упр.1. Solar energy.
Ответьте на вопросы:
- Is solar energy a single energy technology?
- Is solar energy a term that covers a diverse set of renewable energy technologies?
- What is the difference between solar energy and energy of oil, gas, coal, and present forms of nuclear power?
- Is solar energy inexhaustible?
- What main groups of solar energy do you know?
- Has the sun been used for heating for centuries?
- When did architects increasingly become familiar with passive solar techniques?
- What does a typical active solar-heating unit consist of?
- What are the main problems of solar heating and solar cooling systems?
- Do you think that solar cooling requires a higher technology installation?
- Is fluid heated to an intermediate in solar cooling systems and why?
- What is used in solar cooling to drive a refrigeration cycle?
- Do you think that a lot of commercial installations of solar heating and solar cooling have been made up to date?