Refrigerants have been around for many years. These gases are basically condensed under pressure to obtain chilled air. Refrigerants are able to extract heat out of the air and moderate the internal temperatures through the repetitive evaporating and condensing of the refrigerants.
In the 1970s, scientists discovered that certain refrigerants such as Freon and many others in the HCFC category could cause spontaneous, chemical reactions and destroy the delicate ozone layer protecting Earth´s atmosphere. Developments in mandatory refrigerant usage and new regulations were passed to restrict the methods of manufacturing and the ways that refrigerants could be used in common AC or HVAC systems. Refrigerants can not be purposefully vented or let to escape into the atmosphere.
Scientists know that refrigerants contribute to global warming since they have a very high global warming potential (GWP). GWP is a ratio developed to determine which chemical substances and refrigerant gases released into the atmosphere create more warming. These gases are considered Greenhouse Gases (GHGs). The most common greenhouse gas (GHG) talked about the most often is carbon dioxide (CO2) or just carbon for short. Little to many people know, there are many other substances such as many of the refrigerant gases that are used in many AC or HVAC systems that also contribute to Global Warming. Because these are not naturally occurring and the amounts vented are very high, damage to the ozone layer happens as these fluorinated gases degrade into different chemical compounds. How do HCFC refrigerants like R-22 harm the Earth's Ozone layer.
When refrigerants escape and drift up into the atmosphere, they go through chemical changes which react to the ultraviolet (UV) sunlight. This disintegrates the CFC molecules and rids the molecule of its chlorine atom. The released chlorine atom the reacts with the ozone (O3) chemical in the upper atmosphere. The chlorine atom causes a chemical reaction that changes oxygen (O3) to oxygen (O2). The reduced oxygen molecule is not as efficient as ozone at filtering out ultra violet radiation. This allows the strong and dangerous ultraviolet (UV) radiation to come through the atmospheric layers and down to the earth. For this reason as well as the greenhouse warming caused by some refrigerant gases, it is important that refrigerant gases are contained and not allowed to escape into the atmosphere.
Regulators like the Environmental Protection Agency (EPA) monitor manufacturing plants and commercial or industrial buildings and the related AC or HVAC systems they contain to make sure the refrigerant gases are not escaping into the atmosphere. Many systems, especially those over 2,000 pounds of refrigerant, are equipped with a gas monitors and auto detection technology to assure the accuracy of the system and its integrity to contain the refrigerants.
Compliance regulations make businesses monitor for system leaks and require repair of any damaged AC or HVAC systems within 14 days. Service maintenance verification is required in addition to detailed service records of all refrigerant usage. All records must be maintained for up to 5 years.
The European Union has been at the top of the list for regulating greenhouse gases and refrigerants. Regular inspections of AC/HVAC systems are made to monitor for leakages. As with the US EPA, inspectors check records for recovery systems. Refrigerants must be recovered in closed systems so that the gases don't escape into the atmosphere.
The EPA will issue fines to commercial facilities that violate the regulations or are not complying with refrigerant tracking and monitory reporting. In the early 1990s, Section 608 of the U.S Clean Air Acted certification is required for HVAC technicians to fix or maintain systems or to buy more than 20 pounds of refrigerants to recharge the systems.
The US Clean Air Act is a regulation that spells out the EPA's role in air quality, especially in protecting the ozone layer and the tracking and reporting of Greenhouse Gases. The U.S. Clean Air Act is maintained by the Environmental Protection Agency (EPA) of the US government. The Clean Air Act has had changes made in the 1990s and again in 2008 that are more stringent than when it was first written over a decade ago.
New legislation being writing and being passed in early 2009 and 2010 will further restrict refrigerant gas usage, reporting, and phase out of damaging HCFCs. With continued tracking of carbon emissions and the pending mandatory reporting of carbon, organizations of all sizes maintaining refrigeration systems with more than 50 pounds of refrigerant gas will need to maintain detailed service records.
Oil & Gas Management
The California Global Warming Solutions Act (AB 32), first passed in 2006 with additional early actions taking effect in 2010, is a broad and comprehensive directive with the goal of reducing greenhouse gasses (GHGs) by approximately 25% by the year 2020. This objective of the early action stems from increases in carbon equivalent emissions in California since 1990. The intent of the legislation to reduce greenhouse gasses to their 1990 levels, thereby reversing 16 years of pollution in less than 14 years.
As part of the California Global Warming Solutions Act (AB 32) the Air Resources Board (ARB) has approved an early action measure to reduce high-global warming potential (GWP) greenhouse gas (GHGs) emissions by establishing new legislation and defining requirements related to improved monitoring of AC/HVAC systems, enforcement of regulations, reporting of refrigerant usage, and recovery, recycling, or destruction of high-GWP refrigerant gases.
The greenhouse gasses (GHGs) as defined by the California's AB 32 are identical to those gasses identified in the Kyoto Protocol. These gases are already being regulated, monitored, and managed by many other countries around the World. In addition to carbon dioxide (CO2), which is the most widely known GHG, the following gasses are also defined as GHGs with high global warming potential (GWP) carbon equivalent emissions by the AB 32 legislation:
* Methane (CH4): a byproduct of waste decomposition, and natural geological phenomena; the majority of methane is derived from natural gas drilling.
* Nitrous Oxide (N2O): a pollutant created by industrial processes, motor vehicle exhaust, and industrial air pollutants reacting with the atmosphere; like methane, nitrous oxide can also be a product of waste decomposition in nature and agriculture.
* Sulfur Hexafluoride (SF6): a gas used for various electrical applications, including gas insulated switchgear. Sulfur Hexafluoride is also used for experimental applications.
* Perfluorocarbons (PFCs) and Hydrochlorofluorocarbons (HCFCs): a collection of commonly used refrigerant and aerosol gasses with a wide variety of other commercial applications. CFCs and HCFCs are considered Ozone Depleting Substances (ODSs), as defined in title VI of the US Clean Air Act (Section 608).
The California EPA's Air Resources Board (CARB) has developed a complex and highly detailed system of greenhouse gas management for refrigerant gasses, known as the Stationary Equipment Refrigerant Management Program, and stricter standards for new or existing refrigeration systems installation and ongoing maintenance. The refrigerant management programs details requirements for automated monitoring of systems, detailed usage and service book keeping, and the credentials to manage related to service technicians and their recovery equipment.
The proposed Stationary Equipment Refrigerant Management Program, which integrates two AB 32 early action measures, addresses the detailed monitoring and management of the PFCs and HCFCs noted above and includes tracking requirements for new and existing commercial and industrial refrigeration systems. Likely to be implemented by January, 2010, is the monitoring and management of high global warming potential (GWP) refrigerants in large systems in the range of 2,000 pounds of refrigerant gas.
CARB is charged with the monitoring GHGs and high GWP gasses, as well and the eventual development and enforcement of specific and quantitative new regulations covering carbon related emissions which refrigerant management with the tracking, reporting, cylinder management, and gas recovery for stationary refrigerant and air conditioning (AC) systems all becoming key integral parts.
The CARB proposal could also involve fines for mismanagement of refrigerant record keeping, intentional venting of systems, and the inability to regularly submit the required refrigerant usage reports. The CARB enforces Section 608 of the US Clean Air Act in specific and quantifiable terms in cooperation of the Environmental Protection Agency (EPA), as the existing national and state refrigerant regulations are applied to leaks, emissions, venting, and the recovery processes.
The overall intent of CARB's strategy is to monitor and reduce the introduction of man-made GHGs and high GWP gasses into the atmosphere, as called for in the California Global Warming Solutions ACT (AB 32) in effect since 2006 with tighter controls, monitoring, and overall regulations becoming enforceable by early 2010.
Refrigerant gas monitoring, tracking, and management are important business planning considerations. Just like organizations manage assets, like a delivery truck, the consequences the release of high GWP gases, such as refrigerant gases, must be consider. Refrigerants cost money, harm the ozone and environment, and are subject to mandatory carbon emissions reporting. As organizations with AC/HVAC systems containing refrigerant gas of 50 pounds or more will soon find out, the effective monitoring, management of data, and systematic reporting of refrigerant usage will be key to business success in our emerging carbon economy.
Daniel Stouffer has sinced written about articles on various topics from Blogging, Health and Entrepreneurship. Daniel Stouffer is a Product Manager for Refrigerant Tracker. This web-based software makes it easy to monitor, manage, and report refrigerant usage. Stay in compliance with government regulations. Learn about Verisae's Refrigerant Tracker at --. Daniel Stouffer's top article generates over 27100 views. Bookmark Daniel Stouffer to your Favourites.