Experimental Study of Thermal Performance Comparison Based on the Traditional and Multifunctional Biomass Stoves in China

The biomass stoves have been applied thousands of years in Chinese rural areas, while the thermal efficiency of the traditional biomass stove is low and redundant heat is utilized inadequately. In this paper, the multifunctional biomass stove which has the heat collector inside was designed and transformed based on the structure analysis of the traditional biomass stoves. Furthermore, the related performance indicators were proposed, which are applicable for the multifunctional biomass stove. In addition, the multifunctional biomass stove was compared with the traditional biomass stove in the thermal performance by testing. The results which were obtained by synthesizing the performance indicators showed that the thermal efficiency of the multifunctional biomass stove was 30.79% higher than the traditional biomass stove based on the kang surface temperature. The multifunctional biomass stove had a preferable thermal performance than the traditional biomass stove. Thus, the multifunctional biomass stove can reduce the energy consumption and is applicable in rural buildings.