P K ShahP. K. Shah Ph.D., in Mechanical Engineering, specially in solar and thermal engineering. He is presently working as Principal, Silver Oak College of Engineering and Technology, Ahmedabad. He has 38 years of teaching experience in various engineering olleges. He has, to his credit, presented several research papers in many National and International conferences. He is life member of Solar Energy Society of India. He has written number of articles in various magazines related to thermal engineering. Read More Read Less