EHFE – technology application area
Picture 1 illustrates "the classical" concept of well-known steam power plants, the colors on the chart show the change in temperature of the working fluid. This scheme is a closed loop, where the working fluid consumption as a vapor is compensated by the working liquid supply from the feed pump. The pump, while pumping condensate, overcomes the operating pressure, over few 100 Atm. It is a great pressure, and to overcome this pressure, a sophisticated multi-circuit feed pumps (schemes) are often used. Most importantly, the power cost of rotation of these pumps is up to 20% and depends not only on the result of normal use and aging, or type of the feed pump, but also on the type of working fluid. For example, in recent years a low-boiling working fluid is widely used to implement the ORC (Organic Rankine Cycles), where the generation of 1 kW of power requires much more of the working fluid flow in comparison with "water" Rankine cycle, which dramatically increases the power costs of the feed pumps rotation.
EHFE - technology eliminates the necessity for a feed pump with a consumed capacity costs on their rotation, thus it creates conditions for heat transfer efficiency rise, and it is applicable in steam power plants especially while operating ORC - modes, as well as for the local power systems (private energy, private house, on the street, in block of flats, on the enterprise, etc.)