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  2. Moen Incorporated - Wikipedia

    en.wikipedia.org/wiki/Moen_Incorporated

    The M-CORE uses the new 1213 cartridge. With the introduction of M-CORE, Moen will be retiring the Moentrol series of valves, however, valve trim for existing Moentrol valves will continue to be available. [3] Like Moentrol, M-CORE includes a separate water volume control feature. Some Moen products are manufactured in China. [4]

  3. Thermogalvanic cell - Wikipedia

    en.wikipedia.org/wiki/Thermogalvanic_cell

    As long as there is a difference in temperature between the electrodes a current will flow through the circuit. A thermogalvanic cell can be seen as analogous to a concentration cell but instead of running on differences in the concentration/pressure of the reactants they make use of differences in the "concentrations" of thermal energy.

  4. Thermopile - Wikipedia

    en.wikipedia.org/wiki/Thermopile

    Thermopile, composed of multiple thermocouples in series. If both the right and left junctions are the same temperature, voltages cancel out to zero. However, if there is a temperature difference between sides the resulting total output voltage is equal to the sum of junction voltage differentials.

  5. NTU method - Wikipedia

    en.wikipedia.org/wiki/NTU_Method

    The other fluid would change temperature more slowly along the heat exchanger length. The method, at this point, is concerned only with the fluid undergoing the maximum temperature change. The effectiveness of the heat exchanger ( ϵ {\displaystyle \epsilon } ) , is the ratio between the actual heat transfer rate and the maximum possible heat ...

  6. Thermoelectric materials - Wikipedia

    en.wikipedia.org/wiki/Thermoelectric_materials

    The efficiency of a thermoelectric device for electricity generation is given by , defined as =.. The maximum efficiency of a thermoelectric device is typically described in terms of its device figure of merit where the maximum device efficiency is approximately given by [7] = + ¯ + ¯ +, where is the fixed temperature at the hot junction, is the fixed temperature at the surface being cooled ...

  7. Logarithmic mean temperature difference - Wikipedia

    en.wikipedia.org/wiki/Logarithmic_mean...

    In thermal engineering, the logarithmic mean temperature difference (LMTD) is used to determine the temperature driving force for heat transfer in flow systems, most notably in heat exchangers. The LMTD is a logarithmic average of the temperature difference between the hot and cold feeds at each end of the double pipe exchanger.

  8. Isothermal titration calorimetry - Wikipedia

    en.wikipedia.org/wiki/Isothermal_Titration...

    This causes the feedback power to the sample cell to be decreased (remember: a reference power is applied to the reference cell) in order to maintain an equal temperature between the two cells. In an endothermic reaction, the opposite occurs; the feedback circuit increases the power in order to maintain a constant temperature (isothermal ...

  9. Thermoelectric generator - Wikipedia

    en.wikipedia.org/wiki/Thermoelectric_generator

    The typical efficiency of TEGs is around 5–8%, although it can be higher. Older devices used bimetallic junctions and were bulky. More recent devices use highly doped semiconductors made from bismuth telluride (Bi 2 Te 3), lead telluride (PbTe), [10] calcium manganese oxide (Ca 2 Mn 3 O 8), [11] [12] or combinations thereof, [13] depending on application temperature.

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