User Manual

14
Simulation results
Predictive heating control Reference A Reference B
Heating energy consumption:
Useful energy in [kWh/m
2
]
151
144
(-4 %)
174
(+13 %)
Pump runtime zone pump
in [h] per year (8760 h)
3'081 3'077
(0%)
6'237
(+102%)
Comfort:
Lower deviation from room
temperature setpoint in [Kh]
310 2'331
(+652%)
427
(+38%)
Table 4-1:
Overview of simulation results
Reference A: Economy mode refers to the period when the room temperature is set back compared to
the Comfort temperature. Heating is switched off if the building contains enough stored heat to maintain
the current Economy room temperature setpoint.
Reference B: Economy mode refers to the period when the room temperature is set back compared to
the Comfort temperature. The heating limit switch determines switch-on/-off of heating.
Heating energy consumption
Predictive heating control and Reference A show ca. the same amount of heating
energy consumption. Reference B, due to the higher heat output during Economy,
shows a higher consumption value (+ 13%).
In real-life, predictive heating controllers will result in higher savings if the building
model parameters can be adapted, resulting in improved control settings.
Auxiliary energy consumption (zone pump)
Savings in electricity as the higher-value type of energy increasingly gain
importance due to ever decreasing heating energy consumption thanks to
improved building insulation. The predictive heating controller greatly reduces
electric motor energy consumption for the zone pump. In Reference B, pump
runtime is more than 100% higher than with predictive heating control.
Comfort
Comfort in predictive heating control is clearly superior, with fewer accumulated low
deviations of the room temperature setpoint.
Reference B contains 2'331 Kh lower deviations from the room temperature
setpoint, resulting in significant loss of comfort that is unacceptable for operations.