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Convective heat

I ewton s Cooling L w of Heat Convection. The heat-transfer rate per unit area by convection is directly proportional to the temperature difference between the soHd and the fluid which, using a proportionaUty constant called the heat-transfer coefficient, becomes... [Pg.482]

Fig. 3. Humidity chart illustrating changes in air temperature and humidity in adiabatic direct-heat (convection) dryers. AB is an adiabatic saturation line. Fig. 3. Humidity chart illustrating changes in air temperature and humidity in adiabatic direct-heat (convection) dryers. AB is an adiabatic saturation line.
The movement of these plates can ies with it continents, ocean basins and mountains. Scientists believe that convection currents are generated as a result of great heat within the earth, as illustrated in Figure 14. lO. Below the crust, the hot rocks and metal in liquid form rise to the crust, cool and sink into the mantle causing a turbulence through heat convection. The hot rocks become hardened at the surface of the mantle and push the crust which is part of the hug plates that are afloat the mantle. This movement of plates can cause the following ... [Pg.437]

If the plates pull down, they would sink into the mantle and melt to form ocean basins. Some of the molten rock of these plates may travel to the earth s surface through the crevice so formed due to heat convection and cause a volcano. [Pg.437]

Condition (4) assumes that the heat convected from the plate by the flow of gas through it is negligible compared with that conducted from the plate to the surroundings. This assumption is reasonable for a GC system but, as will be seen when the heat of adsorption detector is considered, this will certainly not be true when the mobile phase is a liquid. [Pg.211]

Consider the heat balance of the cell. However, as opposed to the GC column, the heat capacity of the liquid mobile phase in an in LC column is relatively large. Consequently, heat convected from the cell by the mobile phase must also be taken into account. It follows that... [Pg.220]

Heat Evolved in Cell) - (Heat Convected from Cell by Mobile Phase)... [Pg.220]

Thus, inserting the above expressions for the heat conducted from the cell and the heat convected from the cell, together with the heat evolved from the cell, from equation (50) in equation (44),... [Pg.224]

As the (n)th plate of the column acts as the detecting cell, there can be no heat exchanger between the (n-l)th plate and the (n)th plate of the column. As a consequence, there will be a further convective term in the differential equation that must account for the heat brought into the (n)th plate from the (n-l)th plate by the flow of mobile phase (dv). Thus, heat convected from the (n-l)th plate to plate (n) by mobile phase volume (dv) will be... [Pg.228]

A forced-draft, gas-fired burner is seated at the top of the inner tube and produces a spinning cyclonic flame that reaches down to the bottom of the furnace tube. The hot combustible gases return over the boiler shell, which is provided with heat convection fins to extract more heat before the upward flowing gases exit the boiler. The furnace tube is fitted with a top and bottom, cast-steel flame retainer. These design features act to increase flue gas residency time and provide improved structural integrity to the pressure vessel. [Pg.39]

Thus the heat convected from the (n-l)th plate to plate (n) by dv will be... [Pg.86]

It is seen from the curves in figure (9) that the heat convected into the detector cell or plate also distorts the curves, It is apparent that, unless the heat lost radially is extremely high, so that little heat is convected to the sensor, symmetrical integral peaks will not be obtained. This heat loss appears impossible to achieve in practice and thus, the heat of absorption detector does no seem viable for LC. [Pg.89]

We first recall the physical situation to facilitate this, we draw a sketch (see Fig. 1). At high oven temperatures, the heat is transferred from the heating elements to the meat surface by both radiation and heat convection. From there, it is transferred solely by the unsteady-state heat conduction that surely represents the rate-limiting step of the whole heating process (Fig. 1). [Pg.5]

PRANDTL NUMBER. A dimensionless number equal to the ratio of llie kinematic viscosity to the tlienuoiiielric conductivity (or thermal diffusivity), For gases, it is rather under one and is nearly independent of pressure and temperature, but for liquids the variation is rapid, Its significance is as a measure of the relative rates of diffusion of momentum and heat m a flow and it is important m the study of compressible flow and heat convection. See also Heat Transfer. [Pg.1366]


See other pages where Convective heat is mentioned: [Pg.4]    [Pg.240]    [Pg.378]    [Pg.224]    [Pg.230]    [Pg.41]    [Pg.113]    [Pg.541]    [Pg.1402]    [Pg.503]    [Pg.451]    [Pg.268]    [Pg.354]    [Pg.427]    [Pg.246]    [Pg.46]    [Pg.617]    [Pg.340]    [Pg.149]    [Pg.302]    [Pg.587]    [Pg.82]    [Pg.302]    [Pg.292]    [Pg.759]    [Pg.11]    [Pg.55]   
See also in sourсe #XX -- [ Pg.16 , Pg.47 , Pg.207 , Pg.241 ]

See also in sourсe #XX -- [ Pg.266 ]




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Benard convection, heating from

Benard convection, heating from below

Channel flow, natural convection heat transfer

Coefficient of convection heat transfer

Combined Convection, Radiation, and Conduction Heat Transfer in Constant-Rate Period

Conduction and convection of heat

Conduction heat transfer convection

Convection Modes and Heat Transfer Coefficient

Convection heat exchange

Convection heat flux

Convection heat loss

Convection heat transfer general discussion

Convection heat transfer physical mechanism

Convection heat-transfer coefficient (

Convection heat-transfer data, correlation

Convection in Isothermal Circular Tube with Viscous Heating

Convection microscale heat transfer

Convection of heat

Convection, heat transfer mode

Convective Heat Exchange Due to Mass Flow

Convective Heat Transfer in Microchannels

Convective Heat Transport due to Feed

Convective diffusion of heat

Convective fluxes, heat combustor

Convective fluxes, heat transfer, atmospheric

Convective heat and mass transfer. Flows with phase change

Convective heat and mass transfer. Single phase flow

Convective heat conduction equation

Convective heat exchange

Convective heat exchange coefficient

Convective heat flow

Convective heat flux

Convective heat loads

Convective heat transfer

Convective heat transfer applications

Convective heat transfer coefficient

Convective heat transfer porous media

Convective heat transfer process

Convective heat-transfer rate

Convective heating

Convective heating

Convective heating from local

Convective section heat-recovery

Convective section waste-heat

Convective section waste-heat steam

Convective section waste-heat steam generation

Convective tubes, heat recovery

Cylinders forced-convection heat transfer from

Dense-phase fluidized beds convective heat transfer coefficient

Drying convective heating

Electronics forced convection heating

Empirical and Practical Relations for Forced-Convection Heat Transfer

External forced convection heat transfer

Fluidized beds convective heat transfer

Forced Convection Heat Transfer Inside Pipes

Forced convection heat transfer

Forced convection heat transfer horizontal flows

Forced convection heat transfer inside tubes

Forced convection heat transfer liquids

Forced convection heat transfer outside tubes

Forced convection heat transfer phenomena

Forced convection heat transfer profiles

Forced convection heat transfer tube bundles

Forced convection heat transfer variations

Forced convection heating process

Forced heat convection

Free and Forced Convective Heat Transfer

Free-Convection Heat Transfer on a Vertical Flat Plate

G Strong Convection Effects in Heat and Mass Transfer at Low Reynolds Number - An Introduction

Gas and Heat Requirements in Convection Drying

Gas convection, heat transfer

Heat Transfer Outside Various Geometries in Forced Convection

Heat Transfer in Convection Drying

Heat by natural convection

Heat convection

Heat convection coefficient

Heat convection definition

Heat convection natural

Heat convection-heating products

Heat convective drying

Heat convective, dimensional analysis

Heat exchangers forced convection

Heat exchangers natural convection

Heat exchanges convective/radiative

Heat flux by convection

Heat flux density conduction/convection

Heat generation natural convection with

Heat loss convective

Heat rates, with natural convection

Heat transfer by convection

Heat transfer coefficients convective boiling

Heat transfer coefficients, film convection and radiation

Heat transfer combined convective

Heat transfer convection

Heat transfer forced convection approximation

Heat transfer forced convective

Heat transfer free convective

Heat transfer in natural convection

Heat transfer in nucleate boiling and convective evaporation

Heat transfer mechanisms convection

Heat transfer mixed convective

Heat transfer natural convection

Heat transfer natural convective

Heat transfer particle convective component

Heat transfer, by forced convection

Heat transfer. Conduction, convection and radiation

Heat, cycle convection

Heat-transfer coefficients for natural convection

Interfacial convection heat transfer

Laminar flow, forced heat convection

Mixed convection heat transfer

Natural (Free) Heat Convection

Natural convection heat transfer coefficients, example

Natural convection heating process

Natural convection, heat-transfer coefficients

Natural convection, single-phase heat transfer

Particle convective heat transfer

Particle convective heat transfer coefficient, axial

Pharmaceutical drying, convective heat

Plate heated, natural convection

Rayleigh-Benard convection, heating

Rayleigh-Benard convection, heating from below

Reformer Convective Heat Transfer Reformers

Reformer convective heat exchange

Scaling and the Dimensionless Parameters for Convective Heat Transfer

Similarity in Convective Heat Transfer

Simultaneous Heat Transfer by Radiation and Convection

Single-Phase Convective Heat Transfer

Supercritical pressure forced convection heat transfer

Synthesis under Conventional Convective Heating

The Convective Heat Transfer Coefficient

The Equations for Turbulent Convective Heat Transfer

The Equations of Convective Heat Transfer

Thermal convection heat transfer

Turbulent flow forced heat convection

Vasodilation, convective heating

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