Technical Bulletin: Refrigerated Condensers for Control of Organic Air Emissions

摘要

This technical Bulletin describes both refrigeration and condensers that togetherform a control technology for organic emissions. These emissions may result from the evaporation of: Volatile Organic Compounds (VOC) that contribute to ozone formation in the troposphere; volatile organic Hazardous Air Pollutants (HAP) that may have a direct impact on our health and safety; or volatile stratospheric ozone depleting compounds. Terms like VOC and HAP are used in regulatory definitions to indicate specific chemical compounds and related emissions that are subject to a rule. The reasons for regulating specific groups of organic compounds may be very different. However, refrigerated condensers can be used to control vapors from most organic emissions that may be included in any of these regulatory definitions. The types of refrigeration discussed are: absorption refrigeration; mechanical compression refrigeration (using sulphur dioxide (SO2), chlorofluorocarbons (CFC) and hydrofluorocarbons (HFC)); Reverse Brayton Cycle refrigeration; and cryogenic (liquid nitrogen) cooling. This Technical Bulletin also discusses how a condenser operates, advantages and limitations for each type of refrigeration system, safety precautions that should be taken.