Nội dung được dịch bởi AI, chỉ mang tính chất tham khảo
Mô hình hóa quá trình vận chuyển chất hòa tan từ các nhà máy nhiệt điện đến lớp biên khí quyển
Tóm tắt
Hiện nay, có xu hướng gia tăng số lượng nhà máy nhiệt điện (NMD); xu hướng này có thể liên quan đến sự phát triển công nghiệp và sự gia tăng tiêu thụ năng lượng. Bài báo này thảo luận về mô phỏng số quá trình di chuyển ô nhiễm từ hoạt động của NMD và nghiên cứu mức độ tập trung ô nhiễm ở các khoảng cách khác nhau từ nguồn phát thải trong điều kiện khí quyển thực tế. Việc kiểm nghiệm thuật toán số và mô hình toán học được thực hiện thông qua các bài toán thử nghiệm 2D và 3D. Các giá trị tính toán thu được đã được so sánh với các giá trị đo thực tế và các giá trị tính toán của các tác giả khác. Ngoài ra, việc phân bố ô nhiễm trong trường hợp 3D đã được nghiên cứu trên một kích thước vật lý thực tế. Nhà máy nhiệt điện đốt than Ekibastuz TPP-1 đã được lấy làm ví dụ thực tế. Một đặc điểm nổi bật của NMD này là ô nhiễm được phát thải từ hai ống khói có chiều cao khác nhau ($$H_{H} = 330$$ và $$H_{L} = 300$$ m). Các giá trị thu được cho thấy rằng, do sự khác biệt về chiều cao của ống khói ($$H_{H} - H_{L} = 30$$ m), nồng độ ô nhiễm từ ống khói cao hơn ($$H_{H} = 330$$ m) giảm xuống xa hơn từ nguồn phát thải so với ống khói thấp hơn ($$H_{L} = 300$$ m) (2160 và 1970 m, tương ứng). Từ các dữ liệu thu được từ việc tính toán, có thể khẳng định rằng việc xây dựng các ống khói cao hơn làm giảm tác động có hại của khí thải đối với môi trường. Ngoài ra, các kết quả thu được sẽ giúp dự đoán khoảng cách an toàn và tối ưu từ các thành phố hoặc khu dân cư trong quá trình xây dựng các nhà máy nhiệt điện mới.
Từ khóa
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