Versions Available; Adaptivefunction Plus - RHOSS TCHEY 115 Instrucciones De Uso

I SECTION I: USER
I.1

VERSIONS AVAILABLE

The availabl e versions belonging to this product range are listed bel ow.
After having identified the unit, us e the following table to fi nd out about
some of the mac hine's features.
T Water production unit
C Cooling onl y
H Water cooling
E Scroll-type hermetic compr essors
Y R410A refrigerant fluid
n° compressor s
1
1
1
1
2
2
(*)The power value us ed to i dentify the model is approximate. For the
exact value, identify the machi ne and consult the attac hments (A1
Technical D ata).
P
With circulating pump
I.2

ADAPTIVEFUNCTION PLUS

The new AdaptiveFunction Plu s logic adapti ve regulati on, has been
excl usivel y patented by RHOSS S.p.A. It is the res ult of a long
partnership with the University of Padua. The various algorithm
devel opment operations were i mplemented and validated on units in the
Y-Flow range in the RHOSS S.p.A. Res earch&Devel opment
Laboratory using numerous tes t campaigns.
Objectives
 To guarantee optimal unit operation in the s ys tem in which it is
installed. Evolved adaptive logic.
 To obtain the best performance from a c hiller in terms of energy
efficienc y at full and partial c apacities. Low consumption chiller.
Operating logic
In general, the actual control logics on water chillers/heat pumps do not
consider the features of the s ystem in whic h the units are ins talled; they
usuall y regulate the retur n water temperature and are positioned so as
to ensure the operation of the chillers, givi ng less priority to the s ystem
requirements.
The new AdaptiveFunction Plu s adapti ve logic counters these logics
with the objecti ve of optimising the c hiller operation on the basis of the
system features and the effecti ve thermal load. The c ontroller regulates
the deli ver y water temperature and adjusts its elf, as and when required,
to the rel ati ve operating conditions using:
 the i nfor mation c ontained in the return and deli ver y water
temperature to estimate the wor king conditions thanks to a particul ar
mathematical for mula;
 a special adapti ve algorithm that us es this esti mate to vary the
val ues and the start-up and s witch- off limit values of the c ompressors;
the opti mised compress or start-up management guar antees a pr ecision
water suppl y to the user, reduci ng the fluctuati on around the set- point
val ue.
H Heat pump
Cooling capacit y (kW ) (*)
15
18
22
25
30
40
Main functions
Efficiency or Precision
Thanks to the evolved c ontrol, it is possibl e to run the chiller on two
different regulation s etti ngs to obtain the bes t possible performance in
terms of energ y efficienc y and considerable seas onal savings or high
water delivery temperature precision:
1. Low consumption chiller: "Economy" Option
It is well known that chillers wor k at full c apacity for j ust a ver y s mall
percentage of their operating time, while they wor k at partial capacity
for most of the s eas on. Therefore, the power they need to s upply
generally differs from the nominal design power, and oper ation at
partial capacity has a notic eable effec t on seasonal energy
perfor manc e and consumpti on.
This makes it nec essar y to run the unit s o that it is as efficient as
possible at partial c apacity. T he c ontr oller therefore ensures that the
water delivery temperature is as high as possible ( when operating as
a chiller) or as l ow as possibl e (when operating as a heat pump)
whilst c ompati ble with the thermal loads, meani ng that it is on a
sliding scale, unlike in traditi onal s ystems. T his prevents energy
wastage linked to the mai ntenance of pointlessl y onerous
temperature l evels for the chiller, ens uring that the rati o between the
power to be supplied and the energy to be us ed to produce it is
always at an optimum level. Fi nall y the right level of comfort is
availabl e to everyone!
Summer season: the unit that operates with a sliding s et-poi nt allows
seasonal energy savi ngs of around 8% c ompared to a traditional unit
that operates with a fi xed s et-poi nt.
Y
900
800
700
600
500
400
300
200
100
0
3
4
X Year divi ded into months (1 Januar y, 2 F ebruary, etc .).
Y Energy cons umption ( kWh).
Unit with fi xed set-point
Unit with sliding set- point
W inter season: the unit that operates with a sliding set-point
allows s eas onal energy s avings of around 13% compared to a
traditional unit that operates with a fi xed s et-poi nt and executed
calculations demons trate that s eas onal cons umption is equal to those
of a machine in CL ASS A.
Y
1600
1400
1200
1000
800
600
400
200
0
9
10
X Year divi ded into months (1 Januar y, 2 F ebruary, etc .).
Y Energy cons umption ( kWh).
Unit with fi xed set-point
Unit with sliding set- point
24
SECTION I: USER
5 6
7
8
9
10
X
11
12
1
2
3
4
X