IDENTIFYING DATA 2023_24
Subject (*) THERMAL MACHINES LABORATORY Code 20224111
Study programme
Bachelor's Degree in Mechanical Engineering (2010)
 Cycle 1st
Descriptors Credits Type Year Period
3 Compulsory Third 1Q single exam
Language
Castellà
Department Mechanical Engineering
Coordinator
BOUROUIS CHEBATA, MAHMOUD
 E-mail mahmoud.bourouis@urv.cat
francisco.oliva@urv.cat
Lecturers
BOUROUIS CHEBATA, MAHMOUD
OLIVA CANO, FRANCISCO
Web
General description and relevant information <p><b>GENERAL DESCRIPTION OF THE SUBJECT</b></p><p> Practical laboratory of heat transfer, refrigeration and air compression. In the heat transfer practices, students experience the three mechanisms of heat transfer: conduction, convection and radiation. With the experimental measurements they carry out energy balances and calculate heat transfer coefficients in different types of exchangers applying the knowledge gained in the Thermal Engineering subject. In the practice of vapour compression refrigeration, cold production is studied through mechanical compression cycles. In the air compression practice, the operation of piston compressors is studied. </p>

Competences
Type A Code Competences Specific
 A1.1 Consistently apply knowledge of basic scientific and technological subjects pertaining to engineering
 A1.2 Design, execute and analyse experiments related to engineering
 A1.4 Ability to apply the principles and methods of quality control (G8)
 A5.3 Applied knowledge of thermal engineering (M3)
Type B Code Competences Transversal
 B1.1 Communicate information clearly and accurately to diverse audiences. (CT5)
 B3.3 Work autonomously and as part of a team with responsibility and initiative. (CT4)
Type C Code Competences Nuclear

Learning outcomes
Type A Code Learning outcomes
 A1.1 Aplica correctament els principis de l'enginyeria tèrmica.
 A1.2 Aprèn a planificar una experimentació, la realitza, la interpreta i valora els resultats de manera crítica. Planifica racionalment l'execució d'una sèrie de tasques a dur a terme en grup i en un temps limitat. Treballa en equip amb plena responsabilitat individual. Treballa seguint sempre les normes de seguretat.
 A1.4 Aplica els criteris de qualitat a la selecció i operació de sistemes de refrigeració industrial.
 A5.3 Obté correlacions dels coeficients de convecció i dels coeficients de fricció a partir de les mesures experimentals realitzades en un bescanviador de calor.
Descobreix, comprova i aplica experimentalment els coneixements teòrics dels processos. Fomenta les habilitats d'observació i interpretació del funcionament de les instal·lacions i dels fenòmens que tenen lloc.
Type B Code Learning outcomes
 B1.1 Intervé de forma efectiva i transmet informació rellevant, amb un llenguatge apropiat a la situació.
Plan their communications: generate ideas, search for information, select and order the information, make schemes, determine the type of audience and the objectives of the communication, etc.
Draft documents with the appropriate format, content, structure, language accuracy and register, and illustrate concepts using the appropriate conventions: formats, titles, footnotes, captions, etc.
Prepare their presentations and use a variety of presentation strategies (audiovisual support, eye contact, voice, gesture, time, etc.).
 B3.3 Participate actively and share information, knowledge and experience.
Finish the tasks assigned to them in the time allowed and with the resources available.
Accepta i compleix les normes del grup.
Col·labora activament en la planificació de la feina en equip, en la distribució de les tasques i terminis requerits.
Type C Code Learning outcomes

Contents
Topic Sub-topic
Practice 1 Heat transfer by conduction, convection and radiation
• Determination of the conductivity of an insulating material.
• Study of a heat transfer process by natural convection and radiation acting in parallel.
• Obtaining the correlation of natural convection on a flat wall.
• Determination of the emissivity of a shiny surface.
Practice 2 Heat exchangers test bench
• Calculation of the heat exchanged.
• Calculation of the efficiency of heat exchangers.
• Calculation of the overall experimental heat transfer coefficient.
• Calculation of convection coefficients based on correlations and comparison of global coefficients.
Practice 3 Plate heat exchanger
• Obtaining the correlation of the friction factor as a function of the Reynolds number.
• Obtaining the correlation of the Nusselt number as a function of the Reynolds and Prandtl numbers.
Practice 4 Refrigeration by mechanical vapour compression
• Experimental determination of the heat exchanged in the condenser and evaporator and the work of the compressor.
• Representation of the cycle in a P-h diagram.
• Evaluate the influences of each of the operating parameters.
Practice 5 Single and double stage air compression
• Study of the operation of piston compressors.
• Calculate the typical quantities necessary to understand its operation.
• Experimentally verify the optimal working conditions, being able to choose between working in one or two stages and incorporating intermediate cooling.

Planning
Methodologies  ::  Tests
  Competences (*) Class hours
 Hours outside the classroom
 (**) Total hours
Introductory activities
A1.2
B1.1
B3.3
 5 0 5
Laboratory practicals
A1.1
A1.2
A1.4
A5.3
B1.1
B3.3
 18 45 63
Personal attention
A5.3
B1.1
 2 0 2
 
Oral tests
B3.3
 2 0 2
Practical tests
A1.1
B1.1
B3.3
 3 0 3
 
(*) On e-learning, hours of virtual attendance of the teacher.
(**) The information in the planning table is for guidance only and does not take into account the heterogeneity of the students.

Methodologies
Methodologies
  Description
Introductory activities Activities aimed at making contact and collecting information from the students and presentation of the subject.
Laboratory practicals Realization of the experiences, registration and analysis of the experimental data and preparation of reports.
Personal attention Resolution of doubts about the calculation methods to be used and the results obtained.

Personalized attention
Description

Tutorials will take place online, by email or via Teams meetings. E-mail: mahmoud.bourouis@urv.cat

Assessment
Methodologies Competences Description Weight        
Laboratory practicals
A1.1
A1.2
A1.4
A5.3
B1.1
B3.3
 Evaluation of the results and reports of the practices. 45%
Oral tests
B3.3
 Individual or group presentation of one or more of the practices carried out in the laboratory. 40%
Practical tests
A1.1
B1.1
B3.3
 Work in the laboratory (Attitude, punctuality, mode of development of the practice, and prior preparation of the same). 15%
Others  
 
Other comments and second exam session
1. A subject which, due to its eminently practical nature, only has a single call for assessment.

2. Students who enroll in this subject will not be able to request the additional call for exams.

3. The final score of the subject will include the attendance requirement.

Sources of information

Basic Mahmoud Bourouis, Laboratorio de Máquinas Térmicas, Universitat Rovira i Virgili, 2023
Incropera, F.R.; DeWitt, D.P. , Fundamentos de transferencia de calor , Prentice Hall; 4a Ed., Mèxic 1999
Çengel, Y.A.; Boles, M.A., Termodinámica, McGraw-Hill,

Complementary Moran, M.J.; Shapiro, H.N., Fundamentos de Termodinámica Técnica, Editorial Reverté S.A.,

Recommendations


Subjects that it is recommended to have taken before
THERMAL ENGINEERING I/20224108
THERMAL ENGINEERING II/20224109
INDUSTRIAL HEATING AND COOLING/20224110
(*)The teaching guide is the document in which the URV publishes the information about all its courses. It is a public document and cannot be modified. Only in exceptional cases can it be revised by the competent agent or duly revised so that it is in line with current legislation.