Potřebujeme váš souhlas k využití jednotlivých dat, aby se vám mimo jiné mohly ukazovat informace týkající se vašich zájmů. Souhlas udělíte kliknutím na tlačítko „OK“.
Standard Test Method for Measuring the Field Performance of Commercial Kitchen Ventilation Systems
Automaticky přeložený název:
Standardní zkušební metoda pro měření výkonnosti oblasti obchodního Kuchyně větracích systémů
NORMA vydána dne 1.10.2012
Označení normy: ASTM F2975-12
Poznámka: NEPLATNÁ
Datum vydání normy: 1.10.2012
Kód zboží: NS-54805
Počet stran: 13
Přibližná hmotnost: 39 g (0.09 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
air flow balancing, air flow testing, capture and containment, commercial kitchen ventilation system, field performance, ICS Number Code 91.140.30 (Ventilation and air-conditioning systems)
Significance and Use | ||||
5.1 Successful kitchen exhaust hood performance requires the complete capture and containment of the effluent plume along the hood’s entire perimeter. Any effluent leakage moving beyond 3 in. from the hood face will be deemed as having escaped from the hood, even if it may appear to be have been drawn back into the hood. If effluent spills from the hood, hot and greasy kitchens may be the result and the cause of the performance failure needs to be determined and corrected. Oftentimes, the exhaust flow rate needs to be increased to achieve proper hood performance for particular field conditions. As a result, the supply air to the kitchen will need to be increased to maintain the air balance. However, drafty room conditions due to incorrectly placed supply diffusers, cross drafts from windows and doors, return and supply at opposite ends of the kitchen, etc. could also severely degrade hood performance. Incorrectly designed supply systems may not be corrected by increasing the exhaust rate and could be corrected in a much more efficient and economical manner, such as by replacing a 4-way diffuser with a 3-way diffuser directed away from the hood. Likewise, if the plume is strongly captured, the hood may be over-exhausting and reducing the exhaust rate could be considered, along with a corresponding reduction of room supply air to maintain the building’s air balance. 5.2 An appropriate airflow balance ensures adequate replacement air for the necessary exhaust conditions and allows the desired air pressure distribution to be maintained. 5.3 Negative air pressure in the kitchen with respect to the adjacent indoor spaces ensures that the air flow is from these spaces into the kitchen so that odors and cooking effluent are contained within the kitchen. However, too great a pressure imbalance will severely degrade hood performance by creating a wind tunnel effect. Negative air pressure in the dining area with respect to the outside is usually an indication that the supply air rate is inadequate and as a result the exhaust air system is not performing as specified. |
||||
1. Scope | ||||
1.1 This test method can be used to measure and validate successful design, installation and commissioning of commercial kitchen HVAC and makeup air systems for specific installations. 1.2 This test method field evaluates commercial kitchen ventilation system airflows and pressures. 1.3 This test method field evaluates visual hood capture and containment performance. 1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are for information only. 1.5 The data generated is specific to the field conditions as installed. 1.6 This test method may involve hazardous materials, gasses (for example, CO) operations, and equipment. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
||||
2. Referenced Documents | ||||
|
Historická
1.11.2013
Historická
1.8.2011
Historická
1.4.2012
Historická
1.8.2013
Historická
1.5.2014
Historická
15.1.2010
Chcete mít jistotu, že používáte pouze platné technické normy?
Nabízíme Vám řešení, které Vám zajistí měsíční přehled o aktuálnosti norem, které používáte.
Chcete vědět více informací? Podívejte se na tuto stránku.
Poslední aktualizace: 03.11.2024 (Počet položek: 2 209 203)
© Copyright 2024 NORMSERVIS s.r.o.