Reliable green energy at low cost
Enabling energy load shifting, by exploiting energy from renewable sources when it’s abundant, and storing it for later use. Thermal Energy Storage (TES) solutions, like Heatcube, ensure energy is consumed at its greenest and lowest cost.
Reduce energy costs
Reduce the cost of energy by charging Heatcube when electricity is cheaper at night, and take advantage of competitive prices.
Decarbonize heat production
Use Heatcube to run production without producing CO2. No emissions mean another saving – no additional CO2 taxes.
Secure energy supply
Heat stored means it is available when you need it. With a secure energy supply, fluctuations in the energy market have less impact, leaving pricing margins safe from political influence.
Remove fossil fuels
Charge with electricity from renewables. Being able to charge and discharge Heatcube simultaneously means there is flexibility to accommodate the intermittence of solar and wind power sources.
* Customized design
Simultaneous charging and discharging: the molten salt circulation system is designed for separate charging (electrical heating) and discharging (steam generation).
Paper, pulp and print
Heat is used to dry the pulp and heat the calendar rolls. It is also needed for recycled newsprint, specialty papers and packaging.
Chemical and petrochemical
Most of the heat is used for ammonia production by steam reforming of natural gas, steam cracking of naphtha and steam cracking of gas oil.
Cooking, preheating, washing and pasteurization are the main areas for heat demand. A big share of energy is also used for refrigeration.
Iron and steel
Steel production requires very high temperatures to heat and melt iron ore. We can save a lot of energy by pre-heating the production parts.
Most of the heat demand in the sector comes from cement production and requires temperatures of over 400°C.
Heat is used almost entirely in specific electrical processes. It is required mostly in the aluminum, copper and zinc production.
Based on one cycle per day, the round trip efficiency from electricity to steam is minimum 93%.
Heatcube is equipped with a 20 MW steam generation system. The temperature and pressure do depend on the feed water supply and energy storage volume, but our standard configuration (64 MWh storage) delivers more than 12 hours of 7.5 tons per hour at 16 bar(a), with a feedwater temperature of 100Â°C (equals 5 MWh for 12 hours).
Heatcube is supplied with a Battery Management System (BMS), which can be connected with the local Energy Management System (EMS) using a standard industry interface. The storage tanks do not require any preventive or periodic maintenance. The auxiliary systems (pumps, valves, etc) require minimal ongoing maintenance and training will be provided.
For an industrial facility with steam demand covered by an electric boiler, the energy cost is directly related to the average and/or peak power prices in the region it is located. With Heatcube, we can offer significant energy savings by load-shifting the electricity demand from high-priced to low-priced hours in the power market.
The increasing share of intermittent renewable power production together with decommissioning of fossil-based power generation creates more price volatility in the power markets. In the hours with high wind and solar power output and low demand, the power prices become very low, while in hours with less wind and solar, the power prices are consequently very high. With Heatcube, we are utilizing the increasing price volatility in the power markets to store energy in hours with high renewable production and low prices. When charging Heatcube with cheap electricity from excess renewable power production, we can deliver renewable heat whenever needed at a very low cost. At the same time, we are replacing fossil fuels with renewable electricity as the energy source for heat production, and so removing close to all carbon emissions associated with the industrial heat demand.
Heatcube is designed with a steam temperature range from 170°C to 400°C and can generate up to 20MW of discharge capacity. The saturated steam temperature is between 170°C and 212°C, with a steam pressure between 8 and 20 bar(a). To achieve 400°C with a pressure 3 - 40 bar(a) (superheated steam) a superheater can be added to Heatcube steam generator.