Page 125 - Low Temperature Energy Systems with Applications of Renewable Energy

114 Low-Temperature Energy Systems with Applications of Renewable Energy

Fig. 3.27 Climatic zones, HDD index and HDD zones for central Europe [18].

WLHPS held at least about a 10% advantage in reduced energy consumption over
electric boilers. For all cases studied, the WLHPS had a maximum energy savings
over electric boilers of about 19%. As can be seen, WLHPS are particularly advanta-
geous along the Yangtze River and areas north of it.

Fig. 3.28 (A) External view of the building; (B) Distribution of thermal zones in the occupied
floors; (C) Effect of variations in minimum and maximum water-loop set-point temperatures
relative to annual total thermal consumption [18].