Why not use a Stirling engine?

First of all, I want to say that the landlord's question is a false proposition. Because Stirling engine has many practical applications, such as solar power generation, biomass cogeneration, space power generation and so on. At present, the most mature technology in China is Qiyao Power Company in Shanghai, which has developed 50kW cogeneration products. There are many foreign Stirling machine manufacturers, such as Sunpower, Infinia, SES, etc. Of course, there are still some Stirling machines on the submarine, that is, AIP systems, but these technologies are sensitive and rarely disclosed.