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2. Thermal wheel - Wikipedia

   en.wikipedia.org/wiki/Thermal_Wheel

   Diagramatic operation of a thermal wheel Ljungström Air Preheater by Swedish engineer Fredrik Ljungström (1875–1964). A thermal wheel, also known as a rotary heat exchanger, or rotary air-to-air enthalpy wheel, energy recovery wheel, or heat recovery wheel, is a type of energy recovery heat exchanger positioned within the supply and exhaust air streams of air-handling units or rooftop ...

3. Patio heater - Wikipedia

   en.wikipedia.org/wiki/Patio_heater

   Other styles of outdoor patio heaters include: Wall-mounted patio heater: fixed to a wall or structure making for safe operation; Hanging patio heater: portable and small footprint; comes in electric only; Tabletop patio heater: ultra-portable and great for smaller groups or outdoor dining, but it uses a small propane tank

4. Infrared heater - Wikipedia

   en.wikipedia.org/wiki/Infrared_heater

   A heat lamp is an incandescent light bulb that is used for the principal purpose of creating heat. The spectrum of black-body radiation emitted by the lamp is shifted to produce more infrared light. Many heat lamps include a red filter to minimize the amount of visible light emitted. Heat lamps often include an internal reflector.

5. Your plants need help to survive this heat wave. Here's what ...

   www.aol.com/plants-help-survive-heat-wave...

   When to water outdoor plants (heat wave version) First, I would like to remind those of you who tend to fear the worst, that this weather is not out of the ordinary. Our part of the country falls ...

6. The right plants and some TLC can help your garden get ... - AOL

   www.aol.com/news/plants-tlc-help-garden-heat...

   With record-breaking heat striking many places across the country and around the world, my social media feeds are filling up with gardeners’ laments – and photos of their fallen annuals and ...

7. Grow light - Wikipedia

   en.wikipedia.org/wiki/Grow_light

   Ficus plant grown under a white LED grow light. A grow light is an electric light that can help plants grow. Grow lights either attempt to provide a light spectrum similar to that of the sun, or to provide a spectrum that is more tailored to the needs of the plants being cultivated (typically a varying combination of red and blue light, which generally appears pink to purple to the human eye).

8. List of appropriate technology applications - Wikipedia

   en.wikipedia.org/wiki/List_of_appropriate...

   Compact fluorescent lamps (as well as regular fluorescent lamps and LED-lightbulbs) can also be used as appropriate technology. Although they are less environmentally friendly than LED-lights, they are cheaper and still feature relative high efficiency (compared to incandescent lamps). The Safe bottle lamp is a safer kerosene lamp designed in ...

9. Lighting - Wikipedia

   en.wikipedia.org/wiki/Lighting

   Nearly any material can be used, so long as it can tolerate the excess heat and is in keeping with safety codes. An important property of light fixtures is the luminous efficacy or wall-plug efficiency, meaning the amount of usable light emanating from the fixture per used energy, usually measured in lumen per watt. A fixture using replaceable ...