| 41. | On houses they serve as a retrofit on existing windows in order to improve their thermal efficiencies.
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| 42. | This reference states that a 20 % to 30 % increase in engine thermal efficiency is possible.
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| 43. | Thus an excessively high ratio can lead to a decreased thermal efficiency compared to other engine geometries.
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| 44. | By the time this was achieved the thermal efficiency gains were lost, and the experiment was abandoned.
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| 45. | Overall thermal efficiency is 60 %.
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| 46. | This prevents the ash from building up and sintering onto the boiler tubes thus significantly reducing thermal efficiency.
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| 47. | Further improvements in core thermal efficiency can be achieved by raising the overall pressure ratio of the core.
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| 48. | This condition allows higher thermal efficiency.
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| 49. | To reduce fuel costs the thermal efficiency of both types of engine have been improved over the years.
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| 50. | The latest technologies in Formula One engines have seen a boost in thermal efficiency to almost 47 %.
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