Suppose I wanted to build a PC application but instead of that I’d make an Android app which does not access mobile only APIs. Can I run something like that on my PC? Do that by like running dalvik vm on a pc and then running the app in that? Is there another way to run an app on PC apart from using an emulator?
No there is no direct way of doing that. The only ways of doing it are by using an emulator like for example the one included in the Android SDK (Android Studio) or Bluestacks.
EDIT: But there is no way to run android apps without an emulator unless you want to write the dalvik vm for every cpu architecture yourself!
EDIT2: Quoting @XavierFalempin from the comments section:
There was also ARC welder on chrome to run some android apps. developer.chrome.com/apps/getstarted_arc