CDU	Crude Distillation Unit
LSTM	Long Short-Term Memory neural network
XGB	Extreme Gradient Boosting
NTU	Number of Transfer Units
ɛ-NTU	Effectiveness—Number of Transfer Units method
HEN	Heat Exchanger Network
CFD	Computational Fluid Dynamics
NN	Neural Network
RNN	Recurrent Neural Network
TEMA	Tubular Exchanger Manufacturers Association
STD	Standard Deviation
MSE	Mean Squared Error