Coldness of ice energy storage

Can ice thermal energy storage reduce energy costs in HVAC cooling systems?

This paper applied the POET framework to analyze and identify possible energy efficiency activities that may reduce energy costs in HVAC cooling systems with Ice Thermal Energy Storage (ITES) in order to achieve maximum potential cost-savings, particularly for cooling loads in commercial buildings.

What is ice storage?

The expression “ice storage” commonly defines thermal storage employing the enthalpy difference of water during its phase change from liquid to solid . The high latent heat of fusion of water results in a higher energy density for this type of storage compared to water-based sensible storage, leading to smaller volumes.

What is cold thermal energy storage (CTEs)?

Shading of facades and fenestrations, use of thermal insulation material, proper orientation of building envelop which are used during building construction are among passive methods while cold thermal energy storage (CTES) is an active one. CTES transfers the peak of electricity consumption from on-peak hours to off-peak hours.

Why do ice storage systems have a higher energy density?

The high latent heat of fusion of water results in a higher energy density for this type of storage compared to water-based sensible storage, leading to smaller volumes. Since the melting temperature of water is 0 °C, ice storage systems are used as a heat source during the heating season, to provide free cooling during summer.

Can ice storage systems be optimized for seasonal energy storage?

While the optimization of the design and operation of energy systems with seasonal thermal energy storage has been the focus of several recent research efforts, there is a clear gap in the literature on the optimization of systems employing ice storage systems, particularly for seasonal energy storage purposes.

Why is ice storage important?

Since the melting temperature of water is 0 °C, ice storage systems are used as a heat source during the heating season, to provide free cooling during summer. Ice storages are normally employed for demand peak shaving rather than seasonal load shifting, and are therefore limited in size with a clear operation objective , .