A METHOD AND APPARATUS FOR IMPROVING THE OPERATION OF POSITIVE DISPLACEMENT EXPANDERS

A METHOD AND APPARATUS FOR IMPROVING THE OPERATION OF POSITIVE DISPLACEMENT EXPANDERS

A linear or rotary positive displacement expander ( 10 ) is fed by compressed gas or vapour from a reservoir ( 11 ) by means of a fast acting pulsed flow control valve ( 12 ) actuated by a PWM microprocessor ( 13 ) which receives input data from the expander ( 10 ) and the reservoir ( 11 ) to determ...

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Hauptverfasser: HENSHAW, IAIN JAMES, BENSTEAD, RUSSELL, REDFORD, SIMON JAMES, DERBY, JAMES WILLIAM
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BLASTING
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
STEAM ENGINES
WEAPONS
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creator HENSHAW, IAIN JAMES
BENSTEAD, RUSSELL
REDFORD, SIMON JAMES
DERBY, JAMES WILLIAM
description A linear or rotary positive displacement expander ( 10 ) is fed by compressed gas or vapour from a reservoir ( 11 ) by means of a fast acting pulsed flow control valve ( 12 ) actuated by a PWM microprocessor ( 13 ) which receives input data from the expander ( 10 ) and the reservoir ( 11 ) to determine the correct operation of the valve ( 12 ). By injecting single or multiple controlled volume pulses of gas into the expander ( 10 ), the need for additional pressure regulation between the reservoir ( 11 ) and the expander ( 10 ) is eliminated, and the expander can operate efficiently within its built-in pressure ratio capability whereby the gas or vapour is expanded to be as close as possible to ambient pressure at the outlet of the expander.
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subjects BLASTING
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
STEAM ENGINES
WEAPONS
title A METHOD AND APPARATUS FOR IMPROVING THE OPERATION OF POSITIVE DISPLACEMENT EXPANDERS
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