Course detail
Ventilation and Air Conditioning I
FSI-IVK Acad. year: 2020/2021 Winter semester
The course is concerned with the following topics: The construction and the design of components and systems to ensure thermal comfort and cleanness of surrounding air in residential and industrial buildings, namely ventilating and air-conditioning equipment and the respective components. Air heaters and coolers, heat recovery units, air humidifiers, air cleaning devices, air duct systems and their components, execution, dimensioning, economic calculationa and operation. Refrigeration equipment for air-conditioning, condensers and cooling towers. Ventilating and air-conditioning systems – application and functions.
Language of instruction
Czech
Number of ECTS credits
9
Supervisor
Department
Learning outcomes of the course unit
Students will gain the knowledge of parameters of optimal indoor environment and construction, design and operation of ventilation and air-conditioning systems and their components. They will learn to solve problems related to aerodynamics, economy, and thermal comfort and to dimension ventilation and air-conditioning equipments including their components and accessories.
Prerequisites
Fundamental knowledge of thermodynamics, heat transfer, hydromechanics, ventilation and air-conditioning.
Planned learning activities and teaching methods
The course is taught through lectures explaining the basic principles and theory of the discipline. Exercises are focused on practical topics presented in lectures.
Assesment methods and criteria linked to learning outcomes
One-day exam consists of both written and oral parts. Four questions (three theoretical and a practical one) are given. A personal calculator is required to solve the practical question; moreover,the examinee may bring and use their own literature. The overall exam evaluation equally accounts for both the theoretical and practical part.
Aims
The aim of the course is to provide students with the theoretical basis in the field of ventilation and air-conditioning and to give an overview of ventilation and air-conditioning equipment constructions, and their optimal design. Students will learn to apply the acquired knowledge in a creative way to practical problems.
Specification of controlled education, way of implementation and compensation for absences
Seminar attendance is mandatory. The neccessary conditions to acquire the credits are: full attendance at the seminars, and comply/fulfill with other study duties, such as homework, imposed on a student and checked out by the teacher during the term.
The study programmes with the given course
Programme M2I-P: Mechanical Engineering, Master's
branch M-TEP: Environmental Engineering, compulsory
Type of course unit
Lecture
65 hours, optionally
Teacher / Lecturer
Syllabus
Historical overview, introduction to the branch and motivation
Thermal comfort. Indoor air quality. Climate conditions.
Heat losses and thermal loads of air-conditioned spaces.
Air conditioning in air conditioning systems, psychrometric chart.
Heat and humidity transfer. Calculation of heat exchanger (heater/coolers).
Dimensioning of ventilating equipments. Relations for psychrometric calculations.
Psychrometric calculations of summer and winter operation of air conditioners.
Heaters and air coolers, humidifiers, atmospheric air filters, fans/ventilators
Heat and moisture recovery systems
Stream of air ducts. Air flow in the ventilated spaces. Air jets. Air ducts, their accessories, sizing and regulation. Air terminal devices.
Cooling systems for air conditioning units. Ventilation systems.
Air conditioning, combined, water and refrigeration systems.
Project documentation focused HVAC systems in buildings.
Computer-assisted exercise
26 hours, compulsory
Teacher / Lecturer
Syllabus
Moist air, h-x diagram. Moist air treatments.
Air humidification by liquid water and steam. Adiabatic washer.
Contemporary heat and moisture transfer,calculation of heat and moisture flow.
Air flow in rooms, design of outlets – connected flow.
Dimensioning of outlets, reverse flow in rooms.
Heat gain calculations of air-conditioning space from indoor sources.
Calculation of heat gain from outdoor environment and cooling load.
Dimensioning of air-conditioning equipment under summer conditions.
Dimensioning of air-conditioning equipment under winter conditions.
Dimensioning of air-conditioning equipment working with fresh air only.
Dimensioning of air-conditioning equipment at big production of latent heat.
Dimension calculations of air duct sections.
Pressure loss calculation of air duct.Design of trottlling orifices and devices.