Friday 30 November 2012

Author(s): Disha Singh

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  • Tinting of double glazed

    Tinting of double glazed glass can be electronically controlled and a simple down load of app can help reduce the amount of heat kept away from the glass
    The installation of these double glazed glass panels can be simple as it is pushed between two channels and then locks it providing secure grip on glass and can withstand upto 1000 km winds per hour pressure.
    US patent was awarded with this unique ability to withstand high winds and shocks created by earth quake

    Posted by: Anonymous | 2 years ago | Reply
  • Would it not help to build a

    Would it not help to build a shallow swimming pool down in the basement simply to draw out the heat, or to have some sort of simple glass water fish tank/s scattered around to act the same way piped into the pool, or to fill the windows with pumped trickling water either inside or out, or to erect some large slanted mirrors columns, or window blinds, these are just a few off the cuff ideas that may have some value, time for tea, will you join me?

    SHERWOOD ENGLAND

    Posted by: Anonymous | 2 years ago | Reply
  • Dear All Excellent initiative

    Dear All

    Excellent initiative by DTE and green building is important but not green houses creating heat within and outside building.

    Glass manufacturing itself high power consuming and generates huge amount of green house gases apart from transportation costs which again generates green house gases.
    When supreme court could ban all diesel autos and based on the pollution created by automobiles, but somehow no one has taken up with appropiate authorities surveyed the all glass enclosed buildings in New Delhi and surrounding area.
    Similarly a simple survey how the occupants of theall enclosed glass building felt during power outages and how many did not turn up for work during immediate rectification would have given the effects of glass and its repercussions. And it is only tip of the problem.

    Glass is creating havoc in almost all cities and many cities in south are having the feel of the bad effects and maintain temperature of 27 degrees just to save power and also closes the fresh air and exhaust air systems which increases Carbondioxide level in the rooms and cause health hazards to occupants.
    It is essential it is highlighted in vernacular languages as lot of occupants are from level 2 cities where they normally stay in naturally ventilated areas and are subjected to thermal shock.
    Building services are also designed suiting western standards and the occupants of the building are in alien atmosphere, which creates complications in such buildings.

    Regards Sridhar

    Posted by: Anonymous | 2 years ago | Reply
  • Dear All Excellent initiative

    Dear All

    Excellent initiative by DTE and green building is important but not green houses creating heat within and outside building.

    Glass manufacturing itself high power consuming and generates huge amount of green house gases apart from transportation costs which again generates green house gases.
    When supreme court could ban all diesel autos and based on the pollution created by automobiles, but somehow no one has taken up with appropiate authorities surveyed the all glass enclosed buildings in New Delhi and surrounding area.
    Similarly a simple survey how the occupants of theall enclosed glass building felt during power outages and how many did not turn up for work during immediate rectification would have given the effects of glass and its repercussions. And it is only tip of the problem.

    Glass is creating havoc in almost all cities and many cities in south are having the feel of the bad effects and maintain temperature of 27 degrees just to save power and also closes the fresh air and exhaust air systems which increases Carbondioxide level in the rooms and cause health hazards to occupants.
    It is essential it is highlighted in vernacular languages as lot of occupants are from level 2 cities where they normally stay in naturally ventilated areas and are subjected to thermal shock.
    Building services are also designed suiting western standards and the occupants of the building are in alien atmosphere, which creates complications in such buildings.

    Regards Sridhar

    Posted by: Anonymous | 2 years ago | Reply
  • Dear All It is nice

    Dear All
    It is nice initiative by DTE to make people aware of the situation by using glass as facade of the building. Adding more, the glass facade not only increase the internal temperature it also affect the the micro climate of the area and heat island effect in the locality. I as a green building professional always suggest my client`s to reduce the glass use, at least in southern part of the building.

    Posted by: Anonymous | 2 years ago | Reply
  • Hello, I have been selling

    Hello,

    I have been selling glass for commercial buildings talking about light, thermal/solar heat gain etc.etc..but I completely agree with this article, this material is simply being consumed in higher dosage than required especially on the facade. I would not blame glass as a material but the lack of understanding among consumers. This situation would only get better if we have a system pre-allocation of electricity to buildings before they are built and strict compliance thereafter.

    Posted by: Anonymous | 2 years ago | Reply
  • Dear Praveen The mentioned

    Dear Praveen

    The mentioned study was authored by M. C. Singh and S. N. Garg who belong to the Centre of Energy Studies in IIT Delhi. Furthermore, the study is titled 'Suitable Glazing Selection for Glass-Curtain Walls in Tropical Climates of India". Hope this answers your query.

    Posted by: Disha Singh | 3 years ago | Reply
  • I would to like know which

    I would to like know which department of IIT Delhi studied this matter. I am also from jodhpur.

    Posted by: Anonymous | 3 years ago | Reply
  • Dear Adri You comment

    Dear Adri
    You comment provides an accurate assessment of why glazed buildings do not suit our climate.

    Posted by: Disha Singh | 3 years ago | Reply
  • Dear Saurabh Thank you for

    Dear Saurabh
    Thank you for your comment. The endeavour through this article was to stress on the fact that although glazing does have a number of advantages one must look at the negative aspects as well and make an informed decision regarding it's application.

    Posted by: Disha Singh | 3 years ago | Reply
  • Glass is always synonymous

    Glass is always synonymous with green house effect. This is the reason why old buildings with wooden windows keep cooler than today's buildings with glass windows

    Posted by: Anonymous | 3 years ago | Reply
  • Nice insights. The darker

    Nice insights. The darker side of the glaze is a revelation..

    Posted by: Anonymous | 3 years ago | Reply
  • Dear Anjali Thank you for

    Dear Anjali
    Thank you for your comment. I agree that a comparison of completely glazed buildings with those which sensibly use glass would throw light on the suitability of the latter to our weather conditions.

    Regarding the embodied energy values, despite asking various glazing firms for this data no one was able to provide us with the required information. On an average, the embodied energy of a regular glass sheet is said to be 15.9Mj/Kg. But we wanted the data for variants of glass such as toughened glass, tinted glass etc. for which we had to turn to standards of other countries. The values mentioned are from the website of Victoria University of Wellington in New Zealand (Link: http://www.victoria.ac.nz/cbpr/documents/pdfs/ee-coefficients.pdf). One must remember that these values do not include transportation energy, therefore the final values for embodied energy of glass would be far greater especially when they are imported.
    The values for embodied energy of brick have been taken from the following link http://www.docstoc.com/docs/124895631/Energy-in-buildings-BVVReddy

    Posted by: Disha Singh | 3 years ago | Reply
  • Dear Idikula The problem is

    Dear Idikula
    The problem is that the impact of the Indian climate on buildings with glass facades is ignored most of the time. The issue with the CBI building arose due to the fact that the windows had not been opened before and the workforce within did not know how to operate them. Also as not all the glass panels are openable the window openings were not adequate to ventilate the building,
    I agree with your opinion about appropriate building standards which encourage savings on lighting and natural ventilation. But when such glass boxes are designed in India all passive techniques of controlling thermal conditions in the interior of the building do not work. The bottom line is that glass must be used in a judicious and sensible manner in our buildings.

    Posted by: Disha Singh | 3 years ago | Reply
  • Hi - Interesting article.

    Hi - Interesting article. Glass boxes in Delhi have been frowned upon for as long as I can remember but they continue to be the norm for new construction specially for commercial buildings. Maybe, it will be interesting to highlight examples of buildings that are built to a similar scale without using all-glass and still allowing for ample daylighting indoors.

    I would also like to know the source of your information on embodied energy for glass and brick that you mention in the article.

    Thanks

    Posted by: Anonymous | 3 years ago | Reply
  • It is quite surprising why

    It is quite surprising why the windows were jammed.
    How come regular checks and extreme conditions tests were not done in advance. Probable case of Heat thawing.
    In fact building standards should encourage saving on lighting and air management implying more fresh air naturally must be utilized.
    This reiterates the fact and need of low redundancy and improvements on plan C & Plan D as fall backs for A,B

    Posted by: Anonymous | 3 years ago | Reply
  • Dear Jaspreet That is a very

    Dear Jaspreet

    That is a very accurate observation.
    But nowadays the new government buildings have a high percentage of their facade covered with glass. Some CPWD officials in Delhi claim that they are being pressurized into using large quantities of glass on the façade of new government buildings by senior bureaucrats and officers. These senior officers have seen completely glazed buildings on their visits to foreign countries and want identical if not similar buildings to be replicated in India. It is disheartening to realize that even those who need to set a good example for the public are favoring the design and construction of such structures. Everyone seems to be so overwhelmed by these glass boxes that they do not even consider the impact of our climate on such structures.

    Posted by: Disha Singh | 3 years ago | Reply
  • I think that is the reason

    I think that is the reason why the old government buildings constructed earlier in around 1900's maintain good temperature and colder then the new offices which are built using glass.

    Posted by: Anonymous | 3 years ago | Reply
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