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1. WO2020109213 - COOLING SYSTEM FOR EFFICIENT OPERATION

Publication Number WO/2020/109213
Publication Date 04.06.2020
International Application No. PCT/EP2019/082380
International Filing Date 25.11.2019
IPC
F25B 49/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
49Arrangement or mounting of control or safety devices
G01K 13/02 2006.01
GPHYSICS
01MEASURING; TESTING
KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
13Adaptations of thermometers for specific purposes
02for measuring temperature of moving fluids or granular materials capable of flow
CPC
F25B 2400/051
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
2400General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
05Compression system with heat exchange between particular parts of the system
051between the accumulator and another part of the cycle
F25B 2600/21
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
2600Control issues
21Refrigerant outlet evaporator temperature
F25B 49/005
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
49Arrangement or mounting of control or safety devices
005of safety devices
Applicants
  • DANFOSS A/S [DK]/[DK]
Inventors
  • VESTERGAARD, Niels P.
  • VAN BEEK, Johan
Agents
  • STEVENS, Brian
  • PETERSEN, Frank
Priority Data
18209030.829.11.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) COOLING SYSTEM FOR EFFICIENT OPERATION
(FR) SYSTÈME DE REFROIDISSEMENT À FONCTIONNEMENT EFFICIENT
Abstract
(EN)
The invention relates to a cooling system and operating method therefor with a direct expansion cooling circuit for an ammonia refrigerant. A compressor (12) is provided to compress ammonia vapor (11). A condenser is provided to condense the ammonia vapor to obtain liquid ammonia (20). An evaporator (32) is provided to evaporate the liquid ammonia. A superheat vapor quality sensor (40) is arranged at a conduit 34 between at least a portion of the evaporator (32) and the compressor (12). The superheat vapor quality sensor (40) comprises a heating element (48) and a temperature sensing element (52). The superheat vapor quality sensor (40) is disposed to deliver a sensor signal S indicative of a superheat vapor quality X of refrigerant flowing through the conduit (34) from an output of the temperature sensing element (52). The superheat vapor quality sensor (40) is arranged on a wall of a horizontally arranged portion of the conduit (34) in a position forming an angle of more than 120° to a vertical upward direction.
(FR)
L'invention concerne un système de refroidissement et son procédé de fonctionnement, qui est doté d'un circuit de refroidissement à détente directe pour un réfrigérant ammoniac. Le système comprend un compresseur (12) pour comprimer la vapeur d'ammoniac (11), un condenseur pour condenser la vapeur d'ammoniac afin d'obtenir de l'ammoniac liquide (20), et un évaporateur (32) pour évaporer l'ammoniac liquide. Un capteur de qualité de vapeur de surchauffe (40) est disposé au niveau d'un conduit entre au moins une partie de l'évaporateur (32) et le compresseur (12). Le capteur de qualité de vapeur de surchauffe (40) comprend un élément chauffant (48) et un élément de détection de température (52). Le capteur de qualité de vapeur de surchauffe (40) est disposé pour délivrer un signal de capteur S indicatif d'une qualité de vapeur de surchauffe X du réfrigérant s'écoulant à travers le conduit (34) à partir d'une sortie de l'élément de détection de température (52). Le capteur de qualité de vapeur de surchauffe (40) est disposé sur une paroi d'une partie disposée horizontalement du conduit (34) dans une position formant un angle supérieur à 120° par rapport à une direction verticale vers le haut.
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Latest bibliographic data on file with the International Bureau