Application Study Of Central Heating Cogeneration Based On Absorption Heat Exchange

At present，our country city heating by cogeneration central heating, heatingcogeneration and reasonable use of power in the process of heat, which can not onlyeffectively high quality of city power supply, can also meet the city winter heatingdemand. The Chinese government has been encouraging and supporting cogenerationmode of production. But with the development of the city, every kind of buildingsare increasing at full speed, the winter heating load increase year by year. A heatsource and the network existing city network transport capacity shortage, difficult tomeet the increasing demand for heating. If the new thermotics in or thermal powerplant will bring various environmental pollution problems, the problem ofenvironmental pollution in China is very serious, the state government of newpolluting projects strong intervention. City underground heat pipeline clouds, theground buildings, traffic complex, therefore increase trunk pipe diameter of heatingnetwork transformation is not only a huge investment, but also very cumbersome andcomplex. In view of the above problems, we must seek new methods of increasingthe heating area.In the production process in the thermal power plant, steam turbine exhaustprocess produces waste heat more low grade heat contains a lot of, but in practicalapplication, it is difficult to directly use the heat energy in the. As the circulatingcooling water of power plant, the heat is brought to the cooling tower for cooling,direct emissions into the atmosphere, not only a waste of a lot of heat energy, but alsocaused the loss of a certain amount of soda. If this part of low temperature waste heatrecovery and utilization can be better for the economy, the environment, and even the society as a whole will bring huge benefits. In recent years, many domestic thermalpower plant started to use the absorption of heat recovery power plant waste heat,absorption heat pump cycle cooling water of power plant project has made greatgains in many thermal power plant.Relying on this topic Changchun City in a thermal power plant circulating waterheat recovery project, studied heat problem for the first single effect lithium bromideabsorption type heat pump circulating cooling water of power plant. The first kindlithium bromide single effect absorption heat pump series steam water heatexchanger heating a net return to the network design of heating temperature.Combined with the actual conditions of the power plant, analyzed by thermodynamiccalculation and economy of absorption heat pump heating system, theoretically, thetechnology Recyclable waste heat recycling cooling water from power plant isfeasible, can increase the heating capacity of thermal power plant, and producecertain economic benefits and environmental benefits.