ШАХТНЫЙ КОТЕЛ . ВЕРХНЕЕ ГОРЕНИЕ / Coal top burning

эксперимент по верхнему горению угля в котле нижнего горения . new experiment on upper combustion #heating #water supply #plumbing #heating floor #sewerage #repair #installation of heating #construction #installation #heating house #boiler room #plumber #heat #house #ventilation #radiators #water #boilers #repair apartment #construction #boiler #samara #plumbing #pipes #interior #heating house #heating connection #radiator #electrics #water supply