This article comprehensively analyzed the technical parameters and actual energy consumption of the large temperature difference system on the chilled water side of the high area air conditioning system in hospital.The"small flow,large temperature difference"technol-ogy of the large temperature difference in chilled water can achieve the goal of reducing energy consumption and operating costs.This article compared the impact of large temperature differences on fan coil units,summarized the relevant practical experience and improvement meas-ures of large temperature difference energy-saving technology,which concludes that the optimal temperature difference reference value for chilled water supply and return water in hospital buildings is 6 ℃~7 ℃,which can improve the economic benefits and energy-saving po-tential of air conditioning systems.
large temperature difference in chilled waterEnergy consumptionCold water pumpRefrigeration efficiency