Sentences with phrase «heat of vaporization of»

We've added sufficient IR to heat the surface layer to 100 C, but now all the heat of vaporization of that surface layer comes from the layer below which is colder?

Think about the difference in magnitude between the heat of vaporization of water and the heat capacity of air.

«C, but now all the heat of vaporization of that surface layer comes from the layer below which is colder?

using temps of 288 and 289 degK; dH (heat of vaporization of water) of 45,000 J / mole (10 % higher than at 100 degC) and R = 8.31 J / mol / degK; P1 and P2 are the partial pressures of water vapor.

This can be done as follows using only the ideal gas law, the heat of vaporization of water, and the specific heat of air.

The latent heat of vaporization of water being 2260 J / g, condensation of 0.3 g releases 0.3 * 2260 = 678 joules.

After all, it isn't just dry air that carries up the heat — a lot of energy gets lofted up in the form of latent heat of vaporization of water, for example.

There is a rather large amount of energy missing from the Earth Energy Budget that is likely due to the rather large difference in the latent heat of vaporization of sea water with varying salt content.

They include the ones that matter: latent heat of vaporization of water, heat of fusion of ice, etc..

As to the absorption of long - wave radiation from the earth's surface, while it may be true that carbon dioxide and water together do absorb certain frequency ranges of that radiation, I don't think that that matters a whole lot because most of the heat from the surface is transported to the top of the troposphere by conduction, convection and latent heat of vaporization of water during the day.

They use a simplifying assumption that the latent heat of vaporization of water is a constant, independent of temperature.

The latent heat of vaporization of water is 2270 J / kg.

The heat of vaporization of the water is largely wasted.

More to explore Just Keep Cool — How Evaporation Affects Heating and Cooling, from Science Buddies Specific Heat, Heat of Vaporization and Density of Water, from Khan Academy Perspiration Cooling of Body, from HyperPhysics Heat of Vaporization of Water and Ethanol, from Khan Academy Science Activities for All Ages!

Not exact matches

Boiling is the rapid vaporization of a liquid, which typically occurs when a liquid is heated to a temperature such that its vapor pressure is above that of the surroundings, such as air pressure.

The primary limit to the pressure of a vapor in equilibrium with a liquid (or solid) at a given T is governed by the Clausius - Clapeyron equation; the vapor pressure is a rapidly increasing function of temperature, and the T dependence is determined by the magnitude of the latent heat of vaporization.

Higher compression and thermal efficiency along with injection timing of fuel and vaporization of fuel through injection system and not by heated surface is what distinguishes Diesel's patent of 3,500 kilopascals (508 psi).

The net effect of the increased vaporization (with the increased transport of heat from surface to upper troposphere, where the vapor condenses and freezes) is not known.

In the case of paleoclimate, obviously «vaporization» rates and convective heat fluxes changed, too.

When particles are dispersed in water at ambient temperature, energy is directed primarily to vaporization of water into steam, with a much smaller fraction resulting in heating of the fluid.

The surface heat capacity C (j = 0) was set to the equivalent of a global layer of water 50 m deep (which would be a layer ~ 70 m thick over the oceans) plus 70 % of the atmosphere, the latent heat of vaporization corresponding to a 20 % increase in water vapor per 3 K warming (linearized for current conditions), and a little land surface; expressed as W * yr per m ^ 2 * K (a convenient unit), I got about 7.093.

All other physical heat transfer mechanisms, conduction, latent heat of vaporization and radiation transfer heat out of the ocean.

The thermodynamics of water are simplified in that only the vapor - liquid phase transition is taken into account, and the latent heat of vaporization is taken to be constant, as in Frierson et al. (2006).

Movement of water vapor, and its associated latent heat of vaporization, is also responsible for about 50 % of the transport of heat from the tropics to the poles.

This does heat the surroundings if they are lower than the vaporization temperature of water!

It's carried aloft in latent heat of vaporization and released when it condenses into a cloud.

For a liquid - gas transition, L -LCB- \ displaystyle L -RCB- is the specific latent heat (or specific enthalpy) of vaporization; for a solid - gas transition, L -LCB- \ displaystyle L -RCB- is the specific latent heat of sublimation.

the latent heat of vaporization means dry air at 20C has less energy that air at 85 % humidity.

Once this altitude is reached, the continued return of the heat of vaporization to the atmosphere will buoy the column up to ever - greater heights until it runs dry.

where Cp is the specific heat of air at constant pressure, T is the air temperature, L is the latent heat of vaporization, and q is the specific humidity [Haltiner and Williams, 1980].

A thunderstorm event might be best depicted as a run - away rising column of air that is becoming progressively warmer than the surrounding air as condensing water vapor yields its heat of vaporization until almost all water vapor has condensed out and then cooling at a rate of 9.8 deg C per 1000 meters, it eventually reaches a warmer layer of air and spreads out like smoke over a ceiling.

Liquid density (1.013 bar at boiling point): 808.607 kg / m3 Liquid / gas equivalent (1.013 bar and 15 °C (59 °F)-RRB-: 691 vol / vol Boiling point (1.013 bar): -195.9 °C Latent heat of vaporization (1.013 bar at boiling point): 198.38 kJ / kg» http://encyclopedia.airliquide.com/Encyclopedia.asp?GasID=5

@Web: The problem with your argument is that it presumes that there is not a statistical distribution of kinetic energies among the top-most water molecules, such that a certain percentage of them are within a single photon's energy of the heat of vaporization.

An individual molecule can only directly vaporize from an absorbed photon if that photon possesses enough energy to transfer to the molecule so that it can overcome the heat of vaporization barrier.

After finding that models use a wrong value for a latent heat of water vaporization, I believe: 1.

The infrared photons that dominate the downwelling spectrum are all individually less energetic than the heat of vaporization required.

or energy including the latent heat of vaporization.

Or how would a probability distribution be affected by using a correct formula for a latent heat of water vaporization?

Latent heat of vaporization at the surface, especially over the oceans, carries a tremendous and not easily quantifiable amount of energy straight through the CO2 like it wasn't there and releases it much higher up where the path out the door to space has much less resistance compared to ground level.

One in which heat is expressed in temperature — OR is stored as heat of fusion, latent heat, heat of vaporization, heat capacity and conduction into the ground and water.

Given that evaporation and precipitation must be nearly equal (in a steady state) we can see that P ∼ I / Lv, where Lv (J mol − 1) is the heat of vaporization.

If one assumes that the rate of energy loss stays the same (generally safe assumption) then instead of just changing temperature, the heat of fusion or vaporization of water vapor also needs to be considered.

Wet heat (water vapor) that rises is particularly efficient as it carries the latent heat of vaporization in addition to «just» the enthalpy content in the water molecules themselves at constant temperature, and have to give up this heat in order to form clouds.

Water vapor on other hand has enormously higher heat capacity due to something called latent heat of vaporization.

The heat of vaporization comes from the same source as the heat used to elevate the surface temperature n the first place, the incoming IR radiation.

where L = latent heat of vaporization, ρ = density of air, qs = specific humidity at the surface, qr = specific humidity at a reference height, usually 10m, CDE = empirically measured aerodynamic humidity transfer coefficient (typically around 10 ^ -3 over the ocean), Ur = wind speed at the reference height.

Not correcting the heat of vaporization for the change in temperature from 0 C to 20 C, that required 8.6795 g * 2.502 E3 J / g = 2.172 E4 J.

Latent heat of vaporization soaks up 500 times more energy to vaporize than other molecules raising their temperature a degree kelvin.

The LWIR energy is in latent heat of vaporization.

It didn't have have to be hotter than room temperature you just had to replace the latent heat of vaporization being carried off by the alcohol fumes.