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  • Users: rth
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  1. rth

    Air flow measurement

    I need to measure accurately air flows in the range 0.009 to 0.39 kg/sec. The air is at ambient temperature and near atmospheric pressure. I have used vortex shedding meters in the past for this application but am having great difficulty in locating a supplier of these or any other suitable...
  2. rth

    Train Aerodynamics

    Does any data exist on the air pressure disturbances caused by passing trains? I am particularly interested in pressure/suction generated beneath a high speed train passing over a level crossing.
  3. rth

    Ethylene glycol at high temperature

    We have been asked to build test equipment for automotive radiators using pure 100% ethylene glycol as a test fluid at temperatures of up to 140 degrees centigrade.  We know that serious accidents have happened when this has been attempted by others. Does anybody have any...
  4. rth

    Acoustic cladding

    Has anybody been successful in automating the application of acoustic coating to submarine hulls?
  5. rth

    Flow measurement - water and water/glycol

    Please does anybody have good experience of an accurate and reliable non intrusive flowmeter for measuring flowrates of automotive coolant in situ in engine hoses?
  6. rth

    Oil in Refrigerant

    I am seeking a reliable and automatic method of continuously monitoring the oil content of refrigerant (R134a) in a working system under laboratory conditions. I would welcome news of any proprietary device or other method which has proved satisfactory and reliable.
  7. rth

    Air Conditioning - Refrigeration

    I am seeking components for use in vehicle air conditioning systems using carbon dioxide as a refrigerant. Any information or experience on compressors, heat exchangers and other components would be welcome.

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