Chemical Engineering
This law states that mass cannot be created or destroyed in a chemical reaction
The Law of Conservation of Mass
This is the study of energy transformations, particularly the flow of heat and work in systems
Thermodynamics
This unit operation involves the transfer of heat between fluids without mixing
Heat exchanger
This term refers to the automatic regulation of a process variable to maintain desired output levels
Process control
This is the process of converting raw materials into useful products, often involving chemical reactions
A chemical process
The second law of thermodynamics states that the total entropy of an isolated system can only do this over time
Increase
In this operation, particles are removed through use of a filter medium
Filtration
This is a closed-loop control system used in chemical engineering to maintain a process variable at a setpoint
A feedback control system
This term refers to the ratio of the mass flow rate of a component to the total mass flow rate in a process
A mass fraction
This property of a substance is defined as its energy per unit temperature and is crucial in defining the relationship between heat and work
Heat capacity
This heat exchanger operates by having the hot stream flow opposite to the cold stream
Countercurrent heat exchanger
This type of diagram shows the relationships between process variables and controllers in a control system
A block diagram
This principle states that the rate of change of the concentration of a component in a system is proportional to the rate of its generation or consumption
The rate law
This is the process where heat flows from a hot object to a cooler object until thermal equilibrium is reached
Heat transfer
This unit operation involves the separation of components based on differences in their boiling points
Distillation
Adding this element gives the ability to provide precise control over the timing of operations
The basic concept of a chemical engineer’s work is often defined by this type of diagram that represents flows of materials through a system
A process flow diagram (PFD)
If a system does work on the surroundings, the value of work will be...
Negative
This unit operation carries out a reaction where there are no inlet or outlet streams
A batch reactor
Addition of this element to a P controller eliminates the offset
Integral term