Abstract: An apparatus for producing ozone, comprising: a first electrode; a second, annular electrode surrounding the first electrode and spaced therefrom; a first tubular wall of electrically insulating material disposed between the electrodes; a first sealed glow discharge chamber surrounding one of the electrodes, formed at least in part by the tubular wall, and filled with a charge of an ionizable gas; an ozonization chamber disposed between the electrodes, formed at least in part by the tubular wall, and having an inlet for an oxygen charged medium and an outlet for the medium as ozone enriched; and, electrical conductors for connecting the electrodes to an electrical power source, whereby ionized gas in the glow discharge chamber forms a plasma electrode. The apparatus is preferably energized by applying an electrical potential between the electrodes in the form of voltage pulses at a frequency in the range of 10 to 60 KHz.

Abstract: The invention relates to a solar collector assembly comprising a hollow housing body that is at least partially transparent. An absorber means is contained in the housing and a vacuum pump means is connected to the housing. A particular process of operating the solar collector assembly also forms a part of this invention.Solar collector assemblies are used for converting sun energy into other forms of energy such as heat used to prepare hot water or heat for energy production. Many attempts have been made to design solar collectors having a compact structural shape and satisfactory efficiency to render them suitable as an energy source in dwelling houses. However, such a solar collector has not yet been attained.