Development of high-capacity porous carbon adsorbent for water adsorption heat pump

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Recently, it is required to develop the technologies of creating, buildup, and saving of energy. One of the possible system for the utilization of low waste heat is the water adsorption heat pump (WAHP). In this study, we aimed to develop a high-capacity porous carbon adsorbent for WAHP, on which the water adsorption isotherm shows steep and large uptake at low relative pressure where is the operation pressure range of WAHP. The prepared porous carbon materials were controlled the pore properties and doped the nitrogen atoms into the carbon matrices. It was successful to develop the prepared N-doped porous carbon materials which show five times higher water adsorbed amount difference at low relative pressure range comparing with the non-doped porous carbon materials, as an adsorbent for WAHP.