Cross-season energy storage theory

Why is cross-seasonal heat storage important?

The mismatch between solar radiation resources and building heating demand on a seasonal scale makes cross-seasonal heat storage a crucial technology, especially for plateau areas. Utilizing phase change materials with high energy density and stable heat output effectively improves energy storage efficiency.

What is seasonal thermal energy storage?

Generally speaking, seasonal thermal energy storage can be used by storing summer heat for winter use or storing winter cold for summer use, i.e., summer heat for winter use and winter cold for summer use. Common seasonal heat storage includes seasonal sensible heat storage, seasonal latent heat storage, and seasonal thermochemical heat storage.

What are construction concepts for large or seasonal thermal energy storage systems?

Fig. 1. Construction concepts for large or seasonal thermal energy storage systems and their advantages and disadvantages . 2.1.1. Tank thermal energy storage (TTES) A tank thermal energy storage system generally consists of reinforced concrete or stainless-steel tanks as storage containers, with water serving as the heat storage medium.

What are heat storage methods for solar-driven cross-seasonal heating?

Heat storage methods for solar-driven cross-seasonal heating include tank thermal energy storage (TTES), pit thermal energy storage (PTES), borehole thermal energy storage (BTES), and aquifer thermal energy storage (ATES) 14, 15, 16. As heat storage volume increases, hot water preparation costs and heat loss per unit volume decrease.

What is seasonal thermal storage based on supercooled PCM?

The future research direction of seasonal thermal storage based on supercooled PCM is proposed. Seasonal thermal energy storage (STES) is a highly effective energy-use system that uses thermal storage media to store and utilize thermal energy over cycles, which is crucial for accomplishing low and zero carbon emissions.

Does seasonal thermal energy storage provide economic competitiveness against existing heating options?

Revelation of economic competitiveness of STES against existing heating options. Seasonal thermal energy storage (STES) holds great promise for storing summer heat for winter use. It allows renewable resources to meet the seasonal heat demand without resorting to fossil-based back up. This paper presents a techno-economic literature review of STES.