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2. Water heat recycling - Wikipedia

   en.wikipedia.org/wiki/Water_heat_recycling

   Installation of a double-walled copper-on-copper heat exchanger in a vertical section of the master drain line in a Canadian home (2007) Water heat recycling (also known as drain water heat recovery, waste water heat recovery, greywater heat recovery, [citation needed] or sometimes shower water heat recovery [citation needed]) is the use of a heat exchanger to recover energy and reuse heat ...

3. Solar water heating - Wikipedia

   en.wikipedia.org/wiki/Solar_water_heating

   A Sun-facing collector heats a working fluid that passes into a storage system for later use. SWH are active (pumped) and passive (convection-driven). They use water only, or both water and a working fluid. They are heated directly or via light-concentrating mirrors. They operate independently or as hybrids with electric or gas heaters. [3]

4. Storage water heater - Wikipedia

   en.wikipedia.org/wiki/Storage_water_heater

   Solar heat is clean and renewable. This is the most modern system. Increasingly, solar powered water heaters are being used. Their solar thermal collectors are installed outside dwellings, typically on the roof or walls or nearby, and the potable hot water storage tank is typically a pre-existing or new conventional water heater, or a water heater specifically designed for solar thermal.

5. Water heating - Wikipedia

   en.wikipedia.org/wiki/Water_heating

   An ordinary electric shower often but not always has three heat settings: high (5.5 kW), low (2.5 kW), or cold (0 W) to use when a central heater system is available or in hot seasons. Higher power (up to 7.5 KW) and lower power (up to 3.2 KW) versions are also made, as well as versions with 4 heat settings or a variable heat setting.

6. The #1 High-Protein Snack for Better Heart Health, According ...

   www.aol.com/1-high-protein-snack-better...

   Then fruit and nuts provide fiber, heart-healthy fats and antioxidants—the perfect combo to give that heart of yours some TLC. A 7-ounce single-serve container of plain, low-fat Greek yogurt ...

7. Laura Kenny: Can elite sport damage women's fertility? - AOL

   www.aol.com/laura-kenny-elite-sport-damage...

   Laura Kenny speaks to James Gallagher for BBC Radio 4 [BBC] Most men and women benefit from exercising and losing excess weight before trying to conceive – this is known to boost fertility.