Abstract:
The systems and methods described herein integrate a supercritical fluid power generation system with a LNG production/NGL separation system. A heat exchanger thermally couples the supercritical fluid power generation system with the LNG production/NGL separation system. A relatively cool heat transfer medium, such as carbon dioxide, passes through the heat exchanger and cools a first portion of extracted natural gas. The relatively warm heat transfer medium returns to the supercritical fluid power generation system where a compressor and a thermal input device, such as a combustor, are used to increase the pressure and temperature of the heat transfer medium above its critical point to provide a supercritical heat transfer medium. A second portion of the extracted natural gas may be used as fuel for the thermal input device.
Abstract:
An Organic Rankine Cycle (ORC) device and method for transforming heat from a heat source into mechanical energy. The ORC includes a closed circuit containing a two phase working fluid. The circuit comprises a liquid pump for circulating the working fluid consecutively through an evaporator which is configured to be placed in thermal contact with the heat source; through an expander for transforming the thermal energy of the working fluid into mechanical energy; and through a condenser which is in thermal contact with a cooling element. The expander is situated above the evaporator. The fluid outlet of the evaporator is connected to the fluid inlet of the expander by a raiser column which is filled with a mixture of liquid working fluid and of gaseous bubbles of the working fluid, which mixture is supplied to the expander.
Abstract:
An engine preheating apparatus includes a waste heat recovery unit for recovering waste heat within a vehicle, and an air cooler connected to the waste heat recovery unit for receiving waste heat from the waste heat recovery unit, wherein an intake pipe in which intake air flows is connected to the air cooler in a communicating manner.
Abstract:
A method for operating a condenser, wherein the condenser is designed for condensing water vapor to form water and during operation a condensate having water accumulates in the condenser, wherein on the condensate surface a plurality of floating bodies are arranged on the condensate, wherein the floating bodies float on the condensate, wherein a large number of floating bodies are used in such a way that the condensate surface is covered, wherein the floating bodies are of spherical and/or sphere-like design, and wherein floating bodies with different sizes are used.
Abstract:
The present invention relates to a working fluid for a steam-turbine cycle process, said fluid comprising a working medium, a lubricant and preferably an emulsifier. The working medium is a C1 to C4 alcohol and/or a C3 to C5 ketone, optionally mixed with water. The invention also relates to a device for a steam cycle process, which device contains the working fluid, and to the use of the working fluid in an organic Rankine cycle. The lubricant is a hydrocarbon and the emulsifier is a surface-active substance.
Abstract:
An improved heat engine is disclosed. The heat engine comprises at least one heat pipe containing a working fluid flowing in a thermal cycle between vapor phase at an evaporator end and liquid phase at a condenser end. Heat pipe configurations for high-efficiency/high-performance heat engines are disclosed. The heat pipe may have an improved capillary structure configuration with characteristic pore sizes between 1μ and 1 nm (e.g. formed through nano- or micro-fabrication techniques) and a continuous or stepwise gradient in pore size along the capillary flow direction. The heat engine may have an improved generator assembly configuration that comprises an expander (e.g. rotary/turbine or reciprocating piston machine) and generator along with magnetic bearings, magnetic couplings and/or magnetic gearing. The expander-generator may be wholly or partially sealed within the heat pipe. A heat engine system (e.g. individual heat engine or array of heat engines in series and/or in parallel) for conversion of thermal energy to useful work (including heat engines operating from a common heat source) is also disclosed. The system can be installed in a vehicle or facility to generate electricity.
Abstract:
In a thermal engine for producing an electrical current or mechanical output by actuating a piston by gas under pressure in a cylinder chamber of the thermal engine, wherein heat is applied to the gas compressed in the cylinder by injecting or spraying a heat transfer medium in the form of a hot liquid or hot condensable gas into the cylinder chamber from which the used heat transfer medium is then collected in a base region of the cylinder chamber and is drained into a collection chamber.
Abstract:
The present disclosure relates to a multi-pressure stage, organic Rankine cycle (“ORC”) that includes a dry organic working fluid that flows through a high pressure stage and a low pressure stage. In one embodiment, a high pressure evaporator and a low pressure evaporator may be arranged in series. In other embodiments, the evaporators may be arranged in parallel.
Abstract:
A heat engine is provided which includes: a boiler unit including an evaporation chamber and a fluid-pool chamber, the evaporation chamber heating a working fluid by supplied heat and generating vapor of the fluid, and the fluid-pool chamber collecting the fluid supplied to the evaporation chamber; an output unit through which the vapor flows, and which converts energy of the vapor to mechanical energy; a condensation unit which condenses the vapor that has passed through the output unit, and refluxes the condensed fluid to the fluid-pool chamber; and a working fluid guide member which is disposed in the boiler unit, and which sucks the fluid in the fluid-pool chamber by using capillary force and supplies the fluid to the evaporation chamber. The evaporation chamber is separated from the fluid-pool chamber. Pressure in the evaporation chamber is higher than pressure in the fluid-pool chamber. The working fluid guide member satisfies (2σ/r)·cos θ>PH−PL.
Abstract:
Methods and systems relate to an oxy-boiler used to generate steam injected into a well for assisting recovery of hydrocarbons. Operating conditions of a burner for the oxy-boiler limits oxygen contamination in a resulting flue gas for carbon dioxide recovery and limits size of the oxy-boiler, which may thus be located proximate the well rather at a central processing facility. In contrast to a direct steam generation approach where resulting carbon dioxide is mixed with steam, the oxy-boiler also enables selection of a desired level of carbon dioxide injection, which may be provided with the flue gas that may be exhausted from the oxy-boiler at an injection pressure.