Saving Energy at Home

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Saving Energy at Home Saving Energy at Home Nicola Terry Nicola.qeng-ho.org Energy-surprises.blogspot.com Energy and Carbon Emissions: the way we live today Transition Cambridge – Cambridge Carbon Footprint This work is licensed under a Creative Commons Attribution- ShareAlike 4.0 Intternational License. http://creativecommons.org/licenses/by-sa/4.0/ Why do you want to save energy? • Reduce energy bills • Reduce carbon emissions Does it matter? How can we save energy? Services Savings • Space heating • Reduce waste • Water heating • Reduce requirement • Cooking • Increase efficiency • Lighting and appliances Space heating – Reducing heat loss Measure Savings Easiness Loft/cavity insulation +++ ++ Solid wall insulation +++ + Floor insulation ++ ++ Double/secondary glazing ++ +/++ Secondary is easier Curtains/blinds + +++ Fix draughts +++ +++ Heat recovery ventilation ++ + Humidity controlled ventilation ++ ++ Shock ventilation ++ +++ Space heating – Reducing heat loss Measure Savings Easiness Loft/cavity insulation +++ ++ Green Solid wall insulation +++ + Deal Floor insulation ++ ++ Double/secondary glazing ++ +/++ Secondary is easier Curtains/blinds + +++ Fix draughts +++ +++ Heat recovery ventilation ++ + Humidity controlled ventilation ++ ++ Shock ventilation ++ +++ Simple home heat loss model http://nicola.qeng-ho.org Space heating – Where are the draughts? • You tell me Space heating - Where are the draughts? • Doors/windows • Floorboards • Skirting • Pipes and cables that go through walls, floors, roofs • Loft hatch • Cat flaps/letter boxes • Chimneys Space heating – Reducing heat requirement • You tell me Space heating – Reducing heat requirement Measure Savings Easiness Turn down thermostat +++ +/++ Depends on who lives in the home Adjust radiator valves ++ +++ Adjust timers ++ +++ (optimum start) Move the thermostat ++ ++ (wireless) Heat yourself +++ ++ Space heating – Increase heating efficiency • You tell me Saving energy – Heating efficiency Measure Savings Easiness Condensing boiler +++ ++ Radiator reflector panels ++ +++ Bleed radiators ++ +++ Radiator shelving ++ ++ Radiator position ++ +/++ Depends on your room layour Hot water savings • You tell me Hot water savings Measure Savings Easiness Lag pipes ++ +++ Check tank thermostat + +++ Shorter showers ++ ++ Low flow shower head ++ +++ Don’t run the hot tap unless +/++ +++ you want hot water Depends on pipe run Cooking • You tell me Cooking Measure Savings Easiness Lids on saucepans ++ +++ Use microwave (reheat solid food, + +++ cook vegetables in little water) Heat only the water you need ++ +++ (kettle, boiling) When you use the oven fill it up ++ ++ Lights and appliances • You tell me TV size/energy label 600 500 A+++ Size matters 400 A++ 300 A+ more than A 200 B energy label Maximum on-power W on-power Maximum 100 C 0 D 14 18 22 26 30 34 38 42 46 50 54 58 62 66 70 Length of diagonal (inches) A A+ 32” 43 W 33 W 42” 69 W 53 W 52” 102 W 79 W Energy certificates Look for kWh/annum Lights and appliances Measure Savings Easiness Use the sun to dry your washing ++ +++ Turn things off (TV, games + +++ consoles, microwave…) Buy smaller ++ +++ Buy efficient +++ ++ Discard old appliances ++ +++ Analysing your electricity use At nicola.qeng-ho.org Wrap up • Main messages • Lots of ways to save energy – many quick wins • If you fix draughts you must consider ventilation • When you buy or change something, think small, efficient, energy saving features More information • www.transitioncambridge.org/faqs • energy-surprises.blogspot.co.uk .
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