Measurement Campaign on Ammonia Emissions from Traditional Naturally Ventilated Dairy Barns

Arnout Declerck; Kobe Coorevits; Maria Laanen; Eva Brusselman

Measurement Campaign on Ammonia Emissions from Traditional Naturally Ventilated Dairy Barns

Vertaalde titel van de bijdrage: Meetcampagne van ammoniak emissies uit natuurlijk geventileerde melkveestallen

Technologie en Voeding

Onderzoeksoutput: Bijdrage aan congres › C3: Congres - Meeting abstract › peer review

Uittreksel

In opdracht van het Departement Omgeving van de Vlaamse Overheid wordt een meetcampagne uitgevoerd om de ammoniakemissiefactor voor een traditionele melkveestal te bepalen. Emissiemetingen worden uitgevoerd op vier stallen verspreid over Vlaanderen, met 95 tot 160 dieren.

Er wordt gebruik gemaakt van een nieuw ontwikkelde emissiemeetmethode die gebaseerd is op windsnelheidsmetingen voor het bepalen van ventilatiesnelheden. De stallen zijn uitgerust met ongeveer 20 ultrasone anemometers (UA) die gegevens verzamelen met een bemonsteringsfrequentie van 1 minuut. De snelheid en windrichting die door deze UA's worden gemeten, in combinatie met de afmetingen van de stalopeningen (ongeveer Hoogte: 3 m x Lengte: 40 m) worden gebruikt om de luchtstroomsnelheid door de stalopeningen te bepalen. Om de emissies te bepalen, worden de ammoniakconcentraties op 6 locaties gemeten met behulp van bemonsteringslijnen. Twee bemonsteringslijnen bevinden zich buiten de stallen (zowel aan de NO- als aan de ZW-zijde van de stal) en worden gebruikt om concentraties in de binnenkomende lucht te meten. Binnen in de stal bevinden zich twee bemonsteringslijnen in de nok (één direct onder de nok, de andere 3 meter onder de nok) en twee op het bovenste deel van de ventilatieopeningen (dus één aan de NO- en één aan de ZW-zijde). Deze opstelling maakt concentratiemetingen van ammoniak (en methaan) mogelijk waar de lucht de stal verlaat. Een multiplexer wordt gebruikt om te schakelen tussen de zes kanalen en de centrale analyser (Picarro of Axetris) te voeden met het gas dat op deze locaties is bemonsterd. Dit maakt de berekening van uurlijkse emissiewaarden mogelijk.

Het einde van de meetcampagne is voorzien in september 2024. Voorlopige resultaten worden getoond, verschillen tussen stallen worden besproken.

Vertaalde titel van de bijdrage	Meetcampagne van ammoniak emissies uit natuurlijk geventileerde melkveestallen
Oorspronkelijke taal	Engels
Publicatiestatus	Gepubliceerd - 26-sep.-2024
Evenement	Emili Conference 2024: International Symposium on Gas and Dust Emissions from Livestock - Universitat Politécnica de València, Valencia, Spanje Duur: 24-sep.-2024 → 26-sep.-2024 Congresnummer: 5th edition https://emiliconference.com/

Congres

Congres	Emili Conference 2024
Land/Regio	Spanje
Stad	Valencia
Periode	24/09/24 → 26/09/24
Internet adres	https://emiliconference.com/

Trefwoorden

T270-milieutechnologie
Emissies
Methaan
Ammoniak
Natuurlijk geventileerd
melkvee

LNV MEETPROGRAMMA: Meetprogramma methaan en ammoniak – ontwikkeling meetmethoden stalemissies
Brusselman, E. (Onderzoeker), Vangeyte, J. (Projectverantwoordelijke), Verfaillie, A. (Projectbegeleider), Plant, L. (Onderzoeker), Roelens, S. (Onderzoeker), Coppens, B. (Onderzoeker), Grauls, W. (Onderzoeker), Coppens, K. (Onderzoeker), Declerck, A. (Projectbegeleider), Poelman, M. (Onderzoeker), Peeters, Q. (Onderzoeker), Van Zwynsvoorde, F. (Voormalig Onderzoeker), Coorevits, K. (Onderzoeker) & Roggeman, T. (Voormalig Onderzoeker)
1/09/22 → 31/12/25
Project: Onderzoek

Dit citeren

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title = "Measurement Campaign on Ammonia Emissions from Traditional Naturally Ventilated Dairy Barns",

abstract = "On behalf of Flanders Environmental Department, a measuring campaign is performed to determine the ammonia emission factor for a traditional dairy barn. Emission measurements are being performed on four barns spread throughout Flanders, housing 95 to 160 animals. A newly developed emission measuring method is used which is based on wind speed measurements for the determination of ventilation rates. The barns are equipped with about 20 ultrasonic anemometers (UA) collecting data at a sampling frequency of 1 minute. The velocity and wind direction measured by these UA{\textquoteright}s, in combination with the dimensions of the barn openings (roughly Height:3 m x Length:40 m) are used to determine the air flow rate through the barn openings. In order to determine emissions, the ammonia concentrations are measured at 6 locations using sampling lines. Two sampling lines are located outside the barns (at both NE and SW side of the barn) and used to measure concentrations in the incoming air. Inside the barn, two sampling lines are located at the ridge (one directly at the ridge, the other 3 meters below the ridge) and two at the upper part of the ventilation openings (thus one at NE and one at SW side). This set-up enables concentration measurements of ammonia (and methane) where the air is leaving the barn. A multisampler is used to switch between the six channels and feed the central analyser (Picarro or Axetris) with the gas sampled at these locations. This enables the calculation of hourly emission values. The end of the measuring campaign is foreseen in September 2024. Preliminary results will be shown, differences between barns will be discussed. ",

keywords = "T270-environmental-technology, Emissies, Methaan, Ammoniak, Natuurlijk geventileerd, melkvee",

author = "Arnout Declerck and Kobe Coorevits and Maria Laanen and Eva Brusselman",

year = "2024",

month = sep,

day = "26",

language = "English",

note = "Emili Conference 2024 ; Conference date: 24-09-2024 Through 26-09-2024",

url = "https://emiliconference.com/",

}

TY - CONF

T1 - Measurement Campaign on Ammonia Emissions from Traditional Naturally Ventilated Dairy Barns

AU - Declerck, Arnout

AU - Coorevits, Kobe

AU - Laanen, Maria

AU - Brusselman, Eva

N1 - Conference code: 5th edition

PY - 2024/9/26

Y1 - 2024/9/26

N2 - On behalf of Flanders Environmental Department, a measuring campaign is performed to determine the ammonia emission factor for a traditional dairy barn. Emission measurements are being performed on four barns spread throughout Flanders, housing 95 to 160 animals. A newly developed emission measuring method is used which is based on wind speed measurements for the determination of ventilation rates. The barns are equipped with about 20 ultrasonic anemometers (UA) collecting data at a sampling frequency of 1 minute. The velocity and wind direction measured by these UA’s, in combination with the dimensions of the barn openings (roughly Height:3 m x Length:40 m) are used to determine the air flow rate through the barn openings. In order to determine emissions, the ammonia concentrations are measured at 6 locations using sampling lines. Two sampling lines are located outside the barns (at both NE and SW side of the barn) and used to measure concentrations in the incoming air. Inside the barn, two sampling lines are located at the ridge (one directly at the ridge, the other 3 meters below the ridge) and two at the upper part of the ventilation openings (thus one at NE and one at SW side). This set-up enables concentration measurements of ammonia (and methane) where the air is leaving the barn. A multisampler is used to switch between the six channels and feed the central analyser (Picarro or Axetris) with the gas sampled at these locations. This enables the calculation of hourly emission values. The end of the measuring campaign is foreseen in September 2024. Preliminary results will be shown, differences between barns will be discussed.

AB - On behalf of Flanders Environmental Department, a measuring campaign is performed to determine the ammonia emission factor for a traditional dairy barn. Emission measurements are being performed on four barns spread throughout Flanders, housing 95 to 160 animals. A newly developed emission measuring method is used which is based on wind speed measurements for the determination of ventilation rates. The barns are equipped with about 20 ultrasonic anemometers (UA) collecting data at a sampling frequency of 1 minute. The velocity and wind direction measured by these UA’s, in combination with the dimensions of the barn openings (roughly Height:3 m x Length:40 m) are used to determine the air flow rate through the barn openings. In order to determine emissions, the ammonia concentrations are measured at 6 locations using sampling lines. Two sampling lines are located outside the barns (at both NE and SW side of the barn) and used to measure concentrations in the incoming air. Inside the barn, two sampling lines are located at the ridge (one directly at the ridge, the other 3 meters below the ridge) and two at the upper part of the ventilation openings (thus one at NE and one at SW side). This set-up enables concentration measurements of ammonia (and methane) where the air is leaving the barn. A multisampler is used to switch between the six channels and feed the central analyser (Picarro or Axetris) with the gas sampled at these locations. This enables the calculation of hourly emission values. The end of the measuring campaign is foreseen in September 2024. Preliminary results will be shown, differences between barns will be discussed.

KW - T270-environmental-technology

KW - Emissies

KW - Methaan

KW - Ammoniak

KW - Natuurlijk geventileerd

KW - melkvee

M3 - C3: Conference - meeting abstract

T2 - Emili Conference 2024

Y2 - 24 September 2024 through 26 September 2024

ER -

Measurement Campaign on Ammonia Emissions from Traditional Naturally Ventilated Dairy Barns

Uittreksel

Congres

Trefwoorden

Vingerafdruk

Projecten

LNV MEETPROGRAMMA: Meetprogramma methaan en ammoniak – ontwikkeling meetmethoden stalemissies

Dit citeren