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8/11/2019 PPT Solar Energy Greenpeace

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Solar Energy

as aSource of Electric Energy

The AdDU Experience

Engr. Michelle M. Soledad

Electrical Engineering Department

Ateneo de Davao University
http://www.addu.edu.ph/index.php


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1.0 Solar Energy Basics

2.0 Solar Energy Utilization

3.0 The AdDU Experience
http://en.wikipedia.org/wiki/File:ADDU_seal.jpghttp://en.wikipedia.org/wiki/File:ADDU_seal.jpghttp://en.wikipedia.org/wiki/File:ADDU_seal.jpghttp://en.wikipedia.org/wiki/File:ADDU_seal.jpghttp://www.addu.edu.ph/index.php


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1.0 Solar Energy Basics

Source: U.S. Department of Energy http://www.energy.gov/articles/top-6-things-you-didnt-know-about-solar-energy

The amount of Solar Energy that the sun

sends our way is around 173,000 terawatts(trillions of watts)more than 10,000 times

the worlds total energy use
http://www.addu.edu.ph/index.phphttp://www.addu.edu.ph/index.php


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1.1 Solar Energy as a Renewable Energy Resource

What is Solar Energy?

Energy that comes from the sun

May be used as a source of heat and

light

May be used to generate electricity

Image Credit : Rutgers University, Bhavik Shah


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1.2 Solar Energy in History1877 : Air blowing over sun-heated iron was

used to heat homes

1910 : Awarding of the first patent for a solar

collector

1930s: First widespread use of solar power for

heating

1954: Bell Laboratories builds the silicon solarcell, the precursor of all solar-powered

devices

1960s: Space industry uses solar energy to

provide power aboard space crafts

Image Credits: Arizona Public Service Company. Source on Bell Laboratories and Solar Energy Utilization by the Space Industry: US Department of Energy


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1.3 Generating Electricity Using Solar Energy

Photovoltaic

direct conversion of sunlight toelectricity

Photovoltaic Solar Power Plants

contain:Solar arrays

Inv erters

Transform ers

Thermal

use of heat to generate electricityThermal Solar Power Plants contain:

Collector f ields

Turbine

Generators

Cool ing Towers

Transform ersSource/Image Credit: Arizona Public Service Company

Glendale Airport, Glendale, Arizona

10 MW Solar II Experimental Power Plant, CA


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1.3.1 Photovoltaic Solar Systems1. Sun illuminates the solar cells in the

photo vo ltaic (PV) array

2. Solar energy is converted to electr ic

energy in the PV array

3. Electric energy generated goes intoan inverter, a device which converts

direct current (DC) to alternating

current (AC)

4. Alternating current goes into power

lines for distribution to end users

Source/Image Credit: Arizona Public Service Company;www.solaredge.com; www.exponent.com


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1.3.2 Thermal Solar Systems

Source/Image Credit: Arizona Public Service Company

1. Parabo l ic mir rors focus the sun at 30 to

60 t imes its normal intensity on a

receiver pip e, located along the focal

l ine of the trough

2. Synthetic o i l captures heat ; hot o il is

pum ped through heat exchanger to

produ ce steam

3. Convent ional s team turb ine/generator

pro du ces electr ic i ty

4. Steam is condensed th rough a coo l ing

tower, and is pum ped back throug h the

heat exchanger con nected to solar

energy col lect ion f ield


9/26Source: University of California San Diego/Santa Cruz

1.4 Advantages

Clean

Sustainableinexhaustible

Noise-free

Low maintenance costs

Competitive use among otherenergy sources at selected uses

(ex. off-grid)


10/26Source/Image Credit: Arizona Public Service Company


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Image Credit: Arizona Public Service Company

Info Source: National Geographic Society http://environment.nationalgeographic.com/environment/global-warming/solar-power-profile/

1.5 Drawbacks

?Does not work at night without a storage

device

?Dependent on weather during the day(cloudy weather will make it unreliable)

?Expensive

?Requires a huge footprint (for large-scaleelectricity generation)


12/26Source: Espina (2008)

1.5.1 Solar PV SystemOff-Grid (Php/kW)

Capital Cost @ 8-hr a Day (Php/kWe) 435,313.85

Operation & Maintenance (Php/kWe) 12,043.09

Solar Electric Footprint (m2/kWe) 25.00

Area required for a 100MW Plant (Has.) 250.00


13/26Source/Image Credit: http://www.solarplaza.com/top10-pv-markets/



14/26Source/Image Credit: http://www.solarplaza.com/top10-pv-markets/



15/26Image Credit: https://www.cia.gov/library/publications/the-world-factbook/geos/rp.html. Source: Green is Gold, Greenpeace (2013)

2.1 Solar Energy Utilization Potential - Philippines

Located near the equator

Long, hot summers

Average solar radiation of 161.7

watts per sq. m.

Potential to generate 4.5 to 5.5 kWh

per sq. m., per day


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3.0 RE and Solar EnergyThe AdDU Experience

engages vigorously in environmental protection,

the preservation of bio-diversity, andthe promotion of renewable energy.

- Excerpt from the AdDU Mission Statement


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3.0 RE and Solar EnergyThe AdDU Experience Participation in the Sustainable Campus initiative of Greenpeace,

along with the University of Southeastern Philippines

Institutional support for conduct of baseline energy audit (2012)

and profiling of factors that affect energy consumption (2013) in

the Jacinto campus

Institutional support for studies on renewable energy

systems (solar PV, solar thermal, micro-hydro)

Investment in solar PV system (also became a medium

for community engagement, through disaster response

activities in the aftermath of Typhoon Pablo)


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Pilot Solar PV SystemRooftop, Finster Hall, AdDU

Sun Tracker Electrical Entrance to Finster Hall

12 Sets of Solar-PV Panels (@ 4 panels per set) 20-kW Grid-Tie Inverter



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3.0 RE and Solar EnergyThe AdDU ExperienceBenefits Value RemarksFinancial 64.512 kWhr per day @ 13.44 kW installed capacity, about 80%

derating factor, 6.0 hours of Insolation

exposure (@ 1kw/m2) per day

(54.512 kWhr/day)(30days/mo)=1.94 MWhr/month

Energy harvested per month

(1.94 MWhr/Month)(P

9.68/kWhr) = P19.40T/Month

Recovery in 6.5-7.5 years for a P1.68M

investment, @ P10/kWhr (Approved Feed-

In-Tariff is P9.68/kWhr)

P 232.80T/yr or P 5.82M in 25

years

P3.00-3.50 per kWh for 25 years

(and can be extended)

@ P1.68M cash outlay including repair &

maintenance (note: energy cost may rise

from P8-12/kWh to P25-30/kWh in 25

years)


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Ongoing / In the pipeline

AdDU Community Tower

Roxas Ave/Zamora St

Proposed InstalledCapacity: 166 kWp


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AdDU Community Tower

Roxas Ave/Zamora St

Proposed InstalledCapacity: 166 kWp

Solar-PV Panel Dimension (385 W, 35 kgs)


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AdDU Martinez Sports Complex, McArthur Highway, Matina

Proposed Installed Capacity: 108 kWp


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AdDU Martinez Sports

Complex

McArthur Highway, Matina

Proposed Installed

Capacity: 108 kWp

Solar-PV Panel Dimension (300 W, 27.1 kgs)


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Exploratory Research on

Electricity Generation

using Solar Thermal

Technology


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www.addu.edu.ph

[email protected]

(082) 221-2411 local 8313

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