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Direction of heat flux on an isothermal surface is always normal to the surface.
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How heat flux affects performance of the boiler?
Heat flux is the primary performance paramater in boiler performance. Heat flux can be affected by many factors espacially by boiler tube fouling ( or exchange surfaces) that will considerably reduce heat exchange.
Difference between isothermal and isobaric heating of saturated steam?
Isobaric heating is heating by adding only heat energy while maintaining the same pressure (isobar). Isothermal heating is heating by adding only pressure and no heat energy.
What is difference between emitted radiation heat and reflected radiation heat?
The magnitude of the incident angle with the normal of the reflection surface and reflection angle with the normal of the surface are the same. The direction of the reflection is away form the surface and the incident is toward the surface.
What is the heat flux?
The term flux, is used to indicate the amount of something crossing a unit area per second. In the case of heat flux, it would be the number of calories or BTU crossing a square meter or foot per second.
What direction does heat trasfer?
Heat moves from a Hot surface to a cold surface in an atempt to acheive thermal equilibrium. This is true in most energy transfers High energy ALWAYS transfers to lower energy.
What is critical heat flux and what is its physical significance?
critical heat flux is the heat flux at critical point
The exchange of heat or moisture between an air mass and the underlying surface is called?
turbulent flux
Define isothermal expansion?
Isothermal expansion is what keeps gas at a constant temperature. It works by absorbing heat in order to conserve energy.
Why carnot cycle is called a two adiabatic and two isothermal process?
Adiabatic means there's no heat transference during the process; Isothermal means the process occurs at constant temperature. The compression and expansion processes are adiabatic, whereas the heat transfer from the hot reservoir and to the cold reservoir are isothermal. Those are the two adiabatic and isothermal processes.
What is true about isothermal process?
An isothermal process is one which does not take in or give off heat; it is perfectly insulated. Iso = same, thermal = heat. In real life there are very few isothermal processes. Heat loss accounts for most process inefficiencies.
What are examples of isothermal process?
An isothermal process is a change in a system where the temperature stays constant (delta T =0). A practical example of this is some heat engines which work on the basis of the carnot cycle. The carnot cycle works on the basis of isothermal.
What are the principles of calorimetry?
Isothermal Principle: total heat elimination = heat loss by radiation + convection + conduction + evaporation
What has the author Robert D Kelly written?
Robert D. Kelly has written: 'A comparison of surface sensible and latent heat fluxes for maircraft and surface measurements in FIFE 1987' -- subject(s): Temperature measurement, Grasslands, Kansas, Heat flux, Latent heat
How heat flux affects performance of the boiler?
Heat flux is the primary performance paramater in boiler performance. Heat flux can be affected by many factors espacially by boiler tube fouling ( or exchange surfaces) that will considerably reduce heat exchange.
What are the applications of vector fields in chemical engineering?
The applications are in transport phenomena, in determining the direction of flow in momentum transport, heat transfer, and mass flux.
What will be the Specific heat during an isothermal process?
That's kind of a trick question. Specific heat - also known as "heat capacity" is the energy required to change the temperature by a fixed amount. In the case of an isothermal process, the temperature isn't changing. Since specific heat is defined as (δH/δT), isothermal heat capacity would be (δH/δT)T which means, in English, the change in enthalpy with a change in temperature when the temperature isn't changing... you see the problem. If δT = 0, then δH/δT = ±∞ (positive if heat is added to the system to keep the temperature constant, negative if heat was removed to keep it isothermal) You could write some equations such that the heat capacity becomes a term in the equation. What you will generally find though is that the heat capacity is multiplying a dT term and when dT is zero, that term drops out and heat capacity is irrelevant for the calculation.
Difference between isothermal and isobaric heating of saturated steam?
Isobaric heating is heating by adding only heat energy while maintaining the same pressure (isobar). Isothermal heating is heating by adding only pressure and no heat energy.
