ASHRAE standards

Thermal comfort may be defined as "that condition of mind in which satisfaction is expressed with the thermal environment" (4). It is thus defined by a statistically vaUd sample of people under very specific and controlled conditions. No single environment is satisfactory for everybody, even if all wear identical clothing and perform the same activity. The comfort zone specified in ASHRAE Standard 55 (5) is based on 90% acceptance, or 10% dissatisfied. 

ASHRAE Standards, American Society of Heating, Refrigerating, and Air Conditioning Engineers, Inc., Publications Department, Atlanta, Ga. Standard 55, 1981. Standards are upgraded on a regular basis. 

E. I. DuPont deNemours and Company website, Physical properties and ASHRAE standard 34 classification of SUVA refrigerants. ... 

A.SHRAE (1966). ASHRAE Standard 55-66 Thermal Environnienta) Condition. tor Human Occupancy. American Society of Heating Refrigeration and Air-Conditioning Engineers,. Atlanta. 

ASHRAE Standard 5.5-92. Thermal environmetit conditions for human occupancy,. ASHRAE. New York, 1992. 

In the ASHRAE standard the fume cupboard performance is summarized by expressions of the following type ... 

ASHRAE Standard, BSR/ASHRAE 34-1989R First Public Draft, March 1991, Amencan Society of Heatmg, Refngeration, and Air Conditioning Engmes... 

ASHRAE Standard 90.2-1993 Low Rise Residential Updated low-rise residential standard with more stringent provisions. 

A recent data communications protocol for Building Automation and Control Networks (BACnet), ASHRAE Standard 135-1995, is an important step to ensure that controllers made by different manufacturers can communicate with each other in a simple way, avoiding the expense of additional interface hardware and communication software. 

ANSI/ASHRAE Standard 34-1992, Number Designation and Safety Classification of Refrigerants ... 

Toxicity is referenced to the Threshold Limit Value — Time Weighted Average established for each refrigerant. This is defined in ASHRAE Standard 15-1994 as (refer to the manufacturer s product data for more complete detail) ... 

ANSI/ASHRAE Standard 15-1994, Safety Code for Mechanical Refrigeration, should be studied, examined, and complied with by the design engineer. 

Quantities are to be used only in conjunction with Section 7 of ASHRAE Standard 15-1994. The basis for the values shown in this table is a single event in which a complete discharge of any refrigerant system into the occupied space occurs. The quantity of refrigerant is the most restrictive of a minimum oxygen concentration of 19.5% or as follows ... 

Comparison of Safety Group Classifications in ASHRAE Standard 34-1989 and ASHRAE Standard 34-1992... 

Refer to Tables 11-4 and 11-5 and the ANSI/ASHRAE Standards 15-1994 and ANSI/ASHRAE 34-1992, latest editions. Also refer to the discussion under Process Perfor-mants—Refrigerants, earlier in this chapter. 

The catalogue-rated cooling capacity of a room air-conditioner, if not qualified, will be based on ASHRAE Standard 16-1983. This specifies test conditions of air onto the evaporator at 80°F dry bulb, 50% relative humidity (26.7°C, 49.1% saturation), and air onto the condenser at 95°F dry bulb, 75°F wet bulb (35°C and 23.9°C). The original basis for this specification was the ambient condition prevailing in the mass-market area of the USA. 

For these units, British Standard 2582 Part 1, 1982 gives three sets of alternative rating conditions, corresponding to the ASHRAE Standard, for tropical, arid and temperate ambients. They are ... 

Ashing, recovery of silver via, 22 653 Ash melting point, coal, 6 727, 781-782 Ash properties, of coals, 12 324t ASHRAE Standard 55 thermal comfort guidelines, 1 818... 

ASHRAE Standard 62, Ventilation for Acceptable Indoor Air Quality, 1 819,... 

H ASHRAE standards can be filled in instead, fh ASHRAE indoor exposure guideline (24-hr average)... 

ASHRAE (2004) ASHRAE Standard Ventilation and Acceptable Indoor Air Quality in Low Rise Residential Buildings, ANSI/ASHRAE Standard 62.2-2004, ASHRAE, Atlanta, GA 30329, USA. 

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