“…Its temperature-regulating capacity was higher as compared with using only silica gel. The moisture buffering capacity is close to that of the silica gel; however, it was lower than for silicas modified by hygroscopic salt, as proposed in [8]. Thus, the proposed method and materials could effectively improve the stability of the temperature and relative humidity in museum display cases.…”
Section: Development Of Novel and Optimization Of Known Ahts Applicat...mentioning
“…Its temperature-regulating capacity was higher as compared with using only silica gel. The moisture buffering capacity is close to that of the silica gel; however, it was lower than for silicas modified by hygroscopic salt, as proposed in [8]. Thus, the proposed method and materials could effectively improve the stability of the temperature and relative humidity in museum display cases.…”
Section: Development Of Novel and Optimization Of Known Ahts Applicat...mentioning
“…Simultaneously, the ‘sweat’ can be seeped into the macro-environment because the size distribution of the gaps in the fabric structure creates the driving force of water vapour concentration gradient. Depending on the appropriate ACR, coupling between passive control (hydrothermal behaviour of the enclosure) and boundary control (the macro-environment control) 45 could create the buffering effect required for safe collection storage.Figure 6.Functional structure of the material.…”
Storage enclosures made of paper-based materials are commonly used to store and classify archival documents for their hygrothermal buffering effect. However, there is little information about papermaking and quantitative studies on such an effect. Aiming to assess the feasibility of using the enclosure to buffer temperature and relative humidity fluctuations, without any detrimental effect on the collections, this paper reports four measurements and a feasibility assessment: thermophysical properties of the enclosure material, hygroscopic properties of the material, air change rate of the enclosure, buffering effect in a climate chamber and the assessment of safeguarding collections without causing any detrimental effect. The measurement results show that the enclosure can buffer macro-environmental fluctuations, which was considered sufficient to mitigate temperature and humidity fluctuations from the room environment and to secure a condition inside that is safe for the collections. The paper-based material determines the buffering capacity of the enclosure, and an appropriate air change rate ensures average temperature and relative humidity inside the enclosure at a controllable level and prevents off-gassing accumulation. This work provides assurance that using enclosures is an effective approach to collection storage and establishes a significant basis for further heat–air–moisture simulation and energy-saving optimisation study in the service operation.
“…Another vital issue associated with air infiltration in buildings during winters in cold countries is a dramatic drop in indoor humidity down to 10-20% [7], which is far below the comfort level (40-60%). Heating, ventilating, and air conditioning systems (HVAC) and humidifiers can partially alleviate this problem.…”
Due to global climate change and fossil fuel depletion, the rational use of thermal energy has attracted great research interest. Large differences between indoor and outdoor temperatures in cold regions results in huge amounts of heat waste and drop in indoor humidity. Ventireg, an adsorption method, has been often recommended for heat and humidity regeneration in cold countries. In this research work, VentireC, an advanced method employing two thermally coupled adsorbent beds is discussed. It allows the heat released during adsorption of moisture in one adsorber to be transferred to another adsorber to facilitate water desorption. The VentireC approach is comprehensively analysed and described in this paper. A composite adsorbent based on LiCl in silica gel pores, which can exchange up to 0.5 g-H2O/g-sorbent, is selected for VentireC processes under cold Western Siberia conditions. Mathematical simulation of humidity recuperation, employing the selected sorbent with and without thermal coupling, demonstrates the advantages of the VentireC process.
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