Figure 7 Changes of energy savings coefficient for different service rates in case of instance with (a) one-sector BSSs, (b) three-sector BSSs.
For the case of guaranteed 12.2/384 kb/s service rates, Figure 7b shows a fall in the energy savings coefficient to approximately 10%.
This is because the network must accommodate increased user traffic, which results in reductions in the number of powered off CSs and consequently in a lower energy savings coefficient.
Figure 11 Trends in changes of energy savings coefficient for guaranteed voice/data service rates equal to 12.2/384 kb/s in the case of (a) one sector BSS (Instance 5), (b) three sector BSS (Instance 11). Figure 12 indicates the influence of switching granularity on monthly energy savings for all the combinations of voice/data service rates.
However, higher energy-saving coefficients in the period of higher user activity during a working day have been obtained when higher switching granularity is used.
The results show that the integration of the proposed control system with the modified air conditioning system leads to increase the energy saving and improve the coefficient of performance over a wide range of ambient temperatures (35 57) °C.
Optical memory effect plays a critical role in energy-saving coefficient of electrochromic devices (ECDs).
Results showed that the installed cooling system at Central Queensland University achieved 18% energy savings with maximum coefficient of performance of 0.83 and 48% desiccant efficiency.
Four different parameters are considered to be studied, namely coefficient of performance (COP), energy saving, cooling capacity and the compressor auto-shut down in very high weather temperature.
Results show that GBL distributes its scores more evenly while GM concentrates on energy saving with greater diversity in land supply and building operations (normalized coefficients of variation of 0.435 and 0.350).
The results show that the coefficient of performance of the chiller has reached 0.63 and the primary energy saving of 35% is estimated.
