Q吸=Q放
c1m1(t-t1)=c2m2(t2-t)
则炉火的温度为:
t2=t+c1m1(t-t1)/(c2m2)
=59+4.2*10^3*0.2(59-15)/(0.46*10^3*0.1)
=862.5°C