Guodian Jiangnan Thermal Power Co., Ltd. is located in Jilin City. It was completed in 2011 and has been in trial operation for nearly a year. The installed capacity is 330MW × 2, the designed heating area is 10.6 million square meters, and the long-term planned heating area is 12 million square meters. With the rapid development of cities, the actual heating area required soon exceeds the design heating capacity of the power plant. If the heating area continues to increase, the thermal energy output of the power plant will be insufficient. At present, the waste heat lost to the atmosphere from the two cooling towers of the power plant in winter is about 452MW. The steam from the existing heating system is used as the driving energy, and all is recycled through absorption heat pump technology. Theoretically, the maximum heating area will be increased by 9 million square meters. At the same time, due to the recovery of waste heat, heat loss is reduced and coal utilization is improved. On the one hand, there is a huge heating gap due to the rapid development of cities. On the other hand, the heat from power plant cooling towers is lost in vain. However, there are mature technologies that can use this waste heat for heating. The waste heat from the cooling tower is used for building heating. For the local government, it reduces the boiler capacity, reduces coal consumption, and reduces the emission of harmful gases. It is of great help in completing regional energy-saving indicators; for the local people, it can ensure Heating, life is guaranteed, and at the same time, reducing coal consumption will greatly improve the local atmospheric environment; for thermal power plants, without increasing coal consumption, the heating capacity is increased and operating costs are reduced. The government, the people and the power plant will all benefit from waste heat recovery and utilization transformation. This is the background for Jiangnan Thermal Power Plant to propose energy-saving transformation. Necessity of project) With the rapid development of cities, there is a large gap in heating area, which exceeds the original heating design capacity. Enterprises with heating potential need to carry out energy-saving renovations to tap their potential and meet the needs of urban development. ) The waste heat from the cooling tower of the thermal power plant is lost in vain and is recovered and used for heating, which reduces the comprehensive coal consumption of the power plant, increases the heating capacity of the power plant, and reduces the emissions of regional carbon dioxide and other harmful gases and dust. It achieves multiple benefits. ) The use of absorption heat pumps to extract waste heat for heating is a very mature technology. ) After on-site inspection and demonstration, Jiangnan Power Plant fully meets the construction conditions for energy-saving transformation. ) Energy-saving companies are willing to invest in construction in the form of energy management contracts. There is no need for power plants to raise funds, and the risks are borne by the energy-saving companies. The power plant does not bear risks, but participates in energy saving revenue sharing. The main basis, process and conclusion of the investigation The main basis of the investigation: power plant heating design parameters, actual operating parameters and heating area and indicators in the 2011-2012 heating season, heating metering and charging, heating water flow, temperature difference, steam pressure and flow records Table, power plant main equipment nameplate parameters, etc., cooling tower circulating water volume and temperature difference, etc.