Material and Energy Balances

Year
2
Academic year
2022-2023
Code
01009419
Subject Area
Chemical Engineering
Language of Instruction
Portuguese
Mode of Delivery
Face-to-face
Duration
SEMESTRIAL
ECTS Credits
6.0
Type
Compulsory
Level
1st Cycle Studies

Recommended Prerequisites

Calculus I and II, Linear Algebra and Analytic Geometry, General Chemistry, Analytical Chemistry, Organic Chemistry, Physics I and II. 

Teaching Methods

Classic lectures with illustration of the application of concepts and use of audiovisual media.

The practical classes consist of clarifying doubts and solving problems.

Learning Outcomes

1- Understand a process diagram and identify units of: separation, reaction, heat transfer;

2- Ability to read , interpret and use the information in a process flow sheet  or in a process description;

3 - Understand the concepts inherent to the mass and energy balance equation;

4- Competence to solve mass and energy balance problems using a systematic methodology;

5- Competence to solve simple transient state material balances;

6- Ability to identify the domains in the phase diagrams and to learn how to get quantitative information. 

Work Placement(s)

No

Syllabus

i) Material Balances: The Conservation Principles; Material balances in non-reacting systems; Special multiunit configurations (recycle, bypass and purge streams); Balances in reacting systems. The rate of reaction concept and limiting reactant / conversion. Species and element balances in reacting systems.

(ii)  Energy Balances: The law of conservation of energy; Determination of enthalpies. Processes at non-constant temperature. Processes with phase changes. Heats of phase transition. Enthalpy of mixtures. Energy balances for reacting systems. Enthalpy of reaction. Definition of references states. Heat of formation and their use. Heat of combustion. Mean heat capacity of gases.

  (iii) Material balances in transient state.

 (iv) Phase equilibrium diagrams. Binary systems. Lever rule. Eutectic systems. Cooling curves. Peritetic systems. Transformations classification. Ternary systems. Triangular diagrams. Partial miscibility systems of 3 liquids. Systems with solid phases.

Head Lecturer(s)

Fernando Pedro Martins Bernardo

Assessment Methods

Assessment
Mini Tests: 30.0%
Exam: 70.0%

Bibliography

Felder, R.M., Rousseau, R.W., Elementary Principles of Chemical Processes, 4th edition, John Wiley & Sons, Canada, 2005.

Himmelblau, D.M. e Riggs, J.R., “Basic Principles and Calculations in Chemical Engineering”, 8ª ed., Prentice Hall, New York, 2012

Fonseca, I.M.F, Ana Paula V. Egas, Fundamentos de Balanços de Energia, Imprensa da Universidade de Coimbra, 2009.

Balanços Mássicos e Análise do Grau de Liberdade, Caderno de Engenharia Química Nº 9, I. M. A. Fonseca, 2007.

 Reklaitis, G.V., Introduction to Material and Energy Balances, 1st edition, John Wiley & Sons, USA, 1983.

Atkins, P., Paula, J. Physical Chemistry, Oxford University Press Inc., N.Y., 11th edition, 2017.

John, V.B., Understanding Phase Diagrams, Palgrave, London, 2014.

Francis, A.W., Liquid-Liquid Equilibriums, John Wiley & Sons, New York, 1963.

West, D.R.F., Ternary Equilibrium Diagrams, Chapman and Hall Ltd, London, 1982.