A plate heat exchanger is a type of heat exchanger that uses metal plates to transfer heat between two fluids. This has a major advantage over a conventional heat exchanger in that the fluids are exposed to a much larger surface area because the fluids spread out over the plates. This facilitates the transfer of heat, and greatly increases the speed of the temperature change. Plate heat exchangers are now common and very small brazed versions are used in the hot-water sections of millions of combination boilers. The high heat transfer efficiency for such a small physical size has increased the domestic hot water (DHW) flowrate of combination boilers. The small plate heat exchanger has made a great impact in domestic heating and hot-water. Larger commercial versions use gaskets between the plates, smaller version tend to be brazed.
The concept behind a heat exchanger is the use of pipes or other containment vessels to heat or cool one fluid by transferring heat between it and another fluid. In most cases, the exchanger consists of a coiled pipe containing one fluid that passes through a chamber containing another fluid. The walls of the pipe are usually made of metal, or another substance with a high thermal conductivity, to facilitate the interchange, whereas the outer casing of the larger chamber is made of a plastic or coated with thermal insulation, to discourage heat from escaping from the exchanger.
The plate heat exchanger (PHE) was invented by Dr Richard Seligman in 1923 and revolutionised methods of indirect heating and cooling of fluids. Dr Richard Seligman founded APV in 1910 as the Aluminium Plant & Vessel Company Limited, a specialist fabricating firm supplying welded vessels to the brewery and vegetable oil trades.
Other articles related to "heat exchanger, heat, plate heat exchanger, plates, plate, plate heat exchangers":
... A heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another ... The classic example of a heat exchanger is found in an internal combustion engine in which a circulating fluid known as engine coolant flows through radiator coils and air flows past the coils, which cools ...
... Another type of heat exchanger is the plate heat exchanger ... One is composed of multiple, thin, slightly separated plates that have very large surface areas and fluid flow passages for heat transfer ... This stacked-plate arrangement can be more effective, in a given space, than the shell and tube heat exchanger ...
... Plate fin heat exchanger Heat transfer LMTD. ...
... In modern breweries this is achieved through a plate heat exchanger ... A plate heat exchanger has many ridged plates, which form two separate paths ... The wort is pumped into the heat exchanger, and goes through every other gap between the plates ...
... Fixed plate heat exchangers have no moving parts ... Plates consist of alternating layers of plates that are separated and sealed ... Typical flow is cross current and since the majority of plates are solid and non permeable, sensible only transfer is the result ...
Famous quotes containing the words exchanger, plate and/or heat:
“I want to know whether you are a person devoted to creating or to exchanging in some respect or other: as a creator you belong to the free, as an exchanger you are their slave and instrument.”
—Friedrich Nietzsche (18441900)
“Say Yessum to the ladies, an Yessur to the men,
And when theys company, dont pass yer plate for pie again;
But, thinkin of the things yerd like to see upon that tree,
Jes fore Christmas be as good as yer kin be!”
—Eugene Field (18501895)
“To say nothing is out here is incorrect; to say the desert is stingy with everything except space and light, stone and earth is closer to the truth.”
—William Least Heat Moon [William Trogdon] (b. 1939)