US 11,859,879 B1
Solar augmented chilled-water cooling system
Esmail M. A. Mokheimer, Dhahran (SA); and Mohammad R. Shakeel, Dhahran (SA)
Assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA); and King Abdullah City for Atomic & Renewable Energy (K.A.CARE), Riyadh (SA)
Filed by KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA); and King Abdullah City for Atomic & Renewable Energy (K.A.CARE), Riyadh (SA)
Filed on Jul. 21, 2022, as Appl. No. 17/870,438.
Int. Cl. F25B 25/02 (2006.01); F24F 5/00 (2006.01); F25B 27/00 (2006.01)
CPC F25B 25/02 (2013.01) [F24F 5/0046 (2013.01); F25B 27/005 (2013.01); F25B 27/007 (2013.01); F24F 2005/0067 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A solar augmented chilled-water cooling system comprising:
a vapor absorption system;
a vapor compression system;
a cooling tower; and
an air handling unit (AHU);
wherein the vapor absorption system comprises:
a first evaporator;
a first condenser;
a generator;
an absorber;
a parabolic trough collector (PTC) system comprising a plurality of parabolic troughs;
a first pump and a second pump; and
a first throttling valve;
wherein the vapor absorption system is in fluid communication with the vapor compression system via a fourth pump; and the vapor compression system comprises:
a compressor;
a second condenser;
a third pump;
a second evaporator; and
a second throttling valve;
wherein a hot outlet stream from the second condenser is connected to an inlet of the cooling tower, and a cool water stream from the cooling tower is connected to a first three-way valve; and
and the cooling tower comprises:
a plurality of chillers;
a plurality of tubes to transfer a coolant fluid to the plurality of chillers; and
a first heat exchanger;
wherein the cooling tower is in fluid communication with the vapor absorption system through the first three-way valve; and
the cooling tower has a plurality of slits configured so that cool air enters the cooling tower through the slits and exits through the top of the tower; and
the cooling tower is configured to supply water to the first evaporator to further reduce the temperature of water from the cooling tower via the first three-way valve;
the cool water stream from the cooling water tower is in fluid communication with an inlet stream of the first evaporator;
an outlet stream of the first evaporator is in fluid communication with a second three-way valve, wherein an outlet stream from the second three-way valve is connected to the fourth pump; and
a temperature difference between the inlet stream of the first evaporator and an outlet stream of the first evaporator is between 20° C. and 60° C.;
the cooling tower is configured to directly supply water to the second condenser via the first three-way valves;
the cooling tower allows a portion of the water to pass through the first evaporator before mixing with remaining water coining directly from the cooling tower and passing to the second condenser;
the PTC system provides thermal energy to the generator where a liquid with low boiling point is evaporated to form a vapor.