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Title:
THERMODYNAMIC ENGINE
Document Type and Number:
WIPO Patent Application WO/2017/025700
Kind Code:
A8
Abstract:
An expander of the piston (2) and cylinder (3) type is inverted from normal orientation, with the crankshaft (4) upper most and the cylinder "head" (5) lower most. The cylinder head has a pair of liquid injectors (6, 7) oriented for respective liquids pentane and glycerine to be injected as mists into contact with each other at the bottom of the cylinder. The pentane is vaporised by transfer of latent heat to it from the glycerine. Respective injector valves (9,10) from high pressure rails (11,12) fed by pumps (14,15) are provided. An exhaust valve (16) is opened by a cam (17) driven at crankshaft speed by a chain drive. An exhaust pipe 18 leads to a cyclone separator (19), in which the exhaust is caused to swirl, resulting in mist and droplets of glycerine flying out to the wall (20) of the separator and running to its bottom (21), whence it is drained periodically under control of a float valve (22). The pentane vapour is drawn off the centre (23) of the top of the separator. It should be noted that the fluid paths of the engine are closed The pentane vapour is passed to a condenser (26). From the bottom of this also via a float valve (27) liquid pentane is drained. The respective liquids are piped to collect in tanks (28,29). From the glycerine tank, this liquid is pumped by a low pressure pump (30) to a heater (31). This may be of many types, typically a waste-heat heat-exchanger or a solar collector.

Inventors:
PEARCE, Alan Charles (The Lodge, The DriveFarringdo, Exeter Devon EX5 2JD, GB)
WINTER, Natalie Adele (83 Farm Hill, ExwickExeter, Devon EX4 2LJ, GB)
FEW, Simon (89 Magdalen Road, London, Greater London SW18 3NF, GB)
Application Number:
GB2015/052344
Publication Date:
February 16, 2017
Filing Date:
August 13, 2015
Export Citation:
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Assignee:
GAS EXPANSION MOTORS LIMITED (2 Chapel Court, London SE1 1HH, GB)
International Classes:
F01K25/06; F01K21/04; F22B1/14; F22B1/18
Attorney, Agent or Firm:
BROOKS, Nigel (Hill Hampton, East MeonPetersfield, Hampshire GU32 1QN, GB)
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