Content Description

 This is a Spanish translation of Standard 228-2023 completed by Alberto Garcia of Spain.

ASHRAE Standard 228 sets requirements for evaluating whether a building or group of buildings meets a definition of "zero net energy" or a definition of "zero net carbon" during building operation. Standard 228 draws from ASHRAE Standard 105, among others, to address energy and carbon flows across a site boundary, their measurement, and their balance. It includes allowances for sites that lack opportunity to produce adequate renewable energy, while placing additional requirements on the use of external carbon and renewable energy in the calculation. The standard defines the calculation of energy in terms of source - a multiplier on the energy crossing the site boundary to include energy used or lost in extraction, generation, and transit to the site. The main energy calculation is made in terms of annual average factors, but allowance is made for the calculation of individual hours where data is available.

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About ASHRAE

ASHRAE, founded in 1894, is a building technology society with more than 50,000 members worldwide. The Society and its members focus on building systems, energy efficiency, indoor air quality and sustainability within the industry. Through research, standards writing, publishing and continuing education, ASHRAE shapes tomorrow’s built environment today.

ASHRAE was formed as the American Society of Heating, Refrigerating and Air-Conditioning Engineers by the merger in 1959 of American Society of Heating and Air-Conditioning Engineers (ASHAE) founded in 1894 and The American Society of Refrigerating Engineers (ASRE) founded in 1904.