Testing of Energy Efficient Fisonic Devices at the Woolworth Building in New York City

Abstract

The Fisonic Devices (FD)s are supersonic, condensing heat pumps with a patented internal geometry that causes steam and water to mix and accelerate, converting a minute fraction of fluid’s thermal energy to physical trust (pump head) with the outlet pressure higher than the pressure of the working medium at the inlet of the FD. The FD replaces the tube and shell heat exchanger and heats the water by direct contact with steam. The use of the FD allows reducing the terminal temperature difference between steam and water, the required steam consumption, and the amount of cold potable water required to quench the condensate. The operation of the Fisonic system results in reduction of building steam, cold water and sewer costs. The purpose of the described project was to manufacture, install, test, and demonstrate the performance and energy efficiency of the FD’s for the space heating system of the major City of New York steam consumer - Woolworth building. The test of FD’s resulted in reduction of the annual steam supply in comparison with the existing system by 20%, elimination of cold quench water consumption, and reduction of steam, water, and sewer costs.