Velte-Schäfer, AndreasAndreasVelte-SchäferZhang, YannanYannanZhangNonnen, ThomasThomasNonnenWittstadt, UrsulaUrsulaWittstadtFrazzica, AndreaAndreaFrazzicaFüldner, GerritGerritFüldnerPalomba, ValeriaValeriaPalomba2023-06-202023-06-202023Note-ID: 00008922https://publica.fraunhofer.de/handle/publica/44308610.1016/j.enconman.2023.117252Sorption modules are the core component of thermally driven heat pumps and chillers. The efficiency of these devices strongly depends on the advantageous design of sorption modules. In this paper a calibrated and validated numerical model for an innovative sorption module with a combined evaporator-condenser is presented. The adsorption heat exchanger is based on flat tube-lamella design directly crystallized with the zeotype adsorbent silico-alumino-phosphate-34. The prediction quality of the model regarding the efficiency is within the measurement uncertainty (±0.02 kJ/kJ). Besides the good prediction quality of this integral performance indicator, the root mean square deviation of the transient outlet temperatures is in the range of 1.1…1.9 K, which is a very good agreement. Since the performance indicators efficiency and power density strongly depend on the temperature boundary conditions and half cycle times, an in-depth analysis of the experimental data using the method of heat and mass transfer resistances is suggested that overcomes this limitation. This analysis allows for a direct comparison with other sorption module designs. In a first step this analysis revealed that the evaporator-condenser component limits the sorption process during evaporation. Compared to other designs the evaporator-condenser has a 3-5 times higher volume scaled heat and mass transfer resistance (17 dm3K/kW) in the evaporation phase underlining the necessity to further optimize this component in future modules.en(public Modelica library) SorpLibSAPO-34Sorption moduleHeat and mass transfer resistancesThermally driven heat pumpThermally driven chillerjournal article