Renewable energy Utilization

1. RENEWABLE ENERGY UTILIZATION
IN GREEN BUILDING
Name : K.S.S.N. Prakash
Sapid : 500058663

2. A Green building also known as sustainable building is a structure that is
designed, built, renovated, operated or reused in an ecological and resource
efficient manner.
Green Building?

3. Objectives of Green building
 Protecting occupant health
 Improving employee productivity
 Using energy, water and other resources more efficient
 Optimal environmental and economic performance
 Satisfying and quality indoor spaces

4. Renewable Energy Utilization
 Renewable energy utilization (REU) is one of the most impor
tant aspects of green buildings.
 RE is defined as energy that is derived from natural process
es and that can be replenished constantly, including energy
generated from solar, wind, biomass, geothermal, hydropow
er and ocean resources, and biofuel and hydrogen derived
from renewable resources.

5. Solar Energy Utilization in GB
 The use of solar power is of tremendous importance in a green
building.
 Solar energy can be used for Lighting, Cooling, Heating, Drying,
Cooking, Sensors in washrooms.
 Solar power capture technologies can be split into three categori
es:
1) Solar Photovoltaic
2) Solar Water Heaters
3) Solar Cookers

6. Solar Photovoltaic
 Solar PV provide clean en
ergy. During electric gene
ration.
 PV panels there is no har
mful green house gas em
issions. Thus solar PV is e
nvironmentally friendly.
 Operating and maintenan
ce costs for PV panels ar
e considered to be low, a
lmost negligible, compare
d to costs of other renew
able energy systems.

7. Solar Water Heaters
 Solar water heating is a reliable and re
newable energy technology used to h
eat water.
 Sunlight strikes and heats an absorber
surface within a solar collector or an a
ctual potable water to be used flows t
hrough tubes attached to the absorbe
r and picks up the heat from it.
 The heated water is stored in a separa
te preheat tank.
 Solar hot water systems are usually de
signed to meet 40% to 70% of the wa
ter heating load.

8. Typical Hot water consumption for different activities
Bathing (Using bucket water) 15 lit per person per bath (1 day)
Shower bath 25 lit per person per bath
Tub bath 35-50 lit per person per bath
Cooking 5 lit per person per day
Washing clothes 10 lit per person per day
Washing utensils 5 lit per person per meal
Making Tea/Coffee 150ml per person per cup

9. Solar Thermal Facility

10. Wind Turbine
 Performance depends upon t
ype of the turbine and locati
on.
 Cuts electricity bills
 Suzlon one earth campus at
pune generates 155kW powe
r by on site and off site rene
wable energy including wind
turbines and PV panels.
 18 Windmills of 4.75kW each.

11. Griha Criterion-18
 Detailed listing of connected load for lighting and space conditi
oning in the prescribed format.
 Calculation of connected load for lighting and energy requireme
nt for the same.
 List of all loads that are being powered by renewable energy so
urces (other than lighting load) and their energy requirements.

12.  Design calculations for renewable energy system sizing and
performance including annual energy generation.
 Cut sheets of renewable energy systems with necessary det
ails.
 Drawings in CAD format to show location of renewable ener
gy systems.
 Evaluation points : 5 (Partly Mandatory)

13. Example of renewable energy sys
tem capacity calculation
internal lighting and space conditioning loads for a project

14. Annual energy requirement of internal lighting
• 1 extra point in Griha Criterion 18, capacity of the renewable en
ergy system should be such that it meets an annual energy req
uirement of 22600 kwh or more.

15. Renewable energy system design
 Once the targeted number of points is decided the renewable en
ergy system should be designed such that it meets the necessar
y annual energy generation requirements.
 Based on the type of source used, calculate the size of the syst
em to be installed.
 For the project the connected load of HVAC and internal lighting
is 4500kw and the project is aiming at achieving only the manda
tory point in criterion 18 by installing a grid connected PV syste
m.
1% of 4500 kw = 45kw
So, the capacity of PV system should be 45kwp.

16. RE Technologies in Upes
Renewable energy technologies installed on site:
 30.1% of annual energy requirement for artificial lighting met by
solar energy
 Total installed capacity of 100kWp maintaining PF at 0.99
 Total installed capacity of 1kw Wind turbine.
 95.3% annual energy saved by solar hot water system

17.  Energy generated through solar PV - 127814 KWh/year.
 Final EPI achieved - 34 KWh/m2/year.
 16000 LPD Solar Water Heating System for the residential
capacity of 570 at Bidholi Campus
 25000 LPD Solar Water Heating System for the residential
capacity of 1100 at Kandoli Campus

18.  Reduction in EPI from proposed case - 45%.
 Thermal comfort is met as per NBC 2005
 The UPES campus attempted all 34 criteria and has ac
hieved a 4 star rating with 81 points.

19. THANK YOU