A system includes a waste heat recovery heat exchanger configured to heat a heating fluid stream by exchange with a heat source in a crude oil associated gas processing plant. The system includes an Organic Rankine cycle energy conversion system including a pump, an energy conversion heat exchanger configured to heat the working fluid by exchange with the heated heating fluid stream, a turbine and a generator configured to generate power by expansion of the heated working fluid, a cooling element configured to cool the expanded working fluid after power generation, and an accumulation tank. The heating fluid flows from the accumulation tank, through the waste heat recovery heat exchanger, through the Organic Rankine cycle energy conversion system, and back to the accumulation tank.

An improved heat engine employing a dual-component working fluid and configured to generate internal heat from one component of the working fluid that heats the other component through the physical contact between them such that together with the addition of external heat, the engine advantageously yields enhanced work extraction efficiency through separate, parallel expansion of each of the working fluids.

An improved heat engine employing a dual-component working fluid and configured to generate internal heat from one component of the working fluid that heats the other component through the physical contact between them such that together with the addition of external heat, the engine advantageously yields enhanced work extraction efficiency through separate, parallel expansion of each of the working fluids.

A dual-cycle heat engine employing a first cycling working fluid and a second cycling working fluid whose cycles overlap when fused into a combined working stream so as to preserve compression heat generated during compression of the first working fluid thereby yielding enhanced work extraction when complying with additional thermodynamic requirements.

A dual-cycle heat engine employing a first cycling working fluid and a second cycling working fluid whose cycles overlap when fused into a combined working stream so as to preserve compression heat generated during compression of the first working fluid thereby yielding enhanced work extraction when complying with additional thermodynamic requirements.

An air energy power machine comprises an air compressor (1). An air inlet end of the air compressor is connected with an air storage tank (2) through a pipeline; an air outlet end of the air compressor is connected with a first heat exchanger (3) through a pipeline; a second heat exchanger (4) is connected to the right side of the first heat exchanger through a pipeline; the second heat exchanger is connected with the air storage tank to form a closed loop; a first liquid pump (5) connected with the first heat exchanger through a pipeline is arranged below the first heat exchanger; a first liquid collection tank (6) is connected to the first liquid pump; a first steam turbine (7) is arranged above the first heat exchanger; a steam inlet of the first steam turbine is connected with the first heat exchanger through a pipeline.

A thermal utilization system is capable of producing power, storing energy via a chemical or and a hydropower-elevation means. It also capable of transport fluid as vapor over obstacles and terrains, as well as desalinate water. It may in some embodiments do all or some of these tasks simultaneously and with the same amount of energy. It may run with any source of energy including renewable energy sources such as solar energy, and wind. The system may use that energy to run a heat engine and, at the same time, stores that energy via chemical separation. When energy is needed, the system may withdraw the chemical substances and lets them interact to claim the energy back, and then use it to run a heat engine and desalinate water. Some parts of the system can be used for cooling and heating. The system may be configured to be an air conditioner unit or a refrigerator that has an internal back up energy storage.

A combined cooling, heating and power system is formed by integrating a CO.sub.2 and ORC cycle systems, and an LNG cold energy utilization system on the basis of an SOFC/GT hybrid power generation system. The combined systems provide utilization of energy and low carbon dioxide emission. The SOFC/GT is used as a prime mover, high-temperature, medium-temperature, and low-temperature waste heat of the system are recovered through a CO.sub.2 and ORC cycles, cold energy (for air conditioning and refrigeration), heat, power, natural gas, ice, and dry ice is provided by using LNG as a cold source of the CO.sub.2 cycle and the ORC cycle, and low carbon dioxide emission of the system is achieved by condensation and separation of CO.sub.2 from flue gas, so energy losses of the combined system is reduced, and efficient and cascade utilization of energy is achieved, thereby providing energy conservation and emission reduction effect.

The present invention discloses an Organic Rankine cycle system with supercritical double-expansion two-stage heat recovery, comprising a first-stage evaporation cycle system, a second-stage evaporation cycle system and a mixing system. The present invention has lower heat loss in the heat exchange process, better heat exchange effect and improved utilization efficiency of waste heat.

The present invention discloses an Organic Rankine cycle system with supercritical double-expansion two-stage heat recovery, comprising a first-stage evaporation cycle system, a second-stage evaporation cycle system and a mixing system. The present invention has lower heat loss in the heat exchange process, better heat exchange effect and improved utilization efficiency of waste heat.