NO CHIMNEY, NO PROBLEM
So you have not got a chimney or flue where you need it.
There are ways around the problem. Modular pumice flues can be built either inside or outside the room.The pumice material negates the need for a steel liner.
Double skinned stainless steel
flues can also be erected inside or outside the room.
Both of these options can be viewed on the CHIMNEYS page.
Most stoves can be installed with vitreous enamel pipe up to 150mm from the ceiling and double skinned flue from that point through the roof.
If the room has or is near to an outside wall some gas fires and stoves can be vented by balanced or power flues. Two Rayburn kerosene burning ranges can also vent with a balanced flue.
If you cannot use any sort of flue then some gas fire and stoves and an Esse range can be used that require no flue at all. Combustion gases are rendered harmless by inbuilt catalytic converters.