US 12,434,196 B1
Dual housing vapor absorption refrigeration system
Naef A.A. Qasem, Dhahran (SA)
Assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed by KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed on Jun. 20, 2025, as Appl. No. 19/244,726.
Application 19/244,726 is a continuation of application No. 18/163,944, filed on Feb. 3, 2023.
This patent is subject to a terminal disclaimer.
Int. Cl. F25B 15/00 (2006.01); B01D 61/36 (2006.01); C02F 1/44 (2023.01); F25B 15/06 (2006.01); C02F 103/08 (2006.01)
CPC B01D 61/368 (2013.01) [B01D 61/364 (2013.01); B01D 61/366 (2013.01); C02F 1/447 (2013.01); F25B 15/00 (2013.01); F25B 15/06 (2013.01); C02F 2103/08 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A dual housing vapor-absorption refrigeration (VAR) system, comprising:
a condenser;
an evaporator;
wherein the condenser and the evaporator are housed within a first housing;
a saline water feed stream;
an absorber;
a first desorber and a second desorber;
a first heat exchanger and a second heat exchanger;
wherein the absorber, the first desorber, the second desorber, the first heat exchanger, and the second heat exchanger are housed within a second housing;
at least four throttling valves;
at least two pumps; and
a direct contact membrane distillation-absorber (DCMD-Abs) section, wherein the DCMD-Abs section comprises:
a saltwater feed compartment and a water compartment, wherein the saltwater feed compartment and the water compartment are separated by a membrane, wherein the membrane permits water vapor to pass from the saltwater feed compartment to the water compartment, wherein the water compartment includes a DCMD condenser to condense the water vapor passing through the membrane; wherein:
the absorber is in fluid communication with the second heat exchanger and configured to pass a solution from the absorber to the second heat exchanger via a second pump;
the second heat exchanger is in fluid communication with the first heat exchanger and configured to pass the solution from the second heat exchanger to the first heat exchanger via a first pump;
the first heat exchanger is in fluid communication with the first desorber and configured to pass the solution from the first heat exchanger to the first desorber to heat the solution in the first desorber with a heater;
the first desorber is in fluid communication with the first heat exchanger and configured to return a first separated desorber stream to the first heat exchanger;
the first desorber is in fluid communication with the second desorber and configured to pass a second separated desorber stream to the second desorber;
the first heat exchanger is in fluid communication with the condenser and configured to pass the first separated desorber stream from the first heat exchanger to the condenser via a first throttling valve of the at least four throttling valves;
the second desorber is in fluid communication with the condenser and configured to pass the second separated desorber stream from the second desorber to the condenser via a second throttling valve of the at least four throttling valves;
the second desorber is in fluid communication with the second heat exchanger and configured to pass a first heat exchanger stream from the second desorber to the second heat exchanger;
the second heat exchanger is in fluid communication with the absorber and configured to pass the first heat exchanger stream from the second heat exchanger to the absorber via a third throttling valve of the at least four throttling valves;
the condenser is in fluid communication with the DCMD-Abs section and configured to pass a first stream to pass a first stream from the condenser to from the condenser to the DCMD-Abs section to produce water;
the condenser is in fluid communication with the evaporator and configured to pass a rejected DCMD-Abs stream from the condenser to the evaporator via a fourth throttling valve of the at least four throttling valves; and
the absorber is in fluid communication with the DCMD-Abs section and configured to pass a second stream from the absorber to the DCMD-Abs section to produce water.