Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 9 of 9

Thread: Types of solar heating panels

  1. Back To Top    #1

    Join Date
    Aug 2012
    Location
    San Juan Cosala, Jalisco
    Posts
    53

    Types of solar heating panels

    Does anyone have comments of comparison between Israeli made ones (Medallion) and US made ones (Techno Solis). The former are tubes, the latter are flat panels.

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Types of solar heating panels

    Can not find much information. One of the pictures I found make the Medallion panels look EXTREMELY similar to the Heliocol brand panels including the mounting methods. This is what I have. They require fewer roof penetrations because the wind will pass through the panels, but there is a slight loss of heat transfer for the same reason.

    - - - Updated - - -

    Please add your location (City, State or City, Country) to your profile and pool details to your signature as described HERE as it will help us help you.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  3. Back To Top    #3

    Join Date
    Aug 2012
    Location
    San Juan Cosala, Jalisco
    Posts
    53

    Re: Types of solar heating panels

    I added my location but not my pool details. I have my own private pool and our development has a much larger public pool so I may ask about either pool.

  4. Back To Top    #4
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Types of solar heating panels

    Well, all the references I saw for Medallion were on MX websites, seeing your location helps know where the question is coming from So I am willing to bet they are the same as the Heliocol panels which are sold in the states. Try search for that and you will find more information on the forum.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  5. Back To Top    #5

    Join Date
    Mar 2007
    Location
    San Rafael, CA USA
    Posts
    12,082

    Re: Types of solar heating panels

    You can look up ratings at the Florida Solar Energy Center. The Magen Plastic Medallion MD-30, MD-40, and MD-50 are unglazed flat plate panels (basically plastic tubes) with 83.7% efficiency and a 3.250 (and 4.959) efficiency loss from temperature difference (in IP units). The Techno Solis C20ts20-2, C20ts16, C20ts15, C20ts14, C15ts16, C15ts15, C15ts14, C15ts12, C15ts10, C15ts08, C20ts12, C20ts08C20ts10 for most are 82.2% efficiency and a 2.880 (and 1.053) efficiency loss from temperature difference. The most efficient panels of this type are Fafco Revolution have 86.2% efficiency with a 2.608 efficiency loss from temperature difference. The Techno Solis TS-40, TS-32 are glazed flat plate with 70.4% efficiency but only a 0.610 (and 1.570) efficiency loss from temperature difference.

    So if comparing the unglazed flat plate panels, then the Magen Plastic Medallion are a little more efficient but not by much. If you are looking at the glazed TS-40 or TS-32, then that is completely different. While glazed panels are less efficient when there is no wind and no temperature difference between the water and the air, they don't lose efficiency very much from wind nor from a larger temperature difference. Usually glazed panels are used for domestic hot water heating, but they can be used for pools if you tend to keep your pool water warmer than the air temperature or you are in an area with a lot of wind and at least some temperature difference between water and air (with air cooler than the water). See the thread Solar Panel Technology Comparisons for more details about different types of panels.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

  6. Back To Top    #6

    Join Date
    Aug 2012
    Location
    San Juan Cosala, Jalisco
    Posts
    53

    Re: Types of solar heating panels

    Thanks for all the information. It will help me today at our communal pool committee meeting today. They want to purchase Medallion panels but I don't see anything wrong with Techno Solis ones. The latter are about $70 US cheaper-we need about 100 of them.

  7. Back To Top    #7
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Types of solar heating panels

    Wait ... what 100 panels !?!? How big is this pool?
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  8. Back To Top    #8

    Join Date
    Aug 2012
    Location
    San Juan Cosala, Jalisco
    Posts
    53

    Re: Types of solar heating panels

    Quote Originally Posted by jblizzle View Post
    Wait ... what 100 panels !?!? How big is this pool?
    The pool has a volume of 467 cubic meters and a surface area of 360 square meters. A basic rule of thumb is to have an area of solar panels that equal the surface area of the pool. Each Techno Solis panel is 3.72 square meters so you would need 97 panels.
    Another estimating method I've seen is to multiple the surface area of the pool by 1.23. This would mean 115 panels.

  9. Back To Top    #9
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Types of solar heating panels

    Those rules of thumb are higher than we are told here. Usually I heard 50-100% coverage, depending on exposure to the sun. I would think you would have more intense sun and could get by with less than 100%. Not that it would hurt anything beside the wallet of whoever is paying
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •