Message - who can tell me something about building energy efficiency index?

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Posted by  flyjeep on December 05, 2003 at 03:48:04:

i have troubles in assessing building energy efficiency indexes, as i know , there're following kinds of ways or indexes :

1.building envelope
OTTV(Overall Thermal Transfer Value),
PAL(Perimeter Annual Load),

2.facility or equipment
CEC/AC(Co-efficient of energy consumption for air conditioning )

my question is what're advantages and disadvantages or limitations of each index? Especially "PAL" index, it seems difficult to find some useful information about this index in english or chinese, is it only used in Japan?

thank your help very much!

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