[Code of Federal Regulations]
[Title 10, Volume 3]
[Revised as of January 1, 2005]
From the U.S. Government Printing Office via GPO Access
[CITE: 10CFR434.602]

[Page 412]
 
                            TITLE 10--ENERGY
 
                    CHAPTER II--DEPARTMENT OF ENERGY
 
PART 434_ENERGY CODE FOR NEW FEDERAL COMMERCIAL AND MULTI-FAMILY HIGH 
RISE RESIDENTIAL BUILDINGS--Table of Contents
 
            Subpart F_Building Energy Compliance Alternative
 
Sec. 434.602  Determination of the annual energy budget.

    602.1 The Energy Use Budget shall be calculated for the appropriate 
Prototype or Reference Building in accordance with the procedures 
prescribed in subsection 502 with the following exceptions: The Energy 
Use Budget shall be stated in units of Btu/ft2/yr and the 
simulation tool shall segregate the calculated energy consumption by 
fuel type producing an Energy Use Budget for each fuel (the fuel 
selections having been made by a life cycle cost analysis in determining 
the proposed design).
    602.2 The Energy Use Budget is calculated similarly for the 
Reference or Prototype Building using equation 602.2.
[GRAPHIC] [TIFF OMITTED] TR06OC00.029

    Where EUB1, EUB2, EUBi are the 
calculated annual energy targets for each fuel used in the Reference or 
Prototype building and f1, f2, . . . fi 
are the energy conversion factors given in Table 602.2, Fuel Conversion 
Factors for Computing Design Annual Energy Uses. In lieu of case by case 
calculation of the Energy Use Budget, the designer may construct Energy 
Use Budget tables for the combinations of energy source(s) that may be 
considered in a set of project designs, such as electric heating, 
electric service water, and gas cooling or oil heating, gas service 
water and electric cooling. The values in such optional Energy Use 
Budget tables shall be equal to or less than the corresponding Energy 
Use Budgets calculated on a case by case basis according to this 
section. Energy Use Budget tables shall be constructed to correspond to 
the climatic regions and building types in accordance with provisions 
for Prototype or Reference Building models in subpart E of this part.

Table 602.2--Fuel Conversion Factors, for Computing Design Annual Energy
                                  Uses
------------------------------------------------------------------------
                 Fuels                          Conversion factor
------------------------------------------------------------------------
Electricity............................  3412 Btu/kilowatt hour.
Fuel Oil...............................  138,700 Btu/gallon.
Natural Gas............................  1,031,000 Btu/1000 ft\2\.
Liquified Petroleum (including Propane   95,5000 Btu/gallon.
 and Butane).
Anthracite Coal........................  28,300,000 Btu/short ton.
Bituminous Coal........................  24,580,000 Btu/short ton.
Purchase Steam and Steam from Central    1,000 Btu/Pound.
 Plants.
High Temperature or Medium Temperature   Use the heat value based on the
 Water from Central Plants.               water actually delivered at
                                          the building five foot line.
------------------------------------------------------------------------
Note: At specific locations where the energy source Btu content varies
  significantly from the value presented above then the local fuel value
  may be used provided there is supporting documentation from the fuel
  source supplier stating this actual energy value and varifying that
  this value will remain consistent for the foreseeable future. The fuel
  content for fuels not given this table shall be determined from the
  best available source.


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