integration of solid oxide fuel cells and ... - Ea Energianalyse

3. COMPONENT DESCRIPTION
undergoes a phase transition which by far gives a higher heat capacity
flow.
ɛ = T chill,i − T chill,o
T chill,i − T r,i
(3.38)
The chilling power of the evaporator is calculated by the enthalpy
change of the chilling water. This change is determined by the energy
balance. The heat ingress from the surroundings defined by the
parameter ˙Q loss , should be either zero or a negative number.
˙Q = Ḣ chill,i − Ḣ chill,o (3.39)
Ḣ r,i + Ḣ chill,i = Ḣ r,o + Ḣ chill,o + ˙Q loss (3.40)
The mass balance is specified for the refrigerant as well as the chilling
water cycle.
ṁ r,o = ṁ r,i (3.41)
ṁ chill,o = ṁ chill,i (3.42)
The pressure losses (given as a negative pressure increases) are defined
as two different ∆P parameters:
p r,o = p r,i + ∆p r (3.43)
p c,o = p c,i + ∆p chill (3.44)
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