Direct contact heat transfer process and system for recovery of energy from geothermal brines or other hot aqueous solutions of a non-volatile solute, or for desalination, using staged evaporator-condenser units operating with a low boiling water-immiscible liquid hydrocarbon. Each stage comprises a closed vessel divided into two compartments, an evaporator and a condenser, by a bubble cap tray similar in construction to those used in distillation. In one embodiment, hot geothermal brine or other hot aqueous liquid is introduced into the liquid hydrocarbon contained in the lower compartment of each stage, causing boiling of the hydrocarbon. Hydrocarbon vapors pass from the evaporator compartment through the bubble caps to the upper condenser compartment where they are condensed in contact with a cooler water stream. The heated water stream under substantial pressure is fed to an expander or turbine to produce work. In another embodiment using the same staged heat transfer system for desalination, relatively hot fresh water is introduced into the liquid hydrocarbon contained in the lower compartment of each stage, causing boiling of the hydrocarbon, and the hydrocarbon vapors pass from the evaporator compartment to the upper condenser compartment where they are condensed in contact with a colder saline stream. The heated saline stream is flash evaporated and the vapors are condensed with a portion of this condensed stream taken off as product.
This application is a continuation-in-part of applications Ser. Nos. 861,907, filed Dec. 19, 1977, now abandoned and 907,143, filed May 17, 1978, U.S. Pat. No. 4,238,296.
Apparatus for producing power and desalinated water from geothermal fluid according to the present invention comprises: a geothermal power plant that produces power from geothermal fluid supplied thereto; means for supplying sea water to the condenser of said geothermal power plant that produces heated sea water; and a desalination plant to which the heated sea water is supplied and which produces drinking water. Preferably, the geothermal power plant that produces power comprises an organic Rankine cycle geothermal power plant that produces power. Alternatively, the geothermal power plant that produces power comprises an organic combined cycle Rankine cycle geothermal power plant that produces power. In a further alternative, the geothermal power plant that produces power comprises a closed cycle steam geothermal power plant that produces power. In a still further alternative, the geothermal power plant that produces power comprises an ammonia cycle geothermal power plant that produces power. As far as the desalination plant is concerned, the desalination plant preferably comprises a multi-flash desalination plant. In an alternative, the desalination plant comprises a reverse osmosis desalination plant.
There is disclosed a method and apparatus for exchanging heat between a first fluid and a second fluid immiscible with said first fluid comprising the step of presenting one of said fluids in finely divided form for direct contact with the others. One fluid may be a molten metal which is sprayed or bubbled through the other.
Apparatus for humidity and temperature control of the air in an enclosure comprising brine-vapor-air direct heat exchanger apparatus disposed in communication with an enclosure and a brine reservoir arranged to store brine and to be exposed to naturally occuring temperature gradients for desired conditioning of the brine. The temperature gradients may be relatively short term, such as day-night or may be longer term, such as summer-winter.
A roadway system and method for energy generation and distribution are presented. This system allows a geothermal infrastructure to be tied into the roadway system electricity grid. The geothermal infrastructure may include energy exchangers that are electrically connected to the roadway system electricity grid. By connecting the energy exchangers electrically to the roadway system electricity grid, the energy exchangers may be powered by solar and/or wind generating devices. In one embodiment of the invention, a roadway system for energy generation and distribution comprises a plurality of energy harnessing devices (e.g., solar and/or wind generating devices). The roadway system electricity grid is configured for mass distribution of electricity. The energy exchangers are configured to electrically connect to the roadway system electricity grid. Each of substantially all of the energy harnessing devices, is electrically connected to the roadway system electricity grid and positioned on part of one of the roads.
Creating a large fleet of vehicles, which gather wind energy and generate wind generated energy, such as electricity, is impeded by the cost to an individual vehicle owner. Accordingly, a system and corresponding method to gather wind energy and deposit stored wind generated energy for system credit is provided. The present invention includes a vehicle-based wind energy gathering device to gather wind energy and generate wind generated energy, a vehicle-based energy storage system, electrically coupled to the wind energy gathering device, to store wind generated energy, and means for depositing the stored wind generated energy for system credit. As such, individual vehicle owners have an incentive to participate in gathering wind energy and depositing wind generated energy, such as electricity. By taking advantage of potentially millions of participants and participating vehicles, the present invention creates a format for generating energy from multiple forms of wind energy on a wide-scale.
