lämpövarastointimenetelmät

Lämpövarastointi, also known as thermal energy storage, refers to a technology that allows thermal energy to be stored for later use. This stored energy can be in the form of sensible heat, latent heat, or thermochemical heat. Sensible heat storage involves raising or lowering the temperature of a storage medium, such as water, rocks, or concrete, without changing its phase. Latent heat storage utilizes the heat absorbed or released during a phase change, like melting or freezing of materials such as salts or paraffin waxes. Thermochemical heat storage involves reversible chemical reactions that store and release heat.

The primary purpose of lämpövarastointi is to balance the supply and demand of thermal energy, especially in systems that experience fluctuating energy generation or consumption. This is particularly relevant for renewable energy sources like solar thermal power, which are intermittent. By storing excess energy generated during peak production times, it can be discharged when demand is high or when renewable sources are unavailable. Applications include domestic hot water systems, space heating and cooling in buildings, and industrial processes.

The effectiveness of a lämpövarastointi system depends on several factors, including the storage medium's properties, the system's design, and the temperature range of operation. Advantages include improved energy efficiency, reduced reliance on fossil fuels, and increased grid stability. Challenges can involve cost, space requirements, and the efficiency of charging and discharging the stored heat. Ongoing research aims to develop more efficient and cost-effective lämpövarastointi solutions to support a more sustainable energy future.