An　experimental　energy　storage　system　has　been　designed　using　a　new　type　flat　micro　heat　pipe　heat　exchanger　that　incorporates　a　moderate-temperature　phase　change　material　paraffin　with　a　melting　point　of　58　degrees　C.　The　basic　structure,　working　principles,　and　design　concept　are　discussed.　The　heat　transfer　process　during　the　charging　and　discharging　of　the　heat　exchanger　under　various　operating　conditions　has　been　experimentally　investigated.　Results　show　that　the　performance　of　the　new　type　flat　micro　heat　pipe　was　steady　and　efficient　during　charging　and　discharging.　The　average　thermal　storage　power　and　absorption　efficiency　have　been　determined　to　be　approximately　537W　and　92.5%,　respectively.