GB Patent: GB-185,700,814
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| Aëriform fluid expansive engine
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Patentee:
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| John Smith (exact or similar names) - Dalston, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Mar. 23, 1857 |
Espacenet patent
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Joel Havens
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Description: |
| This engine patent was the subject of a brief article in the 1858-01-15 "The Engineer". To summarize, the expansion of steam lowers its temperature, and in an engine attempting to extract all possible work from the steam, the exhaust is at a temperature (he proposes 140 Fahrenheit) below the condensation temperature of steam, which results in the next injection of steam to be partially lost to condensation as energy is lost to again heating up the cylinder walls. A steam jacket is often used to hold the temperature of the cylinder steady and above the condensation point but that introduces its own inefficiencies. Therefore, the inventor proposes using a series of cylinders with additional "receivers", being an additional expansion chamber. The goal of these alternating cylinders and expansion chambers is to minimize the temperature range seen in any one cylinder, thus reducing the energy lost to temperature changes in the cylinders. The expansion chambers allows mixing of the steam so that no portion of it will fall below the condensation temperature. |
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