http://www.ck12.org Chapter 3. Making A Difference
pump water-heater called Eco Cute with a coefficient of performance of 4.9. The Eco Cute came on the market in
Figure 21.14:Advertisement from the Mayor of London’s “DIY planet repairs” campaign of 2007. The text reads
“Turn down. If every London household turned down their thermostat by one degree, we could save 837000 tons
ofCO 2 and £110m per year.” [london.gov.uk/diy] Expressed in savings per person, that’s 0.12 tCO 2 per year per
person. That’s about 1% of one person’s total (11 t), so this is good advice. Well done, Ken!
Further reading on heat pumps: European Heat Pump Network
ehpn.fiz-karlsruhe.de/en/,
http://www.kensaengineering.com,