Patent ID: 8322139

Claim:
A condenser used for a steam turbine power plant, comprising: a circulating path through which cooling water taken from a water source flows; a tube nest including a plurality of cooling tubes through which the cooling water coming from the circulating path flow, the tube nest condensing steam supplied from a steam turbine with the cooling water in the plurality of cooling tubes; a discharge path through which the cooling water discharged from the tube nest flows; a bypass tube disposed to bridge between the circulating path and the discharge path; flow rate control means disposed in the bypass tube for controlling the flow rate of the cooling water supplied from the circulating path to the discharge path; a recirculating path disposed to bridge between the discharge path and the circulation path; and boosting means disposed in the recirculating path for controlling the flow rate of the cooling water supplied from the discharge path to the circulating path; wherein, when a water temperature in the water source changes, at least one of the temperature and the flow rate of the cooling water to flow through the tube nest is deviated from the temperature and the flow rate of the cooling water coming from the water source by the flow rate control means and the boosting means, wherein the flow rate at which the cooling water taken from the water source flows through the circulating path is maintained at a predetermined value.