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Homepage>BS Standards>17 METROLOGY AND MEASUREMENT. PHYSICAL PHENOMENA>17.140 Acoustics and acoustic measurements>17.140.20 Noise emitted by machines and equipment>BS 4857-2:1978 Methods for testing and rating terminal reheat units for air distribution systems Acoustic testing and rating
immediate downloadReleased: 1978-08-31
BS 4857-2:1978 Methods for testing and rating terminal reheat units for air distribution systems Acoustic testing and rating

BS 4857-2:1978

Methods for testing and rating terminal reheat units for air distribution systems Acoustic testing and rating

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Standard number:BS 4857-2:1978
Pages:26
Released:1978-08-31
ISBN:0 580 10277 7
Status:Standard
DESCRIPTION

BS 4857-2:1978


This standard BS 4857-2:1978 Methods for testing and rating terminal reheat units for air distribution systems is classified in these ICS categories:
  • 17.140.20 Noise emitted by machines and equipment
  • 91.140.30 Ventilation and air-conditioning systems
  • 97.100.01 Heating appliances in general

This Part of this British Standard deals with methods of acoustic testing and rating of terminal reheat units, defined in Part 1 of the standard, for:

  1. static terminal attenuation;
  2. sound generation, upstream and downstream of the unit;
  3. radiation of sound from the casing.

Methods of testing and rating for static terminal attenuation; sound generation, upstream and downstream of the unit; radiation of sound from the casing.