economizer


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economizer

[ē′kän·ə‚miz·ər]
(engineering)
A reservoir in a continuous-flow oxygen system in which oxygen exhaled by the user is collected for recirculation in the system.
(mechanical engineering)
A forced-flow, once-through, convection-heat-transfer tube bank in which feedwater is raised in temperature on its way to the evaporating section of a steam boiler, thus lowering flue gas temperature, improving boiler efficiency, and saving fuel.

Economizer

 

a component of a boiler unit. An economizer is a heat exchanger in which feed water is heated by flue gases before the water is supplied to the boiler. For a pressure of up to 22 kilograms-force per cm2 (2.2 megapascals) and a feed-water temperature below the dew point of the flue gases or for water that has not been deaerated, an economizer consisting of plain cast-iron tubes or of finned cast-iron tubes is used. For higher temperatures and pressures, an economizer consisting of steel tubes is used; most economizers of this type consist of plain steel tubes. An economizer increases the efficiency of a boiler unit.

economizer

economizer
Economizer/Re-breather.
economizerclick for a larger image
i. A reservoir in a continuous-flow oxygen system in which exhaled oxygen is collected for recirculation in the system. This way the consumption of oxygen is economized.
ii. The system of metering additional fuel in a carburetor or fuel injection system when the throttle is wide open. This additional fuel helps remove some of the heat when the engine is producing maximum power. The system provides an economical fuel-air mixture at all settings except at full power. Also called a power-enrichment system or a fuel economizer system.
References in periodicals archive ?
ASHRAE Handbook--HVAC Applications (2011) provides several high-limit controls for economizer operations, as demonstrated in Figure 1, including fixed or differential enthalpy with the high-limit curve of Line 1 and the economizer zones of A and C, fixed or differential dry-bulb temperature with the high-limit curve of Line 2 and the economizer zones of A and B, and a combination thereof with the high-limit curve of Line 3 and the economizer zone of A only, all of which consider climate zones and availability of humidity measurements.
The Hitec Economizer has already proved its effectiveness.
Grand Caravan features a segment-exclusive fuel economizer mode and gets up to 25 miles per gallon, or up to 500 miles driving range.
This White paper provides a unique insight into operating Cooling modules in economizer mode in a manner that doesn't compromise on efficiency or availability.
For this heat economizer, we have the differential thermic equation
The method only requires single-point temperature measurements for mixed, return, outdoor, and supply air that are already typically available for diagnostics and economizer control.
A fluid economizer system is incorporated into a chilled water or glycol-based cooling system.
Stetz will explain how to identify seemingly imperceptible failures of economizers used in commercial building air handlers and rooftop units to save money.
5 mw condensing economizer smoke in the acquisition and installation of the boiler house purchase silk.
In this diagram, the chillers are labeled CH-1 through CH-5, the water-side economizer heat exchangers are labeled HX-1 to HX-5, and the variable primary pumps are labeled P-1 to P-5.
EDF Climate Corps fellow Mike McCarthy, an MBA candidate at Duke University's Fuqua School of Business, worked this summer at AT&T to evaluate economizer operations across AT&T facilities in the United States.
Soundview Plaza was recognized for the ENERGY STAR award through monthly physical systems checklists, the installation of T-8 lamps and electronic ballasts throughout office and parking garage spaces, electronic emergency lighting, and the use of the Economizer system, which uses outside air whenever possible and helps to minimize the need for mechanical heating and cooling of the building.