【Daily Topic】【HVAC Version 20160827】
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Participation reward: 2 Wealth. Reward for the correct answer: 9 wealth. For a directly connected hot water heating system equipped with mixed water pumps, if the designed supply and return water temperatures in the network are 130/70°C, and the designed supply and return water temperatures for the heating users are 95/70°C, with a network flow rate sufficient to meet the heating load being 100 t/h, then the amount of return water drawn from the secondary network is ( ). A. 42t/h B. 58t/h C. 140t/h D. 240t/h Correct answer: C
For a directly connected hot water heating system equipped with mixed-flow pumps, if the designed supply and return water temperatures for the network are 130/70°C, and the designed supply and return water temperatures for the heating users are 95/70°C, with a network flow rate of 100 t/h to meet the heating load requirements, then the amount of return water drawn from the secondary network is (C). A. 42t/h B. 58t/h C. 140t/h D. 240t/h