 amdimchina paeraa nundi ,  ushna badilee yokka yantraamgaalanu sangrahinchandi .
 ushna badilee anede dharmal inginiiring yokka ooka vibhaagam ,  idi bhautika vyavasthala Madhya ushna sakta  ( vaedi )  utpatthi ,  upyogam ,  marpidi mariyu maarpidiki sambandhinchinadi .  ushna badileeni dharmal conduction ,  dharmal convection ,  dharmal rediyeshan mariyu dhasha maarpula dwara sakta badilee vento vividha yantraamgaalugaa vargeekarinchaaru .  injaneerlu ushna badileeni saadhinchadaaniki ,  challagaa ledha vedigaa umdae vibhinna rasayana jatula dravyaraasini  ( advection ruupamloe dravyaraashi badilee )  kudaa pariganistaaru .  yea yantraamgaalu pratyeka lakshanaalanu kaligi unnappatikee ,  avi oche vyavasthaloo tarachugaa yekakaalamlo sambhavistayi .
 ushna badilee yokka mechanisms ‌ loo dharmal conduction ,  dharmal convection ,  dharmal rediyeshan mariyu faze maarpula dwara sakta badilee unnayi ,  ayinappatikee injaneerlu saamuuhika badileeni advection ruupamloe ushna badilee ruupamloe bhaawistaaru .