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Not an expert, but I think you need pretty high temperatures. At night you might not be able to maintain it, even if it is hot. Iirc it's also about consistency of temperature. But that is for those superdooper thermal ones which will break down bone, etc. in 30 days. Ask Dj about his.
The other thing to look at is half burrying a painted chest freezer. One of the R4 gardeners questions presenters does this.
Basically if you want it fast I'm pretty sure you ideally need small pieces and high temperatures.
@dancing james has one of those thermal compost things.
From looking at them I wonder if you could insulate a barrel composters for the same outcome.
Or try one of those little indoor bokashi bins someone posted recently.