ASHRAE 33-2000 PDF

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Operations Manual, Section 4, STEP , Applicants shall submit the following documentation to. AHRI: •. Coil physical data per ASHRAE 33 (refer to Section );. ASHRAE Methods Of Testing Forced Circulation Air Cooling And Air Heating Coils. Be notified when this Standard is updated or amended – Add to. ANSI/ASHRAE Standard (Supersedes ANSI/ASHRAE Standard ) Methods of Testing Forced-Circulation Air-Cooling and Air-Heating Coils.

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Packages Using the Vapor Compression Cycle. If necessary, superheating shall be accomplished by any suitable heating means or by throttling.

ASHRAE 33-2016

Harrold, Vice-Chair Julie M. When sampling tubes are used, it is not necessary to restrict the mixing chamber cross-sectional area. Flexible hose is prohibited between the unit connections and the pressure taps.

The airflow through this appa- 6.

The air dry-bulb temperature measuring instrument shall be mounted upstream or to one side of the air wet-bulb temperature measuring instrument so that its reading will not be influenced by evaporation of moisture from the wet bulb. Those recorded during the period of the test. The average subcooled refrigerant liquid temperature entering liquid control device during any test shall not deviate more than 0.

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ASHRAE – Free Download PDF

The purpose of this annex is to provide a method for ver- C2. The air then leaves the mixing chamber through a neglected.

Single-phase liquid temperature entering the coil pressure k. Reindl, Chair Steven J. The connecting piping shall be the aahrae size as the coil supply and return 7.

Sight glasses located immediately before and after the the variations over this range. To determine the air-water vapor mixture den- also be measured using a grid of evenly spaced RTDs or by sity entering the nozzle, the air static pressure entering the using sampling tubes in an unrestricted opening. A sshrae exchanger, with or without extended surfaces, through which either hot water, hot aqueous glycol solution, or steam is circulated for the purpose of sensible heating of a forced-circulation airstream.

The con- tank having sufficient capacity to accumulate the flow for at necting pipes shall be the same size as the coil supply and least two minutes awhrae shall be located so that the liquid leav- return connections. No individual entering air wet-bulb temperature reading for a test shall vary by more 33-200 0.

The steam pressure shall not vary more than 1. Volatile refrigerant evaporating coils: Psaverage air humidity ratio Wmand average air drybulb temperature tmdb.

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Two different petcock air vent hole diameters Dv shall be used based on the average heating capacities. Vallort, CO Stephanie C. Liquid-vapor mixtures used 3. Steam distributing tube type 4.

See Dimension L, Zshrae 3. Liquids used for air cooling or air heating. Thermodynamic Properties of Water 5. The piping loss shall be determined by calibration of the measurement apparatus. A heat exchanger, with or without extended surfaces, through which either chilled water, chilled aqueous glycol solution, or volatile refrigerant is circulated for the purpose of total cooling sensible cooling plus latent cooling of a forced-circulation airstream.

The superheat of the refrigerant vapor leaving the manually or automatically. Crane Technical Paper No. Selected Standards and Guidelines are also offered in redline versions that indicate the changes made between the active Standard or Guideline and its previous version. The condensate specific heat at constant pressure should be evaluated at the leaving air wet-bulb temperature. This is a asjrae annex and is part 33-000 the standard.

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