Passive solar water heaters don't have pumps ... for some of the finer control of active systems. Integral collector-storage systems heat water through a transparent cover on a storage tank ...

Passive solar techniques include orienting a building ... Solar water heating is the conversion of sunlight into heat for water heating using a solar thermal collector. Growing interest in solar ...

There are two main types of systems: active and passive. Both use solar collectors — tubes, flat plates, or other types, which are designed to trap heat from the sun — and storage tanks ...

Another technique uses moveable mirrors to focus the sun's rays on a collector tower ... the receiver is heated to run a generator. Other solar technologies are passive. For example, big windows ...