In a first embodiment, provides a includes a generator (26) and an absorber (24) absorption chiller, at least a concentrated absorbent solution flowing from the generator (26) to the absorber (24). An independent concentrated absorbent solution stream is conveyed to the surface contact portion (24a) of the absorber (24) and delivered to the container (24C), which may be an absorber tank. The capacity of the refrigerator is controlled by varying the flow ratio of the surface contact portion (24a) of the flow to the absorber (24) and the absorbent solution flowing to the container. A controller (118) regulates the flow ratio of the absorbent solution to obtain the required refrigerating capacity. In the second embodiment, a method of crystallization detection and recovery from crystallization is provided for a two stage absorption chiller (400). The crystallization in the cryogenic heat exchanger (426) is detected by comparing the temperature between the specific absorbent solution streams. Recovery procedures include removal of crystallization and prevention of subsequent recrystallization steps. Finally, in the third embodiment, a control system (500) for controlling an over adjustment of the control system (500) according to the set point input (515) is provided. The control system (500) includes a feedback loop (505), the loop through a summation section (508) and the control system (500) connected; also includes a binomial filter (310), the filter is used for receiving the input point set (515), and the sum Festival (508) for the control system (500) provides a set point filtering output (520). The control system includes providing a filtered setpoint output (520) binomial filter (510), the output is through the summing node (508) to the control system gradually starting reaction. A method of controlling a water refrigeration system by means of a control system (500) is provided to provide a predetermined water supply for a predetermined temperature.
【技术实现步骤摘要】
本专利技术背景本专利技术总体上涉及对吸收式制冷器的改进控制。在第一个实施方案中,本专利技术涉及用于将热量从热负荷排出到一个散热器的吸收式热交换装置,特别涉及一种用于改变吸收式热交换装置的容量的改进方法。在另一种实施方案中,本专利技术涉及一种两级吸收式制冷机,更具体地讲,涉及一种用于检测结晶并在热交换系统中从结晶恢复的控制系统。最后,在第三个实施方案中,本专利技术更具体地涉及一种控制系统,该系统具有一个二项式设定点滤波器,用于消除过调节,而又不会减弱对工艺波动的反应。通过一个制冷回路使用复合的制冷剂循环的吸收式制冷、冷却、热泵、和相关装置是众所周知的。所述制冷回路包括一个发生器、一个冷凝器、一个蒸发器、和一个吸收器。可将多种复合制冷剂系统用于所述装置。其中的两个例子是氨/水系统和溴化锂/水系统。由一个外部能源对发生器中的复合制冷剂和吸收剂溶液加热。所述发生器对该复合溶液加热到足于蒸馏出挥发性更强的制冷剂蒸汽(例如,对于氨/水制冷剂来说为氨蒸汽,而对于溴化锂/水系统来说为水蒸汽),留下挥发性较低的浓缩吸收剂溶液。然后将浓缩吸收剂成分排入所述吸收器。所述冷凝器接收来自所述蒸发器的蒸发性制冷剂,并将其冷凝成液体形式(又被称为冷凝物)。由于所述蒸汽冷凝所释放的热量,被排出到冷却塔、冷却水、某些其它外部散热器、或另一级的制冷装置中。所述蒸发器通过蒸发直接或间接接触所述热负荷的冷凝的液体制冷剂,吸收来自热负荷的热量(即建筑物的空气、冰箱的内容物、冷却水、或该系统被设计用于冷却的其它流体或物体)。因此,所述蒸发器重新蒸发所述挥发性制冷剂。由所述吸收器让离开蒸发器的制 ...
【技术保护点】
一种可变容量吸收式制冷器,包括: A.一个用于产生浓缩吸收剂溶液和制冷剂的发生器; B.一个吸收器,具有一个用于使所述浓缩吸收剂溶液与所述制冷剂接触的表面接触部分; C.一个容器; D.至少一个用于将所述浓缩吸收剂溶液的第一股流体由所述发生器转移到所述吸收器的表面接触部分,并将第二股浓缩吸收剂溶液由所述发生器转移到所述容器的管道;和 E.一个用于改变所述第一和第二股流体的流量比例的流体流量调节器。
【技术特征摘要】
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【专利技术属性】
技术研发人员:L西比克,M贝格特,
申请(专利权)人:气体研究院,
类型:发明
国别省市:US[美国]
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