Page 77 - GRIHA Manual Volume III - Introduction to National Rating System
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70 GRIHA Manual: Volume 3
14.2 Compliance
The following documents need to be submitted.
14.2.1 A narrative and drawings from the architect/services consultant along with
manufacture cut sheets, describing compliance of the building with the mandatory
provisions (criteria 4.2, 5.2, 6.2, 7.2, and 8.2) of the ECBC-2007 of the BEE, Government
of India.
14.2.2 Annual energy performance of the buildings and the unmet comfort conditions for
non-aircondition areas as per format specified in tables 14.7 and 14.8, supported by
the simulation results from the software used.
Table 14.7 Annual energy performance
Total air conditioned area (m )
2
Total annual predicted energy performance (kWh)
Energy performance index (kWh/m )
2
Percentage reduction in energy performance compared to
the benchmarked energy performance
Total non-air-conditioned area (m )
2
Total annual predicted energy performance (kWh)
Energy performance index (kWh/m )
2
Percentage reduction in energy performance compared to
the benchmarked energy performance
Table 14.8 Unmet comfort conditions for non-air-conditioned area
Total occupied hours in a year
Total number of dissatisied hours in a year
Dissatisied hours as percentage of occupied hours
14.3 Appraisal (Maximum points – 16)
14.3.1 Compliance with ECBC-2007 as per clause 14.1.1. (6 points mandatory)
14.3.2 Compliance with thermal comfort conditions as per NBC-2005 as per clause 14.1.2 and
achievement of benchmark for energy performance index (EPI) as per clause 14.1.5 or
14.1.6 or 14.1.7. (2 points mandatory)
14.3.3 Every 10% reduction in EPI of the building under a specified category shall fetch
additional 2 points to a maximum of 8 points (40% reductions in EPI from the
benchmark) - (2–8 points)
Notes:
l An hourly calculation shall be performed using standard building energy simulation software (such as TRNSYS, Visual DOE,
EQUEST and Energy plus, and so on) to predict the energy performance. An hourly weather file shall be generated using weather
data, acceptable by the Indian Society for Heating Refrigeration and Air-conditioning Engineers (ISHRAE).
l Hourly temperature and relative humidity shall be calculated for non-airconditioned building using simulation software by
feeding hourly weather file to calculate percentage of comfort hours.
l Softcopy of simulation files shall be submitted.
l ADaRSH shall vet all the calculations carried out by the energy consultant.
l Day use buildings perform between 9 am and 5 pm, for five days a week.
l The NBC-2005 will be referred to for the definition of climatic zones.
14.2 Compliance
The following documents need to be submitted.
14.2.1 A narrative and drawings from the architect/services consultant along with
manufacture cut sheets, describing compliance of the building with the mandatory
provisions (criteria 4.2, 5.2, 6.2, 7.2, and 8.2) of the ECBC-2007 of the BEE, Government
of India.
14.2.2 Annual energy performance of the buildings and the unmet comfort conditions for
non-aircondition areas as per format specified in tables 14.7 and 14.8, supported by
the simulation results from the software used.
Table 14.7 Annual energy performance
Total air conditioned area (m )
2
Total annual predicted energy performance (kWh)
Energy performance index (kWh/m )
2
Percentage reduction in energy performance compared to
the benchmarked energy performance
Total non-air-conditioned area (m )
2
Total annual predicted energy performance (kWh)
Energy performance index (kWh/m )
2
Percentage reduction in energy performance compared to
the benchmarked energy performance
Table 14.8 Unmet comfort conditions for non-air-conditioned area
Total occupied hours in a year
Total number of dissatisied hours in a year
Dissatisied hours as percentage of occupied hours
14.3 Appraisal (Maximum points – 16)
14.3.1 Compliance with ECBC-2007 as per clause 14.1.1. (6 points mandatory)
14.3.2 Compliance with thermal comfort conditions as per NBC-2005 as per clause 14.1.2 and
achievement of benchmark for energy performance index (EPI) as per clause 14.1.5 or
14.1.6 or 14.1.7. (2 points mandatory)
14.3.3 Every 10% reduction in EPI of the building under a specified category shall fetch
additional 2 points to a maximum of 8 points (40% reductions in EPI from the
benchmark) - (2–8 points)
Notes:
l An hourly calculation shall be performed using standard building energy simulation software (such as TRNSYS, Visual DOE,
EQUEST and Energy plus, and so on) to predict the energy performance. An hourly weather file shall be generated using weather
data, acceptable by the Indian Society for Heating Refrigeration and Air-conditioning Engineers (ISHRAE).
l Hourly temperature and relative humidity shall be calculated for non-airconditioned building using simulation software by
feeding hourly weather file to calculate percentage of comfort hours.
l Softcopy of simulation files shall be submitted.
l ADaRSH shall vet all the calculations carried out by the energy consultant.
l Day use buildings perform between 9 am and 5 pm, for five days a week.
l The NBC-2005 will be referred to for the definition of climatic zones.
