US7121906B2 — Method and apparatus for decreasing marine vessel…

Claim 1

Independent Claim 86 words

An apparatus for decreasing the temperature of exhaust from a marine power plant the apparatus comprising: at least one evaporator operable to be disposed within the exhaust from the marine power plant; at least one condenser having a plurality of tubes disposed within a housing, wherein the tubes are sized to permit a flow of coolant within the tubes into and out of the condenser; and at least one refrigerant feed pump operable to pump refrigerant within a circuitous path between the evaporator and the condenser.

Claim 2

Independent Claim 86 words

An apparatus for decreasing the temperature of exhaust from a marine power plant the apparatus comprising: at least one evaporator operable to be disposed within the exhaust from the marine power plant; at least one condenser having a plurality of tubes disposed within a housing, wherein the tubes are sized to permit a flow of coolant within the tubes into and out of the condenser; and at least one refrigerant feed pump operable to pump refrigerant within a circuitous path between the evaporator and the condenser.

Claim 3

Dependent Claim 19 words

The apparatus of claim 1 , further comprising a turbo-generator that includes a turbine coupled with an electrical generator.

Claim 4

Dependent Claim 17 words

The apparatus of claim 1 wherein the refrigerant pump has an operating speed that is selectively controllable.

Claim 5

Dependent Claim 22 words

The apparatus of claim 1 , further comprising a coolant source that provides the coolant flow into and out of the condenser.

Claim 6

Dependent Claim 13 words

The apparatus of claim 4 , wherein the coolant source is environmental water.

Claim 7

Dependent Claim 39 words

The apparatus of claim 2 , further comprising a selectively operable bypass valve disposed within the apparatus and positioned to provide a path between the evaporator and the condenser, so that refrigerant may be selectively bypassed around the turbo-generator.

Claim 8

Dependent Claim 17 words

The apparatus of claim 6 , further comprising a flow orifice disposed downstream of the bypass valve.

Claim 9

Dependent Claim 42 words

The apparatus of claim 1 , further comprising a recuperator disposed within the condenser, and the recuperator is positioned within the apparatus such that refrigerant from the refrigerant feed pump enters the recuperator and refrigerant exiting the recuperator passes into the evaporator.

Claim 10

Dependent Claim 63 words

The apparatus of claim 1 , further comprising a pair of the refrigerant feed pumps operable to pump refrigerant, wherein one of the feed pumps is connected to the condenser adjacent a first lengthwise end of the condenser, and the other of the feed pumps is connected to the condenser adjacent a second lengthwise end of the condenser, opposite the first lengthwise end.

Claim 11

Independent Claim 83 words

A method for decreasing the exhaust temperature of a marine vessel power plant, comprising the steps of: providing a Rankine Cycle device that includes at least one of each of an evaporator, a condenser, and a refrigerant feed pump; disposing the evaporator within an exhaust duct of a power plant of the marine vessel; operating the power plant; selectively pumping refrigerant through the Rankine Cycle device; and providing a coolant flow into and out of the condenser, wherein the coolant is environmental water.

Claim 12

Independent Claim 83 words

A method for decreasing the exhaust temperature of a marine vessel power plant, comprising the steps of: providing a Rankine Cycle device that includes at least one of each of an evaporator, a condenser, and a refrigerant feed pump; disposing the evaporator within an exhaust duct of a power plant of the marine vessel; operating the power plant; selectively pumping refrigerant through the Rankine Cycle device; and providing a coolant flow into and out of the condenser, wherein the coolant is environmental water.

Claim 13

Dependent Claim 28 words

The method of claim 10 , further comprising the step of controlling the refrigerant feed pump in response to the temperature and mass flow of the power plant.

Claim 14

Dependent Claim 23 words

The method of claim 10 wherein the Rankine Cycle device further comprises a turbo-generator that includes a turbine coupled with an electrical generator.

Claim 15

Dependent Claim 50 words

The method of claim 12 , further comprising the steps of: disposing a selectively operable bypass valve within the device, positioned to provide a path between the evaporator and the condenser; and selectively operating the bypass valve to bypass at least a portion of the refrigerant flow around the turbogenerator.

Claim 16

Dependent Claim 34 words

The method of claim 13 , wherein the bypass valve is selectively operated to bypass refrigerant around the turbo-generator during start-up of the Rankine Cycle device and during shut-down of the Rankine Cycle device.

Claim 17

Dependent Claim 24 words

The method of claim 13 , wherein the bypass valve is selectively operated to bypass refrigerant around the turbo-generator when the turbo-generator is inoperable.

Claim 18

Independent Claim 106 words

A method for decreasing the exhaust temperature of a marine vessel power plant, comprising the steps of: providing a Rankine Cycle device that includes a first evaporator, a second evaporator, and at least one of each of a condenser, a turbo-generator, and a refrigerant feed pump; disposing the first and second evaporators within at least one exhaust duct of a power plant of the marine vessel; operating the power plant; selectively pumping refrigerant through the Rankine Cycle device; and selectively passing refrigerant through the second evaporator, or diverting refrigerant around the second evaporator, to accommodate a change in the temperature and/or mass flow of the refrigerant.

Claim 19

Independent Claim 106 words

A method for decreasing the exhaust temperature of a marine vessel power plant, comprising the steps of: providing a Rankine Cycle device that includes a first evaporator, a second evaporator, and at least one of each of a condenser, a turbo-generator, and a refrigerant feed pump; disposing the first and second evaporators within at least one exhaust duct of a power plant of the marine vessel; operating the power plant; selectively pumping refrigerant through the Rankine Cycle device; and selectively passing refrigerant through the second evaporator, or diverting refrigerant around the second evaporator, to accommodate a change in the temperature and/or mass flow of the refrigerant.

Claim 20

Independent Claim 111 words

A method for suppressing the infrared signal of a marine vessel power plant, comprising the steps of: providing a Rankine Cycle device that includes at least one of each of an evaporator, a condenser, and a refrigerant feed pump; sizing the Rankine Cycle device to have the capacity to decrease the marine vessel's power plant exhaust temperature from a first predetermined temperature to a second predetermined temperature; disposing the evaporator within an exhaust duct of a power plant of the marine vessel; operating the power plant; selectively pumping refrigerant through the Rankine Cycle device: and providing a coolant flow into and out of the condenser, wherein the coolant is environmental water.

Claim 21

Independent Claim 111 words

A method for suppressing the infrared signal of a marine vessel power plant, comprising the steps of: providing a Rankine Cycle device that includes at least one of each of an evaporator, a condenser, and a refrigerant feed pump; sizing the Rankine Cycle device to have the capacity to decrease the marine vessel's power plant exhaust temperature from a first predetermined temperature to a second predetermined temperature; disposing the evaporator within an exhaust duct of a power plant of the marine vessel; operating the power plant; selectively pumping refrigerant through the Rankine Cycle device: and providing a coolant flow into and out of the condenser, wherein the coolant is environmental water.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2009-10-16	2010-04-17	2010-10-17	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2013-10-16	2014-04-17	2014-10-17	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2017-10-16	2018-04-17	2018-10-17	$7700.00	Window Closed / Lapsed

Method and apparatus for decreasing marine vessel power plant exhaust temperature

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag