King Fahd University of Petroleum and Minerals

King Abdullah City for Atomic & Renewable Energy (k.a.care)

Mohammad Raghib Shakeel

Esmail M A Mokheimer

Mohamed A Habib

The solar augmented chilled-water cooling system comprises a refrigeration cycle, a cooling tower, an air handling unit (AHU), a supplemental cycle and a solar energy harvesting unit. The supplemental cycle is in fluid communication with the refrigeration cycle, which is in fluid communication with the cooling tower, which in turn is in fluid communication with the supplemental cycle. The cooling tower cools a water stream by evaporation. The water stream from the cooling tower is passed to the supplemental cycle for further cooling using energy from the solar energy harvesting unit. The water stream is then passed to a condenser of the refrigeration cycle for its efficient operation at proper temperature. The water stream is then retuned back to the cooling tower to be re-cooled. In the refrigeration cycle, an evaporator uses operation of the associated condenser for providing cooling effect through the AHU.

Solar augmented chilled-water cooling system

A heating and cooling system powered by renewable energy and assisted with geothermal energy includes a solar cycling unit, a supercritical carbon dioxide (S—CO) unit, and a refrigerant cycling unit. Solar energy obtained at the solar cycling unit may be used to power the S—COcycling unit. To do so, the solar cycling unit utilizes a solar collector, a thermal energy storage, and a heat exchanger along with a first working fluid which is preferably molten salt or Therminol. Next, the energy generated at the S—COcycling unit, which preferably circulates S—COas a second working fluid, may be used to operate the refrigerant cycling unit. In the refrigerant cycling unit, Tetrafluroethene is preferably used as the third working fluid to produce required cooling effects. Additionally, geothermal heat exchangers may be integrated into the system for use during varying weather conditions.

Heating and cooling system powered by renewable energy and assisted by geothermal energy

A hybrid geothermal electrical power generation system that utilizes the heat from a deep geothermal reservoir to vaporize a working fluid, such as steam, COor an organic fluid. The vaporized working fluid is used to turn a turbine connected to an electrical power generator. A solar collector may be used to increase the temperature of the working fluid during sunlight hours and a thermal storage unit may be utilized to increase the temperature of the working fluid during the night. A supercritical COpower generation cycle may be used alone or in combination with a steam turbine power generation cycle to utilize all of the heat energy. A vapor compression cycle, a vapor absorption cycle may be utilized to provide heating and cooling. A low temperature shallow geothermal reservoir may be used as a heat exchanger to regulate or store excess heat.

Growing community of inventors

Dhahran, Saudi Arabia

Mohammad Raghib Shakeel