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RESIDENTIAL HEATING & COOLING SEMINAR

RESIDENTIAL HEATING & COOLING SEMINAR. AN INTRODUCTION TO TEMPERATURE CONTROL SYSTEMS. RESIDENTIAL HEATING & COOLING SEMINAR. SPEAKER AGENDA– 09.00 – 09.30 TONY HARBOUR, Technical Specifications Manager, REHAU Ltd.

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RESIDENTIAL HEATING & COOLING SEMINAR

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  1. RESIDENTIAL HEATING & COOLING SEMINAR AN INTRODUCTION TO TEMPERATURE CONTROL SYSTEMS

  2. RESIDENTIAL HEATING & COOLING SEMINAR SPEAKER AGENDA– 09.00 – 09.30 TONY HARBOUR, Technical Specifications Manager, REHAU Ltd. 09.30 – 10.00 RICK HUTCHINSON, Business Development Manager, MITSUBISHI Electric Europe B.V. 10.00 – 10.30 PAUL HEATLEY, Area Sales Manager, KAHRS Flooring 10.30 – 11.00 COFFEE / TEA Break 11.00 – 11.30 GARY AKERS, Technical Manager, St George West London 11.20 – 12.00 WILL GOLD, Design Engineer, REHAU Ltd. 12.00 – 13.30 Q&A session and Networking Lunch AN INTRODUCTION TO TEMPERATURE CONTROL SYSTEMS

  3. REHAU SURFACE HEATING & COOLING TECHNOLOGY AN INTRODUCTION TO TEMPERATURE CONTROL SYSTEMS

  4. LEARNING OBJECTIVES AGENDA • About REHAU • The UK UFH market • Introduction to Underfloor Heating & Cooling • Control Options • Floor types • PE-Xa pipe

  5. REHAU COMPANY HISTORY UK LOCATIONS Private Company • 1948 Founded in the Bavarian town of REHAU • 1962 First UK Sales Office and Warehouse opened in Slough • 1975 First Manufacturing Plant was opened in Amlwch • 1995 Opening of the new headquarters in Ross-on-Wye • 2012 REHAU celebrated its 50th anniversary trading in the UK

  6. REHAU WORLDWIDE THINK GLOBALLY – ACT LOCALLY 6 CONTINENTS 174 LOCATIONS OVER 15,000 EMPLOYEES

  7. REHAU DIVISIONS UNLIMITED POLYMER SOLUTIONS FURNITURE, HOUSEHOLD APPLIANCES, HOSES AND INDUSTRIAL DEVELOPEMENTS Industry EXTERIOR, WATER MANAGEMENT, AIR MANAGEMENT & SEALING Automotive WINDOW AND CURTAIN WALLING TECHNOLOGY, BUILDING TECHNOLOGY, CIVIL ENGINEERING Building Solutions

  8. UNDERFLOOR HEATING AND COOLING THE UK UNDERFLOOR HEATING MARKET • Wet & Electric UFH included • Market grown since 2009 • 5% of the UK heating market • £78m value in 2011 • Est. £90m value by 2016 • Non-domestic projects account for 51% share • Emphasis on small flats & apartments (49% share) • UFH can create up to 15% more space in the property

  9. UNDERFLOOR HEATING AND COOLING ENERGY REQUIREMENTS • Energy requirements of a UK home can typically come from 40-50 W/m² • Average family home (120-160m² ) requires 6-7kW • Optimum flow temperature for heating from heat pumps (≈ 35-40°C) • Optimum flow temperature for cooling is ≈ 16°C, possible to obtain cooling directly from primary ground-source circuit, i.e. simple pump (no heat pump)

  10. UNDERFLOOR HEATING AND COOLING BUILDING REGULATIONS – DOMESTIC HEATING COMPLIANCE GUIDE • Domestic Heating Compliance Guide • - System temperature controls • - High limit thermostat • - Room temperature control • - Temperature control for each room • - Weather compensating controls should be installed • - Time control • - Dwellings with total usable area up to 150m² • - Dwellings with total usable area > 150m² • - Boiler control • - Boiler interlock • - SAP rating

  11. UNDERFLOOR HEATING AND COOLING BASIC PRINCIPLES Modes of heat transferfrom human body

  12. Convection Radiation Thermal comfort Since majority of the heat lost from the human body is due to Radiation, the comfort level derived from Floor Heating is greater than by Convection, due to the heat lost from the human body being replaced in the same way * * Source: BSRIA APPLICATION GUIDE AG 12/2001 UNDERFLOOR HEATING AND COOLING BASIC PRINCIPLES Thermal Comfort / Radiant Heat

  13. UNDERFLOOR HEATING AND COOLING TEMPERATURE PROFILES

  14. UNDERFLOOR HEATING AND COOLING SYSTEMINSTALLATION • Prepare Building • Fit Edge Insulation • Lay Floor Insulation • Tape Joints • Tape Edge Insulation • Site Manifold • Lay Circuit • Reverse Spiral • Fill / flush • Pressurise to 6 Bar

  15. UNDERFLOOR HEATING AND COOLING BENEFITS OF UNDERFLOOR HEATING • Same comfort level at lower room temperatures > 15% to 30% potential saving in fuel costs* • Reduces wasted heat at ceiling height > lower heat load • Large heat emitter reduces heating water temperature > compatible with heat pumps / solar etc. • Vertical temperature profile close to ideal profile > increased comfort level • Even spread of heat across complete floor > high comfort level • Silent and invisible heating system > high comfort level • Air movement at a minimum > allergy friendly • No radiator grills > freedom in space design & safe • Virtually maintenance free system > no downtime • No ventilation shafts, no covers > very low security risk (prisons, public areas) • * Source:SEAV – ‘Operating Costs of Gas Appliances’ & Choosing a heating system’ / BSRIA Application Guide AG 12/2001

  16. UNDERFLOOR HEATING AND COOLING WHY COOLING? • Over heating of residential buildings is even in UK climate conditions quite common for the following reasons: • High internal gains through people • High internal gains through electrical equipment e.g. TV’s, Computers/Laptops etc. • High solar gains • Higher insulation of building • Lower air leakage rates

  17. UNDERFLOOR HEATING AND COOLING PRINCIPLES OF UNDERFLOOR COOLING • Thermal comfort of a person is determined by: • The person’s activity • The person’s clothes • Air temperature • Air speed • Air humidity • Surface Temperature Heat output of the human body occurs via three main mechanisms: RADIATION EVAPORATION CONVECTION

  18. UNDERFLOOR HEATING AND COOLING SYSTEM DESIGN • Important factors which effect the cooling output • Floor covering • Pipe spacing • Pipe dimension • Floor Construction • System • Heat gains

  19. UFH system for joisted floors Chilled ceiling element Screed systems TABS systems UNDERFLOOR HEATING AND COOLING THERMAL MASS OF EMMITERS - Lower thermal mass - Chip board 25 mm - Plaster board 25 mm - Higher thermal mass - Screed 65 mm - Concrete 150 to 200 mm - Typical response times - Screed (75mm) – 1 -1.5 hr/1°C - Concrete (150mm) – 4 – 6 hr /1°C

  20. Overall Thickness Thermal Conductivity Resistance Thickness dWD λ RλB d Max 0.15 Description Cross Section mm 10 10 0.07 M²K/W mm W/mK 0.04 0.01 0.05 Carpet 0.2 0.2 8 2 10 Wood/ Adhesive 5 0.23 0.022 5 Vinyl 0.01 0.001 0.011 10 2 1.0 1.4 12 Ceramic Tiles/ Thin Mortar Bed 0.01 0.007 0.017 10 10 1.0 1.4 20 Ceramic Tiles/ Mortar Bed 0.004 0.007 0.011 3.5 1.4 15 10 25 Flagstones/ Mortar Bed UNDERFLOOR HEATING AND COOLING SYSTEM DESIGN Typical “R” Values of Floor Coverings

  21. UNDERFLOOR HEATING AND COOLING SYSTEM DESIGN • Typical 100-150mm pipe centres • 16mm x 1.5mm RAUTHERM Universal pipe • Flow temp 16ºC – Return temp 19ºC • With a surface temperature of 20ºC and room temperature of 26ºC – 32W/m² cooling can be achieved. • IT IS RECOMMENDED THAT A FLOOR COVERING WITH A LOW THERMAL RESISTANCE IS USED TO MAXIMISE THE COOLING OUTPUT (Tile, Slate etc.)

  22. UNDERFLOOR HEATING AND COOLING COOLING CONTROLS • REHAU INTELLIGENT CONTROL SYSTEM - • HEATING & COOLING MODES: • Each zone controlled by a room sensor – continuously compares required room temp with actual room temp • If room temp is too low or high it signals the actuator to open the return valve and allow warm or cold water to flow into the circuit • SET-BACK MODE: • When leaving the house or at night, systems allows internal temp to drop to a lower level • In cooling mode it allows the internal temperatures to INCREASE • Makes the system respond quickly & efficiently

  23. UNDERFLOOR HEATING AND COOLING REHAU CONTROL OPTIONS

  24. UNDERFLOOR HEATING AND COOLING BMS AND UNDERFLOOR HEATING CONTROLS Underfloor Heating Controls with BMS Compatibility Advantages - Specifically designed for underfloor heating and cooling - Developed and tested software - Remotely monitor and control UFH/C system - Optimise running costs - Install less sensors to do the same job - Low cost option

  25. SUB-SURFACE HEATING / COOLING CONTROLSSTAR CONTROLS – FOR MULTI-OCCUPANCY PROJECTS REHAU STAR Control System Advantages - Cost Effective - Easy to use - Underfloor heating ONLY - Reliable PWM used - Valve protection system reduces maintenance - Night setback can deliver savings of up to 30%

  26. UNDERFLOOR HEATING AND COOLING FLOOR TYPES OVERVIEW DIFFUSION PLATE FLOATING FLOOR RAUFIX TACKER SHEET

  27. Base pipe made of PE-Xa Adhesive O2-Barrier coating made of EVAL Oxygen impermeability according to B.S 7291 UNDERFLOOR HEATING AND COOLING SYSTEM COMPONENTS • Rautherm Universal Pipe • Excellent thermal and chemical resistance • Can withstand 6 bar at 95ºC • Pipe ‘kinks’ do not damage the pipe and still maintains 98% strength

  28. Made from Cross-Linked Polyethylene (PE-Xa) Conforms to: WRAS BBA Approved BS 7291 DIN 4726 UNDERFLOOR HEATING AND COOLING SYSTEM COMPONENTS Rautherm Universal Pipe Polyethylene Polyethylene Cross linked

  29. UNDERFLOOR HEATING AND COOLING SYSTEM COMPONENTS • Nearly 1 billion installations worldwide – no leaks! • 10 year comprehensive loss warranty • Fast and simple installation (60% quicker than copper)

  30. POLYMER CAN BE GREEN ENVIRONMENTAL AND RECYCLABLE ISSUES • Lower cost to the environment for production • - No mining operations for the ore • - PEX pipe is chemically inert therefore highly resistant • to corrosion and lasts longer • - PE is abundant, created by refining operations • - Low energy cost to produce compared with copper • - No chlorine is used in production of PEX • Proven long life and durability • - Provides value: Performance vs environmental cost • - Recyclable PEX can be ground up to inert “filler” e.g. • inert filler in asphalt, irrigation tube etc • Other Consideration • - Quiet operation • Dampens water hammer, reduces pressure spikes that may harm equipment and fixtures • Does not add minerals to drinking water or to the public water system

  31. RENEWABLE ENERGY SOLUTIONSDOMESTIC APPLICATIONS Low energy windows / curtain walling Ground-air heat exchanger District heating pipework Underfloor heating/cooling Ground-source probes/collectors Rainwater harvesting Stormwater management

  32. THANK YOU FOR YOUR ATTENTION ANY QUESTIONS?

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