Liquid desiccant systems for cooling applications in broilers farms in humid subtropical climatesShow others and affiliations
2022 (English)In: Sustainable Energy Technologies and Assessments, ISSN 2213-1388, E-ISSN 2213-1396, Vol. 51, article id 101902Article in journal (Refereed) Published
Abstract [en]
This paper intends to numerically analyse the performance of liquid desiccant systems on the supply air conditions for closed poultry barns. A commercially available evaporative cooler for poultry barns was modified into a desiccant dehumidifier by circulating desiccant solutions of LiCl-H2O and CaCl2-H2O instead of water. Ambient air conditions for one of humid and subtropical climates were simulated based on an ∊-NTU effectiveness model for an externally cooled liquid desiccant dehumidifier. Also, a distinctive temperature-humidity index (THI) was implemented to study the environmental thermal conditions that the poultry were subjected to. Concerning the thermal comfort for broilers, the results show that conventional direct evaporative cooling systems are not feasible when the ambient air is near saturation. The THI values for ambient and direct evaporative cooler were positioned mainly in the severe heat stress region, with THI value in the range of 80 to 82, and most air outlet conditions were near saturation. The numerical results for the liquid desiccant systems show a consistent reduction in humidity ratio and air dry-bulb temperature. The assessment of air outlet temperature and humidity in terms of THI values was shifted out of the emergency and danger zone with a preference for LiCl solution.
Place, publisher, year, edition, pages
Elsevier Ltd , 2022. Vol. 51, article id 101902
Keywords [en]
Effectiveness model, Evaporative cooling, Liquid desiccant, Poultry farm, Temperature-humidity index, Climate models, Driers (materials), Evaporation, Evaporative cooling systems, Humidity control, Liquids, Lithium compounds, Tropics, Condition, Desiccant dehumidifier, Effectiveness models, Index values, Liquid desiccant system, Poultry farms, Subtropical climates, Temperature humidity index, Chlorine compounds
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-56873DOI: 10.1016/j.seta.2021.101902ISI: 000789646300001Scopus ID: 2-s2.0-85121930201OAI: oai:DiVA.org:mdh-56873DiVA, id: diva2:1626813
2022-01-122022-01-122022-06-22Bibliographically approved