Starting from the end of the century and emerging in Huazhi – entering a new stage of green energy: Since the early 20th century, Norshepin, Sweden has been a gathering place for major turbine and pump manufacturers. More than a hundred years later, a small company called Againity joined them in 2013, and now the company is disrupting the energy production sector and pursuing a greener future.

The story of Againity begins at the end of the day, and everything stems from the personal dreams of its founder David Fryker å s. In order to fully utilize the energy loss in industrial processes, he established Aging. This company has found a method to convert hot water into electricity and district heating, with a system efficiency of up to 99%.

Againity’s patented ORC turbine can fully utilize various low-temperature waste heat and convert it into stable and renewable electricity. Both hot water boilers in heating plants and waste heat from industrial processes can become sources of energy for their power generation. Even if the temperature difference is only 30 degrees Celsius, it can still drive this special type of ORC turbine to generate electricity. Moreover, Againity’s ORC turbine power generation system adopts a modular design, with electrical power ranging from 100kWe to 560kWe.

“Network security is crucial in these applications, and ABB’s PLC can provide a very high level of security protection,” said Rickard Haglund, Automation Manager at Againity

The reliable operation of all equipment components is crucial, as ideally, the turbine should always remain in operation, and in the event of a run out of hot water supply, the components can limit their performance to prevent shutdown. The CPU of the AC500 PLC fully utilizes its integrated floating-point unit and uses a sixth degree polynomial to continuously perform advanced thermodynamic calculations, ensuring the continuous operation of the turbine and monitoring overheating and underheating conditions.

Rickard added, “ABB’s programming software provides tools for simplifying programming. It is important for us to download program changes online as they can be completed during operation without the need for downtime.”

Automation Builder uses structured text for advanced computational programming, and programs the main program in Continuous Function Diagram (CFC) to provide an overview of the entire process, making it an ideal tool for Agarity ORC turbines.

Againity’s ORC turbines can be deployed in different locations, such as treatment plants containing residual gases, regional heating stations, etc. Nowadays, many Aging turbines have been put into operation in Sweden, Norway, Finland, Poland, Estonia, Lithuania, and Greenland.