MAEN4600 Ventilation Design Course description

The course provides introduction to modern and energy-optimal demand-controlled ventilation. Requirements, design, handover, function control and operation are topics covered.

None beyond the admission requirements.

After completing this course, the student has the following learning outcomes, defined in knowledge, skills and general competence:KnowledgeThe student

• has advanced knowledge of ventilation needs and demand-controlled ventilation systems
• has specialized knowledge of optimization and functionality for ventilation systems with respect to sensor-measured need levels, air conditioning at room level, and in terms of energy optimal operation at the aggregate level
• has in-depth knowledge of government requirements, regulations, standards and industry standards for ventilation
• has in-depth knowledge of the ventilation system as part of a comprehensive air conditioning solution
• has specialized knowledge of processes related to air conditioning in relation to comfort ventilation in swimming facilities and hospitals
• has in-depth knowledge of the role of ventilation in relation to safety ventilation in laboratories and hospitals

SkillsThe student can

• applyi scientific methods to solve problems relating to ventilation and indoor climate in an independent manner
• choose the right methods and system solutions to solve scientific and practical problems, and justify the choice
• design well-functioning demand-controlled ventilation systems in relation to sensor-measured need levels, air conditioning at room level and optimal in terms of energy consumption at generator level
• calculate airflow requirement and specify strategy for demand-control
• calculate air jets and ventilation-based air movements in relation to air velocity, temperature development and pollution transfer
• prepare technical specification requirements for ventilastion and tender material
• lead and assess the quality of work on setting up, setting and handing over demand-controlled facilities
• analyze demand-controlled ventilation systems in operation and come up with the right measures to improve function and reduce energy consumption

General competenceThe student can

• communicate about academic issues, analyzes and conclusions in the field both with specialists and to the general public
• contribute to fresh thinking and innovation processes

Lectures, exercises, laboratory work, analysis of scientific articles and project work.

The following work requirements must be approved in order to be qualified for the exam:

• A laboratory assignment with the project group, subsequent reporting of approx. three to six pages. Laboratory time approx. two hours.
• An individual exercise of two to five pages

Part 1 Individual written exam of three hours, which counts 70 percent. Part 2 Project work in groups of three to five students and which counts 30 percent. Report, implementation, oral and visual presentation in group are considered.

Exam part 1) Exam results can be appealed. Exam part 2) Exam result cannot be appealed.

Both parts of the exam must be graded / E or better in order for students to pass the course.

In the event of a new and postponed individual written examination, oral examination forms may be used. If an oral examination is used for a new and postponed examination, this cannot be appealed.

Many physical phenomena and processes in nature can be described in terms of thermodynamics, heat and mass transfer. The course shall provide a solid foundation to be able to model, analyse, and describe thermal processes in technical installations

No requirements above the admission requirements.

After completing the course, the student is expected to achieve the following learning outcomes defined in terms of knowledge, skills and general competence:

Knowledge

The student has knowledge of

• the significance of phase diagrams, with a particular focus on the phase diagram of water
• ideal gas model conditions and different state equations
• mass and energy balance - 1st law of thermodynamics
• entropy, exergy and anergy - 2nd law of thermodynamics
• the differences between reversible and irreversible processes
• analysis of thermodynamic cycles for heat pumps, including refrigeration cycle and power cycle
• relative and specific humidity, heating and humidification, cooling and dehumidification, Mollier diagram
• heat conduction equation (3-dimensional, transient) with boundary and initial condition
• external and internal forced convection, boundary layer, velocity and temperature profile. Empirical correlations will be used.
• natural (free) convection and empirical correlations to calculate Nusselt's numbers
• heat exchangers, analysis using logarithmic mean temperature difference and effectiveness- NTU method
• simple radiation physics and thermal radiation between solid surfaces
• principles for calculating mass transport by diffusion and convection with emphasis on moisture transfer

Skills

The student is capable of

• analyzing thermodynamic properties using tables and state equation
• analyzing thermodynamic processes using T-v T-s, P-h diagrams, entropy differences for irreversible and reversible processes
• calculating exergy destruction for the various components of a given system in a given environment
• calculating the performance of heat pump, Refrigeration cycle and selected power cycles
• analyzing air-conditioning processes in using Mollier diagram
• calculating heat conduction in solid elements, for example in walls (heat flow and temperature field)
• calculating convective heat transfer between solid bodies and liquid for both forced and natural convection
• calculating heat transfer between hot and cold liquids in heat exchangers
• calculating heat exchange between solid surfaces by means of thermal radiation

General competence

The student is capable of

• analyze the thermodynamic performance of systems related to heat pumps, refrigeration cycles and selected power cycles
• critically select appropriate empirical correlations for the convective heat transfer coefficients for calculating the heat exchanger area
• analyze calculated result
• communicate with engineers and researchers in topics related to thermodynamics, heat and mass transport