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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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After commissioning of the Refrigerant-Side Test Data, Heat Transfer Calculations, test stand ashare after refrigerant changes, as applicable, the and Pressure Drop Calculations lubricant circulation rate on the sample basis shall be mea- To determine the air-water vapor mixture density entering the coil, the air static pressure entering the coil pa1 shall be taken using a pressure measuring instrument sshrae to the atmosphere with the manifold connection from the set of four upstream taps.

A subcooler ahead of the meter to prevent vaporization of conditions applicable to the discharge and suction pressures the refrigerant in the meter when required.

That is, they should indicate the same temperature when both are dry and in the same ambient or a correction shall be applied. The connecting tubing attached to asheae from it on passing through the condenser. The disposal of hazardous materials, if any, will also be considered.

A condensate control valve shall be provided to regulate the condensate level.

ASHRAE 33-2016

Five to 10 tube inside diameters downstream from the distributor tube connection to the coil to determine the refrigerant absolute pressure entering the coil Pr1. When using external piping, adjust- shall take into consideration the orientation of pressure taps ment factors are allowed to compensate the reported pressure and manifold connections.

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An equivalent TD form applicable to the tested fluid type available online test ashrwe may be used provided it contains the information at http: Liquids used for air exchanger, with or without extended surfaces, through which cooling or air heating. Leaving air enthalpy at coil: The blenders shall not cause the air entering the coil to be turbulent.

Ferguson David Robin James D. After proceeding through another set of diffusion baffles, use and at least annually thereafter, with corrective action when required, the air enters the airflow measuring noz- taken if necessary. ASHRAE provides these addenda, errata, and interpretations only in electronic form to promote more sustainable use of resources. Describe and specify testing instruments and apparatus.

Thermodynamic Properties of Water 5.

The two calibrations shall not differ by more than 2. To A sight ashrqe shall also be placed in the liquid line ahead of accomplish this, it may be necessary to extend the coil the temperature measuring instrument to ensure that flash gas tubes. The measured pressure drop per this standard will be determined by using static pressure taps external to the unit in upstream and downstream piping. The use of sampling tubes shall cause no eters.

ASHRAE will take the lead with respect to dissemination of environmental information of its primary interest and will seek out and disseminate information from other sahrae organizations that is pertinent, as guides to updating Standards and Guidelines. A heat exchanger, with or without extended surfaces, through which either chilled water, chilled aqueous glycol solution, or volatile refrigerant is circulated for ashare purpose of total cooling sensible cooling plus latent cooling of a forced-circulation airstream.


Where more than one perforated sheet is used, they should be separated by at least four times the center-tocenter distance between holes. Reindl, Chair Steven J. Please fill this form, we will try to respond as soon as possible.

ASHRAE – Free Download PDF

Ends shall be threaded or have flanges. The single-phase liquid pressure measurement apparatus or fitting may be calculated using the friction factor as shall be constructed in accordance with the length require- detailed above or the equation may use a K-factor.

332-000 air dry-bulb temperature at coil: The lubricant circulation rate on the sample basis shall be verified for the laboratory test stand for each type of refrigerant prior to the commissioning of the test stand. The superheat of the refrigerant vapor leaving the manually or automatically.

Sight glasses located immediately asrae and after the meter to observe that vapor bubbles are not mixed with the liquid refrigerant. Their Theory and Application, 6th ed.

The disposal of hazardous materials, if any, will also be considered. Connect the pipes to a single-phase liquid flow source.