ventilation techniques

energy efficient ventilation systems

1. ENERGY EFFICIENT VENTILATION SYSTEMS VISHAL.S.SINGH GUIDED BY : PROF. ABHINANDAN R. GUPTA CIVIL FINAL YEAR 1

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 2

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 3

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 ….. 4

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. 5

6. INTRODUCTION 6

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 . 7

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 8

9. VENTILATION??? 9

10. PURPOSE OF VENTILATION 10

11. TYPES OF VENTILATION 11

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 12

13. SICK BUILDING SYNDROME 13

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 14

15. Units consumption for ventilation Sr no Items consumption No Total consumption 1 Fan 70W 3 210W 2 Cooler 40W 1 40W       Total 0.25 KWh Sr. No. M onth 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 M ay 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 15

16. EFFICIENT VENTILATION TECHNIQUES 16

17. PASSIVE VENTILATION 17

18. PASSIVE COOLING 18

19. TECHNIQUES IN PASSIVE COOLING 19

20. NATURAL VENTILATION 20

21. NATURAL VENTILATION 21

22. EARTH AIR TUNNEL 22

23. PASSIVE HEATING 23

24. TECHNIQUES IN PASSIVE HEATING 24

25. DIRECT SOLAR GAIN 25

26. LIMITATIONS Rapid urbanization High initial cost Lack of skilled labor Fear for maintenance (human factor) Negligence towards concept of operational energy 26

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 27

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. 28

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     29