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  2. Solar air conditioning - Wikipedia

    en.wikipedia.org/wiki/Solar_air_conditioning

    A deep well recirculates water to extract ambient earth temperature, typically at 8 litres (2 US gal) of water per metric ton per minute. These "open loop" systems were the most common in early systems, however water quality could cause damage to the coils in the heat pump and shorten the life of the equipment.

  3. Thermophotovoltaic energy conversion - Wikipedia

    en.wikipedia.org/wiki/Thermophotovoltaic_energy...

    Thermophotovoltaic (TPV) energy conversion is a direct conversion process from heat to electricity via photons.A basic thermophotovoltaic system consists of a hot object emitting thermal radiation and a photovoltaic cell similar to a solar cell but tuned to the spectrum being emitted from the hot object.

  4. Stand-alone power system - Wikipedia

    en.wikipedia.org/wiki/Stand-alone_power_system

    A typical stand-alone solar PV system at a sewage treatment plant in Santuari de Lluc, Spain. Stand-alone photovoltaic power systems are independent of the utility grid and may use solar panels only or may be used in conjunction with a diesel generator, a wind turbine or batteries. [1] [2]

  5. Photovoltaic system - Wikipedia

    en.wikipedia.org/wiki/Photovoltaic_system

    A photovoltaic system, also called a PV system or solar power system, is an electric power system designed to supply usable solar power by means of photovoltaics.It consists of an arrangement of several components, including solar panels to absorb and convert sunlight into electricity, a solar inverter to convert the output from direct to alternating current, as well as mounting, cabling, and ...

  6. Off-the-grid - Wikipedia

    en.wikipedia.org/wiki/Off-the-grid

    Off-the-grid or off-grid is a characteristic of buildings and a lifestyle [1] designed in an independent manner without reliance on one or more public utilities. The term "off-the-grid" traditionally refers to not being connected to the electrical grid , but can also include other utilities like water, gas, and sewer systems, and can scale from ...

  7. Solar combisystem - Wikipedia

    en.wikipedia.org/wiki/Solar_combisystem

    A solar combisystem provides both solar space heating and cooling as well as hot water from a common array of solar thermal collectors, usually backed up by an auxiliary non-solar heat source. Solar combisystems may range in size from those installed in individual properties to those serving several in a block heating scheme.