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Forum: Reliability & Maintainability Questions and Answers

Topic: Reliability & Maintainability Questions and Answers

Topic Posted by: Reliability & Maintainability Forum (src_forum@alionscience.com )
Organization: System Reliability Center
Date Posted: Mon Aug 31 12:47:36 US/Eastern 1998

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Original Message:

Posted by: Clay Davis
Date posted: Thu May 11 14:03:05 US/Eastern 2000
Subject: Thermal Rating and Power
Message:
Do you know the relationship between the BTU/hr thermal rating and the specified power rating? Currently, the information states 610 BTU/hr, with a power rating of 125W. Generally, a power supply if this rating would yield BTU/hr of about 375 BTU/hr. Can someone verify this?


Reply:

Subject: Thermal Rating and Power
Reply Posted by: Jack Farrell (jfarrell@alionscience.com )
Organization: Reliability Analysis Center
Date Posted: Thu May 11 15:48:18 US/Eastern 2000
Message:
According to a handbook of conversions 1 BTU/Hr = 0.293018 Watts. Conversely 1 Watt = 3.412759 BTU/Hr. Therefore, 125 Watts would convert to 426.5 BTU/Hr. A realistic efficiency for a power supply would be 85-90% which would yield 362.5 383.8 BTU/Hr which is consistent with your thoughts. Something is not correct with the power supply information.


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