Air-Source vs. Water/Ground-Source Heat Pump Systems ...
Air-Source vs. Water/Ground-Source Heat Pump Systems ...
Air-Source vs. Water/Ground-Source Heat Pump Systems ...
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CoolEnergy.dk – March 6-7 th, 2013 – Odense, Denmark<br />
SPF and Energy Coverage – ∆E<br />
Rel. Energy Relativ energisparing, Saving, ∆E (%) (%)<br />
80<br />
70<br />
60<br />
50<br />
40<br />
30<br />
20<br />
10<br />
0<br />
5,0<br />
4,0<br />
SPF=2,0<br />
3,5<br />
SPF=2,5<br />
3,0<br />
2,5<br />
SPF=3,0<br />
SPF=3,5<br />
2,0<br />
SPF=4,0<br />
SPF=5,0<br />
0 10 20 30 40 50 60 70 80 90 100<br />
<strong>Heat</strong> <strong>Pump</strong> Varmepumpens Energy energidekning, Coverage, ∆Q (%) α (%)<br />
Electric Peak Load – Elecric <strong>Heat</strong>ing as Reference System<br />
› Relative energy saving<br />
of a heat pump system<br />
∆E (%) determined by:<br />
› Seasonal perf., SPF<br />
› Energy coverage fact., α<br />
› Mean efficiency for peak<br />
load system, η<br />
⎡<br />
∆E<br />
= ⎢1<br />
−<br />
⎣<br />
α<br />
SPF<br />
(1 − α) ⎤<br />
+ ⎥ ⋅100%<br />
η ⎦<br />
› Annual energy saving<br />
significantly affected<br />
by energy coverage, α<br />
20<br />
MARCH 7TH, 2013<br />
COWI POWERPOINT PRESENTATION
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