
Heat Transfer and Combustion -- A furnace wall consists of three …
Apr 4, 2018 · Homework Statement A furnace wall consists of three layers of material as shown below. The thermal conductivities are: Firebrick = 1.15 W m–1 K–1 Insulating brick = 0.17 W m–1 K–1 Ordinary brick = 0.62 W m–1 K–1 Calculate: (i) …
How much water is needed to raise the humidity in my house?
Nov 22, 2008 · Now before everyone starts saying it will cause mold, let me explain how I would vent it. I would run a vent from the dryer and put it directly into the ductwork of the house. We have a 2 speed forced air natural gas furnace. The fan runs on low speed all winter, and when the thermostat calls for heat, the high speed fan kicks on.
Understanding the Temperature Profile and Heat Flux in a …
Sep 28, 2013 · Homework Statement Sketched below is a solid, truncated cone, with a side profile of y=Cx. Based on the geometry, the area (in m2) of the left (truncated, x = 1m) and the right face of the cone is 4∏ and 36∏, respectively. The temperature of the left face is T1=50°C and T2=30°C. Assuming...
Calculate heat required to melt ingot - Physics Forums
May 30, 2016 · Homework Statement Given that aluminium has a specific heat of 0.9KJ/KgK, a melting point of 660 degrees Celsius and a latent heat of fusion of 390KJ/Kg, calculate the heat energy required to melt a 10Kg ingot, starting from a room temperature of 20 degrees Celsius. Homework Equations dQ= m c...
SSR vs SCR for heating element : what is the difference? - Physics …
Jun 5, 2013 · I see your point windadct... Very precise indeed. I do have an AC transformer but unfortunately I was willing to set up the furnace in a remote location, therefore I was hoping to set it up without a transformer... But apparently there is no way out, I have to carry the transformer somehow :D Many Thanks for the contributions
How does the venturi effect allow gas burners to operate without ...
Sep 2, 2011 · The most important part of the burner is the orifice plug with the hole in it. This is the point where the gas escapes from the hose or a pipe and enters the mixing bell of the burner.
What breaks down burnt carbon deposits? - Physics Forums
Jul 12, 2016 · The best way to clean off carbon deposits is in a muffle furnace at 550 C. However, salt and isopropanol ...
What Is the White Powder from Ultrasonic Humidifiers and Is It …
Nov 16, 2023 · Ultrasonic humidifiers atomize water and inject it into the air, where it evaporates. Anything dissolved in the water precipitates out as a white powder, which is noticeable as dust on surfaces throughout the room, especially near the humidifier. If the output is high enough, it …
Time to reach thermal equilibrium and/or a steady state - Physics …
Jul 20, 2011 · The furnace cavity is cylindrical with diameter, D = 0.1 m, and length > D (more than 10 times D). The furnace is held at constant temperature, [itex]T_{env}[/itex]= 873 K. A spherical sample of radius = 0.0125 m at temperature, [itex]T_{samp}(t=0)[/itex]= 293 K is "instantaneous" introduced into the furnace with no heat loss.
Heat flux through a composite wall - Physics Forums
Nov 8, 2015 · 1. State the problem A plane wall consisting of three different materials, each of constant thermal conductivity k. Assume steady-state temperature distribution. a) Comment on relative magnitudes of q(dot)''2 and q(dot)''3 and of q(dot)''3 and …