Application of air cooled gas pump heat pipe compound cooling technology in energy storage power station
Existing energy storage plants currently employ traditional steam compression refrige-ration,and the utilization ratio of natural cold sources requires enhancement.The introduction of air pump heat pipe technology can remedy this problem.According to the temperature control in-dicators of the air-cooled energy storage battery cabinet,the 20 kW air-cooled gas pump heat pipe composite air condition prototype was designed and the experimental study on the prototype per-formance was conducted.The testing methodology utilizes the enthalpy difference method,with the outdoor dry-bulb temperature controlled between -5 ℃ and 35 ℃.Data pertaining to the cooling capacity and power consumption of the prototype at 100％load are meticulously recorded for analysis.The results show:① lithium batteries work best in the range of 15～35 ℃,and dur-ing the charging/discharging process,excessive temperature difference between battery cells can cause series capacity mismatch,insufficient charging between parallel circuit batteries/clusters,and incomplete discharge;② it is necessary to control the return air temperature of the air-cooled air condition in the energy storage battery cabinet to(25±1)℃;③ under the same condenser and evaporator configuration,the energy efficiency ratio(EER)of traditional air-cooled air condition and gas pump heat pipe composite air condition is both 2.21 under outdoor operating conditions of 35 ℃,with the EER reaching 3.81 under outdoor operating conditions of 10 ℃,5.63 under air pump heat pipe composite air condition,indicating good energy-saving potential;and@the tested technology is simple,reliable,and has good energy-saving advantages.Under all outdoor operating conditions,the annual energy efficiency ratio(AEER)of traditional air-cooled air condition is 3.31,while the AEER of air pump heat pipe composite air condition is 4.04.
gas pumpelectrochemical energy storagetemperature controlannual energy effi-ciency ratio
万方数据
维普
