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…and inside the pipe!

   A hallucinogenic, psychedelic,
              like totally
    far-out journey through time,
    ...
And The Wind Cries…
•  Heat Loss!

    Welcome to
    Hydronics Land…
What Does That Mean?
Next Step – Distribution Piping
So, What Size Pipe, Dude?

                  1”
What’s Next?
Why 12 PSI?




       27.72’
Air Eliminators
Basic Air Scoop
How Does It Work?
  Increased cross                   Vanes deflect bubbles
sectional area slows                 into uppe...
High Performance Air Removal
Point Of No Pressure Change
Pumping Toward Tank
    4 psi


        Circulator
            0 psi               8 psi
        differential            d...
Pumping Toward Tank
        0 psi



         Circulator              8 psi
            4 psi                drop    18.5
...
Pumping Away from Tank
       4 psi



                     8 psi
                     drop
     12psi                   1...
Pumping Away from Tank

      8 psi



                   8 psi
                   drop
                           18.5 ’
...
Henry’s Law
Expansion & Diaphragm Tanks

                       Air




                      Water
How a Diaphragm Tank Works
Boyle’s Law
Sizing Expansion Tanks
Centrifugal Pump Basics
Centrifugal Pump
Circulator Anatomy


Impeller,
Engineered Plastic




Casing,
Cast Iron or
Bronze
Water Lubricated Cartridge
How The Water Moves
"Head"




         2.31’
An Important Truth…

     ≠
Sizing A Circulator
Let’s Do One…



      37,000
     20 X 500
     37,000
=
     10,000
    = 3.7
Series Loop Maximums

Tube Size   BTUH/Ft    Max BB   Max BTUH
  ½”         600      25 feet 15,000
  ¾”         600      ...
Estimating Head Loss
Real Head Loss
Calculating Head Loss
Reading A Pump Curve



Head




                       Flow
But At Lower Flows…
Reading A Pump Curve



Head




                    Flow
Steep & Flat Curves
Variable Speed Pumping
The Power of Delta T
A Simple System…


   Total heat loss: 75,000 BTUH
   Each zone: 25,000 BTUH
   Boiler S&R Mains: 1”
   Zone Piping: ¾”
  ...
System Curve

                             System
15
                        Operating Point –
                        All...
When Zone Valves Close…
As Zone Valves Close…
                         System                               System
                    Operating P...
As Zone Valves Close…
                         System
                    Operating Point –
                     2 Zones C...
Universal Hydronic Formula




  GPM


         ÷ 500
   6.5
A Better Solution…


15


10


 5



     5   10   15   20         Taco 00-VDT
A Simple Solution
Peace, Love
& Hydronic Mixing…
Why Mix?
Mixing For The Radiant

                 Cv : flow
                 across a
                  piping
               compo...
How Much Head?

            Cv : flow
            across a
             piping
          component
           needed to
  ...
iValve Reset
How Does It Know?




720 – Design Outdoor Temp
Let’s Do One…


             =
72 - 0
     = 0.8
72
What Does 0.8 Mean?
Cast Iron Boilers
Cv Woes?
First, The Piping

      Injection circulator
How Does It Work?


                      1300 Radiant
                        Supply
                                    ...
Let’s Figure It Out…

                1300 Radiant
                  Supply
                               1800 Boiler
   ...
Some Baseboard Info…
And More…
Something Different…
Low temperature heating range
Naosm 09
Naosm 09
Naosm 09
Naosm 09
Naosm 09
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Naosm 09

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Presentation at NAOSHM Trade Show, Hershey, PA - 2009

Published in: Technology, Business
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Naosm 09

  1. 1. …and inside the pipe! A hallucinogenic, psychedelic, like totally far-out journey through time, space and expansion tanks… May 19, 2009 Presented by Taco, Inc
  2. 2. And The Wind Cries… •  Heat Loss! Welcome to Hydronics Land…
  3. 3. What Does That Mean?
  4. 4. Next Step – Distribution Piping
  5. 5. So, What Size Pipe, Dude? 1”
  6. 6. What’s Next?
  7. 7. Why 12 PSI? 27.72’
  8. 8. Air Eliminators
  9. 9. Basic Air Scoop
  10. 10. How Does It Work? Increased cross Vanes deflect bubbles sectional area slows into upper chamber velocity 18” straight pipe – creates laminar flow – air comes to the top
  11. 11. High Performance Air Removal
  12. 12. Point Of No Pressure Change
  13. 13. Pumping Toward Tank 4 psi Circulator 0 psi 8 psi differential drop 18.5 ’ 12psi 12 psi off 12 psi tank
  14. 14. Pumping Toward Tank 0 psi Circulator 8 psi 4 psi drop 18.5 8 psi differential 12 psi on 12 psi tank
  15. 15. Pumping Away from Tank 4 psi 8 psi drop 12psi 18.5 ’ off
  16. 16. Pumping Away from Tank 8 psi 8 psi drop 18.5 ’ 12psi on
  17. 17. Henry’s Law
  18. 18. Expansion & Diaphragm Tanks Air Water
  19. 19. How a Diaphragm Tank Works
  20. 20. Boyle’s Law
  21. 21. Sizing Expansion Tanks
  22. 22. Centrifugal Pump Basics
  23. 23. Centrifugal Pump
  24. 24. Circulator Anatomy Impeller, Engineered Plastic Casing, Cast Iron or Bronze
  25. 25. Water Lubricated Cartridge
  26. 26. How The Water Moves
  27. 27. "Head" 2.31’
  28. 28. An Important Truth… ≠
  29. 29. Sizing A Circulator
  30. 30. Let’s Do One… 37,000 20 X 500 37,000 = 10,000 = 3.7
  31. 31. Series Loop Maximums Tube Size BTUH/Ft Max BB Max BTUH ½” 600 25 feet 15,000 ¾” 600 67 feet 40,000 1” 770 104 feet 80,000 1¼” 790 177 feet 140,000
  32. 32. Estimating Head Loss
  33. 33. Real Head Loss
  34. 34. Calculating Head Loss
  35. 35. Reading A Pump Curve Head Flow
  36. 36. But At Lower Flows…
  37. 37. Reading A Pump Curve Head Flow
  38. 38. Steep & Flat Curves
  39. 39. Variable Speed Pumping
  40. 40. The Power of Delta T
  41. 41. A Simple System… Total heat loss: 75,000 BTUH Each zone: 25,000 BTUH Boiler S&R Mains: 1” Zone Piping: ¾” Head Loss: 9’
  42. 42. System Curve System 15 Operating Point – All Zones Calling 10 5 5 10 15 20
  43. 43. When Zone Valves Close…
  44. 44. As Zone Valves Close… System System Operating Point – Operating Point – 2 Zones Calling 1 Zone Calling 15 15 10 10 5 5 5 10 15 20 5 10 15 20 6.5 GPM 4 GPM
  45. 45. As Zone Valves Close… System Operating Point – 2 Zones Calling ΔT x 500 15 ΔT x 500 10 5 5 10 15 20 6.5 GPM
  46. 46. Universal Hydronic Formula GPM ÷ 500 6.5
  47. 47. A Better Solution… 15 10 5 5 10 15 20 Taco 00-VDT
  48. 48. A Simple Solution
  49. 49. Peace, Love & Hydronic Mixing…
  50. 50. Why Mix?
  51. 51. Mixing For The Radiant Cv : flow across a piping component needed to create 1 PSI pressure drop
  52. 52. How Much Head? Cv : flow across a piping component needed to create 1 PSI pressure drop
  53. 53. iValve Reset
  54. 54. How Does It Know? 720 – Design Outdoor Temp
  55. 55. Let’s Do One… = 72 - 0 = 0.8 72
  56. 56. What Does 0.8 Mean?
  57. 57. Cast Iron Boilers
  58. 58. Cv Woes?
  59. 59. First, The Piping Injection circulator
  60. 60. How Does It Work? 1300 Radiant Supply 1800 Boiler 1800 Supply 1200 Mixing Point 1200 Radiant Return
  61. 61. Let’s Figure It Out… 1300 Radiant Supply 1800 Boiler Supply BTUH ΔT x 500 30,000 1200 Radiant 60 x 500 Return
  62. 62. Some Baseboard Info…
  63. 63. And More…
  64. 64. Something Different… Low temperature heating range

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