U V lamps that produce ozone, usually the high discharge type can be used to produce normal oxygen' i.e. note; when ozone is warmed it is known to revert back to normal oxygen; and so intern can be used to enrich combustion; example; cars lorry engines and for gas powered electricity production; a method called ozone seperation is encorperated using ozone lamps within a long pipe with extra holes in the upper surface area,this physically diplaces nitrogen and facilitates ozone diplacement as ozone is heavier than air, and thus then can be used for oxygen enrichment processes etc;