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A vacuum coffee maker. Industrial design-classic by Abram Games. A vacuum coffee maker brews coffee using two chambers where vapor pressure and gravity produce coffee.This type of coffee maker is also known as vac pot, siphon or syphon coffee maker, and was invented by Loeff of Berlin in the 1830s.
Siphon brewing relies on vapor pressure to raise water from a pressure chamber up to the brewing chamber where the coffee is infused. Once the heat source has been removed from the pressure chamber, the atmosphere within cools, lowering the pressure and drawing the coffee through a filter and back into the pressure chamber.
Soda siphons. As early as 1790, the concept of an "aerosol" was introduced in France, with self-pressurized carbonated beverages. [1] The modern siphon was created in 1829, when two Frenchmen patented a hollow corkscrew which could be inserted into a soda bottle and, by use of a valve, allowed a portion of the contents to be dispensed while maintaining the pressure on the inside of the bottle ...
Piston pumps can be made variable-displacement by inserting springs inline with the pistons. The displacement is not positively controlled, but decreases as back-pressure increases. Another variation is the variable-displacement vane pump, a type that has found usage in motor vehicle automatic transmissions, such as the General Motors Hydra-Matic.
A peristaltic pump, also commonly known as a roller pump, is a type of positive displacement pump used for pumping a variety of fluids. The fluid is contained in a flexible tube fitted inside a circular pump casing. Most peristaltic pumps work through rotary motion, though linear peristaltic pumps have also been made.
Hario Island (針尾島), is a large island located in the mouth of Ōmura Bay, part of the Nagasaki Prefecture, Japan. It is the 7th largest and 6th most populous island of the islands in Nagasaki Prefecture. The island, 33.16 km² in area, had 9767 inhabitants as of 2015. The island is dominated by the Citrus unshiu plantations.
The World Brewers Cup (WBC or WBrC) is an annual international coffee brewing competition organized by World Coffee Events, an organization founded by the Specialty Coffee Association.
A thermosiphon (or thermosyphon) is a device that employs a method of passive heat exchange based on natural convection, which circulates a fluid without the necessity of a mechanical pump. Thermosiphoning is used for circulation of liquids and volatile gases in heating and cooling applications such as heat pumps, water heaters, boilers and ...