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  2. Equivalence of direct radiation - Wikipedia

    en.wikipedia.org/wiki/Equivalence_of_direct...

    Equivalence of direct radiation (EDR) is a standardized comparison method for estimating the output ability of space-heating radiators and convectors.. Measured in square feet, the reference standard for EDR is the mattress radiator [1] invented by Stephen J. Gold in the mid 19th century.

  3. Liquid droplet radiator - Wikipedia

    en.wikipedia.org/wiki/Liquid_Droplet_Radiator

    High-temperature radiators are preferred for better efficiency and size reduction considerations, however, fluid property and droplet cloud property are additional factors. Droplet size formation and droplet density govern emission and reabsorption. A smaller droplet is essential for obtaining effective radiation in the liquid droplet radiator.

  4. Radiator (engine cooling) - Wikipedia

    en.wikipedia.org/wiki/Radiator_(engine_cooling)

    Other factors influence the temperature of the engine, including radiator size and the type of radiator fan. The size of the radiator (and thus its cooling capacity) is chosen such that it can keep the engine at the design temperature under the most extreme conditions a vehicle is likely to encounter (such as climbing a mountain whilst fully ...

  5. A Comprehensive Guide to RV Values and Trade-ins - AOL

    www.aol.com/comprehensive-guide-rv-values-trade...

    While there’s not a go-to RV depreciation calculator available online, some experts suggest that an RV loses about 20% of its value after the first year, a rate that slows significantly after that.

  6. Radiator - Wikipedia

    en.wikipedia.org/wiki/Radiator

    The Roman hypocaust is an early example of a type of radiator for building space heating. Franz San Galli, a Prussian-born Russian businessman living in St. Petersburg, is credited with inventing the heating radiator around 1855, [1] [2] having received a radiator patent in 1857, [3] but American Joseph Nason developed a primitive radiator in 1841 [4] and received a number of U.S. patents for ...

  7. Thermal mass - Wikipedia

    en.wikipedia.org/wiki/Thermal_mass

    The equation relating thermal energy to thermal mass is: = where Q is the thermal energy transferred, C th is the thermal mass of the body, and ΔT is the change in temperature.

  8. How to finance a recreational vehicle: RV loans, alternatives ...

    www.aol.com/finance/how-to-finance-rv-182200533.html

    The average cost of renting an RV in 2024 is $183 a night, according to Go RV Rentals, though it depends on the type of RV. A pop-up camper can go for as little as $89 a night, while a Class A ...

  9. Vapor-compression refrigeration - Wikipedia

    en.wikipedia.org/wiki/Vapor-compression...

    A representative pressure–volume diagram for a refrigeration cycle. Vapour-compression refrigeration or vapor-compression refrigeration system (VCRS), [1] in which the refrigerant undergoes phase changes, is one of the many refrigeration cycles and is the most widely used method for air conditioning of buildings and automobiles.