Farm Energy Audits
WSARE Ag RE SeminarSize & Design PV SystemsNovember 30,
20111
Pull in supplement
BozemanDay 29:00 9:45 amKip Pheil, NRCS West National Technology
Support Center
Size and Design for Solar PV Systems
(This version includes the original v1 prepared for the
11/30/2011 session and the Supplement to v1 used in addition to the
original during that session.)1Size and Design PV Systems (Day
2)WSARE Ag RE Seminar; Bozeman (Wed, 11/30/2011) - Final
v2TopicsRevisit Supply and Demand, focus on:Energy ResourceDelivery
System Sizing & Design
PVWatts (Solar Resource)
PV for Water Pumping Systems (System)Oregon NRCS Tech. Note No.
28 Oregon NRCS CalculatorAdapt for other Uses22Size and Design PV
Systems (Day 2)WSARE Ag RE Seminar; Bozeman (Wed, 11/30/2011) -
Final v2Supply & Demand => Capacity3DeliverySystemCapacity
*
PeakNeed *Storage *EnergyResource* - Landowner Time &
MoneyDrivers for Storage Capacity Decision
Need versus Energy Resource
Drivers for Delivery System Capacity Decision
Need - Storage - Energy Resource
Other Landowner resources constrain Need, Capacity, and Storage
choices. The landowner resources are, principally:
Time&Money3Size and Design PV Systems (Day 2)WSARE Ag RE
Seminar; Bozeman (Wed, 11/30/2011) - Final
v24DeliverySystemCapacity
PeakNeedStorage EnergyResourceSupply & Demand =>
CapacityEvaluate Resource(s) available
4Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
(Wed, 11/30/2011) - Final v2Assess the Solar Resource5
Solar Irradiance: amount of solar energy projected on to a
surface (i.e., panel).Recall that Watt measures instant energy
flow.5Size and Design PV Systems (Day 2)WSARE Ag RE Seminar;
Bozeman (Wed, 11/30/2011) - Final v2Assess the Solar Resource6Solar
Insolation: amount of solar over a period of time (e.g., day,
month, year).Measured as kWh/sq. meter/day, typically.
6Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
(Wed, 11/30/2011) - Final v2Assess with
PVWattswww.nrel.gov/rredc/pvwatts/7
AVeryHandyTool 7Size and Design PV Systems (Day 2)WSARE Ag RE
Seminar; Bozeman (Wed, 11/30/2011) - Final v28
8Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
(Wed, 11/30/2011) - Final v2
99Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
(Wed, 11/30/2011) - Final v210
10Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
(Wed, 11/30/2011) - Final v211
We may adjust this (later)Default Tilt = Latitude.
For summer use, default is Latitude 15 degrees (accounts for
higher angle sun angle)11Size and Design PV Systems (Day 2)WSARE Ag
RE Seminar; Bozeman (Wed, 11/30/2011) - Final v2Tilt Matters12
Seasonal Tilt AdjustSummer: -15 degWinter: +15
deg(always?)12Size and Design PV Systems (Day 2)WSARE Ag RE
Seminar; Bozeman (Wed, 11/30/2011) - Final v213
Note, can add text (aka, Pheil Pharms, Bozeman Mt; adjusted Tilt
to optimize summer output, etc.) for print out.
13Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
(Wed, 11/30/2011) - Final v214
Other options.14Size and Design PV Systems (Day 2)WSARE Ag RE
Seminar; Bozeman (Wed, 11/30/2011) - Final v2Solar PV Exercise
115
15Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
(Wed, 11/30/2011) - Final v2Size & Design the System16Design to
Meet the (minimized and efficiently met) Energy Need
Remote Use?
Offset or Net-Metered?16Size and Design PV Systems (Day 2)WSARE
Ag RE Seminar; Bozeman (Wed, 11/30/2011) - Final v2Resource versus
Need17Note lack of unit for Energy Scale !17Size and Design PV
Systems (Day 2)WSARE Ag RE Seminar; Bozeman (Wed, 11/30/2011) -
Final v2Output versus Use18Note lack of unit for Energy Scale !Full
use of one or both the Hydro or Solar resource below total energy
use.
Good situation; no excess to sell back.
Results in full retail value for generated power.18Size and
Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman (Wed,
11/30/2011) - Final v2Design with 19AnotherVeryHandyTool
19Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
(Wed, 11/30/2011) - Final v2Example 1 - GivenCottage Grove Sheep
Operation216 animalsPastured May thru SeptemberDocumented water
rights (stream)Intake 42 ft below base of tankGravity line to Two
(2) 500 gal troughs2020Size and Design PV Systems (Day 2)WSARE Ag
RE Seminar; Bozeman (Wed, 11/30/2011) - Final v221
21Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
(Wed, 11/30/2011) - Final v222
22Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
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23Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
(Wed, 11/30/2011) - Final v224
24Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
(Wed, 11/30/2011) - Final v225
Round to 6.025Size and Design PV Systems (Day 2)WSARE Ag RE
Seminar; Bozeman (Wed, 11/30/2011) - Final v226
26Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
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27Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
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28Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
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29Size and Design PV Systems (Day 2) | Supplement to Final
v1WSARE (E3A) Ag RE Seminar; Bozeman (Wed, 11/30/2011)30
design flow rate = 3.0 gpmTDH = 60 ft_H2O (round up)thus input
power = 160 WattFig. C3, Tech Note No. 28, pg C-28.30Size and
Design PV Systems (Day 2) | Supplement to Final v1WSARE (E3A) Ag RE
Seminar; Bozeman (Wed, 11/30/2011)31
31Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
(Wed, 11/30/2011) - Final v232
32Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
(Wed, 11/30/2011) - Final v233
33Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
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34Size and Design PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman
(Wed, 11/30/2011) - Final v2to be continued 3535Size and Design PV
Systems (Day 2)WSARE Ag RE Seminar; Bozeman (Wed, 11/30/2011) -
Final v2
36Questions now | laterWest NTSC contactsStefanie
AschmannLeaderEnergy Technology Development
[email protected]
Kip PheilEnergy
[email protected] and Design
PV Systems (Day 2)WSARE Ag RE Seminar; Bozeman (Wed, 11/30/2011) -
Final v2
