US 2025/0091011 A1Published application

Desalination and cooling system integrating air gap membrane distillation and ejector cooling cycle

AssigneeKing Fahd University of Petroleum and Minerals

InventorsDahiru Umar LAWAL, Binash IMTEYAZ, Turki Nabieh BAROUD, Umer ZAHID

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Abstract

A desalination and cooling system integrating an Ejector Cooling Cycle (ECC) and an Air Gap Membrane Distillation (AGMD) system. The ECC system includes a generator, an evaporator, an ejector, and a condenser. The generator produces a primary flow of refrigerant, the evaporator provides cooling and a secondary flow of the refrigerant, and the ejector combines these flows to generate a super-heated stream of the refrigerant, which the condenser cools. The AGMD system, comprising a feed chamber, a coolant chamber, an air gap chamber, and a membrane with pores, allows water vapors from a hot stream to pass from the feed chamber to the air gap chamber of the AGMD system. The ECC and AGMD systems are connected at the condenser, where the super-heated stream of the refrigerant heats the cold stream to produce the hot stream, facilitating efficient desalination and cooling.

Claims20

Dependent claims

A desalination and cooling system, comprising:

an ejector cooling cycle (ECC) system comprising
a generator configured to generate a primary flow of a refrigerant,
an evaporator configured to provide cooling and provide a secondary flow of the refrigerant,
an ejector configured for the primary flow and the secondary flow to pass through to obtain a super-heated stream of the refrigerant, and
a condenser configured to cool the super-heated stream of the refrigerant;
and
an air gap membrane distillation (AGMD) system comprising
a feed chamber configured to receive a hot stream comprising water,
a coolant chamber configured to receive a cold stream comprising water,
an air gap chamber disposed between the feed chamber and the coolant chamber, and
a membrane disposed between the feed chamber and the air gap chamber, the membrane comprising a plurality of pores configured to allow water vapors originating from the hot stream to pass from the feed chamber through the membrane to the air gap chamber,
wherein the ECC system and the AGMD system are connected at the condenser so that the cold stream is heated by the super-heated stream of the refrigerant at the condenser to produce the hot stream.

9 more elements

A desalination and cooling system, comprising:

an ejector cooling cycle (ECC) system comprising
a generator configured to generate a primary flow of a refrigerant,
an evaporator configured to provide cooling and provide a secondary flow of the refrigerant,
an ejector configured for the primary flow and the secondary flow to pass through to obtain a super-heated stream of the refrigerant, and
a condenser configured to cool the super-heated stream of the refrigerant, the condenser comprising a wall separating a hot medium compartment and a cold medium compartment, the hot medium compartment configured to receive the super-heated stream of the refrigerant;
and
an air gap membrane distillation (AGMD) system comprising
a coolant chamber configured to receive a feed stream comprising water,
the cold medium compartment of the condenser of the ECC system configured to receive the feed stream from the coolant chamber,
an air gap chamber disposed between the cold medium compartment and the coolant chamber, and
a membrane disposed between the cold medium compartment and the air gap chamber, the membrane comprising a plurality of pores configured to allow water vapors to pass from the cold medium compartment through the membrane to the air gap chamber,
wherein the ECC system and the AGMD system are connected at the condenser so that the feed stream, in the cold medium compartment of the condenser, is heated by the super-heated stream of the refrigerant to generate the water vapors.

9 more elements

Dependencies are inferred from the claim text.