1.Professional experience in Teaching, Research, Administration, Co-ordination & Training. 2. Worked as Principal of Engineering Polytechnic college. 3. Self owned research & testing facility for Solar thermal & renewable heating projects. 4. Co-Inventor of Open Sun Cooling Test & intermediate temperature performance methods for rating and grading of different designs of solar cookers 5. Co-Inventor of thermal methods for determination of effective concentration ratio/factor for solar cookers