How to charge a thermal storage system?

In a climate where the night ambient temperature drops below the thermal storage temperature, the storage system can be charged by means ofFREE COOLINGfrom existing heat rejection equipment such asCondensersand Cooling Towers. This technique is particularly suitable for sensible chilled water and PCMs (Eutectic) thermal storage systems.

Why do sensible heat storage systems require large volumes?

How-ever, in general sensible heat storage requires large volumes because of its low energy density (i.e. three and fi ve times lower than that of PCM and TCS systems, respectively). Furthermore, sensible heat storage systems require proper design to discharge thermal energy at constant temperatures.

What is a thermal energy storage system?

Renewable energy generation is inherently variable. For example, solar energy shows seasonal (summer–winter), daily (day–night), and hourly (clouds) variations. Thermal energy storage (TES) systems correct this mismatch between the supply and demand of the thermal energy.

What are the requirements for heat storage materials?

The following requirements should be typically met by heat storage materials: Large gravimetric storage capacity to minimize system costs (high heat capacity cp, high latent heat Δ hm, or high heat of reaction Δ hr).

Why do we need a thermal energy storage system?

the system to be supplemented by a thermal energy storage system in order to overcome the daytime peaks condensing pressures, hence the reduction in electricity consumption.

What is the temperature range of heat and cold storage?

Heat and cold storage has a wide temperature range from below 0°C (e.g. ice slurries, latent heat ice storage) to above 1000 °C (e.g. regenerator in the high-temperature industry). In the intermediate temperature range (0 to 120 °C) water is the dominating liquid storage medium (e.g. space heating).