摘要:
Free-standing boulders or rocks are fractured and broken down into many smaller pieces by impacting the boulder with a high velocity projectile. The impact energy is delivered to the rock by a blunt nosed projectile in a time which is less than the transit time of a sound signal across the average diameter of the rock.
摘要:
A method and system of temperature control of heavy hydrocarbons in a consist of rail cars is disclosed wherein waste heat from one or more of the locomotives propelling the train is utilized to heat the heavy hydrocarbons in a consist or ambient air is used to cool the heavy hydrocarbon cargo. The train is typically comprised of tanker cars that can be filled with raw heavy hydrocarbon, not dilbit thus allowing about 20% to about 30% additional heavy hydrocarbon to be transported in each tanker car. The system can keep the heavy hydrocarbon at a first, lower temperature en route and increase temperature to a second higher temperature as the train nears its terminus so that the tanker cars can be quickly emptied of their contents at the receiving terminal without the need to heat the tanker cars at the unloading terminal. The method disclosed herein for heating tanker cars in transit is to utilize waste heat from the locomotive diesel or gas turbine engines which is otherwise exhausted to the atmosphere.
摘要:
Embodiments of the present invention are directed to various aspects of imaging systems, including permeable and impermeable barriers separating liquid compartments, one of which contains the object to be imaged and the other an ultrasonic transducer, a fluidic bearing between a transducer carriage and guide supporting the carriage, a linear motor for the carriage, and a location sensing device for the carriage.
摘要:
The present invention is directed to an energy storage system comprised of a heat block having a relatively high specific energy capacity. The heat block can be used, for example, with a regenerative braking system for gas turbine powered vehicles to improve fuel efficiency.
摘要:
A device and method are disclosed for detecting and correcting unintended eye movements that may occur during an ultrasound scan by monitoring multiple position tracking sensors, examples being but not limited to ultrasound or optical position sensors. These position tracking sensors are in addition to the ultrasound imaging transducer and are in a fixed position on the scan head so as not to move during the scanning operation. These position tracking sensors can continuously monitor the distance to the cornea or other clearly defined anatomical features of the eye such as the posterior pigment layer of the iris during the movement of the scan head assembly and can provide continuous multi-dimensional correction for any unwanted motion of the eye relative to the scan head that may occur during the ultrasound scan.
摘要:
A method and apparatus are disclosed for a multi-spool gas turbine engine with a variable area turbine nozzle and a motor/alternator device on the highest pressure turbo-compressor spool for starting the gas turbine and power extraction during engine operation. During power down of the engine, the variable area turbine nozzle may be used in conjunction with power extraction to maintain a near constant combustor outlet temperature while controlling turbine inlet temperatures on the turbines downstream of the highest pressure turbine and controlling spool speed on the highest pressure turbine.
摘要:
A method and apparatus are disclosed for generating accurate and precise ultrasonic images of biological materials or animate objects, such as the cornea and lens of the eye, and, in particular, to an ultrasonic scanning apparatus that can position its virtual center of curvature such that its ultrasonic transducer will emit pulses that reflect substantially perpendicularly from a curved specular surface of interest within the eye. This invention can allow real time imaging of a lens as it accommodates and can better enable researchers and ophthalmic surgeons to develop, fit, implant and diagnose performance of accommodative lenses.
摘要:
A closed-loop organic Rankine cycle apparatus to extract waste heat from the exhaust gas from a gas turbine engine is disclosed wherein the closed loop includes at least one additional heat exchanger. An additional heat exchanger for heating fuel may be in one of three locations relative to the ORC turbine and condensing heat exchanger. One location is a preferred location for adding heat to all fuels (liquid, gaseous and/or cryogenic). Another location is a practical location for adding heat to very cold or cryogenic fuels such as CNG or LNG. The closed-loop organic Rankine cycle apparatus, besides extracting waste heat from the exhaust gases, may also include an additional heat exchanger to recover heat from a compressor on a gas turbine engine prior to entering an intercooler on a gas turbine engine.In another embodiment, the exhaust stream can be directed, in selected proportions, to a closed organic Rankine cycle, a heat exchanger for pre-heating fuel or directly out an exhaust stack.
摘要:
The present invention is directed to a maritime vessel that uses a solid or semi-solid material to enclose substantially natural gas storage vessels in the hold of the vessel.
摘要:
The present invention is directed to a small charge blasting system that provides a relief volume for a pressurized working fluid in the bore of a barrel that is inserted into a hole in the material to be broken, an end cap on the barrel to inhibit the entry of water and detritus into the bore, a stepped downhole end of the barrel to pressurize both the sidewall and bottom of the hole, and/or a thin barrel wall that flexes outwardly in response to pressure exerted on the wall by the pressurized working fluid to provide improved sealing of the fluid in the bottom of the hole.