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File:Osaka Municipal Subway 10 series EMU 021.JPG|Rooftop [[Condenser (heat transfer)|condenser]] unit fitted on top of an [[Osaka Municipal Subway 10 series]] [[Rapid transit|subway]] carriage. Air conditioning has become increasingly prevalent on [[public transport]] vehicles as a form of [[climate control]], and to ensure passenger comfort and drivers' [[occupational safety and health]].
File:Osaka Municipal Subway 10 series EMU 021.JPG|Rooftop [[Condenser (heat transfer)|condenser]] unit fitted on top of an [[Osaka Municipal Subway 10 series]] [[Rapid transit|subway]] carriage. Air conditioning has become increasingly prevalent on [[public transport]] vehicles as a form of [[climate control]], and to ensure passenger comfort and drivers' [[occupational safety and health]].
File:malqaf.svg|A pair of short [[windcatcher]]s ({{transl|ar|malqaf}}) used in traditional architecture; wind is forced down on the [[windward]] side and leaves on the [[leeward]] side (''cross-ventilation''). In the absence of wind, the circulation can be driven with evaporative cooling in the inlet (which is also designed to catch dust). In the center, a {{transl|ar|shuksheika}} ([[roof lantern]] vent), used to shade the [[qa'a (room)|qa'a]] below while allowing hot air rise out of it (''[[stack effect]]'').
File:malqaf.svg|A pair of short [[windcatcher]]s ({{transl|ar|malqaf}}) used in traditional architecture; wind is forced down on the [[windward]] side and leaves on the [[leeward]] side (''cross-ventilation''). In the absence of wind, the circulation can be driven with evaporative cooling in the inlet (which is also designed to catch dust).
File:Passive daytime radiative cooling diagram.jpg|Passive daytime radiative cooling (PDRC) surfaces are high in solar reflectance and heat emittance, cooling with zero energy use or pollution.
File:Passive daytime radiative cooling diagram.jpg|Passive daytime radiative cooling (PDRC) surfaces are high in solar reflectance and heat emittance, cooling with zero energy use or pollution.