Heater blankets

Why might it be effective for homeowners to use a water-heater blanket around the water heaters in their homes ... 

Resin Transfer Molding (RTM) The RTM system gives high quality surface on both the sides. A relatively low pressure (vacuum to 100 psi) process, RTM makes perfect shapes in 30 min to 1 h. The fabricator generally gel coats one or both mold halves, then lays continuous or chopped strand mat and the core, if used, into the bottom half, and closes the mold. The resin transfers into the mold through injection pressure, vacuum pressure, or both. Cure temperature depends on the resin system used. Heater blankets can heat the mold up to 202°C, if the matrix allows sensors to detect resin flow position in the mold and monitor resin and cure data [98]. 

Alternative to the airflow heating discussed in Sec. 27.8.3, heater blankets are sometimes employed on the inside or outside of the battery case. These blankets may be energized with any available electric energy source. Primarily this source will be either the DC bus of the same voltage as the battery or an aircraft AC bus of higher potential. Heaters may also be energized from an auxiliary ground supply. Heater blankets have the inherent poor thermal time constant of nonair-cooled batteries. 

RCF is sold in a variety of forms, such as loose fiber, blanket, boards, modules, cloth, cements, putties, paper, coatings, felt, vacuum-formed shapes, rope, braid, tape, and textiles. The products are principally used for industrial appHcations as insulation in furnaces, heaters, kiln linings, furnace doors, metal launders, tank car insulation, and other uses up to 1400°C. RCF-consuming industries include ferrous and nonferrous metals, petrochemical, ceramic, glass, chemical, fertiH2er, transportation, constmction, and power generation/incineration. Some newer uses include commercial fire protection and appHcations in aerospace, eg, heat shields and automotive, eg, catalytic converters, metal reinforcement, heat shields, brake pads, and airbags. 

External Combustor (experimental). The heat exehanger used for an external-combustion gas turbine is a direct-fired air heater. The air heater s goal is to achieve high temperatures with a minimum pressure decrease. It consists of a rectangular box with a narrow convection section at the top. The outer casings of the heater consist of carbon steel lined with lightweight blanket material for insulation and heat re-radiation. 

Idle deaerators or FW heaters usually are isolated from the boiler section and subjected to steam or nitrogen blanketing. 

Reduced heating and protection costs (insulating blankets, heaters, etc.). 

Auxiliary equipment such as a heater, insulating blanket, or spill-containment enclosure... 

Blanket-type electrical heaters are often used in combination with low thermal mass GRP tools (e.g., in the tooling concept advocated by Plastech TT, UK). The drawback with electrical heaters is that locally very high temperatures can occur. This can damage the tool and give an unacceptable variation in the curing process. 

One of the most versatile and robust heating techniques is the use of electrical resistance heaters. They are used in as varied heating approaches as hot plates, mantles, heat strips, immersion heaters, and even blankets. 

Watts are units of power, and wattage is the amount of power that is dissipated when energy is used. An electric clock might require 2 watts an electric blanket, 200 a toaster, 1,000 an electric clothes dryer, 4,500 and an electric water heater, 9,000. One kilowatt is the amount of electricity needed to light a 100-watt bulb for 10 hours an average home uses between 600 and 750 kilowatts of electricity a month. 

Similar to the low-temperature HTFs, engineers routinely deal with certain issues and problems with high-temperature fluids. They include 1) fluid expansion 2) inert gas blanket 3) draining and flushing 4) venting 5) heaters 6) insulation 7) filters and 8) heat tracing. 

While thermal blankets may treat contaminants near the surface, thermal wells offer the ability to treat contamination at much greater depths. In thermal well systems, heater wells are inserted into the contaminated soil to volatilize contaminants in situ. The generated off-gas is then collected in combination heater-vacuum wells and sent to an APC system. The number of heater-vacuum wells, and the well spacing, depend on site-specific parameters, but typically, one-third of the wells are heater-vacuum wells and the well spacing is 1.8-2.1 m. " With heaters operating at up to 800°C, thermal well systems are able to achieve soil temperatures of 300-500°C between wells. In order to fully remediate contaminated sites, the wells are inserted up to 0.9 m below the contaminated layer and operate for 30-60 days depending on the soil characteristics and contaminants of concern. ... 

Ceramic fiber blankets have been used for several years to line fired heaters. Usually, the blankets are installed in heaters by impaling them on stainless steel studs. 

In another small fired heater, castable refractory was originally installed for a design refractory face temperature of 1,600° F and a furnace shell temperature of 220° F. After several years of operation, the original castable spalled and cracked resulting in a shell temperature of 300° F. A four-inch ceramic refractory blanket was installed that dropped the furnace shell temperature to less than 200° F and reduced heat losses 55 percent. 

Insulation Blanket - A pre-cut layer of insulation applied around a water heater storage tank to reduce standby heat loss from the tank. 

Liquid drains, manifolded and taken to a heater for vaporizing, process safety valves, vents and thaw lines, together with the major casing vents, all culminate in a vent stack to the atmosphere. This stack should have its exit point well above surrounding equipment to prevent it from being a hazard to personnel in the event of a fire. A continuous flow of nitrogen at a velocity of 1 ft/sec can be supplied at the bottom of the vent stack to blanket all process and casing equipment from air. A check valve placed in this line provides added protection. 

Gorix used in car seats enables uniform heat to be applied and controlled with a slider. The idea has been considered for possible use in carpets as a replacement for central heating. Gorix can also be used for clothing, heater beds and blankets, heated spinal injury board, alpine recovery stretcher and thermal boots/gloves. 

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