refrigerant air conditioning Articles

  • A life cycle greenhouse gas assessment of remanufactured refrigeration and air conditioning compressors

    Remanufacturing can importantly reduce the resource intensity and increase the eco-efficiency of product systems by utilising recovered end of life (EOL) parts. A life cycle assessment (LCA) has been carried out to determine the greenhouse gas emissions from the production of a remanufactured compressor vs. a new original equipment manufacturer (OEM) compressor. The remanufacturing consisted of ...


    By Inderscience Publishers

  • What is a ton of refrigeration?

    Commercial refrigeration systems in the US are mostly rated in tons of refrigeration and this term is used widely in other parts of the world. However, outside the US, cooling systems may be normally specified in kW (or MW) or in Btu/h. The roots for refrigeration are in the ice making industry, and the ice manufacturers wanted an easy way of understanding the size of a refrigeration system in ...


    By Power Knot LLC

  • What`s cool about air conditioning

    Conservationists often mock Americans for their love affair with the car. But the air conditioner appears to be a growing rival for our affection. Twenty years ago only about one-quarter of US residences had central air conditioning; by 2005 it was up to 62%, according to the United States Census Bureau. ...

  • Walk-in refrigerators and freezers at a Prestigious hotel

    The Mark Hopkins Hotel in San Francisco is one of the most prestigious hotels in the city. It takes pride in the care and comfort of its guests. The refrigeration systems keep food cold or frozen. These are critical components of the hotel’s food service and it is paramount that no system be taken out of service. With a view to becoming more energy efficient, the hotel engaged Power Knot ...


    By Power Knot LLC

  • Refrigerant gas management (case study)

    Executive Summary Refrigerant leaks are one the highest maintenance expenses for organizations using or maintaining gas. In addition to compliance, management of refrigerant is important from a cost perspective. A typical 100-store supermarket chain operates with 400,000 lbs. of refrigerant within their refrigeration and air conditioning systems. Assuming an average cost of $6 per ...


    By Verisae

  • Minimizing Refrigerant Emissions in HVAC Systems

    Managing the operation and maintenance of a facility's air conditioning equipment has always been a major responsibility, as chillers often represent the single largest electrical load in a facility. Since the annual cost of operating chillers is a major ...


    By IHS Markit

  • Refrigerant leak creates environmental problems for businesses

    A great concern for companies is a refrigerant leak in their refrigeration and air-conditioning (RAC) system or heating, ventilation and air conditioning (HVAC) system. That’s because gases that escape during a refrigerant leak pollute and damage the environment. To better monitor and maintain the operation of these business assets, many companies utilize a refrigerant management program.There ...


    By Verisae

  • Exergoeconomic optimisation of an aqua-ammonia absorption refrigeration system

    Optimisation of thermal systems is generally based on thermodynamic analysis. However, the systems so optimised are often not viable due to economic constraints. In this paper, an attempt is made to minimise the overall operation and amortisation cost of an aqua-ammonia vapour absorption refrigeration system for air-conditioning application using the theory of exergetic cost. This simplified ...


    By Inderscience Publishers

  • Refrigerant leak detection is heavily regulated by government agencies

    Refrigerant leak monitoring in refrigeration and air-conditioning (RAC) systems and heating, ventilation and air conditioning (HVAC-R) equipment is very challenging, even for the most skilled HVAC-R technician. The leak could be well concealed from view in tubing, a system component, or in an operating or safety control component. With the Environmental Protection Agency (EPA) laws documented ...


    By Verisae

  • Refrigerant compliance includes calculating carbon emissions

    If you manage a facility using a refrigeration and air-conditioning (RAC) system or heating, ventilation and air conditioning (HVAC-R) system, it’s time to comply with federal and state environmental laws regarding carbon emissions. To help reduce greenhouse gases, the law requires calculating carbon emissions. This means monitoring, collecting data and performing extensive reporting of CO2 ...


    By Verisae

  • From air conditioning to urban planning, defaults and standards create dysfunction by design

    How can we stop outdated assumptions from forcing us to waste? Personal heaters are a summer survival tool for many office workers chilled to the bone by hyperactive ventilation systems — an act of self-defense against an epidemic of overcooling that is wasting energy and confounding comfort in not only offices but also large shops, schools and other buildings. An audit ...


    By Ensia

  • EPA mandates proper refrigerant gas recovery processes

    New EPA regulations require facilities that use air conditioning and refrigeration equipment to have a refrigerant recovery plan in place. The plan is needed to make sure that any harmful gases that might leak are captured. Refrigerant gases contain hydrochlorofluorocarbons, known to cause severe damage to the ozone layer and to promote global warming. A comprehensive plan is now in place to ...


    By Verisae

  • REFRIGERANT RULES: HOW NOT TO GET ZAPPED BY PROPOSED CHANGES

    Refrigerant management requirements are likely to become even stricter. Are you and your customers ready? The U.S. Environmental Protection Agency (EPA) has proposed new rules and record-keeping requirements that add to those already in effect concerning servicing, maintaining, repairing, or disposing of air conditioning or ...


    By IHS Markit

  • Understanding the CARB Refrigerant Gas Management regulations (2010 early actions)

    Many of today's AC/HVAC systems and refrigerant products have high global warming (GWP) potential emissions. These include air conditioning (AC) in cars, homes and office buildings, commercial and home refrigerators, fire suppressant systems, and much more. Many of today's AC/HVAC systems and refrigerant products have high global warming (GWP) potential emissions. These include air conditioning ...


    By Verisae

  • Refrigerant Gas Tracking: The importance of AC/HVAC system maintenance

    Refrigerant gases are used in commercial facilities such as office buildings, hospitals and warehouses to maintain the climate and air quality. Refrigerant management includes maintaining the air conditioning (AC) or heating, ventilating and air conditioning (HVAC) units often used to maintain the environment in these buildings.Refrigerant gases have been around for many years. These gases are ...


    By Verisae

  • Improving energy efficiency: About oil fouling in refrigeration systems

    Introduction Most air conditioning and refrigeration systems have a mechanical compressor which relies upon lubricating oil to function. During the normal course of the refrigeration process, ½% to 8% of the compressor’s lubricating oil is circulated throughout the system along with the refrigerant. Since the early days of refrigeration and air conditioning technology, the ...


    By Power Knot LLC

  • How does the Synthetic Refrigerant Additive (SRA) Affect Maintenance and Wear?

    This document describes how SRA affects the maintenance and wear of an air conditioning system into which it is installed. There are two synthetic catalysts in SRA: The major catalyst is one which removes the oil-fouling plaque. This plaque is extensively described by ASHRAE. The second is an advanced lubricity agent. The advanced lubricity agent is several ...


    By Power Knot LLC

  • Refrigerant leak detection is regulated by the US Environmental Protection Agency (EPA)

    Refrigerant leak detection is a difficult task in some heating ventilation and air conditioning systems or refrigeration and air conditioning systems. Sometimes the most experienced technicians find difficulty discovering a leak, which may be hidden in a system component, in tubing or in an operating or safety control switch. Refrigerant leak detection is a hot topic, following the recently ...


    By Verisae

  • How to better manage refrigerant gases in order to reduce greenhouse gases (GHGs)

    Carbon emissions reporting requires detailed monitoring record keeping of emission sources. Reducing a company's CO2 emissions has an impact on climate change. Carbon reporting needs to be approached in a structured organized way. Doing so in this way is known as carbon management. Carbon (CO2) Emissions Reporting: It's the law. In many countries, carbon emissions are required by law to be ...


    By Verisae

  • Global Warming Potential (GWP) significance of HCFC refrigerant gases

    The global warming potential of chemicals is well documented. This is usually documented by referencing how much a chemical will impact global warming as compared to a similar amount of carbon dioxide. Refrigerants typically outrank carbon dioxide by a factor of 100 or even 1000 and stay in the atmosphere longer to our climate's detriment. All greenhouse gases are allocated a global warming ...


    By Verisae

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