Data center is a space for central placement and setting of data-processing equipment. It contains abundant low-temperature waste-heat resources. If a silica–water adsorption refrigeration unit is used in the data center for waste heat recovery

the cooling capacity of the refrigeration unit can satisfy the requirements of directly cooling the server CPU and the demand of the water-cooled backboard. The temperature of the heat exchange fluid under different working conditions is measured. The results show that the silica gel–water adsorption chiller can effectively utilize a low-temperature heat source in the range from 45 to 60 ℃ to cool the chilled water from approximately 23 ℃ to below 20 ℃. The cooling capacity is between 1.28 and 4.01 kW

and the coefficient of performance ranges from 0.22 to 0.51. When the hot-water temperature is increased

the cooling-water temperature is reduced

and the temperature of the chilled water is moderately increased. The silica gel–water adsorption chiller can provide more cooling capacity

and the data center can achieve better energy saving results.