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  2. Logarithmic mean temperature difference - Wikipedia

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

    Q is the exchanged heat duty , U is the heat transfer coefficient (watts per kelvin per square meter), A is the exchange area. Note that estimating the heat transfer coefficient may be quite complicated. This holds both for cocurrent flow, where the streams enter from the same end, and for countercurrent flow, where they enter from different ends.

  3. Reflux - Wikipedia

    en.wikipedia.org/wiki/Reflux

    In a pot still, if the tube leading from the boiler to the condenser, the lyne arm, is angled upward, more liquid will have a chance to condense and flow back into the boiler leading to increased reflux. Typical results can increase production as high as 50% over the basic worm type condenser.

  4. Motor fuel taxes in Canada - Wikipedia

    en.wikipedia.org/wiki/Motor_fuel_taxes_in_Canada

    Provincial tax revenues usually go to fund road repair and construction, and additionally in some provinces a portion of revenues (for example, 2 cents/litre in Ontario) is also distributed directly to municipalities. [22]

  5. Condenser (heat transfer) - Wikipedia

    en.wikipedia.org/wiki/Condenser_(heat_transfer)

    A condenser is designed to transfer heat from a working fluid (e.g. water in a steam power plant) to a secondary fluid or the surrounding air. The condenser relies on the efficient heat transfer that occurs during phase changes, in this case during the condensation of a vapor into a liquid. The vapor typically enters the condenser at a ...

  6. Circulation evaporator - Wikipedia

    en.wikipedia.org/wiki/Circulation_evaporator

    Whilst the single effect design employs a condenser unit to stimulate a condensation action subsequent to vapour inflow from the heat exchanger, the double effect design does a similar duty however the extra component acts to reduce the overall pressure in the system.

  7. Today's Wordle Hint, Answer for #1273 on Friday, December 13 ...

    www.aol.com/todays-wordle-hint-answer-1273...

    If you’re stuck on today’s Wordle answer, we’re here to help—but beware of spoilers for Wordle 1273 ahead. Let's start with a few hints.

  8. Internally grooved copper tube - Wikipedia

    en.wikipedia.org/wiki/Internally_grooved_copper_tube

    To use smaller tubes instead of conventional-sized tubes in air conditioners, heat exchangers must be redesigned including the fin and tube circuits. [12] Design optimization requires the use of computational fluid dynamics to analyze airflow around the tubes and fins, as well as computer simulations of refrigerant flow and temperatures inside the tubes.

  9. Power plant efficiency - Wikipedia

    en.wikipedia.org/wiki/Power_plant_efficiency

    For other units, make sure to use a corresponding conversion factor for the units. For example, if using Btu/kWh, use a conversion factor of 3,412 Btu per kWh to calculate the efficiency factor. For example, if the heat rate is 10,500 Btu/kWh, the efficiency is 32.5% (since 3,412 Btu / 10,500 Btu = 32.5%).