Ventilation and Climatic Systems

• Use standards and professional literature to specify criteria to the indoor environment and quantify cooling, heating and pollution loads
• Select a ventilation principle and design a ventilation system based on requirements to the indoor environment, energy use, and space geometry and usage
• Describe psychrometric states and processes in climatic systems, including heat recovery, heating, cooling, humidification and dehumidification of ventilation air
• Explain the physics of airflow in spaces and ducts
• Describe the aerodynamic characteristics of air terminal devices which are commonly used for room air distribution and their selection procedures
• Carry out simulations of air distribution, indoor environment and energy use by Computational Fluid Dynamics (CFD) and other numerical tools and critically evaluate the output; apply the solutions to predict and describe the indoor environment and energy use and to optimize the ventilation design
• Plan and execute a larger experimental task in a full-scale mock-up including use of instrumentation for the measurement of air change, ventilation effectiveness, air speed and temperature
• Analyze and evaluate indoor environmental quality parameters from experimental data and simulation output
• Describe energy efficient operation and control strategies for ventilation and climatic systems
• Carry out a larger, coherent design project in groups of 3-4 students and present the work in written and oral form

Criteria to comfortable indoor environments. Load calculations. Psychrometrics in climatic systems. Components and types of system. Analysis of energy use. Strategies for operation and control. Numerical simulation of climatic systems, indoor environment and energy use. Ventilation principles and systems. Theory and modeling of isothermal and non-isothermal airflow in spaces. Airflow near humans. CFD-modeling. Comfort ventilation. Natural ventilation. Hybrid ventilation. Infiltration. Measurement instruments. Measurement of airflow in spaces. Tracer gas measurements.

41814/41815, Participants should have fundamental knowledge of fluid mechanics, heating, air-conditioning and ventilation principles.

Lectures, group work, exercises, experimental work

The students will design a climatic system for a building that has well-defined requirements to the indoor environment. By simulation, it will be tested whether the system meets the energy requirements. CFD-simulation and full-scale measurements with advanced methods will be performed to test the validity of the design.

Minimum: 10, Maximum: 40.

Please be aware that this course has a minimum requirement for the number of participants needed, in order for it to be held. If these requirements are not met, then the course will not be held. Furthermore, there is a limited number of seats available. If there are too many applicants, a pool will be created for the remainder of the qualified applicants, and they will be selected at random. You will be informed 8 days before the start of the course, whether you have been allocated a spot.