Lecture 3 Flashcards
energy transfer equation
level 1
Q=UA delta T
energy transfer equation in regards to jacket and batch
level 1
Q = U A (Tj - Tb)
Tj = temperature of jacket
Tb = temperature of batch
Energy output from the reaction will be ( equation)
Q = (delta H reaction) V R
Energy released in vessel equation
Q = G delta H reactor
Energy transferred to jackets
Q = UA delta T lm
Log mean temperature difference equation
((Tb - Tout)-(Tb-Tin))/(ln((Tb-Tout)/(Tb-Tin))
What a reaction calorimetry can provide
- specific heat capacities of the solution
- enthalpies of reaction
- energy evolution rates
- gas evolution rates
Mass balance equation
In - Out ± reaction = accumulation
Reaction rate of loss (A) = Physical disappearance (A)
-rA V = dNa/dt
or
rA V = - dNa/ dt
Q equation
Q = m Cp dTb/dt
Total batch time is the sum of
- charging
- dissolution
- heating to reaction temperature
- cooling batch
- discharge of contents
- cleaning in place
time required to complete all the operations required to create one batch of product materials
batch time
minimum time needed to complete all of the operations required to create a batch of product
cycle time
