This document discusses solar radiation and collectors. It is a lecture on solar energy technology given by Dr. Swati Gangwar of the Department of Mechanical Engineering at Netaji Subhas University of Technology in New Delhi on January 13, 2023. The lecture covers types of solar radiations and advantages of concentrating solar collectors over non-concentrating collectors, including that concentrating collectors have lower heat losses, higher efficiency, a larger collector area than absorber area, ability to reach higher temperatures suitable for steam generation, lower heat insulation costs, and no need for anti-freeze protection of the absorber.

1. UNIT-1
SOLAR RADIATION AND COLLECTORS
BY
DR. SWATI GANGWAR
ASSISTANT PROFESSOR
DEPARTMENT OF MECHANICAL ENGINEERING
NETAJI SUBHAS UNIVERSITY OF TECHNOLOGY NEW DELHI
SOLAR ENERGY TECHNOLGY
(MEMEE10)
13-01-2023 Department of Mechanical Engineering, NSUT New Delhi 1

2. Course Content

16. Types Of Solar Radiations

42. Advantages of Concentrating Solar Collector
over Non Concentrating Solar Collector
• Heat losses are less
• Efficiency is high
• The collector area is more then the absorber area
• Hight temperature is obtained
• Suitable to generate steam
• Heat insulation cost is less
• No anti freeze protection is required to protect absorber