HEATING, VENTILATION AND AIR-CONDITIONING

HEATING, VENTILATION AND

AIR-CONDITIONING

Prof. dr Maja Todorović

University of Belgrade, Faculty of Mechanical Engineering

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Subject description THE AIM Acquiring knowledge and skills in the field of heating and

air-conditionig systems - the concept of indoor environmental parameters and thermal comfor, climate characteristics, heat trnasfer through building enevelope, types of cental heating systems, heating bodies and system equipment; methods of calculation energy needs and significant parameters; comfort conditions and design parameters, central air conditioning systems, energy sources, final and primary energy, domestic hot water systems; optimization of HVAC systems and the application of passive techniques.


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Subject description

OUTCOME Students are acquiring knowledge and skills in the field of

heating, ventilation, air-conditionig systems and domestic hot water systems; Students are aquanted with methods of calculation of systems’ capacity and methods of calculations of annual energy demands which they can performe in practise. Students can link the basic knowledge and apply it on buildings energy calculations.


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Subject description

THEORETICAL LECTURES Тhe concept of indoor environmental parameters; thermal comfort;

climate characteristics and inpact to indoor environment; metheorological parameters. Heat transfer through building envelope, transsmmision and ventilation heat losses. Central heating systems in buildings, types of heting fluids and heating bodies, central and local control of heating output, heat sources, final and primary energy, devices and equipment in central heating systems, methods of calculation of annual heating demand. Air-conditioning and ventilation systems, heat gains and cooling loads, Solar radiation impact, local and central air-conditioning systems, elements of air handling units. Systems for domestic hot water preparation, consumption dynamics, installed capacity, annual energy consumption of DHW systems. Cooling devices and cooling capacity, energy efficiency ratio, system losses, annual energy demand for cooling and ventilation. Systems optimization and passive techniques.


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Subject description

EXERCISES Auditory exercises consist of following parts: Example of

calculation of thermal properties of elements of the building envelope - the determination of the coefficient of thermal conductivity, specific transmission and ventilation losses, calculation of installed capacity for heating and cooling, design conditions and schadules of use of technical systems, determination of annual energy needs.


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The matrix – theoretical lectures


Theoretical classes

АТ-1 Introduction and thermal comfort 3 classes

indoor environmental parameters;thermal comfort; climate characteristics and inpact to indoor environment;metheorological parameters; Air temperature, humidity, wind and Solar radiation;summer and winter design conditions.

АТ-2 Heat transfer through building envelope 3 classes

heat transmision through building elements;heat bridges;moisture transfer and condensation;air infiltration and natural ventilation.

АТ-3 Central heating systems in buildings 3 classes

types of central heating systems, heating fluids;types of heating bodies, mechanizms of heat transfer;piping systems, pumps and valves;central and local control of heatig output;heating fluid temperature influence to heating output and thermal comfort.

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Theoretical classes

АТ-4 Central heating systems’ equipment 3 classes

heat sources in central heating systems;biolers in heating systems;bioler room and its elements;expansion vessels;measurements and commissioning.

АТ-5 Annual heating demands and heat consumption 3 classes

dominant parameters influences heating energy consumption;measurements to improve existing heating systems;final and primary energy;methods for calculating annual heat consumption;measurements of heat consumption in buildings.

АТ-6 Cooling load and air-conditioning system dynamics 3 classes

heat gains and cooling load;transparent fasade elements;Sun radiation protection;shading coefficients and its influence to cooling load;internal heat gains.

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Theoretical classes

АТ-7 Air-conditioning and ventilation systems 3 classes

comfort and industrial air-conditioning and ventilation; local devices for air treatment;central air-conditioning systems;air handling unit elements;central systems with fan-coils.

АТ-8 Systems for domestic hot water (DHW) preparation 3 classes

central systems for DHW preparation;design conditions and consumption dynamics;losses in DHW systems;solar systems for DHW preparation.

АТ-9 Cooling devices and annual cooling demands 3 classes

cooling energy and cooling devices;energy efficiency ratio;losses in cooling systems;annual cooling demand;annual energy demand for mechanical ventilation.

АТ-10 Systems optimization and passive techniques 3 classes

waste haet recovery; heat exchangers;adiabatic and indirect adiabatic cooling; night ventilation technique; passive cooling, automatic control of the system.

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The matrix – subject structure


HEATING, VENTILATION AND AIR-CONDITIONING

Week

Lectures

Classes weekly

Lecture activities Other activities

Tests

Theoretical Excersise

1 AT-1 3 EX-1 2 5

2 АТ-2 3 EX-2 2 5

3 АТ-3 3 EX-3 2 5

4 АТ-4 3 EX-4 2 5

5 0 CO-1 3 T-1 2 5

6 АТ-5 3 EX-5 2 5

7 АТ-6 3 EX-6 2 5

8 АТ-7 3 EX-7 2 5

9 0 CO-2 3 T-2 2 5

10 АТ-8 3 EX-8 2 5

11 АТ-9 3 EX-9 1 T-3 1 5

12 АТ-10 3 EX-10 2 5

13 CO-3 5 5

14 CO-4 5 5

15 FE 5 5

Сума 30 30 15 75

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Thank you for your attention

Maja Todorović,

University of Belgrade,

Faculty of Mechanical Engineering,

Kraljice Marije 16, 11120 Belgrade 35, Serbia

[email protected]


HEATING, VENTILATION AND AIR-CONDITIONING

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