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换热器表面的微生物污垢问题,严重影响了非清洁水源换热器系统的换热效率和安全.前期研究提出的新型石蜡涂层方式,利用在线融化和凝固石蜡涂层,实现了换热器的在线清洗.石蜡涂层虽然具有一定抑垢效果,但本身也带来相应附加热阻.本研究将抑垢剂苯扎氯铵包埋至石蜡涂层,用于强化涂层的抑垢效果.污垢挂片实验结果显示,包埋苯扎氯铵的石蜡涂层抑垢效果显著增强,有效抵消了涂层附加热阻较大的缺点.相比单独使用的石蜡涂层,包埋苯扎氯铵的石蜡涂层抑垢效果增强79%.相比直接使用苯扎氯铵,包埋的苯扎氯铵作用更针对污垢底层,同样抑垢效果下苯扎氯铵用量仅为直接使用的0.6%.
The problem of microbial fouling on the surface of the heat exchanger seriously affects the heat exchange efficiency and safety of the non-clean water source heat exchanger system.The novel paraffin coating method proposed in the previous research utilizes the online melting and solidifying paraffin coating to realize the heat exchanger Of the online cleaning paraffin coating has a certain scale inhibition effect, but it also brings the corresponding additional thermal resistance.In this study, the scale inhibitor benzalkonium chloride embedded into the paraffin coating, to strengthen the scale inhibition effect of the coating The fouling test results show that the embedding benzalkonium chloride paraffin coating scale inhibition effect is significantly enhanced, effectively offset the coating additional thermal resistance shortcomings.Compared with the paraffin coating alone, embedding benzene bar Compared with the direct use of benzalkonium chloride, the effect of embedded benzalkonium chloride is more on the bottom of the soil, and the amount of benzalkonium chloride used under the same scale inhibition effect is only used directly 0.6%.