Counterflow heat exchanger
a heat exchanger and counterflow technology, applied in indirect heat exchangers, conduit assemblies of stationary plates, lighting and heating apparatus, etc., can solve the problems of waste, exhaustion of flue gas energy through the flue,
Inactive Publication Date: 2011-12-15
PB HEAT
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- Abstract
- Description
- Claims
- Application Information
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Benefits of technology
[0007]The foregoing summary, as well as the following detailed description of preferred embodiments of the invention, will be better understood when read in conjunction with the appended drawings. For the purpose of illus
Problems solved by technology
Absent a cost effective device and method for cooling the hot flue gas below the condensing temperature of the water vapor to recover the latent heat and to transfer the energy in the hot flue gas to a working fluid, the flue gas energy would be exhausted through the flue and wasted.
Method used
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[0019]Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
[0020]As used in the description of the invention and the appended claims, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. The words “and / or” as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. The words “comprises” and / or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.
[00...
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A counterflow heat exchanger having a plurality of heat exchanger elements in a stacked, spaced-apart arrangement forming a plurality of inter-element passages. Each element has fluid passages formed between facing sections of a first plate and a second plate. A first-fluid passage has an outer passage circumscribing an inner passage in fluid communication with the outer passage. An inlet-port traversing passage in fluid communication with the outer passage, an outlet-port traversing passage in fluid communication with the inner passage and a second-fluid traversing passage circumscribed by the inner passage traverse the first and second plates. A first-fluid inlet header includes the inlet-port traversing passage of each element. A first-fluid outlet header includes the outlet-port traversing passage of each element. A second-fluid inlet passage in fluid communication with the plurality of inter-element passages includes the second-fluid traversing passage of each element.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is related to U.S. Provisional Patent Application No. 61 / 354,943, filed Jun. 15, 2010, and incorporated herein by reference and claims the earlier filing date of the provisional application.BACKGROUND OF THE INVENTION[0002]The present invention relates to a device and method for transferring heat from flue (or combustion) gas through an interposing wall (or plate) to a fluid without allowing the flue gas and fluid to mix. More particularly, the present invention relates to a counterflow heat exchanger and method for cooling flue gas below a condensing temperature.[0003]Most fossil fuels are combusted with ambient air in a chamber, such as a boiler. The combustion product gas is exhausted from the chamber through a flue. Typical flue gas from the combustion of fossil fuels contains substantial amounts of uncombusted nitrogen, and to a lesser degree carbon dioxide and water vapor respectively formed by the combustion of car...
Claims
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Login to View More IPC IPC(8): F28D7/00
CPCF28D9/0012F28D9/0043F28D21/0007F24H8/006Y02B30/106F24H1/32F24H8/00Y02B30/102Y02B30/00
Inventor SCEARCE, DAVID A.
Owner PB HEAT