Environmental Engineering Laboratories II

Instance: 2019/2020 - 2S

Cycles of Study/Courses

Last updated on 2020-05-11.

Fields changed: Calculation formula of final grade, Métodos de ensino e atividades de aprendizagem, Componentes de Avaliação e Ocupação, Fórmula de cálculo da classificação final, Métodos de ensino e atividades de aprendizagem, Componentes de Avaliação e Ocupação

Teaching language

Objectives

This course aims to provide students with practical knowledge on various subjects relevant to an environmental engineer, as well a consolidation of knowledge gain in other units. The teamwork and achievement reports are also skills that students should develop.

Learning outcomes and competences

At the end of this course unit students will be able to:
- Conduct tests of filtration at constant pressure and compare the results with those provided by theoretical models, and to characterize the cake in terms of compressibility;
- Measure pressure drops in fixed and fluidized beds, measure the porosity of a bed and, using different models, predict the pressure drop and porosity in fixed and fluidized beds, respectively.
- Determine experimentally the overall heat transfer coefficients in a serpentine immersed in a stirred tank under transient conditions and recognize, through its use, the advantages of an automatic data acquisition.
- Distinguish between different variables, those that most enhance the effect of radiation on the temperature measurement of an air flow and how to reduce the error introduced by the radiation in that measurement.
- Measure the concentration of CO2, CO and O2 using a portable analyzer and perform calculations to obtain other relevant information relating to combustion processes.
- Determine experimentally the response times of several temperature sensors in different conditions of measurement and identify the variables that can alter those response times.
- Determine experimentally the efficiency of some heating processes of water for domestic use.
- Characterize a soil (determination of the organic carbon fraction, bulk density, moisture content, cation exchange capacity).
- Use portable equipment for expeditious determination of the chemical composition of a soil and interpret the results obtained.
- Interpret the results of respirometry tests on different soil samples.
- Determine the acid generation potential from mine wastes (NAG + natural leaching).
- Write technical and scientific reports describing the results obtained in experimental work, analysis and main conclusions.
- Make oral presentation related with one of the subjects studied.

Working method

Pre-requirements (prior knowledge) and co-requirements (common knowledge)

Laboratories of Environmental Sciences I, II and III, Laboratories of Environmental EngineeringI,Fluid Mechanics, Thermodynamics, Heat and Mass Transfer.

Program

Within the framework of this course will be conducted the following laboratory works:

Module I: Mechanical Engineering Laboratory:
-Determination of income on water heating using a gas stove and electricity;
-Dynamic response of temperature sensors;
-Analysis of combustion products of a stove fuelled with natural gas;
-Effect of radiation on temperature measurement of air flow;
-Gas flow measurement according to ISO 10780-stationary emission sources.

Module II: Laboratory of Geo-Environment - Mining Eng.:
-Determination of organic carbon and organic fraction of a soil;
- Leaching test of a residue of a processing plant of a metallic ore;
-Determination of NAG (Net Acid Generation);
- Respirometry determination of a contaminated soil

Mandatory literature

Teaching methods and learning activities

Performance of scheduled laboratory experiments. Short exposures about the experimental work. The classes will run in two different laboratories (one in the DEM department and other in DEMec department).

Evaluation Type

Assessment Components

Amount of time allocated to each course unit

Eligibility for exams

- The laboratory experiments are compulsory for all students, including those under article 4, a) and b).

Calculation formula of final grade

The syllabus has only a a laboratory component, which is not amenable to evaluation in a single moment.

The final grade is obtained by the following formula:
Nf= (2*NM1+NM2)/3
Where:
NF-final grade; NM1-partial grade obtained at module I and NM2-partial grade obtained at module II.

In DEMec the final grade is calculated as follows: elaboration of reports with a weight of 60% of the final grade, filling the sheet with a summary of results, to be delivered at the end of each class, with a weight of 10% in the final grade, do mini tests about the information contained in the protocol of the experimental works and about the work itself to be delivery at the end of each laboratory class, with a weight of 30% in the final part. In the last class in DEMec there will be a mutual assessment of performance by the elements of each group in order to assign to each element the grade of the reports component in consonance with his/her actual effort.

In DEM module: The classification is calculated as follows: Attendance in class (10%), Individual reports due to each class taught (45%), Final I module test (45%).

Examinations or Special Assignments

Not applicable

Classification improvement

Not applicable. The syllabus has only a a laboratory component, which is not amenable to evaluation in a single moment.

Observations