energy efficient ventilation systems

1. ENERGY EFFICIENT VENTILATION SYSTEMS
VISHAL.S.SINGH
GUIDED BY : PROF. ABHINANDAN R. GUPTA
CIVIL FINAL YEAR
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2. CONTENTS
1. Abstract 11. Passive Ventilation
2. Introduction 12. Passive Cooling
3. Literature review 13. Techniques in Passive Cooling
4. Ventilation 14. Passive Heating
5. Purpose of Ventilation 15. Techniques In Passive Heating
6. Types of Ventilation 16. Conclusions
7. IS-3362 1977 Criteria for ventilation 17. Limitations
8. Sick Building Syndrome (SBS) 18. References
9. Survey
10. Efficient Ventilation Techniques
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3. ABSTRACT
This study is about, “Natural Ventilation in Buildings -Architectural concepts, consequences and
possibilities”, and the efficient ventilation techniques for ventilation from the result of the
literature that we preferred. The main objectives of this work have been to identify and investigate
the architectural consequences and possibilities of natural ventilation techniques. The most
important findings of this work are that:
Utilization of natural ventilation in buildings has architectural consequences as well as
possibilities.
The ventilation principle applied (single-sided, cross- or stack ventilation) together with the
nature of the supply and extract paths, i.e. whether they are local or central, are of key importance
for the efficient systems.
Designing a naturally ventilated building is more difficult than designing a similar but
mechanically ventilated building. Because of high initial. But has a long term future
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4. INTRODUCTION
Aim: To study and suggest Energy Efficient Ventilation Systems
Objective:
1. To study the concept and types of ventilation
2. To Study the energy consumption for ventilation
3. To carry out survey work energy consumption for ventilation
4. To study and suggest various efficient ventilation systems
Contd…..
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5. Need:
As the energy consumption for ventilation is high it is very important to find alternative efficient
system.
It has become urge of today to find techniques for natural ventilation over mechanical ventilation
systems which can boost the ventilation systems for life long becoming the “ENERGY
EFFICIENT SYSTEMS”
As ventilation constitutes of 34% of the total power consumption. It is necessary to reduce it.
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6. INTRODUCTION
ventilation
natural
passive
passive
cooling
Natural
ventilation
Earth air
tunnels
passive
heating
Direct solar
active gain
mechanical
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7. LITERATURE REVIEW
Rob Aldrich and Louis arena, 2013: the key factor is the need and level of ventilations
Prof. Satish baliram patil,Dr S.V. Deodhar, jan 2013: ventilation in rural areas
Manoj kumar Dubey, The author discusses about the earth air tunnel
John Semmelhack, (4) – 2012:Understand the impacts typical Passive House ventilation systems
have on annual heating and cooling loads in various climates
M. Jamil Ahmad1, G.N. Tiwari, Anil Kumar Singh, Manisha Sharma, H.N. Singh, (5) 2010. In
this article, the author says about the heating/cooling potential of a dome shaped house
Milica Gomzi Jasmika Bobi, (6) 2009. The author discusses about the term "sick building
syndrome" (SBS).
John Straube, (7), 2007-10-15. It is about the control of air flow is important for several reasons:
to control moisture damage, reduce energy losses, and to ensure occupant comfort and health.
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8. Per Heiselberg, (8), December 2006.The author discusses about the effectiveness of natural
ventilation, i.e. its ability to ensure indoor air quality and passive cooling in a building, depends
greatly on the design process
Joseph Lstiburek, (9), 2004. The author is focused on the roofs which can help on ventilation.
Tommy klevien, (10), March 2003. The author has explained the need, principles and the
techniques used in energy efficient ventilation systems
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9. VENTILATION???
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10. PURPOSE OF VENTILATION
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11. TYPES OF VENTILATION
ventilation
natural
mechanical
hybrid
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12. IS-3362 1977 CRITERIA FOR VENTILATION
1. Inlet openings in the buildings should be well distributed and should be located on the
windward side at a low level, and outlet openings should be located on the leeward side
2. For a total area of openings (inlet and outlet) of 20 to 30 percent of floor area, the average
indoor wind velocity is around 30 percent of out- door velocity
3. Inlet openings should not as far as possible be obstructed by adjoining buildings, trees, sign
boards or other obstructions or by partitions inside in the path of air flow
4.Where the direction of wind is quite constant and, the size of the inlet should be kept within 30
to 50 percent of the total area of openings and the building should be oriented perpendicular to the
incident wind
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13. SICK BUILDING SYNDROME
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14. SURVEY
1-BHK, 4 People At Akola, Maharashtra
Sr. No. Items Consumption No. Total consumption
1 Fan 70W 2 140W
2 Cooler 40W 1 40W
Total 0.18 KWh
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15. Units consumption for ventilation
Sr no Items cons
ump
tion
No Total
consumption
1 Fan 70W 3 210W
2 Cooler 40W 1 40W
Total 0.25 KWh
Sr. No. Month Ventilation consumption
time
Appliance/day/
month
consumption
Units in bill Consumption for others
1 Jan 7 30 115 85
2 Feb 8 34 130 96
3 Mar 10 42 135 93
4 Apr 18 97 215 118
5 May 18 97 190 93
6 June 19 102 231 129
7 July 16 67 155 88
8 Aug 12 50 242 192
9 Sep 13 55 178 123
10 Oct 13 55 144 89
11 Nov 8 34 135 101
12 Dec 8 34 96 62
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16. EFFICIENT VENTILATION TECHNIQUES
Techniques
Active
Uses a powered fan or
power source to
ventilate
Passive
Not require any
additional power source
to ventilate
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17. PASSIVE VENTILATION
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18. PASSIVE COOLING
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19. TECHNIQUES IN PASSIVE COOLING
Passive cooling
Natural ventilation Steering breezes
Cross ventilation
Earth air tunnels
Evaporating
cooling
shading
Wind tower
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20. NATURAL VENTILATION
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21. NATURAL VENTILATION
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22. EARTH AIR TUNNEL
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23. PASSIVE HEATING
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24. TECHNIQUES IN PASSIVE HEATING
Passive heating
Direct solar
gain
Massing and
orientation for
heating
Thermal mass
Aperture for
heating
Shading for
solar heat gain
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25. DIRECT SOLAR GAIN
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26. LIMITATIONS
◦ Rapid urbanization
◦ High initial cost
◦ Lack of skilled labor
◦ Fear for maintenance (human factor)
◦ Negligence towards concept of operational energy
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27. CONCLUSIONS
1.From this we conclude that we can rely on natural ventilation. Reducing the energy
consumption on a great scale.
2.The passive ventilation technique has a great importance in natural ventilation. Increasing the
circulation of air to a large extent. The passive cooling and heating techniques can be used in both
winter and summer making the house eco-friendly and energy efficient.
3.Passive ventilation initially costs more than normal building but has a long term effect
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28. REFERENCES
Robb Aldrich and Lois Arena, (1) Evaluating Ventilation Systems for Existing Homes, Building technologies
program, February 2013
Prof. Satish Baliram Patil, Dr.S.V.Deodhar,(2) Natural Ventilation of Enclosed Buildings in Rural Areas,
International Journal of Science, Engineering and Technology Research (IJSETR) Volume 2, Issue 1, January 2013
Manojkumar Dubey, Dr. J.L.Bhagoria,dr. Atullanjewar, (3) Earth Air Heat Exchanger in Parallel Connection,
International Journal of Engineering Trends and Technology (IJETT) - Volume4 Issue6- June 2013
John Semmelhack, (4)7th Annual North American Passive House Conference – 2012.
M. Jamil Ahmad1, G.N. Tiwari, Anil Kumar Singh, Manisha Sharma, H.N. Singh, (5) Heating/cooling
potential and carbon credit earned for house, INTERNATIONAL JOURNAL OF ENERGY AND
ENVIRONMENT Volume 1, Issue 1, 2010.
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29. CONTD…..
MILICA GOMZI JASMINKA BOBI,(6) VOL. 111, No 1, 79–84,PERIODICUM BIOLOGORUM UDC 57:61 2 CODEN
PDBIAD ISSN 0031-5362, 2009
John Straube, (7) Building Science Digest 014, Air Flow Control in Buildings, 2007-10-15
Per Heiselberg, (8) Design of Natural and Hybrid Ventilation, DCE Lecture Notes No. 005, December 2006
Joseph Lstiburek, (9) Roof Design, Research Report - 0404, 2004
Joseph Lstiburek, (10) Vapor Barriers and Wall Design Research Report - 0410 November-2004
Tommy klevien, (11) Natural Ventilation in Buildings Architectural concepts, consequences and possibilities, March 2003
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