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NuTone became a publicly traded company in 1955. Other NuTone-created products included the residential kitchen ventilator hood and built-in kitchen countertop appliances. In 1967, when the Corbetts sold their interest in the company to the Scovill Manufacturing Company, [2] NuTone was the largest American producer of home electrical products.
Diagram of natural draft gas furnace, early 20th century. The first category of furnaces is natural draft, atmospheric burner furnaces. These furnaces consisted of cast-iron or riveted-steel heat exchangers built within an outer shell of brick, masonry, or steel. The heat exchangers were vented through brick or masonry chimneys.
A gas heater is a space heater used to heat a room or outdoor area by burning natural gas, liquefied petroleum gas, propane, or butane. Indoor household gas heaters can be broadly categorized in one of two ways: flued or non-flued, or vented and unvented .
A convection heater, also known as a convector heater, is a type of heater that utilizes convection currents [1] to heat and circulate air. These currents move through the appliance and across its heating element, [ 2 ] using thermal conduction [ 3 ] to warm the air and decrease its density relative to colder air, causing it to rise.
30 kW resistance heating coils This radiant heater uses tungsten halogen lamps. Electric heating is a process in which electrical energy is converted directly to heat energy. Common applications include space heating, cooking, water heating and industrial processes. An electric heater is an electrical device that converts an electric current ...
A positive-temperature-coefficient heating element (PTC heating element), or self-regulating heater, is an electrical resistance heater whose resistance increases significantly with temperature. The name self-regulating heater comes from the tendency of such heating elements to maintain a constant temperature when supplied by a given voltage.
A cartridge heater is a tube-shaped, heavy-duty, industrial Joule heating element used in the process heating industry, usually custom manufactured to a specific watt density, [1] based on its intended application. [2]
The first Dash 8-40CW, 9356, was built for the Union Pacific railroad in December 1989. In total, GE would build 756 Dash 8-40CWs. The Dash 8-40CW was succeeded by the Dash 9-44CW in 1994. Like most GE locomotives, the Dash 8-40CW saw continuous upgrades over the course of its production.