In this large-scale waste heat utilization project, we transformed excess heat from the rapeseed oil cooling process into a valuable energy source. Previously, the oil was cooled using electrical energy via cooling towers and water systems. Now, the waste heat is recovered using the heating system return, allowing it to be repurposed for factory heating, domestic hot water production, and washing water generation for the factory. To make the transaction even more efficient, we added a 14 m³ accumulator tank to store the utilized heat because the production and usage of utilized heat energy was not simultaneous. During the project we also renovated the entire heating system of the factory. This innovative solution reduces energy consumption, lowers operational costs, and enhances overall sustainability of the factory.
The project features several key innovations that contribute to its efficiency and sustainability. The high-performance Plate & Shell Heat Exchangers (Vahterus) ensure efficient heat transfer with no leaks, while automation streamlines operations, enhancing control and operational efficiency. The 14 m³ accumulator tank facilitates the efficient storage and utilization of recovered heat, optimizing the energy management system. With a payback period of 3.5 years, the project demonstrates strong financial viability. It also leads to significant carbon emission savings, reducing 707 tons of CO₂ annually. The system provides a thermal output of 470 kW and achieves impressive annual thermal energy savings of 3500 MWh, further underscoring the project’s sustainability and energy efficiency goals.
