Abstract: A water cooling control for a building structure includes a temperature sensor device and a zone controller. The temperature sensor is adapted for detecting a temperature difference of the water at each of the end loop terminals of the duct system for determining the amount of heat removed from the respective heat exchanger in responsive to heat exchange of the water. The zone controller is operatively linking with the temperature sensor device for adjustably regulating a flow rate of the water through a control valve of the delivering device in responsive to said temperature difference at each thermal zone until the water is maintained at the optimum flow rate to ensure the respective heat exchanger being operated at an optimum condition while being energy efficient.

Abstract: An energy saving system for a climate control system includes zone controllers which poll temperature difference of each heat exchanger downstream of the thermal station, and a system controller which polls degree of opening of all control valves from zone controllers associated with the heat exchangers downstream of the thermal station. Each zone controller configures degree of opening of the valve to regulate the medium flow in response to the temperature difference of the heat exchanger in its respective thermal zone to maintain medium at optimum flow rate to provide a thermal comfort at the thermal zone while being energy efficient. The system controller sends command to the thermal station control system to regulate the outlet temperature of the thermal station to ensure the thermal station consuming the least amount energy to provide the medium to each thermal zone to meet the thermal comfort need at the thermal zones.