You could do it in theory, but it would be a really bad idea.
For one thing, it would be very hard for readers to find their way from one chapter to the next. Although you have your own sub-domain on HP, all our Hubs are mixed up together. Take a look at a random Hub, and you'll see that related Hubs by other people are featured in the right sidebar, but there are no prominent links to other Hubs by the same author.
If you must publish a book online, create your own blog and publish it that way. The blog posts follow one after the other in chronological order, which makes it easy for readers to follow. But you're unlikely to make any money.