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 ?
Air-side economizers cool data centers by bringing outside air into a building and distributing it to servers.
Both Taylor (3) and Stein (4) have recommended head-pressure control at the chillers as a means of permitting chiller operation using cold condenser water during partial economizer.
Supply side process points for the unit shown in Figure 1 using a Heat Recovery Economizer at winter design
The mechanical TXV was used as an expansion device of economizer branch.
The electric savings from precooling the CHWR with a water economizer are shown in Figure 3.
Gases flow in downward sense, from the warm upper head of the heat economizer.
Economizer Test Matrix Mode Total % OA OAT, Outdoor RAT, Indoor Airflow, [degrees]F RH, [degrees]F RH, cfm ([degrees]C) % ([degrees]C) % (L/s) Cooling 2000 5-75 55 (12.
Economizers allow outside air to complement data center cooling systems and provide "free cooling" during colder months, significantly reducing energy usage and wear on some components in the cooling equipment.
It is possible that in this situation, entering economizer mode may lower the chilled water AT, causing our chillers to run less efficiently, thereby negating (or worse) any energy savings economizing may provide.
Critical to achieving comfort levels were the economizer fans that would bring up to 20 air changes per hour during the evenings, when outdoor temperatures were below the comfort range.
2]-based DCV along with the economizer on heat pumps located in classroom and offices.
For the low temperature limit of the economizer, 15[degrees]C (59[degrees]F) was used to prevent overcooling, which causes an uncomfortable indoor environment.