Jesus gave an account of a rich man, and a begger named Lazerus. The details of this story (which was not a parable) contradict the notion that hell is without fire.
“In hell, where he was in torment, he looked up and saw Abraham far away, with Lazarus by his side. So he called to him, ‘Father Abraham, have pity on me and send Lazarus to dip the tip of his finger in water and cool my tongue, because I am in agony in this fire.”
I find this to be inconclusive, though it is the best argument for literal fire. However, the rich man is using words to convey his pain, and thus is limited to his lexicon. It is possible that burning in fire is the closest description one can use to describe the agony of hell.
I understand the request to have a water-dipped finger pressed to his tongue to indicate some kind of heat, but in this lies a clue that we are not talking about somebody burning as we understand it. The request itself is strange. On fire, a simple drop of water would have zero effect on your temperature, so why does the rich man ask for a wet finger to be pressed to his tongue? Even this sounds like some kind of metaphor. Why not request a bucket of water to be tipped over him? I find it likely the rich man is grasping in a deluded state, overwhelmed by the pain he is in and trying desperately to draw strings between the world he resides in, and the world he knows.