IDENTIFYING DATA

2021_22

Subject (*)

THERMAL ENERGY CONVERSION TECHNOLOGIES

Code

20755107

Study programme

Energy Conversion Systems and Technologies (2019)

Cycle

2nd

Descriptors

Credits

Type

Year

Period

4.5

Compulsory

First

Language

Anglès

Department

Mechanical Engineering

Coordinator

CORONAS SALCEDO, ALBERTO

E-mail

alberto.coronas@urv.cat

Lecturers

CORONAS SALCEDO, ALBERTO

Web

General description and relevant information

<div><div>This course is focused on the technologies to transform heat  in others forms of energy like  </div><div><ul><li>HEAT at higher temperature level ( upgrading heat ) ( heat pumps)</li><li>POWER or </li><li>COLD   (Refrigeration machines) </li></ul></div><div>Some of these technologies are not news for you, but in this course we will study other technologies not so well known but interesting for using with renewable (thermal) energy sources in the decarbonization of the economy </div></div>

Competences

Type A	Code	Competences Specific
	CE1	Understand, obtain and model the thermodynamic and transport properties of multicomponent fluids for energy conversion systems and technologies.
	CE2	Understand, model and select the viability of energy conversion technologies including the most suitable renewable energies for any given application.
Type B	Code	Competences Transversal
	CT3	Solve complex problems critically, creatively and innovatively in multidisciplinary contexts.
	CT5	Communicate complex ideas effectively to all sorts of audiences.
Type C	Code	Competences Nuclear

Learning outcomes

Type A	Code	Learning outcomes
	CE1	Use tools for thermodynamic modelling and the properties of fluids for adsorption refrigerators and adsorption heat pumps. Calculate thermodynamic properties of mixtures for adsorption systems.
	CE2	Understand the different technologies for thermal heat pumps and refrigeration systems. Calculate the performance of adsorption refrigerators and adsorption heat pumps. Identify different types of adsorption refrigerators and adsorption heat pumps. Understand the principal components of adsorption refrigerators, heat pumps and power production cycles.
Type B	Code	Learning outcomes
	CT3	Recognise the situation as a problem in a multidisciplinary, research or professional environment, and take an active part in finding a solution. Follow a systematic method with an overall approach to divide a complex problem into parts and identify the causes by applying scientific and professional knowledge. Design a new solution by using all the resources necessary and available to cope with the problem. Draw up a realistic model that specifies all the aspects of the solution proposed. Assess the model proposed by contrasting it with the real context of application, find shortcomings and suggest improvements.
	CT5	Produce quality texts that have no grammatical or spelling errors, are properly structured and make appropriate and consistent use of formal and bibliographic conventions. Draw up texts that are structured, clear, cohesive, rich and of the appropriate length, and which can transmit complex ideas. Draw up texts that are appropriate to the communicative situation, consistent and persuasive.
Type C	Code	Learning outcomes

Contents

Topic	Sub-topic
CHAPTER 1. Fundamentals of Thermodynamics thermal energy conversion systems.	Definitions and Classification of Heat Conversion Systems. Solutions exchanging heat at two and three temperatures.
CHAPTER 2. Thermodynamic properties of working fluids.	Introduction. Thermodynamic diagrams of pure working fluids and mixtures. Thermodynamic properties required for working mixtures of absorption systems. thermodynamic PTX (Y) and HTX (Y) diagrams of H2O / LiBr and NH3 / H2O mixtures. Other working mixtures
CHAPTER 3. Basics of absorption heat pumps and chillers.	Introduction. Ideal cycle of heat pump and refrigeration thermal systems. Single-stage absorption cycle. Conventional working mixtures. Performance indicators. Multistage absorption cycles. The current state of absorption technology. Commercial and market aspects
CHAPTER 4. Modelling processes in components of absorption refrigeration systems.	Introduction. Adiabatic mixing with fluid mixtures. Desorption. Absorption. Evaporation and condensation. Pumping and expansion processes in valves and throttling devices. Heat recovery in heat exchangers. Ammonia purification in ammonia/water systems. Heat transfer in components of absorption systems
CHAPTER 5. Absorption refrigeration systems. Technologies and modelling	Introduction. Water systems / LiBr: technological aspects, thermodynamic modelling and analysis of the operation of the basic cycle. Representation of the cycle in a Duhring diagram (PTX). Thermodynamic modelling with heat transfer with external circuits. Multistage cycles. Double-effect, triple-effect and half-effect cycles. Ammonia/water cooling systems; technological aspects. Thermodynamic modeling and analysis of the. operation of the basic cycle. Representation of the cycle in a Duhring diagram (PTXY) Improvement of the operation of the basic cycle. GAX cycles. Concept, configurations and design of the cycle.
CHAPTER 6. Absorption Heat Pumps and Heat Transformers	Introduction. Absorption heat pumps: working fluids and cycle configurations. Absorption heat pumps type I: Operational envelop of Water/LiBr and commercial products. Absorption heat transformers technology and commercial products. Modelling of the single-stage absorption heat transformer cycle. Modelling of the heat transformer with external circuits heat transfer.
CHAPTER 7. Absorption Power Systems and combined absorption systems for power and Refrigeration	Introduction. The Kalina Cycle; The basic Kalina Cycle. Kalina Cycle Systems for low- mid and high-grade heat sources.Modelling and performance. Combined absorption systems for refrigeration and power production. Configurations for low and mid-grade heat sources. Modelling and performance .

Planning

Methodologies :: Tests

Competences

(*) Class hours

Hours outside the classroom

(**) Total hours

Introductory activities

0.5

videoconferencing

Reading written documents and graphs

Self-monitoring activities

Problem solving, exercises

Practical cases/ case studies in the classroom

Personal attention

(*) 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 taking contact and collecting information from students. There will also be a presentation of the subject describing the learning objectives, contents, methodologies, evaluation systems and skills to be worked on. This session will be first in each non-attendance course
videoconferencing	Presentation of the subject, the contents and activities through web conference (Abobo Connect). This activity requires a synchronous presence of students and teachers. This activity will be recorded at the time of its development to facilitate subsequent consultation
Reading written documents and graphs	Reading and working of the documentation published in different formats, prepared by the teaching staff, with the aim of facilitating the development of competences of a more theoretical nature and those knowledge necessary for the development of practical activities. It does not require a synchronous presence of students and teachers
Self-monitoring activities	Activities proposed to the student to self-evaluate their progress in the subject. They can be performed as many times as they want and will help the student to know what aspects or contents should reinforce
Problem solving, exercises	Analysis and resolution of a specific problem or practical exercise related to the topic of the subject. Its scope is limited and of limited extension. Through the use of the virtual campus.
Practical cases/ case studies in the classroom	Approach to a situation (real or simulated) in which the student must work to give a solution to the topic, solve a series of specific questions or make a global reflection
Personal attention	This guidance is carried out by the teacher of each subject with the students enrolled in the same. The purpose of this guidance is to plan, guide, dynamise, monitor and evaluate the student's learning process, taking into account their profile interests, needs, previous knowledge, etc.) and the characteristics / requirements of the context EEES, academic / professional profile, social-labor demand, etc.).

Personalized attention

Description

This guidance is carried out by the teacher of each subject with the students enrolled in the same. The purpose of this guidance is to plan, guide, dynamise, monitor and evaluate the student's learning process, taking into account their profile interests, needs, previous knowledge, etc.) and the characteristics / requirements of the context ( EEES, academic / professional profile, social-labor demand, etc.). The actions that will be carried out are the following: - Welcome to the subject - Weekly dynamism - News and events - Resolution of academic doubts - Retroaction with the correction of activities - Abandonment of the subject - End of the subject The development of these actions will be carried out with the support of the tools offered by the Virtual Campus Moodle, within the virtual classroom of each subject. So that the best orientation and possible follow-up is offered considering the face-to-face or virtual modality of each subject.

Assessment

Methodologies

Competences

Description

Weight

Self-monitoring activities

Activities proposed to the student that serve to enable the student to self-regulate their learning. You can repeat it as many times as you like and for the final evaluation it will be considered the highest score obtained

Problem solving, exercises

Formulation, analysis, resolution and debate of a problem or exercise, related to the topic of the subject.

Practical cases/ case studies in the classroom

Approach to a situation (real or simulated) in which the student must work to provide an argued solution to the topic, solve a series of specific questions or make a global reflection.

Others


Other comments and second exam session
The second call will consist of a global examination of the content of the subject, and its mark will contribute to 70% of the final mark. The remaining 30% will correspond to the marks of the course activities.

Sources of information

Basic	Keith E. Herold, Reinhard Radermacher, and Sanford A. Klein;, Absorption Chillers and Heat Pumps, CRC Press, 2015

Complementary	ASHRAE, ASHRAE Handbook- Fundamentals. Absorption Refrigeration Cycles, ASHRAE, 2017 Tangellapalli Srinivas, N. Shankar Ganesh, R. Shankar, Flexible Kalina Cycle Systems, Apple Academic Press, March 2019 I. Dincer, T.A.H. Ratlamwala, Integrated Absorption Refrigeration Systems, Springer. Series: Green Energy and Technology, 2017 G. Alefeld and R. Radermacher, G. Alefeld and R. Radermacher;, CRC Press, 1994

Recommendations

(*)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.