Patent ID: 9217575
Filing Date: 2015-12-22
Classification: F24F

Abstract:
1. An air-cooling-and-heating controlling system comprising: a plurality of supply air flow rate controllers controlling flow rates of supply air that is supplied from an air cooler and heater to a plurality of controlled areas in accordance with load statuses of the controlled areas, and a supply air temperature controller controlling, to a supply air temperature setting value, the supply air temperature that is supplied from the air cooler and heater to the plurality of controlled areas, wherein: each supply airflow rate controller comprises: the supply air temperature controller comprises: wherein the cold air/hot air switching device determines the cold air temperature setting value, the hot air temperature setting value, and a time interval for alternatingly switching between the cold air temperature setting value and the hot air temperature setting value, based on a relationship of magnitudes of the cooling requirements and the heating requirements when there is a mixture of the cooling requirement and the heating requirement in the cooling/heating requirement information that has been received, and wherein the cold air/hot air switching device, when there is no mixing of a cooling requirement and a heating requirement in the cooling/heating requirement information that has been received, predicts, from the current load statuses of an individual controlled areas, a mixing of a cooling requirement and a heating requirement, and, prior to performing alternating switching of the cold air temperature setting value and the hot air temperature setting value, corrects, in a direction of excess-loading, room temperature setting values for controlled areas other than a source of a cooling/heating requirement for which the cooling/heating requirement information is predicted to go to a state that is opposite of current cooling/heating requirement.