hi i am vishnu.i would like to get details on space station seminar emphasising on the chemical engineering part.i am from india.now iam doing my last year btech in chemical engineering.

Solar Power from Space (SSP) promises clean and everlasting energy supply for the growth of the mankind. With the state-ofart technologies yet developed, SSP is feasible but not economic. Key issues regarding SSP are launch cost, efficiency of solar cells, wireless power transmission, heavy investment, maintenance etc.

Yet proposed models suggest to place space segment in GEO, LEO or at lunar surface, which are either economically infeasible due to huge launch cost or require long setup time.

Next major breakthrough required is efficiency of solar cells, to reduce launching weight and size for SSP to be economic. Yet stateof- art solar cells have efficiencies only about 15%. Author proposes Metal-Metal junction cavity structure solar cell, which theoretically promises to increase solarelectric conversion efficiency many folds. Rest of the paper discusses fetter's analysis about economic feasibility of SSP, issues regarding microwave power transmission and influences of SSP on environment and existing life.