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2. Photovoltaic mounting system - Wikipedia

   en.wikipedia.org/wiki/Photovoltaic_mounting_system

   PV panels mounted on roof Workers install residential rooftop solar panels. The solar array of a PV system can be mounted on rooftops, generally with a few inches gap and parallel to the surface of the roof. If the rooftop is horizontal, the array is mounted with each panel aligned at an angle.

3. Rooftop solar power - Wikipedia

   en.wikipedia.org/wiki/Rooftop_solar_power

   It is important that the rails are level enough for the panels to be evenly mounted. [13] Mounts attach the rails and the entire array to the surface of the roof. These mounts are often L brackets that are bolted through flashing and into the rafters of the roof. Mounts vary in design due to the wide range of roof configurations and materials. [12]

4. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   The first mini-split system was sold in 1961 by Toshiba in Japan, and the first wall-mounted mini-split air conditioner was sold in 1968 in Japan by Mitsubishi Electric, where small home sizes motivated their development. The Mitsubishi model was the first air conditioner with a cross-flow fan.

5. Solar air conditioning - Wikipedia

   en.wikipedia.org/wiki/Solar_air_conditioning

   Solar air conditioning, or "solar-powered air conditioning", refers to any air conditioning (cooling) system that uses solar power.. This can be done through passive solar design, solar thermal energy conversion, and photovoltaic conversion (sunlight to electricity).

6. Obesity Rates in the U.S. Drop for the First Time in a Decade ...

   www.aol.com/obesity-rates-u-drop-first-204508332...

   For the first time in a decade, rates of adult obesity in the United States have dropped, a new study has found.. The study followed nearly 17 million people, the majority of whom were in the 26 ...

7. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   All modern air conditioning systems, even small window package units, are equipped with internal air filters. [citation needed] These are generally of a lightweight gauze-like material, and must be replaced or washed as conditions warrant. For example, a building in a high dust environment, or a home with furry pets, will need to have the ...