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ADAPTIVEFUNCTION PLUS
The new AdaptiveFunction Plus adaptive control logic is an exclusive RHOSS patent and the result of a long collaboration with the University of Padua.
The various algorithm processing and development operations have been implemented and tested on the EasyPACK range of units in the RHOSS
Research&Development Laboratory by means of numerous test campaigns.
Objectives
•
To always guarantee optimal unit operation in the system in which it is installed. Evolved adaptive logic. To achieve the best performance from a
Operating logic
In general, the actual control logics on chillers/heat pumps do not consider the features of the system in which the units are installed; they usually control
the return water temperature and there aim is to guarantee the operation of the chillers, giving less priority to the system requirements.
The new AdaptiveFunction Plus adaptive logic contrasts these logics with the objective of optimising chiller operation according to the system cha-
using:
•
•
a special adaptive algorithm that uses this estimate to vary the start- up and switch-off threshold values and position of the compressors; optimised
value.
Main functions
Thanks to the advanced control, the chiller can run on two different control settings in order to obtain the best possible performance in terms of energy
1.
Low consumption chiller:"Economy"
Option It is known that chillers work at full load for only a very small percentage of their operating time and at partial load for most of the season.
energy performance and consumption.
rature is as high as possible (when operating as a chiller) or as low as possible (when operating as a heat pump) whilst being compatible with the
thermal loads, which means it shifts, unlike traditional systems.
This prevents energy waste associated with the unnecessarily onerous chiller temperature levels being maintained, thereby guaranteeing that
ble to everyone!
Summer season: a unit working with a sliding set-point allows sea-
sonal energy savings of about 8% compared to a traditional unit that
Y
900
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700
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100
0
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X
Year divided into months (1 January, 2 February, etc.)
Y
Power consumption (kWh)
Unit with sliding set-point
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10
X
Section I :: User
Low consumption chiller.
Winter season: a unit working with a sliding set-point allows seasonal
energy savings of about 13% compared to a traditional unit that opera-
is equivalent to that of a CLASS A machine.
Y
1600
1400
1200
1000
800
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400
200
0
9
X
Year divided into months (1 January, 2 February, etc.)
Y
Power consumption (kWh)
Unit with sliding set-point
50
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1
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X
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