Evaluating the performance of biomass gasification based combined cooling, heating, and power system operated under different operating strategies

• Main Authors: Pengfei Jie, Fengjun Wei, Fenghe Zhang, Jing Li
• Format: Article
• Language: English
• Published: SAGE Publishing 2019-02-01
• Series: Advances in Mechanical Engineering
• Online Access: https://doi.org/10.1177/1687814019827414

Compared with biomass combustion and biogas technology, biomass gasification based combined cooling, heating, and power (BGBCCHP) system provides an opportunity for better using biomass energy. Three operating strategies (following the thermal load, following the electric load, and following the hybrid electric–thermal load) were investigated. The economic, energetic, and environmental performance of a BGBCCHP system operated under the above three operating strategies were evaluated, respectively. Annual total cost, annual primary energy consumption, annual primary energy ratio, and annual carbon dioxide emissions were used as evaluation criteria. The integrated performance was analyzed by introducing a reference separation production system. A BGBCCHP system for a seven-story office building built in Beijing, China, was used as the case study. Results showed that following the hybrid electric–thermal load yielded the best economic and energetic performance, and following the electric load yielded the best environmental performance. The BGBCCHP system under following the thermal load achieved the worst economic and environmental performance, and the BGBCCHP system under following the electric load achieved the worst energetic performance. Furthermore, following the hybrid electric–thermal load yielded the best integrated performance, while following the thermal load yielded the worst integrated performance. Finally, calculation results indicated that BGBCCHP system was superior to reference separation production system from the environmental perspective.