Disclosed are a thermoacoustic engine with high conversion efficiency from heat energy to acoustic energy and a designing method for the thermoacoustic engine. A stack of the thermoacoustic engine has a plurality of flow passages extending through a thermoacoustic piping section. A hot heat exchanger is coupled to one end in a longitudinal direction of the stack. A cold heat exchanger is coupled to the other end in the longitudinal direction of the stack. And a length in the longitudinal direction of the hot heat exchanger is greater than a length in the longitudinal direction of the stack, and is greater than a length in the longitudinal direction of the cold heat exchanger.

A sliding door closure system is provided including close and energy harvesting to recover kinetic energy from the motion of the door. According to some embodiments, the relative motion between a sliding door and sliding door track may be configured to drive a generator. The generator may be driven by a driving a wheel rotationally connected to the generator. Examples include driving the generator by a friction wheel, by a chain and sprocket, or by a gear and rack. The generator may recover kinetic energy from the motion of the door during the deceleration of the soft close function. Energy recovered from the door may be stored and used to assist the motion of the door or to operate sensors to monitor the operation of the door closure system. The door closure system may transmit data and preserve a record of use.

A thermoacoustic electric generator system includes: a thermoacoustic engine provided in an annular tube; a turbine provided in a branched tube and rotating when receiving acoustic energy, which is generated by thermoacoustic oscillation of working gas in the thermoacoustic engine; and a generator for converting kinetic energy, which is generated by rotation of the turbine, to electric energy. The turbine is provided at a specified position that belongs to a region between a first position and a second position in each region of the branched tube, the first position being an intermediate position between one end and the other end, and the second position being an intermediate position between the first position and the other end.

Positive deep ocean pressure acts as force upon a containment being the negative pressure area for which water may first enter under force. The containment and apparatuses which allow energy production to occur are lowered to a specific depth within a body of water from a floating platform (Ref 40) or water vessel, then anchored by the systems own weight that may be between 30,000 and 40,000 pounds, or less when used in conjunction with water ejectors. The energy system may be hung at a specific depth within the body of water and will make continuous energy for use as electricity by; 1) utilizing the naturally occurring pressure at various water body depths, 2) applying the pressure through electrical generating devices, 3) provide for an internal pipe pathway and expandable water bladder or solid pressure tank that maintains a specific pressure necessary to return the water to the body of water after overcoming the naturally occurring pressure due to the ocean depth, 4) Ensure all Marine Mammals are Protected, 5) Embody a series of subsea cables (Ref 41) Several alternative primary modes are described beyond FIG. 1, by FIG. 2, FIG. 3, and FIG. 4. FIG. 2 provides for a combined intakes which increase volume and pressure before allowing velocity to return water flow to the water body, while FIG. 3 embodies water ejector pressure (Ref 38) to increase water velocity to return water to the water body. FIG. 4 embodies a similar process as FIG. 1 and FIG. 2, but also includes gravitational force to make additional energy before returning water to the water body. The conservation of fluid flow states; inflow always equals outflow (Ref 39).

A processing system including a chamber that includes one or more sidewalls defining an internal volume, one or more heat sources configured to generate heat, a liner disposed in the internal volume and lining one or more sidewalls, and one or more cooling channels. The processing system includes a fluid system in fluid communication with the cooling channels, the fluid system including one or more supply lines configured to supply a fluid to the cooling channels at a first temperature, and one or more return lines configured to flow the fluid from the cooling channels at a second temperature that is higher than the first temperature, and a fluid motor configured to move the fluid. The processing system includes an energy harnessing device configured to harness energy to produce electrical energy, the energy harnessing device including one or more turbines.

Systems, methods, and devices for energy storage are provided. A system for energy storage includes a thermomechanical-electrical conversion subsystem for converting energy formats and a mechanical and thermal storage unit for storing energy formats. The thermomechanical-electrical conversion subsystem includes a storage subsystem including a compressor and a first thermal energy exchanger and a generation subsystem including a power generator and a second thermal energy exchanger. The storage subsystem compresses a fluid to generate compressed fluid and thermal energy. The generation subsystem generates power from the compressed fluid and the thermal energy. The mechanical and thermal storage unit includes a pressure vessel for storing the compressed fluid and a thermal energy storage for storing the thermal energy generated by the fluid compression and for providing the thermal energy to the generation subsystem for generating power.

A thermoacoustic electric generator system includes: a thermoacoustic engine provided in an annular tube; a turbine provided in a branched tube and rotating when receiving acoustic energy, which is generated by thermoacoustic oscillation of working gas in the thermoacoustic engine; and a generator for converting kinetic energy, which is generated by rotation of the turbine, to electric energy. The turbine is provided at a specified position that belongs to a region between a first position and a second position in each region of the branched tube, the first position being an intermediate position between one end and the other end, and the second position being an intermediate position between the first position and the other end.

A thermoacoustic electric generator system includes: a turbine including a turbine blade provided in an inside of a branched tube in a tube component and rotating by thermoacoustic oscillation of working gas in a thermoacoustic engine, and a turbine rotational shaft configured to be coupled to the turbine blade, penetrate a tube wall of the branched tube, and extend from the inside to an outside thereof; and a generator provided on the outside of the branched tube in the tube component, coupled to the turbine rotational shaft of the turbine, and converting rotational energy of the turbine blade to electric energy.

Disclosed is an apparatus for generating electric energy from hot air dissipated by a system. The apparatus may comprise two chambers, a set of tubular arrangements, and an outlet port. The two chambers may comprise a first chamber and a second chamber. In one embodiment, the first chamber and the second chamber may comprise a first electrode and a second electrode respectively. The set of tubular arrangements may be mounted over the first electrode and the second electrode in a manner such that the hot air may be passed through a first end towards a second end of each tubular arrangement. The passing of the hot air may enable each tubular arrangement to contract in a manner such that second end of each tubular arrangement establishes a contact with the second electrode thereby completing an electric circuit to generate the electric energy.

Disclosed are oligomeric machines for energy harvesting having a first oligomeric module having a first end and a second end, a second oligomeric module having a first end and a second end, and at least one electric generating element. Exemplary oligomeric machines are configured to exhibits stochastic resonance and/or spontaneous vibrations and are configured such that in response to a prescribed amount of energy applied thereto, relative movement occurs between the first oligomeric module and the second oligomeric module in a manner causing the mechanical action of the second oligomeric module on the electric generating element to produce an electrical voltage and/or current.