METHOD FOR MANAGING ENERGY CONTROLLING TEMPERATURE DIFFERENTIAL OF CHILLED WATER AND APPARATUS THEREOF

摘要

The present invention relates to an energy managing method for buildings to save power for a cold water pump by controlling temperature difference between primary cold water and returning cold water, changing the flow rate of the cold water pump, and maintaining pleasant indoor environments and an energy managing device for same. The present invention reduces the energy consumption of the cold water pump by effectively operating the heat source equipment of a building based on systematic data and adjusting the flow rate of the cold water pump when the temperature difference between the primary cold water and the returning cold water is below a predetermined temperature or the cold water pump has an excessive flow rate; and optimizes energy saving effects by periodically or seasonally monitoring the temperature difference between the primary cold water and the returning cold water based on the usage of an energy managing system and changing the flow rate of the cold water pump to satisfy conditions for obtaining safety factors for heat source facilities and pleasant indoor environments for users. [Reference numerals] (11) Clod water pump;(12) Cooling tower;(13) Clod water coil;(14) Refrigerator;(AA) Coolant returning temperature;(BB) Coolant supplying temperature;(CC) Coolant returning flux;(DD) Coolant pump;(EE) Clod water supplying temperature;(FF) Clod water returning temperature;(GG) Clod water returning flux;(HH) Air supply fan;(II) Air-conditioning zone