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ACHAutomated Clearing House
ACHArkansas Children's Hospital (Little Rock, AR)
ACHAir Changes per Hour (ventilation)
ACHAssociation for Computers and the Humanities
ACHAdult Care Home
ACHAnything Can Happen (various meanings)
ACHAnalysis of Competing Hypotheses (intelligence analysis)
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ACHAluminium Chlorohydrate (salts)
ACHAutomotive Components Holdings (various locations)
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ACHArmy Community Hospital
ACHAircraft Hangar (USAF bare base deployable aircraft shelter)
ACHAngeles Crest Highway (California SR2)
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ACHAlice Cook House (Cornell University; New York)
ACHAmerican College of Heraldry
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ACHAttempts per Circuit per Hour
ACHAssociation Coopération Humanitaire (French: Humanitarian Cooperation Association; est. 1992)
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ACHAmerican Clearinghouse
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ACHAssault Craft Helmet (Gentex)
ACHAdler-Coppersmith-Hasner (algorithm)
ACHAntenna Selection Reference Signal Channel
ACHACCS Common Hardware
ACHAverage Call Handle (time; call center metric)
ACHAlpha-Cellulose Hydrolysis
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References in periodicals archive ?
Their work in the public sector and highly respect and talked about capabilities with regards to their approach to partnership working, saw the company appointed by Wolverhampton City Council to deliver what have become two of the UK's first accredited Passivhaus education schemes Oak Meadow and Bushbury Hill Primary Schools; where air leakage levels are just 0.3 air changes per hour, significantly better than the minimum requirements for Passivhaus of 0.6 and far in excess of the current UK Building Regulations.
The bathroom should have a minimum of eight air changes per hour and maybe even ten in the wetroom area.
Grade B can handle aseptic preparation and filling, and operates with a minimum of 40-50 air changes per hour. Grade C and D environments carry out less critical stages of production.
36 HEPA fan filter units were designed to be housed within this large frame to produce 97 air changes per hour at air speeds of 0.5 metres per second.
This design reduces power consumption to fewer than 850 watts per knitting machine and its associated creel and increases return air efficiency substantially to almost an average of 56 air changes per hour in creel area and 36 air changes per hour in knitting machine area, if the volume of return air per machine is about 2700 meter cube per hour which can be generated by fewer than 850 watts of power consumption.
Complete air handling and air conditioning systems are also installed, with HEPA filters, maintaining over 100 air changes per hour. The complete system includes programmable day/night controls to achieve high levels of energy efficiency.
One hundred percent of all air will come from the outside and occupants will benefit from six air changes per hour, in comparison to the industry standard of just two air changes per hour.
The mechanically-ventilated operations hall was designed to achieve three air changes per hour of the 70,000 cubic metre facility.
Because the area is used for food preparation, the project is designed to produce 15 air changes per hour thus allowing the air pressure to be positive within the building.
Originally designed for laboratory and hospital environments, the patented and revolutionary 'CCFT' technology employs up to 6 complete air changes per hour, depending on the level of risk, and ensures all airborne bacteria, moulds and spores are destroyed, airborne chemical compounds (VOC's etc.) are broken down and odours are eliminated.
In a typical building with 4 to 5 air changes per hour, UVC energy can destroy more than F 90 percent of infectious microbes with each air change--reducing them to a level far below what it takes to infect most people.
Active ceiling enclosures are AC-power ready and include a 9-CFM fan with transformer capable of providing more than 100 air changes per hour.--Leviton Voice and Data