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Guide to Retrofitting to reduce CO2 & Energy Consumption Rob Veck MSc Project Management (Dist), PMP
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Introduction & MotivationInteresting StatisticsSuper InsulationDraft ProofingHeat Recovery SystemWood Burning StoveSolar PhotovoltaicsSolar Hot WaterWhat’s the Green Deal ?Rob’s No-BrainersWorth Considering
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U-values Amount of heat that flows across 1m 2 where there is a difference of 1 deg C between one side and the other. “Super Insulation” – PassivHaus Roof 0.08 vs 0.16 Floor 0.10 vs 0.25 Walls 0.14 vs 0.35 Doors Quick Survey
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How it works ◦ You pay capital for installation Depends on space and orientation ◦ Electricity Suppliers pay 41.3p for EVERY unit you generate EVEN if you use it. 3.4p for units you do not use. You get ◦ Savings on your electricity bill – about 50% If you change your habits ◦ You get a ¼ ly payment based on what you generate. Return on investment ◦ 10% (20% tax payer) / 12% (40% tax payer) ◦ Represents 8% interest ◦ Inflation proofed ◦ Guaranteed for 25 Years ◦ Payback period – 8 to 10 years
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I’ll be moving house in the next few years ◦ Not worth investing – I won’t see the payback. I don’t have the cash I am maxed out on mortgage / loans / credit cards These Reasons are Countered by the Green Deal
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Green Deal Assessor ◦ Produces a “Whole House Plan” ◦ Estimates the savings ◦ Checks for a Pay Back of 25 Years (Golden Rule) Green Deal Installer(s) ◦ Make changes to the house based on the Plan Green Deal Provider (Green Investment Bank?) ◦ Provide the finance ◦ Collect the payments via your energy bills ◦ These pay off the loan ◦ THE LOAN IS ATTACHED TO THE PROPERTY NOT YOU. ◦ Likely to be limited to £6500. Full Scale Refurbishment would save £8.7 billion/year on household energy bills
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Insulate ◦ Cavity Wall ◦ Roof – at least 270mm Rockwall / Glass Fibre ◦ Thermally Lined curtains ◦ Behind Radiators ◦ Under Floor – if you can Eliminate Drafts ◦ Doors / Letter Boxes / Keyholes ◦ Chimneys ◦ Floors ◦ Windows !! Radiator Valves Set your Boiler Timer Condensing Boiler ◦ New Water tank ? Get dual coil Lighting – LED if you can ◦ Halogen – boo! Please Please Please Check your appliances ! ◦ Upright Fridge / Freezer ◦ Tumbler Dryers – Boo!! ◦ Freezers ◦ Check your PVR / Satellite boxes / TV on standby ◦ Get an OWL Meter
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Redecorating your sitting room ? ◦ Make it an ECO Room Consider internal insulation Under floor Insulation Install a wood burning stove – if you can. Draft proof the floor and doors Put in a mini heat recovery system for fresh air. Put insulation into the ceiling ! ◦ Make it a ZERO ENERGY ROOM ! Solar PV – if you have the money or ◦ Which Report suggests increasing your mortgage. Make sure you have a long term plan ◦ Check that nothing else will be required when altering the room.
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Thermal Bridging ◦ The design attempts to minimise thermal bridging. Heat recovery system ◦ Once insulated and draft proofed, stale air needs to be handled. Check on the type of foundations required. ◦ Went with piles & ring beam because of heavy clay. Plan as much as you can in advance ◦ Reduces uncertainty. Put furniture into storage !
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www.greenhomediary.com www.greenhomediary.com Project Manager ◦ Rob@greenhomediary.com Rob@greenhomediary.com Consultant ◦ ken@kenneal.co.uk ken@kenneal.co.uk Allen Electrical ◦ www.allenelectricalltd.co.uk www.allenelectricalltd.co.uk Renewable Energy, Plumbing & Heating Solutions ◦ www.ambull.co.uk www.ambull.co.uk
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