air conditioning Articles

  • The Rationale for Accelerating Regionally Focused Climate Intervention Research

    Abstract Ten years ago, Paul Crutzen asked whether the time had come to consider undertaking research into intentionally intervening in the climate system so that it might be considered a policy option comparable to reducing emissions for limiting human-induced climate change. Crutzen’s article pointed out how little progress had been made in reducing emissions and suggested that ...


    By Climate Institute

  • Learn How to Better Balance Equipment Performance and Worker Safety with Our Latest Application Note

    Do you want to ensure the safety and health of the workers at your warehouse and maximize the performance of the equipment they use? Here at E Instruments, we know that having a successful, and fully-functioning warehouse is dependent on whether or not the equipment is being maximized, and if the workers are working in a healthy environment that encourages productivity. However, we also know all ...

  • Energy Saving in Air Conditioning is a must!

    Energy Efficiency is now a must! Air Conditioning in residential and commercial buildings is the largest single consumer of electricity so tenants and owners are now looking for ways to reduce their air conditioning energy costs. EnviroTech, a company based in the UAE, Oman, KSA and South America with all products Made in England, is ...


    By EnviroTech Limited

  • Air Conditioning That`s Out of This World

    New materials enhance the cooling effects from outer space to reduce energy use in small- to medium-sized buildings Reducing air conditioning energy use by using new materials to enhance the cooling effects from outer space may not be such a far-out idea. In a simulation study using DOE's Energy Plus software and ...


    By US Department of Energy

  • Importance of Inspecting Reservoirs

    Inspecting Reservoirs – what is the importance of them, why they are inspected, and how ROVs help pave the way for low-cost, regular maintenance. What is a Reservoir? Deriving from the French word réservoir meaning “storehouse,” a reservoir is exactly that – a storage place for water. More often than not, these bodies of water are ...


    By Deep Trekker Inc.

  • 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

  • Thermal comfort study of air-conditioned university laboratories

    In tertiary education institutions, good indoor air quality (IAQ) provides a conducive environment for teaching and learning activities. A field study on the environmental conditions and occupants’ comfort was carried out in six laboratories at Universiti Sains Malaysia. The study evaluates the current thermal comfort conditions using objective measurement and subjective assessment. The measured ...


    By Inderscience Publishers

  • Daytime ventilation conditions in Buenos Aires city, Argentina

    From routinely available observational data, the daytime ventilation conditions in Buenos Aires city have been studied. The climatological behaviour was analysed. The study included the effects of local conditions, such as the coastal location, the urban features and the influence of air humidity on the characteristic parameters of the dispersive capability of the atmosphere. The frequencies of ...


    By Inderscience Publishers

  • Effects of meteorological conditions on concentration of air pollutants in Delhi

    Air pollution in Delhi is a serious environmental problem. In this paper, the effects of meteorological conditions on local air quality are quantitatively assessed by determining the relationships between concentrations of Suspended Particulate Matter (SPM), Respirable Suspended Particulate Matter (RSPM), sulphur dioxide (SO2) and nitrogen dioxide (NO2) with meteorological parameters on monthly ...


    By Inderscience Publishers

  • Valves in Water System of Heating Air Condition

    Common valves in water system of heating air condition include gate valve, globe valve and butterfly valve.   Gate vale For its moderate length, rotary adjusting rod and good regulating performance, gate valve is widely utilized in large caliber pipes.   Globe valve Globe valve is suitable for small caliber pipes for its long length, ...

  • Forests health condition is improving

    The trees health condition in Norwegian forests have improved for most of the country. The tendency from previous years are continuing. The exception is the territory Østlandet (south-east of Norway) where there have been a decline for spruce. The national Monitoring Programme for Forest Damages are performed by Skogforsk, NIJOS and ...

  • Healthy conditions in training centre

    The challenge CENFIM’s objective is to educate highly qualified and specialised employees for the metallurgical industry in Portugal. They organise courses of various durations and at various levels. The Portuguese metal industry counts approx. 19,000 companies, employing a total of 190,000 people. In the ...


    By Plymovent Group BV

  • 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

  • Self–tuning fuzzy PID decoupling controller for VAV air–conditioning system

    One of the most important challenges in nonlinear, multi–input and multi–output (MIMO) and time variant systems is designing a controller with acceptable performance. This paper focuses on design a new adaptive fuzzy PID decoupling controller, applied in the VAV air–conditioning system. In this approach, the PID parameters are adjusted by fuzzy rules. Diagonal matrix decoupling method is employed ...


    By Inderscience Publishers

  • Smart operation of air-conditioning (A/C) and lighting systems for national load management

    In the countries of Arabian Peninsula, demand for electric power, primarily controlled by the air-conditioning (A/C) and generally peaking at 15:00 h, is currently growing well over 5% annually. Adaptations of smart operation of A/C and lighting systems in government and institutional buildings that commonly function between 07:00 h and 14:00 h has been evaluated as a technique for national load ...


    By Inderscience Publishers

  • Policy influence of formaldehyde exposure risk in air-conditioned office environment

    Long-term measurement of indoor air quality (IAQ) over a general community could be a good approach to evaluate the influence of policy on pollutant exposure levels. However, this approach requires considerable measurement efforts and in many circumstances an updated data set will not be available. Formaldehyde is an indoor pollutant that presents a health hazard to building occupants in the long ...


    By SAGE Publications

  • The seasonal variation of urban air quality in northern European conditions

    Meteorological conditions in northern Europe vary widely with the seasons. Consequently, the seasonal variation of urban air pollution is, to a large extent, determined by those meteorological variables which are important for air quality. We present first results on the yearly variation of atmospheric stability (and the occurrence of inversion layers), wind velocity, ambient temperature, solar ...


    By Inderscience Publishers

  • 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

  • Model and experimental analysis of the dynamic behaviour of air conditioning plant pipelines

    This paper presents a model to describe the transmission of vibrations through the pipelines of automotive air conditioning plants. It is known that vibration propagating from the compressor to the other system components can affect both acoustical and structural behaviour. In this study a frequency domain description is purposed, using a transfer matrix formulation to study the pipe dynamics. ...


    By Inderscience Publishers

  • Exergetic performance of a cylindrical methane–air microcombustor under various inlet conditions

    The entropy generation analysis is performed on a methane–air cylindrical microcombustor. The combustor is studied under different fuel–air equivalence ratios and two different inlet velocities. The results reveal that entropy generation due to heat transfer has the highest contribution to the total exergy destruction. Besides, the chemical and mixing entropy generations have the next greatest ...


    By Inderscience Publishers

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