Title: Systems and methods for expanding flow in a waste heat recovery system

Abstract

A waste heat recovery system includes a first heat exchanger, a second heat exchanger, and an expander. The first heat exchanger receives working fluid from a first portion of a first loop and provides the working fluid to a second portion of the first loop. The second heat exchanger receives the working fluid from a first portion of a second loop and provides the working fluid to a second portion of the second loop. The expander provides the working fluid to a first portion of a common line. The expander includes a stator. The stator includes a first inlet and a second inlet. The common line provides the working fluid to both the first loop and the second loop upstream of the first portion of the first loop and upstream of the first portion of the second loop.

Inventors:

Ernst, Timothy C.; Nelson, Christopher R.

Issue Date:

2021-01-26

Research Org.:

Cummins Inc., Columbus, IN (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1805425

Patent Number(s):

10900383

Application Number:

16/483,949

Assignee:

Cummins Inc. (Columbus, IN)

Patent Classifications (CPCs):

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01K - STEAM ENGINE PLANTS

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F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES

F01D1/023 - {the working-fluid being divided into several separate flows

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01K - STEAM ENGINE PLANTS

F01K13/02 - Controlling, e.g. stopping or starting
F01K23/065 - {the combustion taking place in an internal combustion piston engine, e.g. a diesel engine}
F01K23/10 - with exhaust fluid of one cycle heating the fluid in another cycle
F01K23/106 - {with water evaporated or preheated at different pressures in exhaust boiler}
F01K25/08 - using special vapours
F01K7/06 - the engines being of multiple-inlet-pressure type

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL

F01N2240/20 - a flow director or deflector
F01N3/02 - for cooling, or for removing solid constituents of, exhaust
F01N5/00 - Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy
F01N5/02 - the devices using heat

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02G - HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS

F02G2260/00 - Recuperating heat from exhaust gases of combustion engines and heat from cooling circuits
F02G5/04 - in combination with other waste heat from combustion engines

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

Y02T10/12 - Technologies for the improvement of indicated efficiency of a conventional ICE

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DOE Contract Number:  

EE0007281

Resource Type:

Patent

Resource Relation:

Patent File Date: 02/10/2017

Country of Publication:

United States

Language:

English

Subject:

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION