Why TES ?

TES reduces the installed capacity of the chillers by up to 70%, lowers electricity costs and secures the operation of the installation.

Thermal energy storage: the STL (Latent STorage)
An essential and unique technology for air-conditioning and industrial cooling

Air conditioning systems (HVAC) are traditionally designed to satisfy needs on the hottest days of the years.
Industrial refrigeration systems often supply cooling energy for short high consumption periods (corresponding to production cycles).
These systems are designed to meet peak demand but they rarely operate at their nominal capacity and are often on hold for several hours.
When cooling need are regulated (with peak and off-peak hours), it is particularly advantageous to use CRISTOPIA thermal energy storage STL to spread the production time over a longer period.

Transferring electrical power consumption to off peak hours can achieve significant electricity costs savings.

Operation / Engineering / catalogue

To make both energy and operating costs savings

The STL is a thermal energy storage system by latent heat with high energy performance.
By spreading the thermal energy production over 24 hours, STL can reduce the capacity of the chillers by 30 to 70%. It can also reduce the electricity power by 30 to 80% depending on chiller technology.
The STL stores energy during the cheapest periods (off peakà and releases it during the most expensive periods (peak hours).
By transferring electricity consumption to times when electricity prices are most advantageous, significant savings on electricity costs can be made.

Histogram of a building's cooling demand and its daily electricity consumption
The STL reduces the size of the installation by 30 to 70%. The example above shows that, thanks to the STL, the number of machines needed for the cooling production dropped from 4 to 2, with a 50% power reduction. By storing thermal energy during the night to release it during the day, this solution allows to use of electricity at the lowest prices and avoids the peaks.

STL's adavantages

To reduce :
  • chiller size: by 30 to 70%,
  • the amount of refrigeration fluid,
  • the size of the cooling towers or dry coolers,
  • the electricity power: by 30 to 80%,
  • noise pollution,
  • ON / OFF of the chiller,
  • maintenance costs,
  • operating costs.

To increase :
  • the cooling capacity of the installation,
  • energy efficiency of chillers,
  • regularity of the electrical load profile,
  • performance and reliability of the installation,
  • lifespan of the system,
  • flexibility of the system,
  • energy management.

Towards Sustainable Development:
  • better management of thermal energy,
  • control of primary energy supply and demand (energy used to produce electricity,
  • reduction of primary energy consumption in power plants,
  • reduction in greenhouse gases emissions.

What you need to know about the STL

The STL allows to store thermal energy when electricity is less expensive.

It regulates the cooling production by discharging the energy (accumulated at night) when electricity is the most expensive.

It allows to reduce the electricity power of the air-conditioning and industrial cooling by 30 to 70%.

It allows to reduce operating costs, maintenance costs and the electrical power of the system with transfer to off-peak hours.

To know more

Engineering & expertise
See our catalogue
Customer reference projects

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