Entropic analysis of adsorption open cycles for air conditioning. Part 2: interpretation of experimental data

A Study on Cooling Performance and Exergy Analysis of Desiccant Cooling System in Various Regeneration Temperature and Outdoor Air Conditions

“…Especially, using exergy analysis based on the second law of thermodynamics can resolve the issue related to system efficiency in a more fundamental way by analyzing the cause of exergy destruction both in whole system and each component. (1,2) 제습 냉방시스템에 대한 선행연구로 Pons and Kodama (3) 는 냉방 공조를 위한 흡착식 개방형 사이 클에 대한 엔트로피 해석을 수행하였고 등 , Kodama (4) 은 이에 대한 실험적 연구를 진행하였으며, Chang and Lee (5) . 제습휠에서의 엑서지 파괴율은 식 와 같다 (5) .…”

On the validity of lumped capacitance approaches for the numerical prediction of heat and mass transfer in desiccant airflow systems

“…Several studies of partial or complete solid desiccant systems for air conditioning have been conducted, mainly supported on experimental results [45,46] or using mathematical modelling with the behaviour of the desiccant device taken from proper laboratory experiments [47], manufacturer's performance data [48] or specific modelling software [49][50][51].…”

Irreversibility in energy processes: Non-dimensional quantification and balance

“…Such systems, mostly designed for air-conditioning, are based either on adsorption (silicagel on a rotary wheel) or on liquid sorption (LiBr). A typical desiccant cooling system is schematically shown in Figure 1 [22]. The ambient atmosphere (#1 in Figure 1) is the heat sink at T c , the air-conditioned room (#5) is the lowtemperature (T e ) heat source of the cycle, and heat is supplied at T h to the heating system HS (#8).…”

“…In ref. [22], the second law analysis of such cycles has been developed and applied to experimental data obtained at Kumamoto University. It shows Table 1 Analysis of the basic cycles: 1.…”

“…(7) and (8) also apply to open cycles. Figure 2 presents one example of the results [22]. The thermodynamic e‰ciency h th (closed circles ) and the di¤erent entropy-productions, non-dimensionalised according to the present approach, are presented additively on the ordinate axis.…”