| 摘要 |
The invention relates to heat-power engineering and can be used in the systems for utilization of heat of smoke gases of gas-consuming boiler units. The heat-utilization unit includes placed in gas duct in sequence in direction of flow of gases heat utilizer of surface type, heater of chemically purified water, heater of raw water and gas heater, placed in the gas duct in sequence in direction of air flow air-heating heat exchanger, contact water-air heat exchanger and air after-heater, water system with closed circulation circuit where in sequence in direction of water flow heat utilizer, contact water-air heat exchanger, pump and air heater heat exchanger are included, and with open water-preparation circuit connected with the inlet line from the water reservoir through heater of raw water and the system of chemical water purification to the section of closed circulation circuit between the heat utilizer and the air-heating heat exchanger, and with the outlet line – from the section of closed circulation circuit between the pump and the air-heating heat exchanger through heating cavity of the heater of chemically purified water to deaerator, the inlet of the gas heater is connected to the section of the closed circulation circuit between the heat utilizer and the contact water-air heat exchanger, and the outlet – to the pallet of the contact water-air heat exchanger. Increase of heat and ecological effectiveness of the unit is achieved. |
