Scholarlink

As the thermal performance of the building envelope improves, the power required to heat the building decreases and the building’s thermal energy needs can be met not only by traditional fuel-burning heating appliances, but also by engineering systems using ambient or waste-heat energy. One source of waste heat energy can be space cooling, refrigeration systems for certain products and materials, where the amount of waste heat energy is almost equal to the cooling or refrigeration energy demand. In cooler climates, such as Lithuania, the waste energy from the cooling process can be used for heating purposes, but this energy needs to be “time-shifted”, i.e. accumulated and used as and when it is needed. This study analyses the results of the monitoring of the thermal regimes of a seasonal sensible thermal energy storage plant installed on the campus of Kaunas University of Technology (Lithuania) in 2019, which is fed with waste heat energy. The analyzed parameters are relevant for modelling and optimization of technical parameters of the seasonal underground sensible energy storage - heat transfer coefficient of the storage tank walls, ground embedment, to achieve maximum round-trip efficiency of the hybrid system. The study covers the 2021–2024 period of operation of the seasonal thermal energy storage system.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Long-Term Monitoring of Sensible Energy Storage Temperature Regimes in the Hybrid Thermal Energy Utilization System

  • 会议论文

  • 发表日期：

    2026年

查看全文
  • Jurgita Černeckienė,
  • Saulius Gudžius,
  • Tadas Ždankus

摘要

As the thermal performance of the building envelope improves, the power required to heat the building decreases and the building’s thermal energy needs can be met not only by traditional fuel-burning heating appliances, but also by engineering systems using ambient or waste-heat energy. One source of waste heat energy can be space cooling, refrigeration systems for certain products and materials, where the amount of waste heat energy is almost equal to the cooling or refrigeration energy demand. In cooler climates, such as Lithuania, the waste energy from the cooling process can be used for heating purposes, but this energy needs to be “time-shifted”, i.e. accumulated and used as and when it is needed. This study analyses the results of the monitoring of the thermal regimes of a seasonal sensible thermal energy storage plant installed on the campus of Kaunas University of Technology (Lithuania) in 2019, which is fed with waste heat energy. The analyzed parameters are relevant for modelling and optimization of technical parameters of the seasonal underground sensible energy storage - heat transfer coefficient of the storage tank walls, ground embedment, to achieve maximum round-trip efficiency of the hybrid system. The study covers the 2021–2024 period of operation of the seasonal thermal energy storage system.