Abstract: A chiller system includes: a chiller; a load; a feed pipe through which water flows from the chiller to the load; a return pipe through which water flows to the chiller from the load; a first controller configured to control the chiller; and a second controller configured to output a chiller operating command to the first controller, the chiller including a first sensor configured to measure an inlet water temperature of the water flowing through the return pipe to the chiller, a second sensor configured to measure an outlet water temperature of the water flowing through the feed pipe from the chiller, and a third sensor configured to measure an outside air temperature at a chiller installation location, and the first controller calculates a temperature range operational for the chiller based on an inlet water temperature, an outlet water temperature, and an outside air temperature, and then outputs information on the calculated temperature range to the second controller.

Abstract: A chilling unit includes a machine room unit to accommodate a compressor and a heat exchanger, and a plurality of air heat exchangers placed on top of the machine room unit. The air heat exchangers include a pair of air heat exchangers including two air heat exchangers opposite to each other in a lateral direction. They are inclined such that respective upper end portions of the two air heat exchangers have a spacing between each other greater than a spacing between respective lower end portions of the two air heat exchangers. In the lateral direction, the machine room unit has a top width greater than a heat-exchanger bottom width, the top width is one between side walls in a top face portion of the machine room unit, the bottom width is defined as a width between outer side faces of the respective lower end portions of the two air heat exchangers.

Abstract: A refrigeration cycle apparatus includes a refrigerant circuit in which a compressor, a refrigerant flow switching device, an air-side heat exchanger, an expansion valve, a water-side heat exchanger, and an accumulator are connected by refrigerant pipes and refrigerant is circulated. G/A is less than or equal to a predetermined threshold ?, where G [L] is a difference in volume between the air-side heat exchanger and the water-side heat exchanger, and A [L] is a volume of the refrigerant circuit.