There is a high potential for small-scale and medium scale wood-fired cogeneration in Estonia. The purpose of this research is to define the eligible capacity for wood fuel based cogeneration plant operating on the ba...There is a high potential for small-scale and medium scale wood-fired cogeneration in Estonia. The purpose of this research is to define the eligible capacity for wood fuel based cogeneration plant operating on the base of district heating systems in small towns. Results were checked and approbated by economical and environmental factors. Two optimal sizing methods were used maximizing of amount of heat year-round while working at full installed capacity and maximizing of amount of heat year-round while working with partial loads. Results of defining optimal capacities for wood-fired cogeneration plants in small Estonian towns showed that method of maximizing of amount of heat year-round while working with partial loads is more adequate to real situation.展开更多
This study aimed to grasp the characteristics of woody biomass use and application in leading examples of Japanese biomass towns, and made the following two points clear： （1） Biomass town plans had been officially ...This study aimed to grasp the characteristics of woody biomass use and application in leading examples of Japanese biomass towns, and made the following two points clear： （1） Biomass town plans had been officially announced in 318 districts by 2011, and in about 71% of the districts, woody biomass use and application, which is classified into four types, was being conducted; （2） In each example studied, regional characteristics were reflected and there were distinct characteristics. Shimokawa Town in Hokkaido made the most number of efforts, and after 2008 the number of efforts was increasing; however, along with each of the other examples, the use and application of forest timber offcuts is a task for the future.展开更多
文摘There is a high potential for small-scale and medium scale wood-fired cogeneration in Estonia. The purpose of this research is to define the eligible capacity for wood fuel based cogeneration plant operating on the base of district heating systems in small towns. Results were checked and approbated by economical and environmental factors. Two optimal sizing methods were used maximizing of amount of heat year-round while working at full installed capacity and maximizing of amount of heat year-round while working with partial loads. Results of defining optimal capacities for wood-fired cogeneration plants in small Estonian towns showed that method of maximizing of amount of heat year-round while working with partial loads is more adequate to real situation.
文摘This study aimed to grasp the characteristics of woody biomass use and application in leading examples of Japanese biomass towns, and made the following two points clear： （1） Biomass town plans had been officially announced in 318 districts by 2011, and in about 71% of the districts, woody biomass use and application, which is classified into four types, was being conducted; （2） In each example studied, regional characteristics were reflected and there were distinct characteristics. Shimokawa Town in Hokkaido made the most number of efforts, and after 2008 the number of efforts was increasing; however, along with each of the other examples, the use and application of forest timber offcuts is a task for the future.
