forced convection वाक्य
उदाहरण वाक्य
मोबाइल
- Starting in the 1980s Sony began incorporating heat pipes into the cooling schemes for some of its commercial electronic products in place of both forced convection and passive finned heat sinks.
- If Gr / Re ^ 2 \ gg 1, forced convection may be neglected, whereas if Gr / Re ^ 2 \ ll 1, natural convection may be neglected.
- In "'forced convection "', also called "'heat advection "', fluid movement results from external surface forces such as a fan or pump.
- :To get a start on this ( homework ) problem, look at the equations for conduction resistance ( in the heat exchanger ) and forced convection resistance in each of the fluids.
- For instance, a convection oven works by forced convection, as a fan which rapidly circulates hot air forces heat into food faster than would naturally happen due to simple heating without the fan.
- However In practice, when referring to the Reynolds number, it is understood that one is considering forced convection, and the velocity is taken as the velocity dictated by external constraints ( see below ).
- According to Telcordia GR-3028, " Thermal Management in Telecommunications Central Offices, " the most common way of cooling modern telecommunications equipment internally is by utilizing multiple high-speed fans to create forced convection cooling.
- During this cooling process required by the second law of thermodynamics, waste heat from the condensing steam is absorbed by the warm water that circulates through the cooling towers, where it cools by evaporation and forced convection of air.
- This low-energy fan-and-motor ventilation system can be cost-effectively powered by photovoltaics, with enhanced natural convection exhaust up a solar chimney-the downward incoming air flow would be forced convection ( advection ).
- A large part of the thermoregulation during flight in " Xylocopa " involves forced convection as a result of changes in flight speed, with active heat transfer to the abdomen and evaporative heat loss from the head at high temperatures.
- In this application, the vapor chamber acts as a heat flux transformer, cooling a high heat flux from an electronic chip or laser diode, and transforming it to a lower heat flux that can be removed by natural or forced convection.
- Many air and liquid cooling systems were devised and investigated, using methods such as natural and forced convection, direct air impingement, direct liquid immersion and forced convection, pool boiling, falling films, flow boiling, and liquid jet impingement.
- Many air and liquid cooling systems were devised and investigated, using methods such as natural and forced convection, direct air impingement, direct liquid immersion and forced convection, pool boiling, falling films, flow boiling, and liquid jet impingement.
- Cooling methods modelled include natural convection ( Totally enclosed non ventilated-TENV ), forced convection ( Totally enclosed fan cooled-TEFC ), through ventilation, water jackets, submersible, wet rotor and wet stator, spray cooling, radiation and conduction.
- Although forced convection from thermal gas expansion in zero-g does not fuel a fire as well as natural convection in a gravity field, some types of artificial forced convection are far more efficient than free convection, as they are not limited by natural mechanisms.
- Although forced convection from thermal gas expansion in zero-g does not fuel a fire as well as natural convection in a gravity field, some types of artificial forced convection are far more efficient than free convection, as they are not limited by natural mechanisms.
- The movement of the fluid can be driven by negative-buoyancy, as when cooler ( and therefore denser ) air drops and thus upwardly displaces warmer ( less-dense ) air ( natural convection ), or by fans or pumps ( forced convection ).
- The vasculature would bring cooled blood from the submerged body to the brain where there would be some amount of conductive and convection heat transfer based on the passage of blood through the vessels cooling the vessel via forced convection and the subsequent cooling of the brain via conduction between blood vessel and brain tissue.
- A recirculating air flow path resulted from the warm ( less-dense ) air rising in a south-side solarium, and cooler ( denser ) air falling on the north side to create pressure differentials that automatically moved excess solar thermal gain from the south to the north side of the building without forced convection systems.
- The junction-to-air thermal resistance can vary greatly depending on the ambient conditions . ( A more sophisticated way of expressing the same fact is saying that junction-to-ambient thermal resistance is not Boundary-Condition Independent ( BCI ) . ) JEDEC has a standard ( number JESD51-2 ) for measuring the junction-to-air thermal resistance of electronics packages under natural convection and another standard ( number JESD51-6 ) for measurement under forced convection.
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