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Solar intensity factors and applications

Short answer

Factors: latitude, season, time of day, sun's altitude, atmospheric clarity, altitude, surface tilt/orientation, sunshine duration, and albedo. Applications: solar thermal (water heating, cooking, drying, CSP), photovoltaic (lighting, pumping, grid), and passive building design.

List out different factors affecting the solar intensity and applications of solar energy.

Factors affecting solar intensity (radiation received at the surface)

  1. Latitude of the place: higher latitude gives lower intensity.
  2. Season and day of the year: earth–sun distance and the declination angle change the radiation.
  3. Time of the day / hour angle: highest at solar noon.
  4. Sun's altitude and zenith angle: the lower the sun, the longer the path through the atmosphere (air mass) and the lower the intensity.
  5. Atmospheric conditions: clouds, dust, humidity, smoke and aerosols absorb and scatter radiation.
  6. Altitude of the location: higher places have a thinner atmosphere and so more radiation (a benefit in the Himalayan regions of Nepal).
  7. Tilt and orientation of the receiving surface: a surface facing the sun at right angles receives most.
  8. Sunshine duration and shading by hills, buildings and trees.
  9. Ground reflection (albedo), for example snow.

Applications of solar energy

  • Thermal: solar water heaters, solar cookers, dryers for crops, space heating, solar stills for water distillation, and concentrated solar power (steam for electricity).
  • Photovoltaic: solar home systems, lighting, water pumping for irrigation and drinking water, telecom towers, grid-connected rooftop and utility plants, solar street lights, and small appliances.
  • Passive solar design of buildings.
  • Transport: solar vehicles and satellites (space).

✓ Answer checked by Claude Opus 5.5 (high effort)

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