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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.
Does a candle have thermal energy?
A candle has thermal energy because of it flames, the flames have heat and thermal energy is heat.
How does heat transferred in conduction?
Heat is directly transferred, like a frying pan.
How is heat transferred through conduction?
Heat is transferred through contact between molecules.
Who is heat transferred in convection?
Heat transferred in convection occurs through movements of fluids.
Describe three ways heat can be transferred in a boiler?
what are the 3 ways to transferred heat into a boiler
How is steam produced in a boiler?
Steam is generated by heat from the combution of fuel in a furnace or by waste heat from a process. The heat is transferred to water in the boiler shell, which then evaporates to produce steam under pressure.
How does a steam engine divert the heat flow to perform work?
The heat is transferred to water by conduction in the boiler tubes. This provides steam under pressure, as the boiler is closed to the atmosphere. The pressure is transferred by pipes to cylinders, where the pressure can push on a piston, transferring work to the piston and expanding and cooling in the process. What happens then depends on the type and complexity of the engine involved. The steam is either lost to the atmosphere, or recycled through an evaporator to be used in the boiler again
What is WHRB boiler?
waste heat recovery boiler
What is the transfer of heat by movement of liquid or gases?
One form of heat movement in heated liquids is enjoyed in a domestic boiler cum radiators system. Here the boiler heats the water which is then pumped to the room radiators before being returned to the boiler. The so-called "radiators" are not principally radiators although some heat is radiated from them. More heat is transferred by convection when the hot radiator heats the air next to it. The classical name for heat transfer in liquids is Convection due to currents within the liquid caused by hotter liquid being less dense than colder liquid. In times past when houses had a "back boiler" tank connected to a hot water cylinder upstairs it was these convection currents which caused the heated water from the boiler to rise up to the cylinder, and the colder water to descend to the back boiler. In the case of gases hardly any heat is transferred by conduction or radiation, being transferred almost entirely by convection due to hotter gases being less dense than colder ones.
Does a candle have thermal energy?
A candle has thermal energy because of it flames, the flames have heat and thermal energy is 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 is a tangentially fired boiler?
A tangentially fired boiler has between 4 and 8 burners, placed in the corners of the boiler. These are sometimes angled vertically to maximize impingement of the flames. They are fired into the center of the boiler, not directly into the center, but at the wall to adjacent to them. This causes the flames to swirl inside of the boiler, causing an even distribution of flame throughout the boiler. This is shown pretty well here: http://www.alstom.com/power/coal-oil/utility-boilers/firing-systems This website also has a lot more detail than previously provided.
How do you heat canned nacho cheese?
I would recommend using a double boiler. If a double boiler is unavailable, I would heat it on low heat and stir it frequently.
How is conduction heat transferred?
the heat is transferred by direct contact of particles of matter
How does heat transferred in conduction?
Heat is directly transferred, like a frying pan.
Why economiser is used in boiler?
An economizer is used to heat boiler feedwater up closer to the temperature of the boiler water, using heat from the boiler exhaust gases, heat that would otherwise be wasted. The main reason is to improve the efficiency of the boiler. For every 44 degree F drop in exhaust gas temp. there is an 11 F rise in feedwater temperature and a 1% gain in boiler efficiency.
