| 1. | The increasingly powerful engines required more boilers with economisers and superheaters.
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| 2. | The Lancashire boiler was patented in 1844, and the economiser in 1845.
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| 3. | The efficiency of steam-raising is increased by a Green's economiser.
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| 4. | While in the Ministry of Finance, Tyagi earned a reputation as a strict economiser.
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| 5. | They were fitted with economisers and natural draught, working at a pressure of 160 psi.
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| 6. | Above the tube banks a single flat spiral tube was used as an economiser or feedwater heater.
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| 7. | Some preserved stationary steam engine sites still have their Green's economisers although usually they are not used.
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| 8. | This concept refers mainly to devices such as internal heat exchangers, independent subcooling cascades, economisers or boosters.
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| 9. | The engine needed more space and the engine house, boiler house and economiser were external to the main mill.
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| 10. | The HP cylinders had Corliss valves; they were steamed at 120psi, by four Lancashire boilers, An economiser was used.
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