clean Renewable Energy Utilization Technology,Ministry of Agriculture and Rural Affairs,Beijing 100083,China [3]National Center for International Research of BioEnergy Science and Technology,Ministry of Science and Technology,Beijing 100083,China [4]School of Geo-and Spatial Sciences,Private Bag X6001,North-West University,2520 Potchefstroom,South Africa [5]Department of Agricultural Engineering,Bahauddin Zakariya University,Bosan Road,Multan 60800,Pakistan [6]Yantai Institute,China Agricultural University,No.2006 Binhai Zhonglu,Laishan District,Yantai,Shandong Province 264670,China [7]Shandong Sino-March Environmental Technology Co.,Ltd.,Yantai 264006,China

出　　处：《International Journal of Agricultural and Biological Engineering》2019年第3期160-167,共8页国际农业与生物工程学报（英文）

基　　金：This research was supported by the National Natural Science Foundation of China(Grant No.51806242);the Chinese Universities Scientific Fund(No.2019TC010);the Chinese Universities Scientific Fund-Special Project for"Double First-Class"Initiative of College of Engineering,China Agricultural University,"the Characteristics of Thermal and Mass Flow for Clean Space-heating of Rural Households using Biofuels";the Agricultural Product Quality Inspection Bureau,Ministry of Agriculture and Rural Affairs,China,Agricultural Industry Standard Development Project-"Determination method of major atmospheric pollutants from rural household stoves"(No.181721301092371112);the bilateral China-South Africa MoST-NRF joint project“Development of Scientifically Robust and Culturally Appropriate Metrics and Protocols for Evaluating Clean(Combustion)Cooking Stoves”,sponsored by Ministry of Science and Technology,China;Investigation on South-South Cooperation in Climate Change through Clean Stove Alliance,sponsored by Ministry of Ecology and Environment and Administrative Center for China's Agenda 21(No.0201835).

摘　　要：The extensive use of traditional cooking and heating stoves to meet domestic requirements creates a serious problem of indoor and outdoor air pollution.This study reports the impacts of two fuel feeding methods-front-loading and top-loading on the thermal and emissions performance of a modern coal-fired water-heating and cooking stove using a contextual test sequence that replicates typical patterns of domestic use.Known as a low-pressure boiler,when this stove was fueled with raw coal,the findings indicate that front-loading the fuel,which devolatilizes the new fuel gradually,produced consistently higher space heating efficiency and lower emission factors than top-loading the same stove,which devolatilizes new fuel all at once.Comparing the performance at both high and low power gave the similar results:front-loading with raw coal produced consistently better results than top-loading.The average water heating efficiency when front-loading was(58.6±2.3)%and(53.4±1.8)%for top-loading.Over the sixteen-hour test sequence,front-loading produced 22%lower emissions of PM2.5(3.9±0.6)mg/MJNET than top-loading(4.7±0.9)mg/MJNET.The same pattern was observed for carbon monoxide and the CO/CO2 ratio.CO was reduced from(5.0±0.4)g/MJNET to(4.1±0.5)g/MJNET.The combustion efficiency(CO/CO2 ratio)improved from(8.2±0.8)%to(6.6±0.6)%.Briquetted semi-coked coal briquettes are promoted as a raw coal substitute,and the tests were replicated using this fuel.Again,the same pattern of improved performance was observed.Front loading produced 3.5%higher heating efficiency,10%lower CO and a 0.9%lower CO/CO2 ratio.It is concluded that,compared with top loading,the manufacturers recommended front-loading refueling behavior delivered better thermal,emissions and combustion performance under all test conditions with those two fuels.

关 键 词：stoves front-loading top-loading REFUELING domestic coal thermal efficiency PM2.5 emissions semi-coked coal briquettes 

分 类 号：O64[理学—物理化学]