Hi , some days ago i made a high perfomance water boiler - K2K2 on LRBD. 

It have temperature of output gases ~150C so it have usefull temperature differnce near 922-145=777C (922C - temperature of burning LRBD , 145-output gases). This boiler uses 2,8 particles/frame of LRBD and makes 6,35 particles/frame of steam(wtrv) with temperature ~345C . But!!!

Also i made a bit research about LRBD, and found that 3 particles of LRBD in INSL box (in ideal conditions, i think) makes 6 particles of water to steam , but only with 280-175C .

I found it very interesting