Dipartimento di Scienze della Vita e dell'Ambiente - Guida degli insegnamenti (Syllabus)
Students should master the major field body of knowledge covered in the following courses: mathematics and physics
The course is developed through series of lectures, divided into blocks on specific topics and at the end of each phase of exercises designed to introduce students to the written test exam. As part of the course students can access the course materials in electronic form on the university website consists of: as pdf files on the slides shown during the lectures, the file in pdf related to numerical exercises carried out in previous academic years and the current one, the pdf's related to the tests of previous years and the work already undertaken in the current academic session, the results of the examinations.
After completion of this course the student will learn through lecture and practice how heat flows through different materials to develop a better understanding basic tools of conduction, convection and radiation heat transfer for problems which involve the overall heat transfer coefficient. phenomenological aspects, mathematical formulation (basic conservation laws and constitutive laws) and analytical and
numerical resolution techniques. Methodologies of resolution of problems of technological interest which different formsof combined heat transfer are presented
Learners will be able to understand the general approach to the control of heat, air, and moisture to provide the theoretical background for the analysis of the building enclosures. The student will be initiate to the study of reversed cycles, thermal comfort to learn the environmental aspects of the processes. Formation in heat transfer by conduction, convection and radiation and fluid dynamics:
Ability to apply the knowledge
The student will also acquire the following professional skills: ability to make simple energy analysis, for example, the fuel used to cool the buildings on the territory in order to make strategies for the reduction of energy consumption and sending in the gas atmosphere greenhouse. Do anyway energy issue advice to the decision-maker with the aim of producing strategies to pursue environmental sustainability, reduce the consumption of fossil fuels and reduce the phenomenon of climate change.
The exercises, performed by students in a collaborative way, but also independently, allow to learn, as well as the examination procedures also wrote the cooperation mechanisms in the development of energy strategies for environmental sustainability. These practices allow to acquire independent judgment, ability to learn and draw conclusions independently, but also to develop communication skills, enhanced by teamwork.
Heat and mass transfer
The importance of heat transfer, the fundamental concepts and the basic modes of heat transfer. The Fourier low of conduction and the general heat conduction equation. The thermal conductivity. Steady state heat conduction in one dimension. The fundamental low of convection, The Newton low the boundary layer concept. Forced convection and natural convection. Heat transfer by radiation, the Stefan-Boltzmann low, black body radiation, Radiation from real surfaces and ideal grey surfaces. Solar radiation, reflection, transmission and absorption, combined heat transfer. Heat loss calculation between indoors and outdoors in a building.
The calculation of condensation risk, vapour resistivity, surface and interstitial condensation. Thermal comfort. Reversed Cycles, the reversed Carnot Cycle, Unit for refrigerating effect. Heat and moisture air, composition of air, the use of psychrometric chart.
the phenomenon of steam diffusion, temperature and saturation pressure, partial steam pressure , comparison between the diagrams, The calculation of condensation risk, vapour resistivity, surface and interstitial condensation. graphical method and analytical methods of analyses,
Physiological comfort, environmental comfort, thermo-hygrometric comfort. Human body as a thermodynamic system, the exchange of mass and energy, equation of comfort, energy balance of human body, Fanger and Gagge theories, metabolism, unit non-conventional (meth, clo), heat transfer by heat sensible and latent, inner and outer, the indices of comfort.
Methods for assessing learning outcomes:
Written and oral exam will be given at the end of course at scheduled time.
Criteria for assessing learning outcomes:
The first deals with the solution of a numerical exercise related to the calculation of energy balance and exchanges of the technical systems considered in the course. This way we can assess the ability of the student of applying the knowledge and understanding of the analysis and solution techniques, and of making judgment and to correctly use the units of measurement.
The second one consists of some questions dealing with theoretical aspects of each main topic of the course : heat transfer, thermodynamics of moist air, thermal comfort.
Criteria for measuring learning outcomes:
The written test must be passed with a minimum score of 18/30 for access to the oral test. The oral test rating is assigned with minimum score of 18/30, considering the level of detail of the answers given by the student to questions on the topics of the course
At the end of the written and oral test is given the vote of thirty. It confirms the exam when the vote is greater than or equal to 18. It is expected to be awarded the highest marks (30 cum laude).
Criteria for conferring final mark:
The average of the marks obtained in the two tests (written and oral) determines the final grade exam. 30 cum laude is given when the student has demonstrated full mastery of the subject.
Çengel Y.A., Termodinamica e Trasmissione del Calore - seconda edizione, McGraw-Hill Companies srl, Milano, 2013.
Lecture notes available for download from the teacher page of Univpm web site