Educational guide
IDENTIFYING DATA 2024_25
Subject REFRIGERATION ENGINEERING Code 00708029
Study programme
0708 - GRADO EN INGENIERÍA MECÁNICA
Descriptors Credit. Type Year Period
6 Optional Third Second
Language
Castellano
Prerequisites
Department ING.MECANICA,INFORMAT.AEROESP.
Coordinador
BÚRDALO SALCEDO , GABRIEL
E-mail gburs@unileon.es
-
Lecturers
BÚRDALO SALCEDO , GABRIEL
DIEZ GONZALEZ , JAVIER
Web http://www.unileon.es/estudiantes/estudiantes-grado/oferta-de-estudios/planes?id=0708029&curso=2012
General description Calculation and design of an industrial refrigeration systems, study of different production systems in low temperatures, especially those based on mechanical compression of a condensable fluid.
Tribunales de Revisión
Tribunal titular
Cargo Departamento Profesor
Presidente ING.MECANICA,INFORMAT.AEROESP. CASTEJON LIMAS , MANUEL
Secretario FERNANDEZ ROBLES , LAURA
Vocal LOPEZ RODRIGUEZ , DEIBI
Tribunal suplente
Cargo Departamento Profesor
Presidente ING.MECANICA,INFORMAT.AEROESP. FERNANDEZ DIAZ , RAMON ANGEL
Secretario CASTRO SASTRE , MARIA ANGELES
Vocal ING.MECANICA,INFORMAT.AEROESP. DOMINGUEZ FERNANDEZ , DIEGO

Competencias
Code  
A18182
B5632
B5634
B5637
B5638
B5642
B5643
B5646
B5647
B5651
B5652
C2 CMECES2 That students know how to apply their knowledge to their work or vocation in a professional manner and possess the skills that are usually demonstrated through the development and defense of arguments and the resolution of problems within their area of study.
C3 CMECES3 That students have the ability to gather and interpret relevant data (normally within their area of study) to make judgments that include reflection on relevant issues of a social, scientific or ethical nature.
C4 CMECES4 That students can transmit information, ideas, problems and solutions to both a specialised and non-specialised audience
C5 CMECES5 That students have developed those learning skills necessary to undertake further studies with a high degree of autonomy

Learning aims
Competences
Ability to carry out practical laboratory set-ups and experiments. B5637
B5651
 C2
Applied knowledge of cooling production systems and heat transfer mechanisms for subsequent application to the design of heat transfer equipment, calculation of thermal loads and design of mechanical compression and absorption machines. B5632
Understanding of knowledge in the area of refrigeration engineering supported by advanced textbooks, including aspects involving knowledge from the cutting edge of the industrial sector. B5632
B5642
Capacity for autonomous learning. B5646
 C5
Ability to work individually and as part of a team. B5647
Analytical and problem-solving skills. B5643
Ability to make and interpret calculations of experiments performed. B5652
Interpretation of relevant data sets to make judgements including reflection on relevant scientific issues. B5638
 C3
Ability to present their work clearly and attractively. C4
Ability to convey information, ideas, problems and solutions to both specialised and non-specialised audiences. C4
Ability to pursue studies in refrigeration engineering with a high degree of autonomy. B5634
 C5
Ability to design, calculate and maintain refrigeration installations. A18182

Contents
Topic Sub-topic
Block I.- INTRODUCTION TO REFRIGERATION PRODUCTION 1.- Concept of refrigeration.
2 .- Methods of cold production.
Refrigeration machines. Refrigeration capacity.
4 .- Inverse Carnot cycle.
Block II.- SIMPLE SATURATED REFRIGERATION CYCLE 1.- Theoretical cycle.
2.- Effect of the condensation temperature.
3.- Effect of evaporation temperature.
4.- Vapor superheating.
5.- Subcooling of the liquid.
6.- Pressure losses.
Block III.- REFRIGERANTS 1.- Concept of coolant.
2 .- Ideal characteristics of refrigerants.
3 .- Name and types.
4 .- Characteristics of the most commonly used refrigerants.
5 .- Humidity in the facilities.
6 .- Royal Decree 552/2019.
7 .- The environmental problems.
Block IV.- HEAT BALANCE 1.- Introduction.
2.- Calculation of the heat balance.
3.- Resolution of practical cases.
Bloque V.- SISTEMAS FRIGORÍFICOS POR COMPRESIÓN MÚLTIPLE 1.- General considerations.
2.- Direct multiple compression.
3.- Indirect multiple compression.
4.- Multiple evaporation.
5.- Examples of practical application.
Block VI.- DESIGN OF THE REFRIGERANT DISTRIBUTION NETWORK 1.- Principios de diseño.
2.- Diseño de tuberías.
3.- Dimensionamiento de tuberías.
4.- Pérdidas de carga toleradas.
5.- Determinación del diámetro.
Block VII.- REFRIGERATING COMPRESSORS 1.- Modelo tipo de compresor.
2.- Ciclo Standard.
3.- Estudio del ciclo de un compresor.
4.- Rendimiento volumétrico.
5.- Rendimiento del ciclo.
6.- Producciones.
7.- Dimensionado del compresor.
Block VIII.- CONDENSERS AND RECOVERY TOWERS 1.- Function of the capacitors.
2.- Conditions of the capacitors.
3.- Types of capacitors.
4.- Selection of condensers.
5.- Cooling towers. Operation, calculation and hygienic-sanitary problems.
Block IX.- EVAPORATORS 1.- Mission of the evaporator.
2 .- Types of evaporators.
3 .- The evaporators and indirect refrigeration systems.
4 .- Secondary refrigerants.
5 .- Cooling capacity of the evaporator.
6.- Design and selection of the evaporator.
7.- Defrost.

Planning
Methodologies  ::  Tests
  Class hours Hours outside the classroom Total hours
Problem solving, classroom exercises 17 43 60
 
Laboratory practicals 6 0 6
Tutorship of group 2 0 2
 
Lecture 30 45 75
 
Extended-answer tests 3 0 3
2 2 4
 
(*)The information in the planning table is for guidance only and does not take into account the heterogeneity of the students.

Methodologies
Methodologies   ::  
  Description
Problem solving, classroom exercises The professor will guide the students in the application of concepts and theoretical results in the resolution of problems, encouraging critical reasoning at all times. Exercises will be proposed and students will solve them, thus acquiring skills in the use of the necessary tools for problem solving.
Laboratory practicals The professor will guide the students in the knowledge of safety and behavior rules, in the use of the basic instruments necessary for the assembly and disassembly of refrigeration equipment and in the use of instruments for the design, calculation and maintenance of refrigeration installations based on the analysis of the operating parameters of the refrigeration systems studied. The student will carry out simple experiences that complement and exemplify the contents developed in the classroom, in which he/she will have to apply the acquired problem solving tools.
Tutorship of group Professor meeting with a small group of students conceptually based on learning theories rather than teaching theories.
Lecture In the theoretical work sessions in the classroom, the professor will introduce, by means of illustrative examples, the concepts, results and methods of the subject.

Personalized attention
 
Problem solving, classroom exercises
Description
In addition to the group tutorials, the student can count on the help of the teacher in individual tutorials, which are not compulsory. These tutorials will take place in the professor's office, on specific days and times, or by prior appointment, at the student's request via e-mail.

Assessment
  Description Qualification
Extended-answer tests Knowledge and understanding of the subject. Exams with problems
There will be two evaluation tests, each of which will count for 50% of the final grade. 		100%
Attendance at arranged visits to companies in the sector.
Attendance at tutorials 		0%
 
Other comments and second call
Throughout the course there will be a continuous assessment in which the student will take a first test in April and a second test at the beginning of June. In order to eliminate the subject, the student must obtain a grade equal to or higher than 5 points in each of the parts. The mark for the first exam will be the average of the two parts provided that the student passes both tests. If the student does not pass any of the exams, he/she will make up the exam(s) in the period available for the first sitting.

In the second sitting, the student will take the exam for the whole subject and must obtain a grade equal to or higher than 5 points.

Sources of information
Access to Recommended Bibliography in the Catalog ULE

Basic PINAZO OJER, JOSÉ MARÍA, Cálculos en instalaciones frigoríficas, Servicio de Publicaciones Universidad Politécnica de Valencia, 1995
GONZÁLEZ MURCIA, JUAN, Controles en el frío comercial, industrial y aire acondicionado. Teoría y práctica, AMV, 2017
COOK, NORMAN, Curso práctico de refrigeración y aire acondicionado, AMV, 2001
LAMÚA MANUEL, et al., Guía de almacenamiento frigorífico, AMV, 1995
SÁNCHEZ Y PINEDA DE LAS INFANTAS, Mª T, Ingeniería del Frío: Teoría y Práctica, AMV, 2000
LLORENS MARTÍN, et al., Ingeniería Térmica, CEC, 1999
CABEZA,FRANCIS, Las bases del frío. De la teoría a la práctica, Didafrío-Libros y Programas didácticos frigoríficos, 2005
MADRID VICENTE, ANTONIO, Seguridad en las instalaciones frigoríficas, AMV, 2018

Complementary


Recommendations


Subjects that it is recommended to have taken before
THERMODYNAMICS AND FLUID MECHANICS / 00708017