I’ve wondered if you can get smart boilers that measure the hysteresis of your room and modulate the flame accordingly?
You can. Most electronic stats have something inbuilt called TPI which learns how best to use the heat from the boiler to heat the room.
Most boilers will have a dial to adjust the flame size this adjusts how quickly it will heat the water up. This is usually totally independent to the thermostat control.
No they don’t. Most boilers have a dial that adjusts the temperature the heating circuit goes to, usually max 80deg. Some also have a dial to set the max temp for DHW as well, usually max 65deg. The flame is controlled by the PCB modulating the gas & air flow to the burner. A decent boiler will modulate at around 7:1 which means that if you have a 28kw boiler it can modulate down to 4kw so it isn’t burning the amount of gas required to generate 28kw.
Also regarding thermostatic valves. You should not put thermostatic valves on the radiators in the same room as the thermostat. The two conflict each other.
Not sure on that one either. Usually the only room without a TRV is the bathroom. Most room stats are put in a hallway. Yes the room stat will turn the boiler off when the room gets to temp but as the TRV is a passive control it can’t do anything to make the room hotter until the stat clicks back in to fire the boiler. If you turn the TRV right down then yes the stat will make the boiler constantly run but to be fair all it takes is a bit of common sense to make it work properly and if any rooms get hotter than you want just turn the TRV down a notch or two.