A schematic representation of a thermoacoustic hot-air engine. The hot side of the heat exchanger is connected to hot heat reservoir – and the cold side to cold heat reservoir. The electro-acoustic transducer, e.g. a loudspeaker, is not shown.
Thermoacoustic engines (sometimes called "TA engines") are thermoacoustic devices which use high-amplitude sound waves to pump heat from one place to another (this requires work, which is provided by the loudspeaker) or use a heat difference to produce work in the form of sound waves (these waves can then be converted into electrical current the same way as a microphone does).
These devices can be designed to use either a standing wave or a travelling wave.
Compared to vapor refrigerators, thermoacoustic refrigerators have no coolant and few moving parts (only the loudspeaker), therefore require no dynamic sealing or lubrication.[1]
^Ceperley, P. (1979). "A pistonless Stirling engine – the travelling wave heat engine". J. Acoust. Soc. Am. 66 (5): 1508–1513. Bibcode:1979ASAJ...66.1508C. doi:10.1121/1.383505.
and 26 Related for: Thermoacoustic heat engine information
Thermoacousticengines (sometimes called "TA engines") are thermoacoustic devices which use high-amplitude sound waves to pump heat from one place to...
Thermoacoustics is the interaction between temperature, density and pressure variations of acoustic waves. Thermoacousticheatengines can readily be driven...
A heatengine is a system that converts heat to usable energy, particularly mechanical energy, which can then be used to do mechanical work. While originally...
combustion engine. Another group of noncombustive engines includes thermoacousticheatengines (sometimes called "TA engines") which are thermoacoustic devices...
This timeline of heatengine technology describes how heatengines have been known since antiquity but have been made into increasingly useful devices...
A Stirling engine is a heatengine that is operated by the cyclic expansion and contraction of air or other gas (the working fluid) by exposing it to...
water-source heat pump was installed in the Danish town of Esbjerg in 2023. A thermoacousticheat pump operates as a thermoacousticheatengine without refrigerant...
1945). p. 226. According to Lord Rayleigh's criterion for thermoacoustic processes, "If heat be given to the air at the moment of greatest condensation...
An internal combustion engine (ICE or IC engine) is a heatengine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion...
The aerospike engine is a type of rocket engine that maintains its aerodynamic efficiency across a wide range of altitudes. It belongs to the class of...
A rotating detonation engine (RDE) uses a form of pressure gain combustion, where one or more detonations continuously travel around an annular channel...
instance, thermoacoustic instabilities are a major hazard to gas turbines and rocket engines. Moreover, flame blowoff of an aero-gas-turbine engine in mid-flight...
engine compressors provide the compression part of the gas turbine engine thermodynamic cycle. There are three basic categories of gas turbine engine...
invisibility Digital scent technology Force field Plasma window Immersive virtual reality Magnetic refrigeration Phased-array optics Thermoacousticheatengine...
efficiency; a jet engine is a form of heatengine. Heatengine efficiency is determined by the ratio of temperatures reached in the engine to that exhausted...
occurs. The Rayleigh Criterion implies that thermoacoustic instability can be optimally controlled by having heat release oscillations 180 degrees out of...
The Scuderi engine, in 2005–2013 was a claimed new type of engine with claimed benefits. No engine to date has been produced commercially. In 2009 the...
airbreathing jet engine that is widely used in aircraft propulsion. The word "turbofan" is a combination of the preceding generation engine technology of...
A turboprop is a turbine engine that drives an aircraft propeller. A turboprop consists of an intake, reduction gearbox, compressor, combustor, turbine...
A ramjet is a form of airbreathing jet engine that requires forward motion of the engine to provide air for combustion. Ramjets work most efficiently...
A variable cycle engine (VCE), also referred to as adaptive cycle engine (ACE), is an aircraft jet engine that is designed to operate efficiently under...
The turbojet is an airbreathing jet engine which is typically used in aircraft. It consists of a gas turbine with a propelling nozzle. The gas turbine...
A rocket engine nozzle is a propelling nozzle (usually of the de Laval type) used in a rocket engine to expand and accelerate combustion products to high...
wave machines or pressure exchangers). As with all heatengines, the efficiency of a wave disk engine is governed by the temperature difference between...
Global Information