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THEME PAPER


                           Figure 1: Highlights of ECBC 2017                      insulation to mitigate the
                                                                                  heat island effect of cities
                                                                                  built environment. Flood-
                                                                                  proofing can be achieved
                                                                                  through metal edging on
                                                                                  corners and fireproofing of
                                                                                  buildings through building
                                                                                  materials of 2 hours rating.
                                                                              Ø  Stringent controls for Heating
                                                                                  Ventilation      and     Air
                                                                                  Conditioning (HVAC) system.
                                                                              Ø Solar hot water heating, solar
                                                                                  lights for the landscape, and
                                                                                  Solar PV panels for electricity
                                                                                  generation on site may be
                                    Source: ECBC
                                                                                  installed in suitable locations.

         new  sections  to  have  an  The ECBC prescribes following           Ø  Electrical systems utilizing
         International Benchmark, Code  practices -                               renewables.
         specific to Indian Climate and      Ø  The  Building  Envelope        The ECBC can reduce energy
         Construction and emphasis on           (Walls, Roofs, Windows)       consumption by 20%- 25% in
         future net-zero building and a         Lighting     (indoor    and   large commercial buildings. As
         snapshot  of  its  provisions,         outdoor)- The leaks in the    per the ECBC 2017, the potential
         scopes, and requirements is            façade,  especially  at  the   impact of mandatory enforcement
         outlined in Figure 1.                  peripheries of openings, add   of ECBC for the year 2017-18 had
         The Sectoral Energy Consump-           to heating/ cooling loads     a technical potential of yielding
         tion as per the 18th Electric          which can be prevented by     savings of 4.3-billion-kilowa -
         Power  Survey  of  Central             proper  sealing.  Using       hour and 3 million metric tons of
         Electricity    Authority      in       energy-efficient glass is an    CO₂.⁶ (h ps://beeindia.gov.in/).
         Commercial        Sector    and        option,  but  innovative      The impact on energy performance
         Residential Sector shows that          nature-based solutions such   varies from 20% in Moderate
         maximum power consumption              as green balconies that bring   climate conditions to 25% in
         is for obtaining thermal comfort.      nature into our homes are a   India's Warm and Humid zones.
         The consumption pa ern for             highly recommended design  Hence, over the lifetime of a
         typical  electricity  use  in          solution. The cool roofs of  building, it is very useful to take
         buildings in the Commercial            buildings can be effectively  steps to reduce the energy in use
         sector shows that 31% may be           designed with a whitewash  through active and passive solar/
         a ributed  to  AC  while  in           of calcium carbonate, white  climatic design measures, but it
         Residential 34% consumption            or aluminum paints, or white  is more important to use the
         may be contributed to fans and         mosaic of reused broken  building materials with low EEV
         7% to AC. Application of building      ceramic tiles. Moreover, roof  and quantities of the materials
         codes  reduces  electricity            and terrace gardens can be  must be minimized especially
         consumption by 25% to 30%.             cultivated  for  shade  and  masonry.⁷




                                                                          April 2021 Volume 22 No. 1- SHELTER  31
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