摘要:
The present invention is directed to an apparatus for minimizing power consumption in a cooling system. In one embodiment, the apparatus comprises one or more processors, one or more sensors associated with one or more regulated environments and one or more chillers that regulate temperature of the one or more regulated environments and a storage device, coupled to the one or more processors, storing instructions that when executed by the one or more processors performs a method. The method comprises gathering readings from the one or more sensors, determining a cost and power consumption associated with setting values for a plurality of control variables associated with the one or more chiller plants, selecting values for the control variables with a minimum cost as optimized control variable values and applying the optimized control variable values to the plurality of control variables to minimize power consumption of the cooling system.
摘要:
An air-conditioning control device according to an embodiment controls air conditioning in an air-conditioning zone by using a plurality of types of air conditioners each having a different air supply system. A setting unit sets air-conditioning load distribution of the air conditioners based on optimal load distribution functions generated based on models of the air conditioners so that total energy consumption of the air conditioners is reduced within a range of comfort of the air-conditioning zone set by a user. An output unit outputs, based on the load distribution set by the setting unit, control values for controlling the air conditioners to control devices of the air conditioners.
摘要:
If an operation command is received from any of the indoor units when the initialization of the corresponding electronic expansion valves is not completed. First, initialization is performed on the electronic expansion valve corresponding to the indoor unit which has issued an operation command. When the initialization has been performed on the electronic expansion valves corresponding to all of the indoor units which have issued an operation command, the flow proceeds to a processing step for a compressor. Then, the electronic expansion valves which have been initialized are adjusted to a predetermined operational opening degree. After this step is completed, the electronic expansion vales corresponding indoor units which have issued no operation command and whose initialization has not been completed are initialized and adjusted to a predetermined opening degree. This leads to a reduced loss of time until the compressor is activated after the electronic expansion valves are initialized.
摘要:
An air-conditioning apparatus includes a refrigerant circuit A formed by connecting, with pipes, a compressor 10 configured to compress a heat-source-side refrigerant, a first refrigerant flow switching device 11 configured to switch a circulation path of the heat-source-side refrigerant, a heat-source-side heat exchanger 12 configured to cause the heat-source-side refrigerant to exchange heat, an expansion device 26 configured to regulate a pressure of the heat-source-side refrigerant, and a plurality of intermediate heat exchangers 25 each configured to exchange heat between the heat-source-side refrigerant and a heat medium different from the heat-source-side refrigerant; a heat medium circuit B formed by connecting, with pipes, a plurality of pumps 31 configured to pressurize and circulate the heat medium subjected to heat exchange in the plurality of intermediate heat exchangers 25, a plurality of use-side heat exchangers 35 each configured to exchange heat between the heat medium and air in an air-conditioned space, and a heat-medium flow switching/control device 40 configured to switch which of the heat medium subjected to heat exchange in the plurality of intermediate heat exchangers 25 is to be allowed to flow into and out of each of the use-side heat exchangers 35; and a controller 50 configured to perform processing for controlling the switching performed by the heat-medium flow switching/control device 40, in accordance with a capacity of each of the use-side heat exchangers 35.
摘要:
A drive control device and method for an electric expansion valve is disclosed. In the disclosure, before applying a drive pulse signal corresponding to a rotary pulse number to a motor of the electronic expansion valve, a secondary positioning is performed on a relative position between stator magnetic field of the motor and rotor magnetic field of the motor by applying a holding current of a first duration time to the motor, applying a pulse signal of an additional pulse number to the motor, and applying a holding current of a second duration time to the motor, and a similar secondary positioning operation is also performed on the motor after applying the drive pulse signal corresponding to the rotary pulse number to the motor of the electronic expansion valve, which ensures that the electronic expansion valve operates according to the drive pulse signal corresponding to the rotary pulse number.
摘要:
An air-conditioning control device according to an embodiment controls air conditioning in an air-conditioning zone by using a plurality of types of air conditioners each having a different air supply system. A setting unit sets air-conditioning load distribution of the air conditioners based on optimal load distribution functions generated based on models of the air conditioners so that total energy consumption of the air conditioners is reduced within a range of comfort of the air-conditioning zone set by a user. An output unit outputs, based on the load distribution set by the setting unit, control values for controlling the air conditioners to control devices of the air conditioners.
摘要:
Systems and methods of controlling a heating, ventilating, and air conditioning system are provided that operate according to signals returned from return air temperature sensors as well as the supply air temperature sensors. Using predetermined temperature setpoints, return temperature information, and supply temperature information, the HVAC system is configured to maintain the temperature of a room first, by the use of its cooling valve, and second and only when the capacity of the cooling valve has peaked, by use of the fan. The presently disclosed improved HVAC system operates more efficiently by avoiding unit loading hopping and minimizing power consumption.
摘要:
To provide an air-conditioning apparatus capable of achieving energy saving, a pump control of controlling the operating capacity of a pump 21 is performed such that an opening degree of a heat medium flow control device 25, controlled by a heat-medium-flow-control-device control, approaches a target opening degree, and a refrigeration cycle of a refrigerant circuit is controlled such that the temperature of a heat medium, whose flow rate is controlled by the heat-medium-flow-control-device control and the pump control, approaches a target temperature.
摘要:
An intermediate unit (130) is disposed between an outdoor unit (110) and a plurality of indoor units (120) and is configured and arranged to switch flow of refrigerant. The intermediate unit (130) includes a plurality of first units (71) and a plurality of liquid communicating units (73). The first units (71) are connected to a high-low pressure gas communicating pipe (13) and a suction gas communicating pipe (12), both of which extend from the outdoor unit (110). Every adjacent two of the first units (71) extends approximately in parallel to each other at a predetermined first distance (dl). Each of the liquid communicating units (73) is connected at one end to a liquid communicating pipe (11) extending from the outdoor unit (110), and is connected at the other end to a liquid pipe (LP) extending to each of the indoor units (120). Every adjacent two of the liquid communicating units (73) extends approximately in parallel to each other at the predetermined first distance (dl). The first units (71) and the liquid communicating units (73) are alternately disposed.
摘要:
An air-conditioning apparatus includes a refrigerant circuit A formed by connecting, with pipes, a compressor 10 configured to compress a heat-source-side refrigerant, a first refrigerant flow switching device 11 configured to switch a circulation path of the heat-source-side refrigerant, a heat-source-side heat exchanger 12 configured to cause the heat-source-side refrigerant to exchange heat, an expansion device 26 configured to regulate a pressure of the heat-source-side refrigerant, and a plurality of intermediate heat exchangers 25 each configured to exchange heat between the heat-source-side refrigerant and a heat medium different from the heat-source-side refrigerant; a heat medium circuit B formed by connecting, with pipes, a plurality of pumps 31 configured to pressurize and circulate the heat medium subjected to heat exchange in the plurality of intermediate heat exchangers 25, a plurality of use-side heat exchangers 35 each configured to exchange heat between the heat medium and air in an air-conditioned space, and a heat-medium flow switching/control device 40 configured to switch which of the heat medium subjected to heat exchange in the plurality of intermediate heat exchangers 25 is to be allowed to flow into and out of each of the use-side heat exchangers 35; and a controller 50 configured to perform processing for controlling the switching performed by the heat-medium flow switching/control device 40, in accordance with a capacity of each of the use-side heat exchangers 35.