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Gas water heaters cost between $600 and $2,700 to replace, for an average cost of about $1,650. Electric water heaters cost between $600 and $3,500 to replace , for an average cost of about $2,100.
The contribution of the muscle to the specific heat of the body is approximately 47%, and the contribution of the fat and skin is approximately 24%. The specific heat of tissues range from ~0.7 kJ · kg−1 · °C−1 for tooth (enamel) to 4.2 kJ · kg−1 · °C−1 for eye (sclera). [13]
Apart from a thermal conductivity a boiler company also has an interface heat transfer coefficient Q and also some Kurganov has posted this simplification that water flowing in tubes has Q ≈ 500 - 1200 W/(m 2 K).
A US gallon of water weighs 8.3 pounds (3.8 kg). ... At $1 per therm, the cost of the gas would be about 40 cents. In comparison, a typical 230 L (60 US gal) tank ...
Per-kilogram prices of some synthetic radioisotopes range to trillions of dollars. ... per mass of element contained. This implicitly puts the value of compounds ...
The SI unit of volumetric heat capacity is joule per kelvin per cubic meter, J⋅K −1 ⋅m −3. The volumetric heat capacity can also be expressed as the specific heat capacity (heat capacity per unit of mass, in J⋅K −1 ⋅kg −1) times the density of the substance (in kg/L, or g/mL). [1] It is defined to serve as an intensive property.
The second is urea conversion: the slower endothermic decomposition of ammonium carbamate into urea and water: NH 4 CO 2 NH 2 ⇌ CO(NH 2) 2 + H 2 O (ΔH = +15.5 kJ/mol at 160–180 °C) [17] [71] The overall conversion of NH 3 and CO 2 to urea is exothermic, with the reaction heat from the first reaction driving the second. The conditions that ...
c p – specific heat capacity at constant pressure in kilojoules per kilogram-kelvin; γ – Thermal expansion coefficient as 10 −3 per kelvin; λ – Heat conductivity in milliwatts per meter-kelvin; η – Viscosity in micropascal-seconds (1 cP = 1000 μPa·s) σ – surface tension in millinewtons per meter (equivalent to dyn/cm)
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