air conditioner Articles

  • That air conditioner noise is annoying!

    The sound of the HVAC System in your office or factory may be annoying depending on who you ask; the person who has to live with it, or the person who has to pay for it. To measure background noise levels objectively, we use Noise Curves. International standards organizations (ISO, ANSI and ASA) recognize the need to objectify judgements on the amount of ambient noise in enclosed ...


    By NTi Audio AG

  • MillerCoors Reduces Brewery Maintenance Issues with Thermal Edge Enclosure Air Conditioners

    Finding a reliable electrical enclosure air conditioner for breweries was a challenge for MillerCoors because technicians had no way to identify failures between routine maintenance inspections unless equipment overheated. In addition, air conditioners from previous vendors collected moisture creating sanitation problems and their filters were difficult to maintain. By relying on Thermal Edge ...


    By Thermal Edge Inc.

  • Thermal deoilers - Thermal deoiling of evaporator coils for air conditioners

    The Problem A major Air Conditioning company was mandated to have an alternate technology for degreasing evaporator fins. They had, until recently, been deoiling metal parts in a conveyorized solvent based vapor degreasing line, but the state environmental agency mandated that the line be shut down on a certain date due to the excessive water and air pollution it generated. The company ...


    By Epcon Industrial Systems, LP

  • An adjustable speed PMBLDCM drive for air conditioner using PFC Zeta converter

    In this paper a power factor correction (PFC) based Zeta converter fed voltage source inverter (VSI) based permanent magnet brushless DC motor (PMBLDCM) drive is employed for an air conditioner and controlled for its variable speed operation towards energy efficiency improvement. A single-phase single-switch AC-DC converter topology based on the Zeta converter is employed for power factor ...


    By Inderscience Publishers

  • Methodology for calculating the energy consumption of air-conditioner in residential Building of China

    Increasing energy demand for building has made it imperative that energy conservation is an emergency in China. In this paper, calculation methodology on energy performance of residential building envelopes is studied by the Evaluation of Envelope Thermal Performance (EETP) index, the parameters related to EETP indexes are calculated from the eQUEST software. The formulae about energy performance ...


    By Inderscience Publishers

  • Entropy generation minimisation analysis of cross-flow heat exchangers used in indirect evaporative air conditioners

    In this paper, entropy generation in heat exchangers used in Indirect Evaporative Coolers (IDECs) is studied. First, expressions for the rate of entropy generation in tube-type and plate-type cross-flow heat exchangers used as IDECs are obtained. Then, by introducing appropriate geometric constraints and employing thermohydraulic design equations, the variation of the rate of entropy generation ...


    By Inderscience Publishers

  • Leading Manufacturer of Custom-Designed Elevator Control Ports Reports a 97.18% Field Reliability with Our Enclosure Air Conditioners

    Finding a reliable electrical enclosure cooling unit for elevator control systems was a challenge for Motion Control Engineering because of high cooling requirements and condensate disposal problems. With Thermal Edge Narrow Edge Enclosure Air Conditioners, MCE found a solution that is a cost effective alternative to costly custom-made enclosures. Read this case study to find out how Thermal Edge ...


    By Thermal Edge Inc.

  • A PFC–based PMBLDCM drive for air–conditioner using half–bridge buck converter

    A diode bridge fed buck half–bridge DC–DC converter fed from single–phase AC mains is used as a single–stage power factor correction (PFC) converter for feeding a voltage source inverter (VSI) based permanent magnet brushless DC motor (PMBLDCM) drive. The PMBLDCM is used to drive a compressor load of an air conditioner through a three–phase VSI fed from a constant DC voltage. The speed of the ...


    By Inderscience Publishers

  • Application of Computational Fluid Dynamics to flow next to high-rise buildings in Hong Kong due to air-conditioner heat rejection

    This paper presents the results of several studies done for high-rise residential buildings in Hong Kong that involved Computational Fluid Dynamics (CFD) simulation. During summer, a number of Window Air-Conditioners (WACs) could be rejecting condenser heat into a recessed space of these high-rise residential buildings. FLUENT 5.0, a CFD code can be used to predict temperatures and flow field of ...


    By Inderscience Publishers

  • Clearing the air

    Atmospheric chemist Susan Solomon finds hope in past environmental challenges. Written by Jennifer Chu, MIT News Office. You can read the original story in MIT News ...

  • 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. ...


    By Energy Efficiency Markets

  • Why choose an electrostatic, washable air filter?

    When deciding what type of air conditioner or furnace filter to use, you should keep two things in mind: Airflow and Efficiency. In order to work at its optimum level, the a/c or heating unit requires no restriction to air flow. You should choose a filter that has the least effect on airflow, but removes the most dust from the air. ACI’s electrostatic air filters allow the air conditioning ...


    By ACI Manufacturing

  • The Hidden Danger Of Air Quality in Indoor Firing Ranges

    Indoor gun ranges are popular with both professionals who use guns as a part of their job and hobbyists who just enjoy guns and shooting. ...


    By Camfil Ltd

  • COPs, EERs, and SEERs How efficient is your air conditioning system?

    Introduction This note discusses performances of air conditioning systems, including heat pumps and chillers. It describes the efficiencies of systems so you can estimate how much energy a system may use. The discussion applies equally to residential, commercial, and industrial systems. When we talk about the size of an air conditioning system (whether by tons of cooling, BTU/h, ...


    By Power Knot LLC

  • 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

  • TelecityGroup - RQ Box technology secures air conditioning via free cooling in a Data Centre exposed to environmental pollution case study

    The Condorcet Data Centre This next-generation data centre located in northern Paris is managed by TelecityGroup, Europe's leading provider of premium network independent data centres 3,400 sq. meters (36,000 sq. feet) of IT hosting facilities ISO 14001:2004 certifiedCools the technical facilities using direct free cooling in order to help reduce energy ...


    By Alpha MOS Environment

  • Coolerado Corporation case study

    Coolerado uses Weather Analytics’ climate data to demonstrate to clients the energy-efficiency of their air conditioners in places around the globe. Overview Coolerado offers an alternative to conventional air conditioners through unique energy-efficient technology that has won multiple industry awards including R&D Magazine’s “100 Award” and Popular ...


    By Weather Analytics

  • Cost-profit analysis of multilateral recycling system in Asia

    The objective of this study is to clarify quantitatively the driving force of multilateral recycling system in Asia, especially focusing on economic factors. To this end, we proposed a cost-profit analysis model for multilateral recycling system considering the differentials of economic factors between developed and developing countries at first. Based on this model, we conducted cost-profit ...


    By Inderscience Publishers

  • Advanced Voltage Optimsation Technology

    Electric appliances with inductive characteristics, such as refrigerators, air conditioners and compressors are more efficient when the voltage suppliedis regulated and stabilised. This article will explain the physical principles behind voltage reduction on inductive loads, and will include case studies depicting energy savings using powersines comec (a universal energyefficiency controller) in ...


    By PowerSines Ltd.

  • E-waste management

    CO2 or CFC gases are hazardous and usually found more in electrical items like refrigerator, air-conditioners, freezers, etc than in electronic equipment. These bulky items or white goods do not level down to electronic waste recyclers but mostly happens to end at the local kabadiwallas. The kabadiwalas are one of the strong supply management sources in India, so waste is locally collected by ...


    By Eco Recycling Ltd

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