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Heat Pumps And Underfloor Heating – A Match Made In Heaven?

Heat Pumps And Underfloor Heating – A Match Made In Heaven?. THE NATIONAL ENERGY FOUNDATION Ground Source Heat Pump Seminar 12 th May 2005. Introduction. Steve Alldritt Business Development Manager: Central Region Uponor Housing Solutions Ltd

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Heat Pumps And Underfloor Heating – A Match Made In Heaven?

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  1. Heat Pumps And Underfloor Heating – A Match Made In Heaven? THE NATIONAL ENERGY FOUNDATION Ground Source Heat Pump Seminar 12th May 2005

  2. Introduction • Steve Alldritt Business Development Manager: Central Region Uponor Housing Solutions Ltd • Nick Wincott Managing Director Eastern Heat Pumps Incorporating Screedmasters

  3. Who Are We???????? Uponor Net Sales Worldwide : 1.3 billion EUR Sales to 100 countries worldwide 27 production sites in 13 countries 4800 employees Main Areas of Business Heating & Cooling systems indoor water systems (heating / potable) Sewer & storm pipework ground loop collector pipework

  4. Introduction • Aims • Explain how underfloor Heating works. • Examine advantages & disadvantages UFH used with GSHP • Outcome • Show how you and your clients can benefit from UFH & GSHP • Effect energy efficiency improvements

  5. HOW DO MODERN HEATING SYSTEMS WORK?

  6. 1,7 m 1,7 m 0,1 m 0,1 m 20 24 °C 16 20 24 °C 16 2,7 m 1,7 m 0,1 m 20 24 °C 16 What are we trying to achieve? Radiator Ideal Underfloor UFH is very close to the ideal temperature distribution

  7. How Does UFH Work? Just like one big low temperature radiator

  8. Room ‘Stat Wirsbo Underfloor Heating General Control Principles WTC ControlBox 40°C 82°C Flow Detector UFH Pump Primary Pump Energy Source Min Flow Bypass 72°C 35°C

  9. GSHP Control Principles

  10. 1960’s Underfloor Heating • Mainly electric cable in thick concrete floors • Floor used as storage heater • Poor controls • Floors too hot (Uncomfortable) • Inefficient (Generally poor insulation) • Ineffective (Huge number of air changes) • Ultimately unreliable (Expensive to run)

  11. Mainly warm water High tech plastic pipe in or just below floor Water is 45-60OC Forms to suit most floor constructions Well proven controls Economical to run (Especially with GSHP) Reliable, long lasting Maintenance-free Modern Underfloor Heating

  12. Underfloor Heating / GHSP Design Principles • Ultimate performance from both systems • Perform Heat Loss Calculations • Match W/m2 from UFH with GSHP • Agree flow / return temps, depending on floor constructions • Agree control strategy (i.e individual room temperature control) • Tel the customer what we can give him!!!!

  13. Manifold cabinet & Thermostatic adjustment

  14. Solid Floor – 100 W/m2 max (40-45° Flow)

  15. Floor Cross Section Carpet Tile Wood Screed Insulation Over site

  16. Pipe set in place before screed is laid

  17. Pipe positioning plate

  18. Clip Rail

  19. Suspended Floor – 70 W/m2 max (50-55°C Flow)

  20. Unifoil System – 70 W/m2 (50-55°C Flow)

  21. Floating Floor – 70 W/m2 max (50-55°C Flow) 14mm pipe Final floor covering Heat emission plate Floating floor panel

  22. Sports Hall

  23. Underfloor Heating / Cooling via GSHP • Comfort cooling can be achieved by reverse cycling GSHP • Cooling outputs of approx. 40 W/m2 • Flow / Return temperatures of 10/15°C • Dew point control to avoid ‘Wet Floors’ • Heating / Cooling changeover controls

  24. Underfloor Heating / Cooling Via GSHP

  25. Five Areas of Energy Saving with UFH

  26. Advantages of UFH / GSHP • Very comfortable • No ‘hot heads or cold feet’ • Does not promote floor draughts • No drying of the air • Reduced dust levels • Beneficial to allergy sufferers, asthma etc • Simplifies controls i.e. minimal mixing required • Unobtrusive • Walls left completely clear • Floors and walls are easier to clean

  27. Other Advantages of UFH • Quiet • No creaks and groans, especially in solid floors • Safe • No hot surfaces - important to HSE • No sharp edges to cause injury • Ultimate low surface temperature radiator • Nothing to vandalise • In Sweden, only UFH is allowed, by law, in children's nurseries • Ultimate in ‘green’ energy

  28. Other Advantages of UFH • Complements other aspects of heating • Keeps options open for water heating • heat pumps • Cost effective installation • Less damage & less pilferage • Installable in most stages of the construction process • Lower running costs • Low water temperature direct from GSHP • Reduced installation problems

  29. BA Headquarters Heathrow

  30. Kingdom Hall

  31. Ancient manuscript archive

  32. Pizza Express Restaurant

  33. Why UFH / GSHP’s Relevant to You • Improving building insulation standards leads to reduced heating requirements • EU regulations on energy efficiency and pollution require low temperature emitters such as UFH • Options are kept open for green energy sources based on low temperatures (heat pumps) The UK is now to rediscovering Underfloor Heating

  34. Summary Underfloor Heating today is:- • clean and ‘green’ • comfortable • invisible • quiet • safe • energy-efficient • maintenance-free

  35. UPONOR HOUSING SOLUTIONS LTD

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