11. This regenerator may be part of a valveless system, such as a Stirling engine. 12. The thermal design of this regenerator is the same as of other types of regenerators. 13. BT labs demonstrated the world's fastest regenerator a photonic digital network component. 14. A regenerator took waste heat and transferred it to the incoming air, increasing efficiency. 15. The inclusion of a regenerator differentiates the Stirling engine from other closed cycle hot air engines. 16. A third type of regenerator is called a " " Rothemuhle " " regenerator. 17. A third type of regenerator is called a " " Rothemuhle " " regenerator . 18. The Mamyshev regenerator can handle return-to-zero signals with ultrahigh data bit rates. 19. The two-parter also centered around Billy rapidly aging because of his use of the regenerator . 20. Each of their turbines employed a unique rotating recuperator, referred to as a regenerator that increased efficiency.