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A Flow Zone Unit is a term used by a Reservoir Engineer and is used in modelling the conditions in an oil reservoir. Flow units are defined with aim of better understanding reservoir unit flow behaviour and relation between porosity and permeability.
The company Cyclone Power Technologies of Pompano Beach, Florida was founded by inventor Harry Schoell to develop and market this engine. The Cyclone Mark V Engine is a six cylinder radial uniflow engine of two inch bore and two inch stroke. Pistons are single acting. The engine is claimed to produce 100 hp at 3,600 rpm using steam at 3,200 psi ...
Zone valves can also be constructed using wax motors and a spring-return mechanism. In this case, the valve is normally closed by the force of the spring but can be opened by the force of the wax motor. Removal of electrical power re-closes the valve. This style of zone valve operates with a perfectly ordinary SPST thermostat.
It is an offshoot of the development of the Cyclone Mark V Engine by the company Cyclone Power Technologies of Pompano Beach, Florida. The original versions were designed by inventor Harry Schoell, founder of Cyclone Power Technologies and the later versions have been designed by the Ohio State University Center for Automotive Research (OSU-CAR).
The ASh-62 was a development of the Wright R-1820 Cyclone that had been built in Russia under licence as the Shvetsov M-25, the main improvements including a two-speed supercharger and a more efficient induction system. Power was increased from the Cyclone's 775 hp to 1,000 hp.
The engine was produced under license by Kaiser-Frazer and later by AVCO Lycoming. [ 2 ] The engine was used in combat — the R-1300-1A and -1B in the A model North American T-28 Trojan and the R-1300-3, -3A, -3C and -3D in the Sikorsky H-19 Chickasaw .
Grumman was not happy with the performance, which led to the 2,000 hp Pratt & Whitney R-2800 engine replacing the R-2600 on F6F production models. [ 7 ] R-2600-15 - 1,800 hp (1,342 kW)- Planned to power the XB-33A, a prototype model of the B-33 Super Marauder (itself a high-altitude version of the B-26 Marauder ).
The components above, except the shaft, are linked by a parameter common to all of them, the flow rate of gas passing through the engine which is the same for all components at the same time (as a basic statement this is an acceptable approximation which ignores the addition of fuel in the combustor and bleeding air from the compressor). [4]