Ile energi nalezy dostarczyc aby ogrzac powietrze w pokoju o wymiarach 5m x 4m x 3,5m od temperatury 0`C do temperatury 20`C. Cw powietrza = 1000J/Kg*`C, gestosc zelaza 7800KG/m szescienny (3)
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
v = 5m·4m·3,5m = 70m³
d = 1,2kg/m³
m = vd = 70m³·1,2kg/m³ = 14kg
ΔT = 20°C
Cw = 1000J/kg·C
Q = m·Cw·ΔT
Q = 14kg·1000J/kg·C·20°C = 280000J = 280kJ