Dab tsi yog dej rauj hauv lub raj xa dej
Thaum cov ncu tau tsim nyob rau hauv lub boiler, nws yuav inevitably nqa ib feem ntawm boiler dej, thiab boiler dej nkag mus rau hauv lub chav system nrog rau cov chav, uas yog hu ua chav nqa.
Thaum lub tshuab hluav taws xob tau pib, yog tias nws xav kom sov tag nrho cov yeeb nkab yeeb nkab network ntawm qhov kub thiab txias mus rau qhov kub ntawm chav, nws yuav ua rau muaj qhov tsis zoo ntawm chav. Qhov no ntawm cov dej condensed uas heats lub chav yeeb nkab network ntawm startup yog hu ua start-up load ntawm lub system.