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2. Vaillant Group - Wikipedia

   en.wikipedia.org/wiki/Vaillant_Group

   The history of the Vaillant Group dates back to 1874, when Johann Vaillant set up a master fitter's business. In 1894 Johann Vaillant patented a new "closed-system" gas-fired bathroom boiler. [3] This was the first device that made it possible to heat water hygienically, without contaminating it with combustion gases.

3. Vaillant - Wikipedia

   en.wikipedia.org/wiki/Vaillant

   Vaillant may refer to: Vaillant (surname) Vaillant (automobile) Vaillant, Haute-Marne, a commune of the Haute-Marne department, France; Vaillant and Vaillant, le journal de Pif, children's magazines; Vaillant Group, a group of companies operating in the HVAC and Renewable Energy sectors; a ship sunk by an iceberg in 1897 with the loss of 78 lives

4. District heating - Wikipedia

   en.wikipedia.org/wiki/District_heating

   The Spittelau incineration plant is one of several plants that provide district heating in Vienna, Austria. Animated image showing how district heating works. District heating (also known as heat networks) is a system for distributing heat generated in a centralized location through a system of insulated pipes for residential and commercial heating requirements such as space heating and water ...

5. List of United States Navy installations - Wikipedia

   en.wikipedia.org/wiki/List_of_United_States_Navy...

   In January 2024, the US Navy requested a new permit for the installation and maintenance of mine training areas off the coasts of Hawaii and Southern California, as the Pacific Ocean, according to the command, is a priority theater of operations amid tensions with China. The current permit expires in 2025 and the Navy is required to submit an ...

6. Heating, ventilation, and air conditioning - Wikipedia

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

   Most modern hot water boiler heating systems have a circulator, which is a pump, to move hot water through the distribution system (as opposed to older gravity-fed systems). The heat can be transferred to the surrounding air using radiators, hot water coils (hydro-air), or other heat exchangers. The radiators may be mounted on walls or ...

7. François Levaillant - Wikipedia

   en.wikipedia.org/wiki/François_Levaillant

   François Levaillant (born Vaillant, later in life as Le Vaillant, "The Valiant") (6 August 1753 – 22 November 1824) was a French author, explorer, naturalist, zoological collector, travel writer, and noted ornithologist. He described many new species of birds based on birds he collected in Africa and several birds are named after him.