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Multi-use Facility

Multi-use Facility. Multi-use Facility. Occupancy – 140 persons Building Characteristics Single story 20,000 square feet (250’ x 80’) Standard construction. What we will cover:. Types of hydronic heating systems Closed loop perimeter heating Closed loop radiant systems

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Multi-use Facility

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  1. Multi-use Facility

  2. Multi-use Facility Occupancy – 140 persons Building Characteristics • Single story • 20,000 square feet (250’ x 80’) • Standard construction

  3. What we will cover: • Types of hydronic heating systems • Closed loop perimeter heating • Closed loop radiant systems • Water source heat pumps • Ground source heat pumps • Piping methods • Constant speed/constant volume • Constant speed/variable volume • Variable speed/variable volume • Retrofit market • Significant opportunities! • Magna3 advantages

  4. HW Closed Loop Perimeter/ Fan Coil System Balance Valve (typ.) 2-way or Two Position Valve (typ.) Load (typ.) Expansion Tank Air Separator Modulating Control Valve (typ.) Secondary Pump Primary Pumps Optional Variable Speed Components ∆P Sensor Boiler Boiler Common Pipe

  5. Manual balance valve 3-way control valve 2-way control valve Air separator System piping components

  6. System piping components VAV box Fan coil

  7. HW Closed Loop Radiant Floor/Snow Melt System Boiler #2 Boiler #1 Mixing Valve Secondary Pump Expansion Tank Air Separator Common Pipe Primary Pumps P1 & P2* P1 Radiant Floor or Snow Melt Panels P2 Redundant*

  8. HW Closed Loop Radiant Floor/Snow Melt System

  9. HW Closed Loop Radiant Floor/Snow Melt System

  10. Heat Pumps 60ºF HPWS 60ºF HPWS 45ºF CHWS Heating 180ºF HHWS Air Heat Pump Fan Coil Unit 160ºF HHWR 53ºF HPWR 53ºF CHWR 60ºF HPWS Cooling Air Heat Pump 67ºF HPWR 60ºF HPWR

  11. Heat Pump Operation 60ºF HPWS Refrigerant Piping Refrigerant Coil Compressor Air Fan Heating Reversing Valve Water to Refrigerant Heat Exchanger Expansion Valve 53ºF HPWR

  12. Heat Pumps • Types • Water source • Boiler and chiller • Ground source • Bore field / pond loop / well • Hybrid • A ground source plus supplemental heating or cooling

  13. Boiler WSHP WSHP WSHP WSHP WSHP Water Source Heat Pump (WSHP) Compression Tank Closed Circuit Cooling Tower Make-up Water Expansion Tank Air Separator Primary Pumps P1 & P2* Buffer Tank ( Optional )) Redundant*

  14. WSHP Components Boilers Cooling Towers

  15. GSHP GSHP GSHP GSHP GSHP Ground Source Heat Pump (GSHP) Compression Tank Make-up Water Bore Field Expansion Tank Air Separator HP Loop Pumps P1 & P2* Bore Field Loop Pump Buffer Tank ( Optional ) Redundant*

  16. GSHP

  17. GSHP GSHP GSHP GSHP GSHP Hybrid Ground Source Heat Pump Compression Tank Make-up Water Bore Field Expansion Tank Air Separator HP Loop Pumps P1 & P2* Bore Field Loop Pump Buffer Tank ( Optional ) Redundant* 17

  18. Hydronic Piping Systems Types: • Constant Speed/Constant Volume (CS/CV) • Piping & equipment requirements • Deficiencies • Energy usage • Constant Speed/Variable Volume (CS/VV) • Piping & equipment requirements • Advantages • Energy usage • Variable Speed/Variable Volume (VS/VV) • Piping & equipment requirements • Advantages • Energy usage

  19. CS/CV Piping System Expansion Tank Air Separator Primary Pumps P1 & P2* Load Boiler 1 Boiler 2* 3-way Valve Balance Valve (Typ.) * Redundant

  20. CS/CV System Deficiencies High return water temperatures Robs hot water from other coils at part loaded conditions Increases flow Adds additional boilers on line Boiler performance is reduced

  21. CS/CV System • Load for Multi-use Facility: Chicago, IL • Plot load profile • Select pump for 108 gpm @ 36 ft

  22. CS/CV Pump 40 35 30 25 20 15 10 5 0 108 gpm @ 36 ft 97% Head (ft) 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 Flow (gpm)

  23. Pump Energy Consumption - CS/CV CS/CV

  24. CS/VV HW Piping Systems Boiler 2* Boiler 1 Secondary Pumps P1 & P2* Supply Primary Pumps P1 & P2* Expansion Tank Air Separator Return *Redundant

  25. CS/VV Pumping Systems Add secondary pumps Add common pipe Add system bypass Add 2-way valves Eliminate 3-way valves…or

  26. CS/VV Pumping Systems Eliminate 3-way valves Disable 3-way valves Shut bypass valve Disconnect bypass pipe Actuator may be undersized for 2-way operation Does this make $ense? 26

  27. CS/VV Pump Curve 40 35 30 25 20 15 10 5 0 108 gpm @ 36 ft 97% Head (ft) 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 Flow (gpm)

  28. CS/VV Advantages Lower return water temperatures Minimizes flow to coils Decreases secondary flow Reduces boilers on line Boiler performance is increased Ease of system operation Energy savings Preferred piping method

  29. Pump Energy Consumption - CS/VV CS/CV CS/VV

  30. VS/VV Pumping Add: Variable frequency drive (VFD) Programmable logic controller (PLC) Differential pressure sensors (∆P) Direct digital controls (DDC) Save 75% AOC versus CS/CV!

  31. VS/VV Hot Water Systems ΔP Sensor Boiler 2* Boiler 1 Secondary Pumps VSP1 & VSP2* Supply VS Pumps And Controls Air Separator Expansion Tank Return *Redundant

  32. Pump Curve Summary 108 gpm @ 36 ft 108 gpm @ 36 ft 108 gpm @ 36 ft 54 gpm @ 37 ft 54 gpm @ 9 ft VS/VV CS/VV CS/CV

  33. VS/VV Pump Curve 40 35 30 25 20 15 10 5 0 108 gpm @ 36 ft Magna3 100-120 Head (ft) 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 33 Flow (gpm)

  34. VS/VV Advantages Optimizes return water temperatures Optimizes flow to coils Decreases secondary flow Reduces boilers on line Boiler performance is increased Ease of system operation Optimum energy savings

  35. Pump Energy Consumption - VS/VV CS/CV CS/VV VS/VV

  36. VS/VV Advantages Cost effective design Primary-secondary pumping Common pipe design 2-way valve operation Save 75% of pumping energy over CS/CV systems Save 50% of pumping energy over CS/VV systems

  37. Additional System Savings Additional sources of energy savings Boiler operation ΔT optimization Sources of first cost savings Pump sizing Boiler sizing Valve sizing Pipe sizing

  38. VS/VV Pumping Add: Variable frequency drive (VFD) Programmable logic controller (PLC) Differential pressure sensors (∆P) Direct digital controls (DDC) Or add…

  39. Demand More Magna3!

  40. HW Systems w/ Magna3 Boiler 2* Boiler 1 Secondary Pumps VSP1 & VSP2 Supply Primary Pumps MP1 & MP2* Magna3 VS Pumps With Controls Expansion Tank Air Separator Return *Redundant

  41. VS/VV Retrofit Opportunities Converting CS/CV to VS/VV Steam systems 3 pipe hot/chilled water systems One pipe hot water systems 3-way valve hot water systems Uncontrolled radiant systems Over-sized boiler pumps

  42. VS/VV Retrofit Opportunities Converting CS/VV to VS/VV CS 2-way valve HW systems CS three pipe systems Systems with poor ΔT control Systems with over-sized pumps Systems with local ΔP sensors Systems with single VS pumps

  43. Demand More Magna3:Features & Benefits

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