Aimed at the problem of infrared exposure of the gateway resulted from the traditional dealing way of surplus heat of diesel power station in protective engineering

three application schemes of the phase-change thermal storage reservoir are put forward

which can reduce underground reservoir volume

extend the time of electricity power supply and improve energy efficiency. After building an experimental table of the latent heat storage system

the effects of the unit dimension

the flux and temperature of the fluid on the temperature distribution and the heat storage rate of thermal storage reservoir are analyzed. The results show that the rate of heat transfer is significantly improved when the unit dimension decreases or temperature difference of the heat transfer fluid increases

whereas the effect of the increasing volume of the heat transfer fluid is comparatively weak.