Abstract: The present disclosure provides a control specification visualization program and a control specification visualization method for improving work efficiency when designing a plurality of processes to be executed in controlled devices. The control specification visualization program causes a computer to execute an input process for inputting processing contents of a plurality of processes to be executed in controlled devices, and a visualization process for visualizing a control specification by analyzing the processing contents of the plurality of processes. The visualization process visualizes the control specification by analyzing the processing contents of the plurality of processes based on at least any of operation control modes, a control operation range, input/output items, or meanings/purposes. The operation control modes, the control operation range, the input/output items, and the meanings/purposes are written in the processing contents of the plurality of processes.

Abstract: The present disclosure provides a process execution order determining program and a process execution order determining method for supporting work in determining the execution order of a plurality of processes when designing the plurality of processes to be executed in controlled devices. The process execution order determining program causes a computer to execute a decision process for determining an execution order of a plurality of processes to be executed in controlled devices; and a first determination process for monitoring elements that appear in a connection path formed in the decision process, and determining whether same elements appear in the connection path.

Abstract: The present disclosure provides a control specification visualization program and a control specification visualization method for improving work efficiency when designing a plurality of processes to be executed in controlled devices. The control specification visualization program causes a computer to execute an input process for inputting processing contents of a plurality of processes to be executed in controlled devices, and a visualization process for visualizing a control specification by analyzing the processing contents of the plurality of processes. The visualization process visualizes the control specification by analyzing the processing contents of the plurality of processes based on at least any of operation control modes, a control operation range, input/output items, or meanings/purposes. The operation control modes, the control operation range, the input/output items, and the meanings/purposes are written in the processing contents of the plurality of processes.

Abstract: The present disclosure provides a specification description program and a specification description method that allows a user to create processing contents of a plurality of processes in a simple manner when designing the plurality of processes to be executed in a plurality of devices. A specification description program causes a computer to execute a receiving process for receiving processing contents of a plurality of processes to be executed in a plurality of devices. The receiving process further provides a user with a unique representation method as a selectable function. The unique representation method indicates that processing contents are targeted for one or more devices of a same type among the plurality of devices.

Abstract: An air conditioning system includes a plurality of indoor units installed in the same indoor space, an outdoor unit and a control device. The indoor units include respective usage-side heat exchangers capable of setting set temperatures individually. The outdoor unit includes a heat-source-side heat exchanger conducting heat exchange with refrigerant circulating through the usage-side heat exchangers. The control device calculates a representative temperature related value shared by the indoor units using the set temperatures of the indoor units, and switches the indoor units between thermo-ON and thermo-OFF based on the representative temperature related value. The control device calculates the representative temperature related value based on a plurality of temperature differences between the set temperatures and control temperatures in the indoor units.

Abstract: An air conditioner includes an outdoor unit and a plurality of indoor units connected to the outdoor unit. The outdoor unit sometimes sets an evaporation temperature or a condensation temperature that is different from a value that any of the indoor units has requested from the outdoor unit. The indoor units have indoor-side controllers that perform capacity control that adjusts capacity based on a degree of superheating or a degree of supercooling, an air volume, or an evaporation temperature or a condensation temperature while calculating a requested capacity that is determined from a current room temperature and a set room temperature. The indoor-side controllers, when performing the capacity control, determine at least one of the air volume and a target value of the degree of superheating or the degree of supercooling based on the evaporation temperature or the condensation temperature that is set by the outdoor unit.

Abstract: An operation control apparatus of air-conditioning apparatus having an outdoor unit and an indoor unit includes a controller programmed to execute energy conservation control of the air conditioning apparatus. The controller includes at least one required temperature calculation part calculating a required evaporation temperature or a required condensation temperature based on either a current amount of heat exchanged in a usage-side heat exchanger of the indoor unit and a greater amount of heat exchanged in the usage-side heat exchanger than the current amount, or an operating state amount that yields the current amount of heat exchanged in the usage-side heat exchanger and an operating state amount that yields the greater amount of heat exchanged in the usage-side heat exchanger than the current amount.

Abstract: A refrigeration device includes a radiator, an evaporator, a compressor, a heater and a control device. The radiator causes a refrigerant to radiate heat. The evaporator causes the refrigerant to evaporate. The compressor compresses the refrigerant circulating between the radiator and the evaporator. The heater heats lubricating oil in the compressor. The control device controls the heater so that an oil temperature of the lubricating oil in the compressor reaches an oil temperature target value obtained by adding a predetermined temperature to saturation temperature of the refrigerant in the compressor.

Abstract: An air conditioner includes an outdoor unit and a plurality of indoor units connected to the outdoor unit. The outdoor unit sometimes sets an evaporation temperature or a condensation temperature that is different from a value that any of the indoor units has requested from the outdoor unit. The indoor units have indoor-side controllers that perform capacity control that adjusts capacity based on a degree of superheating or a degree of supercooling, an air volume, or an evaporation temperature or a condensation temperature while calculating a requested capacity that is determined from a current room temperature and a set room temperature. The indoor-side controllers, when performing the capacity control, determine at least one of the air volume and a target value of the degree of superheating or the degree of supercooling based on the evaporation temperature or the condensation temperature that is set by the outdoor unit.

Abstract: An air conditioning system includes a plurality of indoor units installed in the same indoor space, an outdoor unit and a control device. The indoor units include respective usage-side heat exchangers capable of setting set temperatures individually. The outdoor unit includes a heat-source-side heat exchanger. The control device performs temperature control using a thermo-ON condition set in advance in accordance with the set temperatures, and relaxes the thermo-ON condition of thermo-OFF indoor units when the indoor units include both those that are thermo-ON and those that are thermo-OFF and a predetermined condition is satisfied. The predetermined condition is that at least one of the plurality of indoor units continues to be thermo-ON for a first elapsed time or longer, and at least one of the plurality of indoor units continues to be thermo-OFF for a second elapsed time or longer.

Abstract: A refrigeration cycle system is capable of reducing an amount of information required to be specified in advance, reducing a computational processing load, reflecting differences in actual installation conditions, and speeding up stabilization of an operational state in which the total amount of required input energy is reduced. A refrigeration cycle system is provided with a plurality of actuators, including outdoor fan motors, compressors, indoor fan motors, and the like for causing a refrigerant circuit to carry out a refrigeration cycle. A control unit obtains the slope at the current evaporation temperature and/or the current condensing temperature on a graph of the function between the actuators and the evaporation temperature or the condensing temperature, and updates the value of the target evaporation temperature and/or the target condensing temperature so that the sum of the input energy to the actuators is less that the current level.

Abstract: An air conditioning system includes a plurality of indoor units installed in the same indoor space, an outdoor unit and a control device. The indoor units include respective usage-side heat exchangers capable of setting set temperatures individually. The outdoor unit includes a heat-source-side heat exchanger. The control device performs temperature control using a thermo-ON condition set in advance in accordance with the set temperatures, and relaxes the thermo-ON condition of thermo-OFF indoor units when the indoor units include both those that are thermo-ON and those that are thermo-OFF and a predetermined condition is satisfied. The predetermined condition is that at least one of the plurality of indoor units continues to be thermo-ON for a first elapsed time or longer, and at least one of the plurality of indoor units continues to be thermo-OFF for a second elapsed time or longer.

Abstract: An air conditioning system includes a plurality of indoor units installed in the same indoor space, an outdoor unit and a control device. The indoor units include respective usage-side heat exchangers capable of setting set temperatures individually. The outdoor unit includes a heat-source-side heat exchanger conducting heat exchange with refrigerant circulating through the usage-side heat exchangers. The control device calculates a representative temperature related value shared by the indoor units using the set temperatures of the indoor units, and switches the indoor units between thermo-ON and thermo-OFF based on the representative temperature related value. The control device calculates the representative temperature related value based on a plurality of temperature differences between the set temperatures and control temperatures in the indoor units.

Abstract: An air conditioning apparatus includes a heat source unit, usage units, and a controller. The heat source unit has a compression mechanism, a heat-source-side heat exchanger operable at least as an evaporator, and a heat-source-side expansion valve. The usage units have usage-side heat exchangers operable at least as condensers, and usage-side expansion valves. The controller regulates the opening degree of the heat-source-side expansion valve based on the opening degrees of the usage-side expansion valves.

Abstract: A refrigeration cycle system is capable of reducing an amount of information required to be specified in advance, reducing a computational processing load, reflecting differences in actual installation conditions, and speeding up stabilization of an operational state in which the total amount of required input energy is reduced. A refrigeration cycle system is provided with a plurality of actuators, including outdoor fan motors, compressors, indoor fan motors, and the like for causing a refrigerant circuit to carry out a refrigeration cycle. A control unit obtains the slope at the current evaporation temperature and/or the current condensing temperature on a graph of the function between the actuators and the evaporation temperature or the condensing temperature, and updates the value of the target evaporation temperature and/or the target condensing temperature so that the sum of the input energy to the actuators is less that the current level.

Abstract: A refrigeration device includes a radiator, an evaporator, a compressor, a heater and a control device. The radiator causes a refrigerant to radiate heat. The evaporator causes the refrigerant to evaporate. The compressor compresses the refrigerant circulating between the radiator and the evaporator. The heater heats lubricating oil in the compressor. The control device controls the heater so that an oil temperature of the lubricating oil in the compressor reaches an oil temperature target value obtained by adding a predetermined temperature to saturation temperature of the refrigerant in the compressor.

Abstract: An outdoor unit of a refrigeration apparatus includes an outdoor heat exchanger, first and second outdoor fans generating an air flow passing through the outdoor heat exchanger, and a fan controller configured to transition from a first operating state to a second operating state during low blow rate demand in which a low blow rate is desired. The first and second outdoor fans operate in the first operating state. The first outdoor fan continues to operate and power supply to the second outdoor fan is cut off in the second operating state. After transitioning to the second operating state, fan on/off control is performed to turn power supply to the first and second outdoor fans on and off based on one of a timer, observation of an electric current value relating to fan motors, and observation of the fan rotational speeds.

Abstract: An air conditioning apparatus (10) includes a heat source unit (20), usage units (40, 50, 60), and a controller (80). The heat source unit (20) has a compression mechanism (21), a heat-source-side heat exchanger (23) functioning at least as an evaporator, and a heat-source-side expansion valve (38). The usage units (40, 50, 60) have usage-side heat exchangers (42, 52, 62) functioning at least as condensers, and usage-side expansion valves (41, 51, 61). The controller (80) regulates the opening degree of the heat-source-side expansion valve (38) on the basis of the opening degrees of the usage-side expansion valves (41, 51, 61).

Abstract: An operation control apparatus of air-conditioning apparatus having an outdoor unit and an indoor unit, includes a controller programmed to execute energy conservation control of the air conditioning apparatus. The controller includes at least one required temperature calculation part calculating a required evaporation temperature or a required condensation temperature based on either a current amount, of heat exchanged in a usage-side heat exchanger of the indoor unit and a greater amount of heat exchanged in the usage-side heat exchanger than the current amount, or an operating state amount that yields the current amount of heat exchanged in the usage-side heat exchanger and an operating state amount that yields the greater amount of heat exchanged in the usage-side heat exchanger than the current amount.