Question

Q3 Water is pumped between two reservoirs in a pipeline with a system characteristics represented by H 15 +85. Note that H. and are the system head (in meters) and volume flow rate (in m3/s), respectively. Since the operating conditions for the piping system is beyond the limit of a single standard pump, two identical pumps are thus used. The characteristics of a single pump may be approximated by H, 20 10, 100v Air dipam antara dua takungan dalam saluran paip dengan ciri-ciri sistem yang dwakili eleh H 15+ 851 di mana H dan adalah turus sistem (dalam meter) dan kadar aliran isipadu (dalam m/s) Didapati bahawa keadaan operasi untuk sistem perpaipan adalah di luar had suatu pam tunggal. Oleh itu, dua pam yang serupa digonakan. Ciri- ciri pam tunggal boleh dianggarkan oleh H, 20-101 100νg In a piping system, these two pumps can be connected in series or in parallel arrangement. Describe the piping flow demands that require pumps to operate in series and in parallel. Di dalam satu sistem perpaipan, kedua-dua pam boleh disambung secara bersiri atau selari Jelaskan permintaan aliran paip yang memerlukan pam beroperasi dalam susunan bersiri dan selari (20 marks/markah) b] Calculate the flow rate produced when both pumps are running in parallel. Kirakan kadar aliran yang dihasilkan apabila kedua-dua pam disambung secara selari

Answer 1

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