Heating value.
Heating value. The net heating value shall be determined as specified in paragraphs (e)(1) and (2) of this section or by using the engineering assessment procedures in paragraph (i) of this section.
(1) The net heating value of the process vent shall be calculated using Equation 64–2 of this section:
(2) The molar composition of the process vent (Dj) shall be determined using the following methods:
(i) Method 18 of appendix A of 40 CFR part 60 to measure the concentration of each organic compound.
(ii) American Society for Testing and Materials (ASTM) D1946–77 (incorporated by reference as specified in § 65.13) to measure the concentration of carbon monoxide and hydrogen.
(iii) Method 4 of appendix A of 40 CFR part 60 to measure the moisture content of the stack gas.