Question

short answers onlyy what are the types of renewable energy?
Explain the process of passive solar energy ?
how do wind farms work?
how are biomass fuels created?

Answer 1

1) Types of renewable energy:
- Solar (passive & active/PV), wind, hydro (large & small), geothermal, biomass/bioenergy, tidal & wave (marine), and sometimes hydrogen (green H2).

2) Passive solar energy (process):
- Orient and design a building to maximize sun exposure, use glazing to admit sunlight, store heat in thermal mass (concrete, stone), distribute heat by conduction/convection/radiation, and control with insulation, shading and ventilation — all without mechanical systems.

3) How wind farms work:
- Wind turns turbine blades → rotor spins generator (direct-drive or via gearbox) → electricity produced → stepped-up by transformers → fed to the grid; turbines are spaced and oriented to capture prevailing winds and use yaw/control systems for efficiency.

4) How biomass fuels are created:
- Collect organic feedstock (wood, crop residues, waste); convert by:
- Direct combustion or pellets for heat,
- Anaerobic digestion → biogas (methane),
- Fermentation → bioethanol,
- Transesterification → biodiesel,
- Pyrolysis/gasification → bio-oil or syngas.