A repeating pattern of swirling vortices caused by the unsteady separation of fluid flow around a blunt body. In industrial engineering, understanding this phenomenon is critical to preventing structural failure from vortex-induced vibrations in heat exchangers, stacks, and piping.
An international treaty to phase down the production and consumption of hydrofluorocarbons (HFCs), which are potent greenhouse gases. In thermal engineering, it drives the transition toward low-global-warming-potential (GWP) natural refrigerants and synthetic alternatives.
A standardized unit of energy representing the amount of energy released by burning 1,000 tonnes of crude oil, used to compare different energy sources on a common scale.
Physical restrictions placed on a system to limit its degrees of freedom or movement. In thermal design, they must be carefully engineered to allow necessary thermal expansion while securely holding components in alignment.
Precision mounting designs that constrain exactly the six degrees of freedom of a component without over-constraining it. This allows for thermal expansion and contraction without introducing distorting mechanical stresses or losing alignment.
Kinematic mounts are mechanical fixtures that constrain a component in exactly six degrees of freedom without over-constraint. They are crucial in thermal engineering because they permit free thermal expansion and contraction, preventing structural stress and misalignment during temperature swings.
A metric representing the amount of kinetic energy available per unit of cross-sectional area in a moving fluid flow, such as water or wind. It is crucial for assessing site viability and optimizing turbine rotor designs to achieve maximum energy conversion efficiency.
A phenomenon where gas transport behavior changes because the mean free path of gas molecules is greater than or equal to the pore diameter of the containing medium. This effect is leveraged in nanoporous industrial insulation to drastically reduce gas-phase thermal conduction.
Industrial facilities that chemically convert wood chips into wood pulp using sodium hydroxide and sodium sulfide. In thermal engineering, they represent highly energy-intensive systems with massive opportunities for waste heat recovery and combined heat and power integration.
A chemical pulping method that uses sodium hydroxide and sodium sulfide to break down lignin in wood fibers. It is the dominant industrial process for paper production, relying heavily on efficient chemical recovery to remain viable.
A Kármán vortex street is a repeating pattern of swirling vortices caused by the unsteady separation of fluid flow around a bluff body. It is critical in industrial engineering for mitigating structural fatigue from vortex-induced vibrations and for designing vortex-resonance energy harvesters.