为满足用户夏季制冷冬季供热的多目标需求,本文提出了一种适用于中低温余热的新型冷电/热电联产系统.考虑经济收益,定义了系统在冷电联产和热电联产两种工作模式下的循环总效率,并以之为目标函数,采用蚁群优化算法,针对系统的关键运行参数,分别进行了自编程优化计算.结果表明:新系统在冷电联产和热电联产时,最优摩尔浓度分别为0.525和0.500,循环总效率分别为19.9％和20.0％;在相同余热工况下,与传统系统或已有联产系统相比,新系统循环总效率更高,是一种适用于低品位热源的多目标能源供应形式.
To meet the multi-objective demand of refrigerating in summer or heating in winter,a novel power/refrigeration or power/heat combined cycle for mid-low-temperature waste heat recovery was proposed in this paper.With the consideration of the economic benefit,the gross cycle efficiency was defined for the novel cycle under the power/refrigeration combined condition or the power/heat combined condition respectively.Several key operating parameters were optimized by using an ant colony algorithm under the above-mentioned two working conditions.The results show that the best molarity and the gross efficiency of the cycle are 0.525 and 19.9％ for the power/refrigeration combined condition respectively,while they are 0.500 and 20.0％ for the power/heat combined condition.Compared with other traditional cycles or existing combined cycles under the same working condition,the proposed cycle has a higher gross efficiency.Thus,the novel combined cycle is an effective multi-objective energy supply form for low grade heat resources.
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