Modeling and Analysis of a Coated Tube Adsorber for Adsorption Heat Pumps

This work investigates the effects of several parameters on coefficient performance (COP) and specific heating power (SHP) a coated-tube adsorber for adsorption heat pumps (AHP) suitable water (space and/or domestic heating). The COP SHP are obtained based physical models that have already been proven to adequately describe this type adsorber. Several tested, namely, regeneration, condenser evaporator temperatures, transfer fluid velocity, tube diameter, adsorbent coating thickness, metal–adsorbent coefficient, cycle time. Two different scenarios were corresponding distinct working conditions. conditions Scenario A pre-heating in mild climates. B’s European standard EN16147. maximum is regeneration temperatures 75 °C 95 Scenarios B, respectively. increases longer times (more complete desorption processes) whilst decreases (less cycles by unit time). Hence, right balance between must be found each particular scenario best whole AHP. lower than 200 W·m−2·K−1 leads reduced SHP. Lower thicknesses lead higher can still provide reasonably high COP. However, low would require too-high number tubes achieve desired mass deliver required useful power, resulting too-large systems. Due this, relationship size system selected application.