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솔라 경로 추적기 (Solar Path Finder)
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Solar Pathfinder

How the Pathfinder Works

Any scientific analysis is only as accurate as the least accurate input. Gross errors in structure orientation, solar system sizing, collector placement, component specification, and scientific studies can result when designers/engineers fail to accurately assess shading patterns at proposed building/ecological sites.

By combining the site-specific shading data of the Solar Pathfinder™ with the published global weather data, an accurate solar site analysis can be made. This insolation data, on an hourly and monthly basis can then be applied to architectural, engineering, solar, and ecological applications. All of this data is integrated in the Solar Pathfinder Assistant software, sold separately.

The Solar Pathfinder™ is non-electronic. Simple and straight-forward in its engineering, it requires no special skills or technical know-how. One simple tracing does the job and becomes the permanent record for the solar data. When properly cared for, the unit will give the user years of accurate site analysis.

plastic dome The Solar Pathfinder™ uses a highly polished, transparent, convex plastic dome to give a panoramic view of the entire site. All the trees, buildings or other obstacles to the sun are plainly visible as reflections on the surface of the dome. The sunpath diagram can be seen through the transparent dome at the same time.

Because the Solar Pathfinder™ works on a reflective principle rather than actually showing shadows, it can be used anytime of the day, anytime of the year, in either cloudy or clear weather. The actual position of the sun at the time of the solar site analysis is irrelevant. In fact, the unit is easier to use in the absence of direct sunlight. It could even be used on a moonlit night.



The Sunpath Diagram

diagram The diagrams are application specific: "South-facing" (for Northern hemisphere) or "vertical" is for applications of 20-90 degrees tilt — usually solar; "Horizontal" is for applications of 0-20 degrees tilt — usually ecological.

The diagrams are latitude specific (the closer to the equator, the more the sun's monthly paths will be overhead).

The rays depict solar time. The arcs depict average sun path for given month.

The small numbers given in half-hour increments give percentage of radiation for that half-hour.

For the flexibility of calculating radiation of any azimuth and any tilt angle, use our Solar Pathfinder Assistant software in addition to the Solar Pathfinder.

Make Magnetic Declination Adjustment

instrument Pull out magnetic declination tab to adjust for magnetic declination.

Rotate diagram (use blue triangle) to make magnetic declination adjustment.

Line white dot up with proper declination value (negative numbers are left of the "0"; positive numbers are right of the "0").

Push in magnetic declination tab to relock.

Base Section

base Place base section where you want to make your site analysis, making it relatively level (the instrument section will "fine-tune" the leveling). If you are installing PV or thermal collectors, the unit needs to be approximately the same height and placement the panels/collectors will be.

NOTE: The telescoping legs of the tripod can be adjusted for leveling. Alternately, a bean bag can be used to help in leveling and to secure the unit from sliding off a pitched roof.

If using optional tripod, insert a ball-tip from a tripod leg into each of the grommets on the base section.

Instrument Section

instrument Set instrument section on base section.

Adjust bubble level so that bubble is in center of black circle (instrument section can rock/adjust on base section to do this).

Adjust unit so red arm of compass points north (for northern hemisphere).




The Solar Pathfinder™ gives an entire year’s solar potential for a given site in just seconds. This non-electronic instrument is ready-to-use upon receipt of shipment.

 

Customer Feedback

This Feedback Forum is to give you the opportunity to inform others of different ways you use the Solar Pathfinder or to share comments or suggestions concerning the Solar Pathfinder. <script type="text/javascript">hiveware_review(); document.write(" Solar Pathfinder with case\">Post a comment");

  • Use for locating greenhouse or sunroom
    by Ron P

    By using the Pathfinder this afternoon I see I have 2 good sites in my backyard for a greenhouse, and I also see I could add a workable sunroom to my house. I feel that the Pathfinder paid for itself already. If my backyard turned out to have too little winter light, then I would have taken the Pathfinder and my camera with me when I went house hunting!

  • "Must have" piece of gear for solar installers!
    by Joe Schwartz -- CEO & Tech Editor of HomePower Magazine

    The Solar Pathfinder is a must have piece of gear for every installer's tool kit!

  • Graphic display
    by Dean Moffatt -- Architect, Sundesigns Architects

    Unsurpassed for the professional analysis of solar characteristics at any proposed site and for a graphic display to clients.

  • Great tool for certified solar site assessors
    by Clay Sterling -- MREA

    We have found the Solar Pathfinder to be a simple, straight forward tool for training certified solar site assessors. The Solar Pathfinder provides all the answers for the people in the field and the home owner.

  • Clever engineering!
    by Ron Thornton -- Physics Dept., Tufts Univ.

    Clever engineering for functional low cost!

  • Emergency Management Tool
    by Randall D. Dunning

    As an emergency communicator and a volunteer first responder specializing in disaster recovery communications, I would not be without a Solar Pathfinder. This is the only tool that can produce fast and accurate siting information for solar powered emergency equipment. During Katrina and Rita, there were adequate engine powered generators to meet need but fuel was inadequate causing most of these generators to be idled due to lack of fuel. One of the lessons learned from these events is the importance of using solar and wind to augment and stretch scarce emergency fuel reserves. The Solar Pathfinder makes it possible to site solar assets quickly and provides an accurate means of predicting solar power availability. I would not consider an emergency managers inventory complete that does not have access to a Solar Pathfinder. The Solar Pathfinder is part of my deployment kit for the EMCOM/EMPOWER Trailer my wife and I designed and built to support our volunteer activities.

    Randall D. Dunning - KC5QHH
    Member Scientific Staff, Nortel
    Mayor Pro Tem, City of Garland, Texas
    Member: NCTCoG EPPC, Garland RACES/ARES

    DISCLAIMER: This endorsement is my personal endorsement of the Solar Pathfinder and does not constitute an endorsement of the product by Nortel, the City of Garland, the Garland City Council, North Central Texas Council of Governments, the Garland Radio Amateur Civil Emergency Service, or the ARRL Amateur Radio Emergency Service.

  • Calculating tree height for wind apps.
    by Craig Tarr

    i pulled out my SP at a recent MREA wind site assessor workshop and created a buzz when i used it for calculating tree height for wind applications.

  • Cool device
    by J. Thomas

    Cool Device.

    After overlaying the angle estimator onto the sun map and comparing data to the PVWATTS tool, it looks to me that ideal array tilt is about 5-10 degrees less than the angle at solar noon for each month. I guess that makes sense as I've read ideal azimuth is within 10 degrees of solar noon. So aligning panels within 10 degrees below solar noon at 180 deg azimulth means the panels may be in a better position as the sun's angle decends from solar noon.

    Does that sound right?

  • Tool choice for value!
    by Chris

    As a startup business trying to fund my own expenses this is truly the choice for value. Thank you for providing the tried and true, dependable, and accurate solar shade analysis tool!

  • Bee hive placement!!
    by Living off the grid

    Once again, I used my trusty Pathfinder. This time, I needed to find a place for my bee hives. Being in a warmer climate, I wanted them to have noon and early afternoon shade. I wanted them to spend their time making honey, not trying to keep their hive cool! Thanks for such a great instrument!

  • Ways I use the Pathfinder
    by Dan Brown, Brown Consulting

    I was the vender (Brown Consulting) that made friends with you at the kempton festival. I just found another use for the pathfinder. I was hired to locate a positon for a light tube on top of a house. The owners wanted to know where to put the light tube and how high to put it. I gave them the spot and we ended up installing it 4 ft. above the house for best results. Just thought you might want to know. I remember you asking me what I used it for. I have now used it for windows, Direct TV, overhangs, PV, house placement, garden placement and now light tubes.

  • American Built!!
    by Lavelle Davis

    Thanks for a great product American built, designed.

    • Re: American Built!!
      by Solar Pathfinder

      Yes, we are proud to be 100% American made of American components !!!

  • Great service; great software
    by Curt Maxey

    All,

    Thanks for your help in achieving an "on time" delivery. I think I opened the link at 1:00 p.m yesterday and I was sitting in the communication director's office with printed reports in hand by 3:00 p.m. He took my proposal to the ORNL Laboratory Director before COB yesterday and I should have a response today.

    I appreciate your assistance.

    Best regards,
    Curt

  • Garden placement, etc.
    by Sean Gere, Gere Tree Service

    I just got my Solar Pathfinder, awesome!

    Super fast service. Thanks!

    I have talked to you in the past but I'm planning on using the Pathfinder for garden placement and other shade related issues. Let me know if there are other products that you offer that would help me out.

    Thanks again,
    Sean Gere
    Owner- Gere Tree Care

  • Outstanding Customer Service!
    by Solar Boy Dave

    This company has some outstanding customer service. I would recommend solar path finder software to everyone in the in the solar site assessment business. This product makes the site assessor job so much easier, and very professional looking. Thank-you for making site assessing easier, solar pathfinder is so very important to a successful site assessment.
    Thanx Solar boy Dave

  • Outstanding Customer Service!
    by Solar Boy Dave

    This company has some outstanding customer service. I would recommend solar path finder software to everyone in the in the solar site assessment business. This product makes the site assessor job so much easier, and very professional looking. Thank-you for making site assessing easier, solar pathfinder is so very important to a successful site assessment.
    Thanx Solar boy Dave

  • Outstanding Customer Service!
    by Solar Boy Dave

    This company has some outstanding customer service. I would recommend solar path finder software to everyone in the in the solar site assessment business. This product makes the site assessor job so much easier, and very professional looking. Thank-you for making site assessing easier, solar pathfinder is so very important to a successful site assessment.
    Thanx Solar boy Dave

 

Formulas for use with the Solar Pathfinder

For the Solar Industry

To Estimate Shading of a Rooftop/Pole Mount on the Future Site

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For the Solar Industry

To Estimate Needed Pole Height to Avoid Shading

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For Landscaping / Golf Course Management

To Estimate How Much to Crop Tree to Avoid Shading

[formula image] [formula image]

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