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Air-conditioning system
- 2. Maintain suitable humidity in all parts of a building Efficiently cool room air during certain seasons Supply a constant and adequate supply of ventilation
- 3. CONTENTS 1. INTRODUCTION 2. How Air-conditioners Work 3. TYPES of Air-conditioners 4. Advantages 5. Disadvantages
- 4. INTRODUCTION Definition - Air conditioning is the process of altering the properties of air (primarily temperature and humidity) to more favorable conditions. • The control of these conditions may be desirable to maintain the health and comfort of the occupants, or to meet the requirements of industrial processes irrespective of the external climatic conditions.
- 6. •The goal is to keep it more comfortable inside the house than it is outside. •These systems, when properly designed & installed maintain indoor atmospheric conditions for winter comfortable, namely temperature, humidity. Air purity & air movements, when outside temperature is very cold. •Maintains indoor condition comfortable when outside atmospheric conditions are not comfortable, but it is very hot & dry. • Maintains indoor temperature comfortable throughout the year, while outside temperature may be very cold or hot. PRINCIPLES OF AIR CONDITIONING
- 7. TYPE OF AIR-CONDITIONING 1) Window air-conditioning system. 2) Split air-conditioning system. 3) Centralised air-conditioning system. 4) Package air-conditioning system.
- 8. 1) Windows Air-conditioning System •Window air conditioners are one of the most commonly used and cheapest type of air conditioners. •To install one of these units, you need the space to make a slot in the wall, and there should also be some open space behind the wall.
- 9. 2) Split air-conditioning system. •The split air conditioner comprises of two parts: the outdoor unit and the indoor unit. •The outdoor unit, fitted outside the room, houses components like the compressor, condenser and expansion valve. •The indoor unit comprises the evaporator or cooling coil and the cooling fan. For this unit you don’t have to make any slot in the wall of the room.
- 10. 3) Centralised Air-Conditioning System •The central air conditioning plants or the systems are used when large buildings, hotels, theaters, airports, shopping malls etc. are to be air conditioned completely. •The window and split air conditioners are used for single rooms or small office spaces. •If the whole building is to be cooled it is not economically viable to put window or split air conditioner in each and every room. Further, these small units cannot satisfactorily cool the large halls, auditoriums, receptions areas etc.
- 12. 4) Packaged Air-Conditioning System •The packaged air conditioners are used for the cooling capacities in between these Window AC and Centralized AC extremes. •The packaged air conditioners are available in the fixed rated capacities of 3,5, 7, 10 and 15 tons. •These units are used commonly in places like restaurants, telephone exchanges, homes, small halls, etc.
- 14. ADVANTAGES •Simple to design and control •Smaller ductwork •Less mechanical space •Less maintenance •Increase comfort DISADVANTAGES •Not well known in our industry •Higher construction cost •Many engineers aren’t familiar with this technology •Dew point concerns, building must have a good control of humidity to prevent condensation on chilled beam surface
- 15. CONCLUSION • Air condition system makes our life very comfortable we can protect hot or cold weather by air conditioning system. • At the same time, it emits CFC’s which is depleting Ozone layer. We should use it wisely.
- 16. THANK YOU….