公开(公告)号：US20150184885A1

公开(公告)日：2015-07-02

申请号：US14419822

申请日：2013-07-12

Applicant: Danfoss A/S

Inventor： Jan Prins

IPC: F24F11/06 ,  F24F3/06 ,  F25B25/00 ,  F25B49/02

CPC classification number: F25B25/005 ,  F24F3/06 ,  F24F11/63 ,  F24F11/83 ,  F24F11/85 ,  F25B49/02 ,  F25B2500/19 ,  F25B2600/0253 ,  F25B2600/13 ,  F25B2700/21172 ,  F25B2700/21173 ,  G05D23/1919 ,  Y02B30/741 ,  Y02B30/745

Abstract: A method for controlling a chiller system, the chiller system comprising a primary side in the form of a vapour compression system, and a secondary side, is disclosed. The secondary side comprises a variable speed pump for providing a secondary fluid flow through the evaporator of the primary side in such a manner that heat exchange takes place between refrigerant of the primary side and fluid of the secondary side in the evaporator, the secondary side further comprising a temperature sensor arranged in the secondary fluid flow. The method comprises the steps of monitoring a temperature of the secondary fluid flow by means of the temperature sensor, and controlling the compressor capacity and the speed of the variable speed pump on the basis of the monitored temperature, and in order to obtain a predetermined setpoint temperature, in such a manner that the closed loop gain of the chiller system, K=Kp·Ke, where Kp is the gain of the compressor capacity controller and Ke is the gain of the evaporator, is kept substantially constant.

Abstract translation: 公开了一种用于控制冷却器系统的方法，所述冷却器系统包括蒸气压缩系统形式的初级侧和次级侧。 次级侧包括变速泵，用于提供通过初级侧的蒸发器的次级流体流，使得在初级侧的制冷剂和蒸发器中次级侧的流体之间进行热交换，次级侧进一步 包括布置在次级流体流中的温度传感器。 该方法包括以下步骤：通过温度传感器监测二次流体流的温度，并且基于所监视的温度控制变速泵的压缩机容量和速度，并且为了获得预定的设定值 温度，使得冷却器系统的闭环增益K = Kp·Ke，其中Kp是压缩机容量控制器的增益和Ke是蒸发器的增益，其保持基本上恒定。