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公开(公告)号：US20220186944A1
公开(公告)日：2022-06-16
申请号：US17122777
申请日：2020-12-15
摘要： Chiller control systems and methods for chiller control use iterative modeling of cooling towers, heat exchangers, and pumps to determine the feasibility of integrated free cooling and the ability to take advantage of free cooling. The control systems and control methods can further include selecting the parameters for operating in the free cooling or integrated free cooling mode to improve efficiency and/or reduce energy consumption when operating in these modes. The models can have inputs and outputs that feed into one another, and converge at a solution over multiple iterations. The feasibility of integrated free cooling can be based on providing cooling to a cooling load process fluid at a heat exchanger. The availability of free cooling can be based on the cooling provided at the heat exchanger achieving a target temperature for the cooling load process fluid.
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公开(公告)号：US20180224147A1
公开(公告)日：2018-08-09
申请号：US15749614
申请日：2016-08-04
发明人： Lee R. Cline , John A. Murphy
CPC分类号： F24F11/37 , F24F3/0442 , F24F3/06 , F24F11/00 , F24F11/30 , F24F2110/10 , F25B25/005 , F25B41/003 , F25B49/02 , F25B2339/047 , F25B2400/0409 , F25B2400/06 , F25B2400/061 , F25B2400/07 , F25B2600/2501 , F25B2700/21152 , F25B2700/21171 , Y02B30/767
摘要： A chiller plant including at least two chillers operating at different temperatures are disclosed. Process fluid circuits of the chillers can form fluid communication when, for example, one or more of the at least two chillers may fail, so that the other chiller(s) of the at least two chillers may provide backup operation to the failed chiller(s).
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公开(公告)号：US20240110720A1
公开(公告)日：2024-04-04
申请号：US17937088
申请日：2022-09-30
发明人： Ronnie R. Moffitt , Brian J. Fiegen , Lee R. Cline
CPC分类号： F24F11/84 , F24F11/63 , F24F2140/20
摘要： A method is provided for the controlled routing of hydronic flow within a climate control system. The method includes determining a condition type request for a plurality of area zones corresponding to a particular thermal zone. The method further includes determining a supply temperature type associated with at least a supply line of a primary supply loop and a supply line of a secondary supply loop. The supply temperature type is indicative of a thermal transport fluid temperature within the respective supply line. The method further includes providing an actuation signal set to a valve assembly. The actuation signal set is configured to describe a position for each value of the valve assembly and the position for each valve is based on the conditioning type request and the determined supply temperature types.
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公开(公告)号：US20220381525A1
公开(公告)日：2022-12-01
申请号：US17818177
申请日：2022-08-08
IPC分类号： F28F27/00 , F25B25/00 , G05B19/4155
摘要： Chiller control systems and methods for chiller control use iterative modeling of cooling towers, heat exchangers, and pumps to determine the feasibility of integrated free cooling and the ability to take advantage of free cooling. The control systems and control methods can further include selecting the parameters for operating in the free cooling or integrated free cooling mode to improve efficiency and/or reduce energy consumption when operating in these modes. The models can have inputs and outputs that feed into one another, and converge at a solution over multiple iterations. The feasibility of integrated free cooling can be based on providing cooling to a cooling load process fluid at a heat exchanger. The availability of free cooling can be based on the cooling provided at the heat exchanger achieving a target temperature for the cooling load process fluid.
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公开(公告)号：US20210063057A1
公开(公告)日：2021-03-04
申请号：US16559367
申请日：2019-09-03
摘要： Systems, apparatus and methods for efficiently operating a chiller plant while minimizing or eliminating the occurrence of centrifugal compressor surge. Taking into account chiller design specifications and current operating conditions, a compressor lift point at which surge is predicted to occur is established. Minima and maxima for various chiller setpoints that avoid or eliminate the occurrence of compressor surge are imposed on setpoints provided by a conventional optimizing chiller controller. The chiller system is operated in accordance with the resultant anti-surge setpoints. Energy savings is realized by modulating coolant tower flow to enable the compressor to operate at near-surge conditions while preventing the onset of actual surge.
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公开(公告)号：US11408621B2
公开(公告)日：2022-08-09
申请号：US17122777
申请日：2020-12-15
摘要： Chiller control systems and methods for chiller control use iterative modeling of cooling towers, heat exchangers, and pumps to determine the feasibility of integrated free cooling and the ability to take advantage of free cooling. The control systems and control methods can further include selecting the parameters for operating in the free cooling or integrated free cooling mode to improve efficiency and/or reduce energy consumption when operating in these modes. The models can have inputs and outputs that feed into one another, and converge at a solution over multiple iterations. The feasibility of integrated free cooling can be based on providing cooling to a cooling load process fluid at a heat exchanger. The availability of free cooling can be based on the cooling provided at the heat exchanger achieving a target temperature for the cooling load process fluid.
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公开(公告)号：US11248823B2
公开(公告)日：2022-02-15
申请号：US16559367
申请日：2019-09-03
摘要： Systems, apparatus and methods for operating a chiller plant while minimizing or eliminating the occurrence of centrifugal compressor surge. Taking into account chiller design specifications and current operating conditions, a compressor lift point at which surge is predicted to occur is established. Minima and maxima for various chiller setpoints that avoid or eliminate the occurrence of compressor surge are imposed on setpoints provided by a conventional optimizing chiller controller. The chiller system is operated in accordance with the resultant anti-surge setpoints. Coolant tower flow is modulated to enable the compressor to operate at near-surge conditions while preventing the onset of actual surge.
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公开(公告)号：US10767908B2
公开(公告)日：2020-09-08
申请号：US16005174
申请日：2018-06-11
发明人： Lee R. Cline
摘要： A cascade heat recovery system connects an evaporator from a heating unit to a recovery condenser of the cooling unit, where the recovery condenser is different from a cooling condenser of the cooling unit, and/or connects the evaporator of the heating unit to the cooling loop of the cooling unit, for example in fluid communication with the evaporator of the cooling unit. Both configurations allow the heating unit to be isolated or decoupled from the heat rejection circuit on which the cooling condenser runs. The use of either or both configurations, depending on the operating conditions, can use heat rejected by the evaporator of the cooling unit to be available to the heating unit, so as to provide lift to the heating unit and improve its operating efficiency.
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公开(公告)号：US20140262146A1
公开(公告)日：2014-09-18
申请号：US14216419
申请日：2014-03-17
发明人： Lee R. Cline
CPC分类号： F25B7/00 , F24D3/18 , F24D17/02 , F24D2200/12 , F24F2221/54 , F25B6/02 , F25B25/005 , F25B2339/047
摘要： A cascade heat recovery system connects an evaporator from a heating unit to a recovery condenser of the cooling unit, where the recovery condenser is different from a cooling condenser of the cooling unit, and/or connects the evaporator of the heating unit to the cooling loop of the cooling unit, for example in fluid communication with the evaporator of the cooling unit. Both configurations allow the heating unit to be isolated or decoupled from the heat rejection circuit on which the cooling condenser runs. The use of either or both configurations, depending on the operating conditions, can use heat rejected by the evaporator of the cooling unit to be available to the heating unit, so as to provide lift to the heating unit and improve its operating efficiency.
摘要翻译： 级联热回收系统将来自加热单元的蒸发器连接到冷却单元的回收冷凝器，其中回收冷凝器与冷却单元的冷却冷凝器不同，和/或将加热单元的蒸发器连接到冷却回路 的冷却单元，例如与冷却单元的蒸发器流体连通。 两种配置允许加热单元与冷却冷凝器运行的散热回路隔离或解耦。 根据操作条件使用一种或两种配置，可以使用由冷却单元的蒸发器拒绝的热量可用于加热单元，以便提供加热单元的提升并提高其运行效率。
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公开(公告)号：US12092348B2
公开(公告)日：2024-09-17
申请号：US17579216
申请日：2022-01-19
IPC分类号： F25B49/02 , F24F11/46 , F24F11/63 , G05B19/042 , F24F140/20 , F24F140/50
CPC分类号： F24F11/46 , F24F11/63 , F25B49/027 , G05B19/042 , F24F2140/20 , F24F2140/50 , F25B2339/047 , F25B2500/07 , F25B2500/19 , G05B2219/2614
摘要： Systems, apparatus and methods for efficiently operating a chiller plant while minimizing or eliminating the occurrence of centrifugal compressor surge. Taking into account chiller design specifications and current operating conditions, a compressor lift point at which surge is predicted to occur is established. Minima and maxima for various chiller setpoints that avoid or eliminate the occurrence of compressor surge are imposed on setpoints provided by a conventional optimizing chiller controller. The chiller system is operated in accordance with the resultant anti-surge setpoints. Energy savings is realized by modulating coolant tower flow to enable the compressor to operate at near-surge conditions while preventing the onset of actual surge.
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