Criterion 8: Energy efficiency

• How to demonstrate compliance with clause 11.1.2, criterion 11, and artificial lighting design for tenant occupied area where developer did not install any lighting fixture?
• Should exterior light consumption be considered in EPI calculation?
• Are Benchmark EPI numbers same for naturally ventilated buildings?
• Can we consider energy savings accomplished through solar hot water system in EPI calculation?
• Should AC schedule be modeled for a project where the developer has not given provision for AC electrical point or drain?
• Are LPD (lighting power density) calculations considered for outdoor lighting in Criterion 6?
• Can we consider club house as “residential” in a residential project for meeting the SHGC requirement?
• Is it mandatory to provide BEE star rated fans in a GRIHA registered project?
• We have selected an 800 kVA oil cooled transformer.The ECBC table of transformer losses does not have specific allowable losses for 800 kVA units. What options are available to us to get maximum allowable power transformer losses for this particular case?
• Can dimmers be used as lighting controls?
• Are daylight controls in exterior places accepted as lighting controls according to the ECBC norms and GRIHA requirements?
• How would be the EPI (criterion 14, GRIHA Version 3) calculated for the following project: Project has an 8 hrs. Working schedule and has A.C. as well as Non A.C. spaces.
• What is the exact meaning of daylighted areas?
• Can 1 star AC be considered for energy simulation purpose if there are no AC’s installed in an apartment? Will this suffice the requirement of thermal comfort, (criterion 14, GRIHA Version 3) in residential building?
• A project has residential and commercial functions. Since the benchmark EPIs differ for both types of functions, how will be the EPI benchmark chosen in criterion 14 (GRIHA Version 3)?
• What does the term “water heaters” refer to in clause 14.1.2 in criterion 14 (GRIHA Version 3)?
• What does the term “non-conditioned spaces” refer to in clause 14.1.4 in criterion 14 (GRIHA Version 3)?
• Can an apartment building be considered as unconditioned if the owner is not installing air conditioners in any apartment?
• For compliance with criterion 18 (GRIHA Version 3) in GRIHA V 3.1, is it mandatory to have 1% of the exterior lighting connected to the renewable energy generation system?
• If there is central transformer which is serving office building (going for GRIHA rating) and other facilities (not going for GRIHA rating), is it mandatory for the central transformer to meet the ECBC norms.
• Is it mandatory to provide chilled water pump and AHU fan motors of VSD type)?
• Is the Data center load (Servers + AC) to be counted, while calculating EPI (criterion 14, GRIHA Version 3) for an IT facility?
• Is equipment load considered in EPI calculation?
• In criterion 14 (GRIHA Version 3), how can the savings for regenerative lifts installed in a project be considered. As lift load is also one of the equipment load which is not included in the calculation as per GRIHA.
• A project is not going for 100% solar water heating so can water heating load be included in EPI calculation?
• Is basement area included in EPI calculation (criterion 14, GRIHA Version 3)?
• Kindly provide the EPI value for a mixed use building in moderate climate.
• Is it acceptable in GRIHA to provide guidelines for air-conditioning systems to be equivalent or higher than 3 star rating for an apartment building?
• In Criterion 14, GRIHA Version 03, when the building is simulated with a glazing of SHGC - 0.45 in Resbuild India, the percentage savings decrease from 41% to 38% because the base case SHGC is 0.25.
• In an unconditioned hostel building, only the guest rooms are conditioned. Should these hostel blocks and guest rooms be considered as naturally ventilated or air-conditioned?