CPD Programme
Module 15
April 2010
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1. Under the proposed RHI what ‘clean energy cashback’ tariff is being proposed for ground source heat pumps up to 45kW?
A 1.5 p/kWh
B 3.0 p/kWh C 5.5 p/kWh
D 7.0 p/kWh E 9.0 p/kWh
2. At 2m below the ground what is the approximate range of temperatures over a year in the general UK data shown in the article?
A Always 10°C B 9°C to 11°C C 8°C to 12°C D 7°C to 13°C E 0°C to 19°C
3. What is the least depth at which the ground temperature is approximately constant (ie less than +/- 0.5K) throughout the year?
A 1m B 2m C 5m
D 10m E 15m
4. What approximate area of ground would be needed for the example trench ground source heat exchanger if it was in dry soil (as opposed to moist cohesive soil).
A Half as much area B The same area C 1.5 times the area D 2.0 times the area E 4.0 times the area
5. A ground source heat pump system delivers 4000kWh of heat per season. If the Seasonal Performance Factor is 3 and electricity has a carbon emission factor of 0.544 kg CO2/kWh how much CO2 is likely to be attributed to the operation of this heat pump for the season.
A 300kg B 544kg C 725kg D 1200kg E 12000kg
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CIBSE Journal April 2010
www.cibsejournal.com
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