Furnaces

Lime is added to a blast furnace as a fluxing agent to help remove impurities, such as silica and phosphorus, from the iron ore. It also helps control the viscosity of the slag, which promotes better separation of the molten iron from the impurities. Additionally, lime helps maintain the desired chemical balance and temperature within the furnace for efficient iron production.

Mixing kerosene with home heating oil is generally safe and commonly done to lower the viscosity of the oil for better burning. However, it's essential to ensure that both fuels are of similar quality and compatibility. Consult with a professional to determine the appropriate ratio to avoid any potential harm to your furnace or home heating system.

Blast freezers are designed in many ways for fast freezing various food products such as fish and meat by blowing very cold air upon the products to be frozen for 8 to 24 hours until the frozen product reaches a core temperature of minus 12 to minus 20 C. Blast freezers are operated at minus 40 degrees C or lower.

A typical blast furnace consists of a small insulated cabin where strong fans are place right behind or on top of a cooling coil grid which is open in the front or partitioned to ensure air flow through the produce and back to fan suction -the strong gush of cold air hits the product to be frozen racked or hung right in front

and the job is done. Blast freezers could have a single door for loading and unloading or with separate doors for the same.

Your furnace primarily uses convection to transfer heat throughout your home. When the furnace heats up the air, it rises and circulates throughout the space, warming it up. It may also use some radiation to transfer heat directly to objects in the room.

The energy source is the same as for heating anything.

Gas,Electricity, Burning any fossil fuel. in a boiler (furnace) with water running in heat exchanging coils or manifolds. When heat is needed a pump circulates the hot water through the radiators and back to the furness.

1. The Burner
2. The heart of a gas furnace is the burner. Most gas furnaces have two or more burners controlled by a thermostat. When the temperature in the house falls below a certain level, gas begins to flow and an electronic ignition system ignites it. This hot, combusted gas rises past a heat exchanger and out through a vent that leads to the outside of the house. Air Circulation
3. A motor in the gas furnace pulls in air from an exchange -- a large flat grill in the floor, ceiling, or wall of a house. That air flows through ducts into the plenum of the furnace. The plenum is on the opposite side of the heat exchanger from the burner. Heat from the combusted natural gas warms the air as it passes by. The warm air is then taken back into the house through ducts that run to vents. Many houses have vents in every room. Maintenance
4. Modern gas furnaces are very efficient when their first installed, but that efficiency can rapidly decline. New furnaces often come with flimsy air filters which break down quickly. If the filters are not replaced, dirt gets into the air ducts. Ducts can also pull apart at their joints, leaving leaks. This decreases the efficiency of the whole system, because hot air can leak out under the house. Fortunately, most duct leaks can be fixed with simple HVAC tape. One of the most common problems in older furnaces is dirty burners. As grime accumulates over time, the burner becomes less efficient. It produces less heat and doesn't completely burn the gas, resulting in a colder house and higher heating bills. Fortunately, many burners can be cleaned with nothing but a wire brush.

There are different types of heating coils. Most are electric heat strips, refrigerant coils or hot water(hydronic). Your furnace\heater fan blows across the coils to heat your home or office.

As long as the CO2 canister is not being emptied or filled, it will be at the same temperature as the room that it is in. If you actively emptying the canister, the temperature can go drop significantly because of the drop in pressure (see Ideal Gas Law), and it can get hot if you are filling it. In general, if an object is in thermal equilibrium with it's surroundings (true as long you are not changing its temperature or the temperature of the surroundings at a significant rate), the object will be the exact same temperature as the surroundings.

A millivolt gas valve is used in a standing pilot type of appliance. In a normal application there are actually 2 valves in one. one valve controls gas flow to the pilot and the other part of the valve controls gas flow to the burner.

The pilot burns on a device or devices that produce a small amount of electricity ( millivoltage ) some valves accomplish this with a thermopile producing energy for the pilot and the burner portions of the valve. others use a thermocouple to produce energy to keep the pilot open and a thermopile to produce the energy for the burner side of the valve. In a typical gas fireplace valve the pilot runs on 30mV ( millivolts ) and the burner runs on 500 mV. it sounds like alot but it's only .5volts. This energy creates an electromagnet that pulls the valve open against a spring. That is the fail safe and how the pilot safety function works, if for any reason the energy isn't present, the spring snaps the valve shut shutting off the gas.

Millivolt valves are NOT field serviceable. They should never be disassembled as they will leak. Most issues with millivolt valves are caused by a simple lack of manufacturer recommended service and maintenance.

The water being held in the water tank when the furnace shuts off is at a set temp, the water tank hopefully is insulated, as time passes, the water temp has to drop because the furnace has not come on to maintain the set temp, also the controller could be faultly that controls the water temp for the hot water heater, the only time you have hot water is when the furnace runs.

Not much of anything. Drip legs were quite common in the past, and many cities and engineers still specifiy their use. They are intended to capture any condensed water that may have been transported in the gas. If you don't have a drip leg, I'd not worry about it. I was flagged for this in the Borough of Magnolia in NJ and had to install one to obtain a Certificate of Occupancy. You can call the township you live in to see if it is required.

The pilot flame is/should be about 1.5" long, the diameter of a pencil. When the burners are going, the gas is shot into the burner manifold, and the gas sent to the burner is designed to go to the back of the heat exchanger. So, in a typical 80,000 input heater, about 14"-18" long.

Chimney sweeps in the past were often poorly treated and faced harsh working conditions. Punishments for them could include physical abuse, long hours without breaks, and being exposed to dangerous situations in chimneys. Additionally, child chimney sweeps were particularly vulnerable to mistreatment and exploitation.

The Chimney Rock National Monument in Colorado has 200 steps leading to the top of the mesa where the ruins are located. These steps offer a challenging but rewarding hike with stunning views along the way.

A cupola furnace is a tall, vertical furnace used to melt iron and other metals. It works by charging alternate layers of metal and coke (carbon fuel) through a charging door at the top of the furnace. The coke is ignited, creating intense heat that melts the metal charge, which is tapped periodically from the base of the furnace.

It isn't actually duck tape, but duct tape. The rubberized fabric was originally used to seal the flexible metal "ducts" (conduits) that carry heated or cooled air (or vent air) within a building.

no it is not they are totally different kinds of tape. duck tape tape is much stronger that electric tape.

Alice H. Parker was indeed an important inventor who patented a gas-powered central heating furnace in 1919. The lack of widespread recognition for her may be due to historical biases that have often marginalized or overlooked the contributions of women and minority inventors. Efforts to highlight her achievements and those of other underrepresented inventors are ongoing.

In "Native Son," the furnace and heat symbolize the oppressive and suffocating environment that Bigger Thomas lives in, both physically and emotionally. The furnace represents the relentless heat of institutional racism and poverty that Bigger cannot escape, leading to his feelings of confinement and desperation. The heat also serves as a metaphor for the intense pressure and tension that Bigger experiences as he navigates a hostile society that restricts his opportunities and humanity.

Tuberculosis. She dies shortly after her roommate departs. Her last thoughts are of her husband Mike.

Zinkoff decides to face the Furnace monster because he wants to prove to himself that he is brave and capable. By confronting his fear, he is able to show his inner strength and courage.

Children chimney sweeps in the 18th and 19th centuries typically received very low wages, often as little as a few pennies or a small amount of food per job. Many were subjected to harsh working conditions and exploitation by their masters.

Because of their size they were used to clean smaller chimneys. They could fit up most chimneys, which adults took advantage of and sent them up the chimneys instead of an adult. They were also cheaper, as they did not demand as much (if any) pay for the job.

"Escape from Furnace" is set in a dystopian future, where the main character is imprisoned in an underground penitentiary known as Furnace Penitentiary. The exact time period is not specified, but it appears to be in a distant future where the government has implemented extreme measures to deal with crime and punishment.

Little Tom Dacre is crying because he has a dream in which he sees all the chimney sweepers, including himself, being released from their suffering and going to a place of joy and freedom. This dream contrasts with the harsh reality of their actual lives as chimney sweepers, which is filled with exploitation and hardship.