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Heaters, ceiling

Pipe StiU furnaces vary greatly and, in contrast to the early units where capacity was usuaUy 31.8—79.5 m /d (200—500 bbl//d), can now accommodate 3975 m (25,000 bbl) or more of cmde oU per day. The waUs and ceiling are insulated with firebrick and the interior of the furnace is partiaUy divided into two sections a smaller convection section where the oU first enters the furnace and a larger section fitted with heaters where the oU reaches its highest temperature. [Pg.202]

The walkthrough should focus on uneven temperatures, persistent odors, drafts, sensations of stuffiness. You may find that occupants are attempting to compensate for an HVAC system that doesn t meet their needs. Look for propped-open corridor doors, blocked or taped-up diffusers, popped-up ceiling tiles, people using individual fans/heaters or wearing heavier (or lighter) clothing than normal. [Pg.204]

Unit heaters A unit with a large propeller or cenhifugal fan to give high air volume and wide throws. Louvers direct the air flow in the direction required. May be ceiling mounted, discharging vertically or horizontally or floor mounted. Can be used with fresh air Rapid response to conhol by individual thermostat by use of multi-speed motors rapid warm-up available on intermittent systems Altered fresh air inlet facility. Electric supply required for each individual unit. 3 to 300 kW. [Pg.414]

Overhead radiant heaters 3.1-41 850-900 Flueless High level or ceiling mounted... [Pg.416]

In other unpublished work by CSIRO s laboratory, emissions were evaluated from an electric heater panel that was designed to replace office ceiling tiles. Specific construction details were unknown other than that the panel exterior was powder-coated steel. Emissions were dominated by 1-butanol and it was assumed that this originated from the powder coating, as may be the case with the oven above. [Pg.398]

A narrow air channel connects the cavity to the outside and allows a pressure exchange with the surroundings. A typical actuator does have a circular air chamber with a diameter of 8 mm and a height of 400 pm with the resistor mounted in the middle between floor and ceiling . The thermal response (warming up and cooling down of the air) can be described with a thermal relaxation time xt which is mainly determined by the heat capacity of the heater-resistor and the heat conductivity of the gas [21]. A second relaxation time is determined by the heat capacity of the whole pump body and the heat conductivity of the body to its surroundings. Due to the air channels there is also a (third) pneumatic relaxation time xp. Since the pneumatic system is non-linear, xp can only be approximated. [Pg.41]

The cells are emptied by attachment of one of the ports to a vacuum line incorporating a suitable trapping system, cleaned by several rinses with neat solvent and then with dichloromethane. Solvent is removed by a short period of suction arid the cel is finally dried under a radiant heater and stored in a desiccator. Prolonged passage of air through the ceil must be avoided otherwise fogging of the cell windows from atmospheric moisture may occur. [Pg.267]

A 2.75-m-liigh room with a base area of 3,7 m X 3.7 ui is to be heated by electric resistance heaters placed on the ceiling, which is maintained at a uniform temperature of 32°C at all limes, The floor of the room is al 17°C and has an emissivity of 0.8. The side surfaces arc well insulated. Treating the ceiling as a blackbody, determine the rate of heal loss from the room through the floor. [Pg.777]

FIGURE 35.8 Function of a heat-recovery unit with closed vapor hood (1, vapor hood 2, exhaust fan 3, supply air heat exchanger 4, supply air booster heater 5, fan for supply air 6, air distributor 7, pocket ventilation 8, room air heat exchanger 9, room air booster heater 10, temperature-control flaps 11, room-supply air fan 12, ceiling air distributor 13, air outlet louvers 14, warm-water unit 15, warm-water discharge). (Courtesy of J.M. Voith GmbH.)... [Pg.819]


See other pages where Heaters, ceiling is mentioned: [Pg.261]    [Pg.261]    [Pg.389]    [Pg.248]    [Pg.380]    [Pg.638]    [Pg.638]    [Pg.317]    [Pg.426]    [Pg.428]    [Pg.653]    [Pg.573]    [Pg.574]    [Pg.331]    [Pg.329]    [Pg.11]    [Pg.194]    [Pg.227]    [Pg.779]    [Pg.834]    [Pg.102]    [Pg.882]    [Pg.298]    [Pg.300]   
See also in sourсe #XX -- [ Pg.398 ]




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