Ethylene glycol refrigerating unit energy conservation method

The invention provides an ethylene glycol refrigerating unit load regulation method. By the adoption of the method, electricity consumption can be reduced, energy is saved, and efficiency is high. Two identical compression machine heads are adopted for a unit, an evaporator is shared, automatic variable-frequency adjustment of the rotating speed of the compression machine heads can be achieved according to set refrigeration water feeding temperature, automatic starting and stopping can be achieved, and meanwhile, people can choose to start one compression machine head or two compression machine heads automatically according to production load.