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  2. Compressor stall - Wikipedia

    en.wikipedia.org/wiki/Compressor_stall

    Axi-symmetric stall, more commonly known as compressor surge; or pressure surge, is a complete breakdown in compression resulting in a reversal of flow and the violent expulsion of previously compressed air out through the engine intake, due to the compressor's inability to continue working against the already-compressed air behind it.

  3. Cryocooler - Wikipedia

    en.wikipedia.org/wiki/Cryocooler

    Fig.5 Schematic diagram of a GM-cooler. V l and V h are buffer volumes of the compressor. The compression heat is removed by the cooling water of the compressor via a heat exchanger. The rotary valves alternatingly connect the cooler to the high- and the low-pressure sides of the compressor and runs synchronous with the displacer.

  4. Auto-defrost - Wikipedia

    en.wikipedia.org/wiki/Auto-defrost

    In newer designs, the timer only runs while the compressor runs, so the longer the refrigerator door is closed, the less time the heater will run for and the more energy is saved. A defrost thermostat opens the heater circuit when the evaporator temperature rises above a preset temperature, 40°F (5°C) or more, thereby preventing excessive ...

  5. Condenser (heat transfer) - Wikipedia

    en.wikipedia.org/wiki/Condenser_(heat_transfer)

    The condensate drips down and collects at the bottom, often in a built-in pan called a hotwell. The shell side often operates at a vacuum or partial vacuum, produced by the difference in specific volume between the steam and condensate. Conversely, the vapor can be fed through the tubes with the coolant water or air flowing around the outside.

  6. Football analyst Kirk Herbstreit announces death of beloved ...

    www.aol.com/sports/football-analyst-kirk...

    The sports world had an unexpected loss this week, with football analyst Kirk Herbstreit announcing Thursday that his beloved dog Ben has died.

  7. A visual timeline of the New Year’s attack that left at least ...

    www.aol.com/visual-timeline-attack-left-least...

    By early Wednesday, Jabbar was walking the streets of New Orleans’ French Quarter between 1 a.m. and 2 a.m. and planting at least two improvised explosive devices, or IEDs, authorities have said ...

  8. Prepare for the coldest Arctic blast: How to keep your pipes ...

    www.aol.com/prepare-coldest-artic-blast-keep...

    Water expands when it freezes, Sperlich said, so people should drip indoor facets when temps dip below 32 degrees. Just make sure you drip the farthest faucet from your main valve. "You don't have ...

  9. Refrigeration - Wikipedia

    en.wikipedia.org/wiki/Refrigeration

    The Fridge Gate method is a theoretical application of using a single logic gate to drive a refrigerator in the most energy efficient way possible without violating the laws of thermodynamics. It operates on the fact that there are two energy states in which a particle can exist: the ground state and the excited state.