Otis Singleton
The history of the furnace is a long and interesting one, with the first open flame to produce heat without soot being described by the Romans around 15 AD. However, the first coal-fuelled, electric fan and ductwork distributed forced-air wall furnace only came about around 1935. The development of the electric furnace is largely attributed to French inventor P.L.T. Héroult, who, from 1888 to 1892, used the high temperatures of the electric arc of the electrode to develop an alternative energy source for coal, thus inventing the electric arc furnace for industrial direct smelting.
| Characteristics | Values |
|---|---|
| Inventor of the first electric furnace | French Heroult (P.L.T.Héroult) |
| Date of invention | Between 1888 and 1892 |
| Purpose | Industrial direct smelting |
| Maximum capacity in the 1930s | 100 tons |
| Maximum capacity in the 1950s | 200 tons |
| Maximum capacity in the 1970s | 400 tons |
| First coal-fueled, electric fan and ductwork distributed forced air wall furnace | Around 1935 |
| First open flame to produce heat without soot | 1855 |
| Electric heat enters the picture | 1882 |
| Metal chromel discovered | 1905 |
| First American central heating system invented | 1919 |
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What You'll Learn
Electric arc furnaces were invented between 1888 and 1892
The first electric furnace was invented between 1888 and 1892 by French engineer P.L.T. Héroult, who used the high temperature of the electric arc of the electrode to develop an alternative energy source for coal. This invention was a significant milestone in the evolution of home heating technology, which had, until then, largely relied on wood-burning fireplaces and open fires.
The 1800s saw the introduction of cast-iron stoves and gravity furnaces, but these did not provide substantial heat throughout homes. The invention of the electric furnace, therefore, marked a significant advancement in temperature regulation and heat distribution.
Following the invention of the electric furnace, there were further developments in heating technology. In 1905, Albert Marsh discovered chromel, a metal 300 times stronger than other heating elements on the market. This discovery allowed him to construct a heating element that converted electricity to distributable heat. Marsh's invention paved the way for the first coal-fuelled, electric fan, and ductwork distributed forced-air wall furnace, which was invented around 1935.
Today, furnaces offer a wide range of fuel and warmth sources, including oil, natural gas, electricity, heat pumps, and geothermal technologies. The application of electric arc furnaces has also become increasingly versatile, with advancements in process equipment and smelting technology. The production capacity and scale of these furnaces have also increased over time, with the maximum capacity of an electric arc furnace increasing from 100 tons in the 1930s to 400 tons in the 1970s.
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Thomas Edison's electrical work began in 1882
The history of the furnace has come a long way since the days of George Washington. Thomas Edison's electrical work and contributions began in 1882, and they played a pivotal role in the evolution of home heating technology.
Edison, an American inventor and businessman, developed devices in various fields, including electric power generation, mass communication, sound recording, and motion pictures. In 1879, he devised a commercially viable electric light bulb, and in 1880, he founded the Edison Illuminating Company.
In January 1882, Edison demonstrated the feasibility of his electrical system by switching on the first 93 kW steam-generating power station at Holborn Viaduct in London. This was followed by the installation of his electric incandescent lighting system at Hinds, Ketcham & Company in New York City, which became operational in January 1881. The lighting system improved work production and allowed for accurate colour matching between samples and finished printed work.
On September 4, 1882, Edison's power station on Pearl Street in lower Manhattan came to life, marking the beginning of the electrical age. His electrical power distribution system provided 110 volts of direct current (DC) to 59 initial customers in the area, and by the next year, the number of customers grew to 513. This was a significant milestone as it signified the practical and commercial usage of electricity, which had previously been more of a novelty.
Thomas Edison's electrical work in 1882 laid the foundation for the widespread adoption of electric heat and power distribution, transforming the way people heated their homes and revolutionising the lighting industry.
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Albert Marsh invented a metal heating element in 1905
The history of heating technology has come a long way since the days of George Washington, when families huddled around a fireplace to stay warm. In the 1800s, cast iron stoves and gravity furnaces were introduced, followed by gas and electric furnaces in the 20th century. The evolution of heaters started to pick up in 1905 with Albert Marsh's invention of the chromel heating element. Marsh discovered the metal chromel, allowing him to create a heating element that was 300 times stronger than others on the market. This invention revolutionised electrical engineering and earned Marsh the moniker \"the father of the electrical heating industry\".
Marsh's chromel, or nichrome, was made of 80% nickel and 20% chromium. It had a high melting point of 1,400 °C and corrosion-resistant properties, making it ideal for electrical heating applications. By pushing electrical current through this metal heating element, Marsh was able to convert electricity into distributable heat. This basic principle of Marsh's original design is still used in modern infrared heating elements, although more efficient materials like ceramic and NiChrome have since been developed.
Before Marsh's invention, early electric heaters used lightbulbs, with credit often given to Thomas Edison, who patented the lightbulb in 1880. However, these heaters were inefficient and dangerous. Marsh's chromel heating element was a significant improvement, leading to the widespread adoption of electric heating and overtaking fuel-based heat sources. Within 30 years of Marsh's invention, many new homes and businesses had central heating systems based on his original design.
Marsh's contributions to the field of electrical heating were recognised during his lifetime. In 1936, he was awarded the John Price Wetherill Medal by The Franklin Institute for his significant contributions to the science of automotive engineering and outstanding discoveries in the physical sciences. In 1941, he received The Sauveur Award from the American Metals Congress for outstanding metallurgical achievement. Marsh's work in electrical heating technology paved the way for modern heating systems, improving temperature regulation and providing substantial heat to homes and businesses.
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Alice Parker invented the first US central heating system in 1919
The evolution of home heating technology has come a long way since the days of fireplaces that were used by George Washington. In 1919, Alice H. Parker, an African-American woman, invented and patented the first American central heating system. This was a remarkable milestone as it was achieved before the Civil Rights Movement and the Women's Liberation Movement.
Prior to Parker's invention, people relied on burning coal or wood as their main source of heating. Parker, who lived in New Jersey, felt that the fireplace was insufficient in keeping her home warm during the cold winters. She designed the first gas furnace that was powered by methane gas. Her heating system used independently controlled burner units that drew in cold air and conveyed the heat through a heat exchanger. This warm air was then fed into individual ducts to control the amount of heat in different areas. This was a form of zone heating where the temperature could be moderated in different parts of a building.
Parker's invention was a revolutionary idea for the 1920s as it conserved energy and paved the way for the central heating systems that are used today. It also decreased the risk of house or building fires by eliminating the need to leave a burning fireplace on overnight. The patent has served as a basis for the development of heating systems throughout the 20th century and even in modern times. For example, zonal heating and forced air furnaces, which are common features of modern central heating, can be attributed to Parker's design.
While Parker's initial designs were never used due to safety concerns, her idea of using natural gas and ducts to heat different areas of a house was a significant step forward in heating system technology.
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Modern furnaces offer advanced technology and energy savings
The first coal-fuelled, electric fan and ductwork distributed forced-air wall furnace was invented around 1935. Since then, furnaces have progressed significantly, offering a variety of fuel and warmth sources, such as oil, natural gas, electricity, heat pump, and geothermal technologies.
Modern furnaces have advanced significantly, offering improved technology and energy savings. Here are some ways in which modern furnaces have evolved:
Smart Thermostat Compatibility: Modern furnaces can integrate with smart thermostats, allowing for better temperature control. With smart technology, homeowners can adjust the temperature remotely and seamlessly integrate with home automation systems. This enables precise heating adjustments, improved energy efficiency, and substantial energy savings.
Improved Temperature Control: Innovations like Precise Comfort® technology allow modern furnaces to maintain the desired temperature with even heat distribution throughout the home, eliminating cold spots. This technology enhances comfort while optimising energy usage.
Energy Efficiency: High-efficiency furnaces have an Annual Fuel Utilization Efficiency (AFUE) rating of 90-98% or higher, depending on the model. These furnaces are designed to minimise energy waste and maximise energy conversion into heat. Upgrading to a high-efficiency furnace can lead to significant energy bill savings over time.
Enhanced Comfort: Modern furnaces incorporate advanced features such as variable-speed blower motors, modulating gas valves, and sealed combustion systems. These features enable precise fuel control, quieter operation, and improved indoor air quality. The ability to work in tandem with cooling systems helps reduce indoor humidity during summer.
Reduced Environmental Impact: By improving energy efficiency and reducing fuel waste, modern furnaces contribute to a reduced environmental footprint. Lower fuel consumption leads to fewer emissions, which is beneficial in mitigating global warming and enhancing indoor and outdoor air quality.
Overall, modern furnaces offer a range of advanced features that provide improved temperature control, energy savings, enhanced comfort, and a reduced environmental impact. Upgrading to a high-efficiency furnace is a smart investment that pays off in both comfort and long-term cost savings.
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Frequently asked questions
The first electric furnace was invented between 1888 and 1892 by French Heroult (P.L.T. Héroult).
The first electric furnace was used for industrial direct smelting.
An electric arc furnace (EAF) is a furnace that heats material by means of an electric arc.
Electric arc furnaces are used for steelmaking and in research laboratories and by dentists.
Electric arc furnaces use an electric arc to directly expose and heat the material inside the furnace.
