2results about How to "Small heat transfer temperature difference" patented technology

The utility model discloses an adsorption type heat pump system directly driven by steam. The adsorption type heat pump system comprises a first adsorption bed, a second adsorption bed, an evaporator, an ammonia circulation pipeline and a condenser, the first adsorption bed is communicated with the second adsorption bed through a throttling valve, and the other end of the first adsorption bed and the other end of the second adsorption bed are communicated with an ammonia circulation pipeline through a two-position four-way reversing valve to form an adsorption bed heat exchange fluid loop; the first adsorption bed is connected with the evaporator and the condenser through a vacuum valve; the second adsorption bed is connected with the evaporator and the condenser through a vacuum valve; the evaporator is connected with an external heat source, and the condenser is connected with the first cooling tower. According to the system, ammonia is used as a heat exchange medium of the adsorption bed, isothermal adsorption and desorption of the adsorption bed in the adsorption and desorption process are achieved through latent heat transfer of isothermal evaporation / condensation, the temperature gradient of the adsorbent in the working process is reduced, the heat transfer temperature difference is small, and the adsorption and desorption rate of the adsorbent and the operation stability of the system are effectively improved.

The invention discloses a two-phase immersion adsorption type cooling system for a data center, and the system comprises a cabinet which is connected with an adsorption refrigeration module, a sensor module, and a controller module; a blade server is arranged in the cabinet, and a tubular heat exchanger is arranged above the blade server; the adsorption refrigeration module is connected with the tubular heat exchanger and used for achieving refrigeration circulation. The sensing module and the control module are matched to control the operation of the system; an adsorption type refrigeration technology is combined with a data center immersion type cooling technology, server heat dissipation serves as driving force for driving the data center to be cooled, waste heat resources of the data center are fully utilized, and the operation cost of the data center is reduced; a two-stage cooling mode is adopted for circulating water in a tubular heat exchanger, firstly, heat is released in an adsorption chamber for desorption of a working medium; and then the waste heat flows through the evaporation chamber and is further cooled by a condensation working medium from the condensation chamber, and the heat transfer temperature difference is reduced in two-stage cooling, so that the utilization efficiency of waste heat resources is improved.