Performance Evaluation of an Adsorption Heat Pump System Using MSC-30/R1234 yf Pair with the Impact of Thermal Masses  
[PERSON]  
1 Department of Advanced Environmental Science and Engineering, Faculty of Engineering Sciences, Kyushu University, Kasuga-koen 6-1, Kasuga-city 816-8580, Japan; [EMAIL_ADDRESS] (Fm.J. ; [EMAIL_ADDRESS] (YM. ); [EMAIL_ADDRESS] (K.T. ); [EMAIL_ADDRESS] (T.M.) [PERSON]  
1 Department of Advanced Environmental Science and Engineering, Faculty of Engineering Sciences, Kyushu University, Kasuga-koen 6-1, Kasuga-city 816-8580, Japan; [EMAIL_ADDRESS] (Fm.J. ; [EMAIL_ADDRESS] (YM. ); [EMAIL_ADDRESS] (K.T. ); [EMAIL_ADDRESS] (T.M.) [PERSON]  
1 Department of Advanced Environmental Science and Engineering, Faculty of Engineering Sciences, Kyushu University, Kasuga-koen 6-1, Kasuga-city 816-8580, Japan; [EMAIL_ADDRESS] (Fm.J. ; [EMAIL_ADDRESS] (YM. ); [EMAIL_ADDRESS] (K.T. ); [EMAIL_ADDRESS] (T.M.) [PERSON]  
1 Department of Advanced Environmental Science and Engineering, Faculty of Engineering Sciences, Kyushu University, Kasuga-koen 6-1, Kasuga-city 816-8580, Japan; [EMAIL_ADDRESS] (Fm.J. ; [EMAIL_ADDRESS] (YM. ); [EMAIL_ADDRESS] (K.T. ); [EMAIL_ADDRESS] (T.M.) [PERSON]  
1 Department of Advanced Environmental Science and Engineering, Faculty of Engineering Sciences, Kyushu University, Kasuga-koen 6-1, Kasuga-city 816-8580, Japan; [EMAIL_ADDRESS] (Fm.J. ; [EMAIL_ADDRESS] (YM. ); [EMAIL_ADDRESS] (K.T. ); [EMAIL_ADDRESS] (T.M.) Footnote 1: email: {[EMAIL_ADDRESS]}; {[EMAIL_ADDRESS]}; {[EMAIL_ADDRESS]}; {[EMAIL_ADDRESS]}; {[EMAIL_ADDRESS]}; {[EMAIL_ADDRESS]}; {[EMAIL_ADDRESS]}; {[EMAIL_ADDRESS]}; {kaw. problems, the research in recent years has concentrated on improving performance and efficiency. For instance, finding \"adsorbent-adsorbate\" pairs with higher performance and optimization of adsorption cycles operation strategy are constantly being reported [4; 5; 6; 7]. Among the tested materials, activated carbon (AC) has often been adopted as a major adsorbent. Many studies have demonstrated adsorption on several kinds of AC with high surface area and volumetric uptake, high thermal conductivity, controllable pore structure, and good thermal stability [8; 9; 10; 11; 12; 13; 14; 15; 16]. Many researchers have reported the adsorption isotherms of the activated-carbon-refrigerant pairs for the adsorption systems as well. [PERSON] et al. [17] experimentally measured AC/R134a and AC/R507A pairs to evaluate adsorption kinetics of R134a and R507A on the pitch-based activated carbon, namely MSC-30 (often known as Maxsorb III), by the constant volume variable pressure (CVVP) method, like in this work. Using the aforementioned MSC-30, [PERSON] et al. [18] presented an investigation of performance of an adsorption-compression hybrid refrigerant system using AC with several refrigerants for the mechanical vapor compression system (R1234 yf, R134a, R152a, R1234 ze) and ethanol for the adsorption cycle. Therewithal, MSC-30 proved to have especially good adsorption properties when used with ethanol as a refrigerant [19; 20]. Later on, [PERSON] et al. [21] evaluated several kinds of adsorbent-adsorbate pairs consisting of activated carbon and refrigerant for the adsorption heat pump system showing an improved model for the isosteric heat of adsorption. Furthermore, [PERSON] et al. [21] also demonstrated a thermodynamic model for the isosteric heat of adsorption. That is an important factor since many industrial applications utilize the adsorption process [22; 23; 24; 25]. Nevertheless, their AC's drawback was a lower adsorption quantity, when the maximum adsorption quantity was only around 0.3 kg/kg, which was approximately a quarter of calcium chloride capacity, showing the highest reported adsorption quantity of 1.2 kg/kg [26; 27]. The potential of a typical adsorbent-adsorbate pair is often assessed using an equilibrium cycle analysis when the adsorption isotherm data are available.