EP 2253897 B1 20141203 - METHOD AND SYSTEM FOR CONTROLLING A PLURALITY OF REFRIGERATING MACHINES
Title (en)
METHOD AND SYSTEM FOR CONTROLLING A PLURALITY OF REFRIGERATING MACHINES
Title (de)
VERFAHREN UND SYSTEM ZUM STEUERN EINER VIELZAHL VON KÄLTEMASCHINEN
Title (fr)
PROCÉDÉ ET SYSTÈME POUR COMMANDER UNE PLURALITÉ DE MACHINES FRIGORIFIQUES
Publication
Application
Priority
- IT BO20090313 A 20090515
- IT BO20100225 A 20100413
Abstract (en)
[origin: EP2253897A1] A control system (11) for controlling a plurality of refrigerating machines (2) of an air-conditioning plant (1) having fan coil units (3) connected to the refrigerating machines (2) via an hydronic circuit (4) within which a coolant flows, the hydronic circuit (4) having a bypass duct (9) connecting a delivery duct (5) with a return duct (6), the control system (11) having: temperature sensors (12-14) to measure the temperature (TDLV) of the fluid in the delivery duct (5) upstream of the bypass duct (9), the temperature (TRET) of the fluid in the return duct (6) and the temperature (TLIN) of the fluid in the delivery duct (5) downstream of the bypass duct (9); a supervision unit (15) configured to provide an estimate of the thermal load (PLE) of the service circuit (4) as a function of the measured temperatures (TDLV, TRET, TLIN) and to determine operating states (ST i ) and part load ratios (PLR i ) to set for the refrigerating machines (2) such as to enable them to provide an overall cooling capacity that satisfies the estimated thermal load (PLE) with the minimum consumption of electric power.
IPC 8 full level
F25B 49/00 (2006.01); F24F 11/00 (2006.01); F25D 17/02 (2006.01)
CPC (source: EP US)
F24F 11/30 (2017.12 - EP); F24F 11/46 (2017.12 - EP US); F24F 11/54 (2017.12 - EP US); F24F 11/62 (2017.12 - EP US); F25B 49/00 (2013.01 - EP); F25D 17/02 (2013.01 - EP); F24F 2110/00 (2017.12 - EP); F24F 2140/20 (2017.12 - EP); F25B 2400/06 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
EP 2253897 A1 20101124; EP 2253897 B1 20141203; ES 2531263 T3 20150312; IT 1399586 B1 20130426; IT BO20100225 A1 20101116; PL 2253897 T3 20150630
DOCDB simple family (application)
EP 10162899 A 20100515; ES 10162899 T 20100515; IT BO20100225 A 20100413; PL 10162899 T 20100515