Resistor furnaces
E = QMS + QC = PN t + ∫t1tP P(t) dt + PO (t - tf)
QMS = PN t800 W/m2 for a Po 39000 W ➔ R1 + R3 + R3 = Qη - θa/Po ≈ 0.2385°C/W
R2 = 0.216/°C ⇒ R2 ≈ 0.4 mm
AΕ = 25.88 m2 A2m = 16.57 m2
R2 = θθ 26/°C/W => Pο = 5166 W
Pc = 703 W/m2Θe = Θi + Ql/ DlAl = 87°C
Θe = 60°C
Qas = Qm + Ql = Qm = Cl(Θl,m - Θl) + C2(Θ2,m- ΘA)
Qre = CmΧatmNatm(Θm-Θ1)
Volume chamber
Test methods
I = Qas/ Θ10Θe
Total losses Θe = Θ-1
Cooling velocity Θas ≈ Θco(ε1 + ε2 + ...)
Θas ≈ Θco(2/ Al)
Resistor design
Resistor lifetime
D = K √(A max temperature / A working temperature)
N i / C r => k ≈