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Heat Exchanger

Inactive Publication Date: 2011-02-03
PRODIGY ENERGY RECOVERY SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]We have designed a novel passive fluid-to-fluid heat exchange apparatus, which uses a unique helical or serpentine double walled conduit to provide unexpectedly high effectiveness in heat recapture from waste water (also known as “grey water”) commonly found in household shower and bath systems. Furthermore, we have discovered that single or double walled conduits can be used again

Problems solved by technology

The thermal energy, if not recovered, would be lost to the environment.
However, this application does not appear to disclose a double-walled helical conduit in which cold water flows.

Method used

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Definitions

[0064]Unless otherwise specified, the following definitions apply:

[0065]The singular forms “a”, “an” and “the” include corresponding plural references unless the context clearly dictates otherwise.

[0066]As used herein, the term “comprising” is intended to mean that the list of elements following the word “comprising” are required or mandatory but that other elements are optional and may or may not be present.

[0067]As used herein, the term “consisting of” is intended to mean including and limited to whatever follows the phrase “consisting of”. Thus, the phrase “consisting of” indicates that the listed elements are required or mandatory and that no other elements may be present.

[0068]As used herein, the term “turbulator” when referring to either a surface or to an insert having a surface that acts as a turbulator, is intended to mean that the surface has a plurality of projections extending away from the surface. Surface turbulators and inserted turbulators are used to incr...

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Abstract

Disclosed herein is a heat exchange apparatus. The apparatus comprises one or more double walled conduit, each having an outer conduit and an inner conduit located coaxially inside the outer conduit. The conduits define a first fluid passageway for cold water at a first temperature. A drain defines a second fluid passageway for grey water at a second temperature and is located in the drain and downstream of the grey water flowing therethrough. The grey water when flowing in the second fluid passageway effects heat transfer to the cold water flowing in the first fluid passageway across the inner and outer conduits.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of and priority to U.S. Provisional Patent Application Ser. No. 61 / 229,424, filed on Jul. 29, 2009 and U.S. Provisional Patent Application Ser. No. 61 / 323,441, filed on Apr. 13, 2010; the contents of each of these applications are hereby incorporated by reference.TECHNICAL FIELD[0002]The present concerns heat exchangers, and more particularly to single and double-walled heat exchanges.BACKGROUND[0003]Heat exchangers are well-known and widely used in a number of environments to recover thermal energy from fluids. The thermal energy, if not recovered, would be lost to the environment. Heat exchangers work by transferring heat from one fluid to another via a solid wall, which separates the two fluids. This straightforward principle has been used to recover heat from waste water (so called “grey water”) in, for example, household shower and bath systems. A number of designs of heat exchangers are described ...

Claims

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Application Information

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IPC IPC(8): F28F99/00
CPCE03C2001/005F28D3/02F28D7/024F28D7/08F28D15/02F28D21/0012F28F2265/16F28F1/32F28F9/02F28F13/12F28F19/01Y02B30/566F28F1/003Y02A20/30Y02B30/56
Inventor BOSE, RANAVELAN, DAVID
Owner PRODIGY ENERGY RECOVERY SYST
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