Code of Federal Regulations (Last Updated: July 5, 2024) |
Title 10 - Energy |
Chapter II - Department of Energy |
SubChapter D - Energy Conservation |
Part 434 - Energy Code for New Federal Commercial and Multi-Family High Rise Residential Buildings |
Subpart C - Design Conditions |
§ 434.301 - Design criteria.
Latest version.
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§ 434.301 Design criteria.
301.1 The following design parameters shall be used for calculations required under subpart D of this part.
301.1.1 Exterior Design Conditions. Exterior Design Conditions shall be expressed in accordance with Table 301.1.
Table 301.1 - Exterior Design Conditions
Winter Design Dry-Bulb (99%) Degrees F. Summer Design Dry-Bulb (2.5%) Degrees F. Mean Coincident Wet-Bulb (2.5%) Degrees F. Degree-Days, Heating (Base 65) HDD Base 65 °F. Degree-Days, Cooling (Base 65) CDD Base 65 °F. Annual Operating Hours, 8 a.m. to 4 p.m. when 55 °F≤T≤69 °F Hours. 301.2 Indoor Design Conditions. Indoor design temperature and humidity conditions shall be in accordance with the comfort criteria in RS-2 (incorporated by reference, see § 434.701), except that humidification and dehumidification are not required.