Organic Rankine Cycle Terminology

Binary Cycle: A geothermal power plant that allows cooler geothermal reservoirs to be used with dry steam or flash steam plants.


Carefree® Integrated Power Module (IPM): Core of the Thermapower® and Hydrocurrent™ systems, which consists of a high-speed turbine expander and high-efficiency generator supported by frictionless magnetic bearings and enclosed in a hermetically sealed housing.


Closed-Loop System: The process of waste or liquid being treated and returned for reuse (recycled).


Condenser: A mechanism that condenses vapor into liquid.


Coproduction: Recovering heat from brine and gas produced by oil and gas wells.


Energy Recovery: the process of converting non-recyclable waste into accessible heat, electricity or fuel.


Evaporator: An apparatus used to turn liquid chemicals into their gas form, which is evaporated or vaporized into a gas.


Extra Low Temperature: The 125 XLT optimal heat source temperature is 95.6⁰C (204⁰F).  


Geothermal Power: Recovering heat from hot springs and brine produced by geothermal drilling to produce electricity.  A geothermal Organic Rankine Cycle system is often used to convert the heat into power.


Heat Exchanger: An instrument that transfers heat from one medium to another.  


Hermetically Sealed Unit: The outer packaging used to maintain a seal against the flow of gases, liquids or chemicals.


Medium Temperature: The 125 MT optimal heat source temperature is 135⁰C (275⁰F).


Organic Rankine Cycle (ORC): Is a heat recovery process that converts thermal energy into mechanical power.


Renewable Energy: Energy from an inexhaustible source, such as wind or solar power.


Solar Thermal Power: Using energy from the sun to generate thermal energy.


Thermodynamic cycle: A sequence of thermodynamic processes that involve transfer of heat and work into and out of the system.


Turboexpander: Centrifugal or axial flow turbine through which a high pressure gas is expanded to produce work.


Utility interconnection: Connection to public utility electrical grid.


Waste Heat Recovery: Converting wasted heat into useable electric power.  


Working Fluid-   A fluid, such as R245Fa, that has a particular set of physical properties essential for the operation of a thermodynamic cycle.