公开(公告)号：WO2023079116A1

公开(公告)日：2023-05-11

申请号：PCT/EP2022/080879

申请日：2022-11-04

Applicant: MAERSK CONTAINER INDUSTRY A/S

Inventor： POULSEN, Niels Nielsen ,  MADSEN, Poul Kim ,  FÖSEL, Georg Patrick Franz ,  NICULUŢĂ, Marian-Ciprian ,  STOLBERG, Tobias ,  SCHMIDT, Frede

IPC: F25B1/10 ,  F25B6/04 ,  F25B7/00 ,  F25B39/02 ,  F25B40/00 ,  F25B40/02

Abstract: Provided is a refrigeration system (100) for a transport unit (10). The refrigeration system (100) has a refrigeration cycle (101) comprising a compressor (120), an evaporator (110), a condenser (151) fluidically coupled downstream of the compressor (120) and upstream of the evaporator (110), an expansion valve (140) fluidically coupled downstream of the condenser (120) and upstream of the evaporator (110), and a suction gas heat exchanger (160) comprising a liquid line side (161) and a suction line side (162). The liquid line side (161) is fluidically coupled downstream of the condenser (120) and upstream of the expansion valve (140), and the suction line side (162) is fluidically coupled downstream of the evaporator (110) and upstream of the compressor (120). The suction gas heat exchanger (160) is configured to transfer heat between refrigerant in the liquid line side (161) and refrigerant in the suction line side (162).

公开(公告)号：WO2023084127A1

公开(公告)日：2023-05-19

申请号：PCT/EP2022/082040

申请日：2022-11-15

Applicant: MAERSK CONTAINER INDUSTRY A/S

Inventor： FÖSEL, Georg Patrick Franz

IPC: F25B49/00 ,  F25B1/10 ,  F25B41/24

Abstract: Provided is a method (300) of determining a state of charge of refrigerant in a refrigeration system (100), the refrigeration system (100) having a compressor (120), an expansion valve (140), a condenser side (101) for passing refrigerant from the compressor (120) to the expansion valve (140), and an evaporator side (102) for passing refrigerant from the expansion valve (140) to the compressor (120). The method (300) comprises determining at least one performance characteristic of the refrigeration system (100) when refrigerant is prevented from flowing into the evaporator side (102) from the condenser side (101), and, when one or more predetermined criteria are met on the basis of the performance characteristic, determining a state of charge in the refrigeration system (100).

公开(公告)号：WO2023079114A1

公开(公告)日：2023-05-11

申请号：PCT/EP2022/080877

申请日：2022-11-04

Applicant: MAERSK CONTAINER INDUSTRY A/S

Inventor： POULSEN, Niels Nielsen ,  STOLBERG, Tobias ,  NICULUŢĂ, Marian-Ciprian ,  MADSEN, Poul Kim ,  FÖSEL, Georg Patrick Franz ,  SCHMIDT, Frede

IPC: F25B7/00 ,  F25B39/02 ,  F25B41/385 ,  F25B41/20 ,  F25B6/04 ,  F25B40/00 ,  F25B40/02 ,  F25B1/10

Abstract: Provided is a cascade refrigeration system (100) for a transport unit (10). The cascade refrigeration system (100) has a first refrigeration cycle (101) comprising a first compressor (120) and a first expansion valve (140), a second refrigeration cycle (102) comprising a second compressor (220) and a second expansion valve (240), and a cascade heat exchanger (150). The cascade heat exchanger (150) comprises a condenser side (151) fluidically coupled downstream of the first compressor (120) and upstream of the first expansion valve (140), and an evaporator side (152) fluidically coupled downstream of the second expansion valve (240) and upstream of the second compressor (220). The cascade refrigeration system (100) also comprises a pre-cooler (180) comprising a first side (181) and a second side (182). The first side (181) is fluidically coupled downstream of the first compressor (120) and upstream of the condenser side (151) of the cascade heat exchanger (150), and the pre-cooler (180) is configured to transfer heat between refrigerant in the first side (181) and refrigerant in the second side (182).