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Denis Papin FRS (French pronunciation: [dəni papɛ̃]; 22 August 1647 – 26 August 1713) [1] was a French physicist, mathematician and inventor, best known for his pioneering invention of the steam digester, the forerunner of the pressure cooker, the steam engine, [2] [3] the centrifugal pump, submersible and possibly the paddlesteamer (1707).
It has been claimed to be the first mainstream brand of blender, [1] though technically the Waring blender brand was introduced in 1937. In 1946, Oster acquired the Stevens Electric Company, which had received a patent on the liquifying blender in 1922. Oster itself was bought by Sunbeam Corporation in 1960.
Taking the English names as an example, the main manual (the bottom manual on two-manual instruments or the middle manual on three-manual instruments) is traditionally called the Great, and the upper manual is called the Swell. If there is a third manual, it is usually the Choir and is placed below the Great.
A pressure cooker. Pressure cooker – heats food quickly because the internal steam pressure from the boiling liquid causes saturated steam (or "wet steam") to bombard and permeate the food. Thus, higher temperature water vapour (i.e., increased energy), which transfers heat more rapidly compared to dry air, cooks food very quickly.
A thermal expansion valve is a key element to a heat pump; this is the cycle that makes air conditioning, or air cooling, possible.A basic refrigeration cycle consists of four major elements: a compressor, a condenser, a metering device and an evaporator.
An air handler, or air handling unit (often abbreviated to AHU), is a device used to regulate and circulate air as part of a heating, ventilating, and air-conditioning system. [1] An air handler is usually a large metal box containing a blower , furnace or A/C elements, filter racks or chambers, sound attenuators , and dampers . [ 2 ]
A pressure switch is a form of switch that operates an electrical contact when a certain set fluid pressure has been reached on its input. The switch may be designed to make contact either on pressure rise or on pressure fall. Pressure switches are widely used in industry to automatically supervise and control systems that use pressurized fluids.
Ruth Marianna Handler (née Mosko; November 4, 1916 – April 27, 2002) was an American business magnate and inventor. She is best known for inventing the Barbie doll in 1959 [ 2 ] and being co-founder of toy manufacturer Mattel with her husband Elliot , as well as serving as the company's first president from 1945 to 1975.