What is the rate of heat transfer between hot oil and outside air?
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Only answer the following question using thermal circuit: What is the rate of heat transfer between hot oil and outside air?
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- The hot water coming out of a hydrothermal vent is sometimes called vent fluid. Why would you and I find these vent fluids to be an unpleasant thing to be exposed to? a They are some of the coldest fluids on Earth, being much colder than the normal freezing point of water. b They can be up to 400 degrees Celsius, and contain dissolved compounds like hydrogen sulfide, carbon dioxide, and methane. c The vent fluids are actually an exotic type of magma, made of silicate minerals. d They are actually ultra-pure water, with nothing at all dissolved in them; so pure that even simple cells will die due to the lack of nutrients in the fluids.Let us consider two water columns at different temperatures, one being at 40oC and the other being at 20oC. As both the water columns are separated by a glass wall of area 1m by 2m and a thickness of 0.003m. Calculate the amount of heat transfer. (Thermal Conductivity of glass is 1.4 W/mK)The physics of the convection heat transfer of thermosses phenomenon and the mathematical model should be discussed.
- The surface temperature of a heater with a diameter of 50 mm in a horizontal position is 40°C. This heaterIt was immersed in water at 20°C. Find the heat lost per unit length of the heater.Explain why heat loss from a cooking pan is reduced by fitting it with a lid. The lid prevents hot air from rising, hence reducing heat loss due to convection. It also reduces heat lost by evaporation (if a liquid is present in the pot).A 2.5-m-tall steel cylinder has a cross-sectional area of 1.5 m2. At the bottom, with a height of 0.5 m, is liquid water, on top of which is a 1-m high layer of gasoline, relative density of 0.8. The gasoline surface is exposed to atmospheric air at 101 kPa. What is the gage pressure at the liquid interface? what is the answer? a.0.077 atm b.15.839 psi c. 1.139 mmHg d.108.848 kPa
- Can someone please help me with creating an excel spreadsheet to calculate heat transfer phenomenon from a cylindrical fuel rod to the coolant? The excel sheet needs to be able to calculate these 3 things: Heat generated in a fuel rod at a distance ‘r’ from the center; Total Heat generated in the Reactor; the maximum temperature in the fuel and the cladding surface temperature, for a fuel rod at a distance ‘r’ from the center. The fuel used in this will be UO2 and there is a thin layer of helium that will separate the fuel from the cladding material. The user input parameters will be: the thermal neutron flux at the core, thermal conductivity of fuel, thermal conductivity of helium, thermal conductivity of the cladding, thickness of the helium layer, thickness of the cladding, diameter of the fuel pellet, fuel rod location (r), Cylindrical Reactor Size, and the fuel enrichment. For the fluid the user input will be coolant temperature and the heat transfer coefficient.In a concentrated solar power plant, molten salt tank is used to store the thermal energy from the sun during the day. The tank wall thickness is 3cm containing molten salt at a temperature of 390 degree Celsius. There is atmospheric air outside the tank at a temperature of 30 degree Celsius. If the surface temperature of the wall on the hot side is 370 degree Celsius and on the cold side is 230 degree Celsius. Calculate the heat flux as a result of heat loss from the molten salt to the atmospheric air if the thermal conductivity of the wall is O.2 W/(m-K)? O 933 W/m2 O 1066 W/m2 O 1333 W/m2 O 2400 W/m²A brass plate has a circular hole whose diameter is slightly smaller than the diameter of an aluminum ball. Ifthe ball and the plate are always kept at the same temperature,(a) should the temperature of the system be increased or decreasedin order for the ball to fit through the hole? (b) Choose the bestexplanation from among the following:I. The aluminum ball changes its diameter more with temperature than the brass plate, and therefore the temperatureshould be decreased.II. Changing the temperature won’t change the fact that the ballis larger than the hole.III. Heating the brass plate makes its hole larger, and that willallow the ball to pass through.
- Example of engineering application using Convection heat transfer. And draw a diagram of convection heat transfer. Note: Agricultural Machines only.Palm oil with a density of 1200 kg/m3 and the specific heat of 2 kJ/(kg.K) is to be heated from 20oC to 80oC before further processing. The oilplaced in a vessel (vessel) cylindrical upright with a diameter of 2 meters.The height of the oil vessel inside is 2 meters. For this purpose, an electric heating element with an electrical resistance type of heat is used.The electrical resistance used is a 2 mm diameter conductor wire wrappedwith magnesium oxide material with a thermal conductivity of 0.4 W/(m.K) thick 2.5 mm, then coated with the outermost metal 0.5 mm thick. Occurring power density on the outermost metal layer should not be more than 25 kW/m2. Warm-up time is expected to be only about 1.5 hours. Calculate: a) Required electrical power? (in kW) b) Rating of the heater by meter length? c) Maximum temperature of the heater element?On a hot summer's day concrete highway reach to temperature of 55°C. Suppose that a stream of water is directed on the highway so that the surface temperature is suddenly lowered to 35°C. How long will it take to cool the concrete to.45°C at a depth of 5 cm from the surface?