1. Can the energy removed in a power plant condenser be useful?
2. If the district heating system (see Fig. 1.1) should supply hot water at 90?C, what is the lowest possible condenser pressure with water as the working substance?
![628_ed8209d1-5863-4ed4-b577-d237461f14a5.png](https://secure.tutorsglobe.com/CMSImages/628_ed8209d1-5863-4ed4-b577-d237461f14a5.png)
3. What is the mass flow rate through the condensate pump in Fig. 9.14?
![1418_c6e8bee9-e3d9-4b67-a1d6-c41860c44df8.png](https://secure.tutorsglobe.com/CMSImages/1418_c6e8bee9-e3d9-4b67-a1d6-c41860c44df8.png)