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ENERGY EFFICIENT VENTILATION SYSTEMSVISHAL.S.SINGH

GUIDED BY : PROF. ABHINANDAN R. GUPTA

CIVIL FINAL YEAR

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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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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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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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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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INTRODUCTIONventilation

naturalpassive

passive coolingNatural ventilation

Earth air tunnels

passive heatingDirect solar gain

active

mechanical

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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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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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VENTILATION???

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PURPOSE OF VENTILATION

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TYPES OF VENTILATIONventilation

natural

mechanical

hybrid

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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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SICK BUILDING SYNDROME

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SURVEY1-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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Units consumption for ventilation

Sr no Items consumption

No Total consumption

1 Fan 70W 3 210W2 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 30 115 852 Feb 8 34 130 963 Mar 10 42 135 934 Apr 18 97 215 1185 May 18 97 190 936 June 19 102 231 1297 July 16 67 155 888 Aug 12 50 242 1929 Sep 13 55 178 123

10 Oct 13 55 144 8911 Nov 8 34 135 10112 Dec 8 34 96 62

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EFFICIENT VENTILATION TECHNIQUESTechniques

Active

Uses a powered fan or power source to ventilate

Passive

Not require any additional power source to ventilate

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PASSIVE VENTILATION

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PASSIVE COOLING

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TECHNIQUES IN PASSIVE COOLINGPassive cooling

Natural ventilationSteering breezes

Cross ventilation

Earth air tunnels

Evaporating cooling

shading

Wind tower

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NATURAL VENTILATION

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NATURAL VENTILATION

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EARTH AIR TUNNEL

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PASSIVE HEATING

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TECHNIQUES IN PASSIVE HEATING

Passive heating

Direct solar gain

Massing and orientation for

heatingThermal mass

Aperture for heating

Shading for solar heat gain

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DIRECT SOLAR GAIN

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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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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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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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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