热泵循环技术在热电厂的应用

介绍了热泵技术的原理,并结合某发电厂应用实例,说明了在电厂中可以采用热泵技术,循环水不再全部依靠冷却塔降温,而是部分作为各级热泵的低温热源,提高热电厂额定供热能力,减少了汽轮机的抽汽量,增加汽轮机的发电能力,提高系统整体能效。经过实际运行,各项指标达到了设计要求。热泵循环技术在热电厂中应用前景良好,具有推广价值。

Application of heat pump circulation technique in thermal power plant

With the practice example in one Power Plant,this paper makes a presentation of the heat pump technique principle.It illustrates that the heat pump technique can be applied in the power plant.Instead of solely relying on the cooling tower for cooling,the circulating water could partially serve as low-temperature heat source for various classes of heat pumps to promote the rated heating capacity of the thermal power plant.Then,it could decrease the turbine heat extraction and improve its power generation ability,enhancing the whole system efficiency.All indexes have met the design requirement in actual operation.In brief,there is a prosperous prospect with promotional value for applying the heat pump circulation technique in thermal power plant.