Research on the combined low pressure steam bypass and heat storage peak shaving for industrial extraction steam heating units

• Published in: Energy reports 2022-05, Vol.8, p.179-187
• Main Authors: Wei, Qingyuan, Zheng, Puyan, Zou, Siyu, Bai, Tianyu
• Format: Article
• Language: English
• Subjects: Combined heat and power unit; Heat storage peak shaving; Operation income; Peaking range; Steam bypass peak shaving; Thermal efficiency
• ISSN: 2352-4847; 2352-4847
• DOI: 10.1016/j.egyr.2021.11.039

This paper takes an industrial extraction heating unit as the research object, introduces a heat storage device into the steam bypass and proposes two schemes for discharging, one for electricity users and the other for heat users. The unit’s original peak shaving plan, bypass peak shaving plan, and bypass heat storage combined peak shaving plan were analyzed in this paper by building a unit analysis model in Ebsilon software. The results show that the bypass heat storage combined peak shaving scheme for power users has the largest peak shaving range, it has increased by 163.87MW compared with the original unit when the heat supply get to the largest. In one storage and discharge cycle, the scheme of bypass heat storage combined peak shaving discharging to electricity users has the highest cycle thermal efficiency and the highest operating profit, compared with the bypass peak shaving scheme, the operating revenue of the scheme has increased by 16.85%.