(19)
(11) EP 2 000 754 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
27.03.2013 Bulletin 2013/13

(43) Date of publication A2:
10.12.2008 Bulletin 2008/50

(21) Application number: 08157531.8

(22) Date of filing: 04.06.2008
(51) International Patent Classification (IPC): 
F25B 25/00(2006.01)
 F25B 49/02(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 04.06.2007 IT BO20070399

(71) Applicant: RHOSS S.p.A.
45031 Arqua' Polesine (IT)

(72) Inventors:
  • Zen, Alessandro
    45100 Rovigo (IT)
  • Cecchinato, Luca
    35131 Padova (IT)
  • Beghi, Alessandro
    35126 Padova (IT)
  • Bodo, Cristian
    35030 Rubano (IT)
  • Scodellaro Alessandro
    33033 Codroipo (IT)
  • Albieri, Michele
    33078 San Vito al Tagliamento (IT)

(74) Representative: Jorio, Paolo et al
Studio Torta S.p.A. Via Viotti, 9
10121 Torino
10121 Torino (IT)

   


(54) Method for estimation the thermal load of a circuit for a service fluid at outlet from a refrigerating machine


(57) In a refrigerating machine (3) for an air-conditioning system (1), which is provided with one or more fan coils (2) and with a hydronic circuit (15) having a delivery branch (16) for circulation of a service fluid (5) from the refrigerating machine (3) to the fan coils (2) and a return branch (17) for return of the service fluid (5) at inlet to the refrigerating machine (3), via a pair of temperature sensors (21, 22), a delivery temperature (TDLV) of the service fluid (5) at outlet from the refrigerating machine (3) and a return temperature (TRET) of the service fluid (5) at inlet to the refrigerating machine (3) are measured, and the thermal load (FL) of the hydronic circuit (15) is estimated (106, 107, 109, 111) by processing, via a Kalman filter, the measurements of the delivery temperature (TDLV) and return temperature (TRET).







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