Frequently Asked Question
Answer will be updated soon. I would appreciate if you contact us for getting your queries resolved for the time being. The purpose of the following questions is to give readers a feel of our way of looking at building energy efficiency problems.
1.What is the impact of different wall and roof material on annual energy
use?
2.What is the impact of different glazing material on annual energy use?
3.What is the impact of different type of shading on annual energy use?
4.What is the optimum dimension of window shade in vertical as well as
horizontal plane, required to be installed in order to save window from incident
solar heat gain in typical summer days?
5.What is the amount of day light, i.e. day light factor , Lux level with in the
occupancy space due to presence of natural light?
6.What is the level of solar insolation attacking on each façade and roof?
7.what is the best orientation for a building?
8.What is the amount of solar insolation available in the open landscaped area?
9.How will the building's heat load profile vary on the design day?
10.What is the value of typical heat balance component in the building and how
do they vary on design day thermal simulation.
11.What is the wind profile of the location? Can it be harvested in any form
for ventilation of open spaces.
12.What type of climate exists at a particular site and what is the possibility
of incorporating
energy efficiency measures during operation stage?
13.What is the rating of spatial comfort on the landscaped and internal areas?
14.What are the ECBC’s limiting values of thermal properties for the proposed
building envelop?
15.What are different plant room efficiency options?
16.What is the impact of direct and indirect evaporative cooling on annual
energy use?
17.What is the impact on annual Energy use by putting day lighting sensors for
lighting control in the parameter space of the building?
18.What is the impact of VFD in Cooling Towers?
19.What is the impact of using VFD in AHUs?
20.What is the impact of high efficiency chillers?
21.What are the best and the poorest glazing options available? And how far are
they in terms of relative operational efficiencies?
22.What are the best and the poorest options for envelop component available?
And how far are they in terms of relative operational efficiencies?
23. How and to what extent the financial budget be effected if one use an
inexpensive glass in a building?
24.What is the philosophy behind the Energy analysis and is it worth
understanding for taking investment decisions?
25.What percentage of operational efficiencies would we get if we use a better glass
compared to a “notional building” façade?
26.What is the figure of relative saving in $, INR for all the energy
efficiency measures?
27.What is the total electricity bill for the building installed with all the energy
efficiency measures?
28.What are the losses associated with the operations of building in KWh/m2.Yr
considering all the energy efficiency measures?
29.What is the individual breakup of energy component acting on the building
like solar gain, glazing heat transfer and HVAC cooling etc with all the
options?
30.What kind of weather really represent the weather that act on the subject
building( By ASHARE guidelines)?
31.What are the thermo physical specifications of different building materials to
be purchased?
32.What is the life cycle cost (LCC)for the different options compared with
notional building option?
33.What is the pay back with 3% to 4% energy inflation over the period of 25
year?
34.What does ASHARE 90.1, recommends for the building of your type?
35.What does ECBC 2007,( i.e. energy conservation building code India)
recommends for your type of building?
