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 Solving the Problem of Heat Transfer of Cooling Shed for Animals
Tác giả hoặc Nhóm tác giả: Thai Ngoc Son, Vo Chi Chinh, Pham Quoc Thang
Nơi đăng: Proceedings of the International Conference on System Science and Engineering 2017 (ICSSE 2017); Số: BMS Part Number: CFP1746J-CDR ISBN: 978-1-5386-3421-9;Từ->đến trang: 658-661;Năm: 2017
Lĩnh vực: Khoa học công nghệ; Loại: Báo cáo; Thể loại: Quốc tế
TÓM TẮT

ABSTRACT
In the summer, the outdoor temperature in the central part of Vietnam can be very high, reaching 34-35°C and even more than 42°C in some places. Hot climate makes a strong influence on animal organism; as a result, it reducesanimal weight and/or quantity of eggs. Therefore, air conditioning is extremely needed in animal industries. There are several ways to cool the temperature, but each has its advantages and disadvantages. We propose to use underground water at the temperature of 24-25°C for this purpose. One of methods of cooling sheds for animals is watering the roof. For calculating the amount of heat from the air inside the animal sheds transferred into the cooling water, we propose to approximatly calculate the amount of heat transferred from the air inside the sheds into the cooling water through corrugated panels of the corrugated iron roof sheets and neglect the influence of the heat transfer on the overlaps of the sheets. It appears that this method may contain errors. The authors solved the issue of cooling animal sheds by watering the roof by analytical method. Specifically, we solved the problem of heat conductivity of the fin having constant cross section along its finite length, wherein two sides of the blades surrounding by various environments. Additionally, thecalculation considered the effect of solar radiation. For that purpose, the authors created a heat balance equation at steady state for any infinitesimal element of blades, after that we solved differential equation. The resulting solution of thespecial case completely coincided with the solution of the classical issue. The authors applied the results for calculatingpractical problems.
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