英语词汇“u factor”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

4. Symbolic uses: U is a coefficient representing the rate at which heat is lost through a structure, in B.Th.U. per hour per square foot per degree difference in temperature between the two sides (or the metric equivalent). Also U factor, U value.

1928 Jrnl. Amer. Soc. Heating & Ventilating Engineers 34 63 Let U = coefficient of heat transmission.

1958 Times Rev. Industry Sept. 24/1 To specify the standard the Ministry [of Power] has approved the U value of thermal transmittance coefficient.

1975 R. H. Waring All about Home Heating v. 40 For the same actual thickness of brick, an 11 inch cavity wall has a U factor of about 0·33, compared with a value of 0·43 for a solid brick wall.

1982 New Scientist 10 June 692/3 All the external walls are insulated... This should cut the ‘U’ value from 1·7 to 0·5.

单词	u factor
释义	> as lemmas U factor 4. Symbolic uses: U is a coefficient representing the rate at which heat is lost through a structure, in B.Th.U. per hour per square foot per degree difference in temperature between the two sides (or the metric equivalent). Also U factor, U value. Π 1928 Jrnl. Amer. Soc. Heating & Ventilating Engineers 34 63 Let U = coefficient of heat transmission. 1958 Times Rev. Industry Sept. 24/1 To specify the standard the Ministry [of Power] has approved the U value of thermal transmittance coefficient. 1975 R. H. Waring All about Home Heating v. 40 For the same actual thickness of brick, an 11 inch cavity wall has a U factor of about 0·33, compared with a value of 0·43 for a solid brick wall. 1982 New Scientist 10 June 692/3 All the external walls are insulated... This should cut the ‘U’ value from 1·7 to 0·5. extracted from Un.¹ < as lemmas
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