Models of Sub-Components and Validation for the IEA SHC Task 44 / HPP Annex 38Part E: Storage models A technical report of subtask C Report C2 Part E
March 2013 - PDF 1.12MB
In this report, the models for the thermal energy storage systems have been reviewed and listed. The categories of the thermal energy storage models listed in this report are depicted in Figure 1. As shown in Figure 1, the thermal energy storage can be categorized into the latent energy storage (mainly phase change material storage - PCM) and sensible energy storage. For the latent energy storage, there are six representative forms in the practical application: microencapsulated PCM-slurries, capsulated PCM storage modules, multi-layer PCM unit, snow storage, ice storage, and hybrid PCM-sensible storage unit. For the sensible energy storage, there are two representative forms in the practical application: sensible liquids and sensible solids. Furthermore, based on the time scale of the storage, the categories can be divided into short term and seasonal storage. In this report, if the storage module is for seasonal storage, it will be specifically mentioned in the classification. The theoretical principles of different categories of storages are different, and are not the main theme of this report. Representative numerical models have been reviewed and listed according to the categories. In Section 2.1, the latent energy storage models are reviewed and listed, while in Section 2.2, the sensible energy storage models are presented. The validation of these representative models are introduced in Section 3. The summary table for storage models with respect to certain section is listed in Appendix A.