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2. Self-regulating heater - Wikipedia

   en.wikipedia.org/wiki/Self-regulating_heater

   A positive-temperature-coefficient heating element (PTC heating element), or self-regulating heater, is an electrical resistance heater whose resistance increases significantly with temperature. The name self-regulating heater comes from the tendency of such heating elements to maintain a constant temperature when supplied by a given voltage.

3. Heating element - Wikipedia

   en.wikipedia.org/wiki/Heating_element

   A heating element is a device used for conversion of electric energy into heat, consisting of a heating resistor and accessories. [1] Heat is generated by the passage of electric current through a resistor through a process known as Joule heating .

4. Plate heat exchanger - Wikipedia

   en.wikipedia.org/wiki/Plate_heat_exchanger

   The small plate heat exchanger has made a great impact in domestic heating and hot-water. Larger commercial versions use gaskets between the plates, whereas smaller versions tend to be brazed. The concept behind a heat exchanger is the use of pipes or other containment vessels to heat or cool one fluid by transferring heat between it and ...

5. Heat pump and refrigeration cycle - Wikipedia

   en.wikipedia.org/wiki/Heat_pump_and...

   Thermodynamic heat pump cycles or refrigeration cycles are the conceptual and mathematical models for heat pump, air conditioning and refrigeration systems. [1] A heat pump is a mechanical system that transmits heat from one location (the "source") at a certain temperature to another location (the "sink" or "heat sink") at a higher temperature. [2]

6. This Is the 1 Step You Should Never Skip When Baking Cookies

   www.aol.com/1-step-never-skip-baking-143000518.html

   It’s the key to soft, chewy, and flavorful cookies.

7. Trump Is Banned From Separating Families—But Could Fight It

   www.aol.com/trump-banned-separating-families...

   The U.S. agreed in a settlement last year to an eight-year ban on Trump's family separation policy. A lead lawyer in the case is prepared in case Trump ignores the ban—or tries to nullify it.