Abstract
In this study, biological exhaust air treatment was combined with a recuperative heat exchanger in one process stage. The aim of this plant development and testing is not only to reduce ammonia from the exhaust air of pig houses but also to recover thermal energy at the same time. This is intended to offset the high operating costs of exhaust air treatment with savings of heating costs in cold seasons and to use the plant more efficiently. This system was tested for the first time under practical conditions in a pig fattening house in southern Germany. Three different assembly situations of the heat exchanger were examined for 13 days each and then compared with each other. The heating performance of the plant is primarily dependent on the outside air temperature and secondarily on the scrubbing water temperature. Depending on the assembly situation of the heat exchanger, an average heating performance of between 6.0 and 10.0 kW was observed; the amount of recovered thermal energy was between 1860 and 3132 kWh. The coefficient of performance (COP) ranked between 7.1 and 11.5. Furthermore, ammonia removal up to 64% was demonstrated. A long-term investigation of the system under practical conditions is recommended to validate the data collected in this study.
Highlights
In order to reduce emissions from animal husbandry, such as particulate matter, ammonia (NH3) and odor, various exhaust air treatment systems (EATS) are used in mechanically ventilated livestock buildings for pigs and poultry in practice [1,2]
A long-term investigation of the system under practical conditions is recommended to validate the data collected in this study
The cold incoming fresh air is preheated by the exchange scrubber, which, on the one hand, has a positive effect on the climate in the animals’ living area
Summary
In order to reduce emissions from animal husbandry, such as particulate matter, ammonia (NH3) and odor, various exhaust air treatment systems (EATS) are used in mechanically ventilated livestock buildings for pigs and poultry in practice [1,2]. EATS in Germany must be designed to treat the total required maximum exhaust air flow according to DIN 18910 [5] (cf [3]). In this context, these systems’ high investment and operating costs lead to the requirement to reduce the total costs
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
