Water adsorption characteristics of novel materials for heat transformation applications

Henninger, Stefan K.; Schmidt, Ferdinand; Henning, Hans–Martin

doi:10.1016/j.applthermaleng.2010.03.028

Cited by 272 publications

(160 citation statements)

References 31 publications

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“…The setup is described in detail in ref. [2] The integral heat has been measured for three adsorption/desorption cycles in order to avoid any (single) structural effects. For the first adsorption cycle starting at 140°C down to 40°C the integral heat including the sensible heat (heat capacity of the material and the adsorbed water) has been determined to 2.557 kJ/g.…”

Section: Resultsmentioning

confidence: 99%

“…[1] Thermally driven chillers and heat pumps based on the reversible adsorption/desorption of water in micro-and mesoporous materials, in particular, provide a promising approach towards a more rational use of energy, a sustainable energy policy as well as an effective climate protection through the reduction of the environmental impact of conventional heating and cooling devices. [2] The principle cycle of an adsorption heat-pump process or chiller is illustrated as an ideal cycle in Figure 1. The process is determined by the minimum adsorption (point B), the maximum desorption temperature (point D) as well as by the evaporator and condenser pressure.…”

Section: Introductionmentioning

confidence: 99%

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Water Adsorption Characteristics of MIL‐101 for Heat‐Transformation Applications of MOFs

2010

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The adsorption of water vapor in the highly porous metal‐organic framework (MOF) of 3D‐[Cr3F(H2O)2O(bdc)3·~25H2O] (MIL‐101) (bdc = benzene‐1,4‐dicarboxylate, terephthalate) of up to 1 g of water per gram of sorbent material (between 140 °C and 40 °C under a water vapor pressure of 5.6 kPa) together with the stability over several cycles makes MIL‐101 the most promising material, so far, for heat transformation applications like thermally driven heat pumps or adsorption chillers.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Water Adsorption Characteristics of MIL‐101 for Heat‐Transformation Applications of MOFs

2010

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“…Aktivkohlen, Silikagele und Zeolithe eingesetzt [2,3]. Neuerdings werden auch verschiedene metall-organische Gerüstverbindungen vorgeschlagen [4].…”

Section: Introductionunclassified

Wasseradsorption und ‐diffusion in SAPO‐34 für die adsorptive Wärmetransformation

Stallmach

Splith

Chmelik

et al. 2016

Chemie Ingenieur Technik

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The diffusion of water in SAPO-34 was investigated experimentally in the temperature and loading range relevant for adsorptive heat transformation applications. Corrected diffusivities, which were determined by IR microscopy using adsorptive layers on aluminum supported SAPO-34 during adsorption and desorption and self-diffusion coefficients derived from NMR diffusion studies in thermodynamic equilibrium are found to be consistent to each other. They are both independent of water loading and about two orders of magnitude smaller than the diffusivity of liquid water at the same temperature. The temperature dependence of the water diffusion may be well described by an activation energy of (11 +/- 2)kJmol(-1)

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“…[155][156][157] More recently, solid sorbents have been investigated due to the significantly lower cycled thermal mass. 158,159 In comparison with a conventional heat pump in which a mechanical compressor drives the cycle, adsorption heat pumps make use of adsorption/ desorption cycles of a sorbate, most often water, onto a porous solid sorbent to provide a temperature lift. Current R&D is targeting primarily the development of more efficient sorbents with tailored hierarchical porosity as well as a heat exchanger design and fast/smart assembly techniques.…”

Section: Sorption Coolingmentioning

confidence: 99%

Energy in buildings—Policy, materials and solutions

Koebel

Wernery

Malfait

2017

MRS Energy & Sustainability

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Buildings account for ∼40% of global energy demands, and the increased adoption of innovative solutions for buildings represents an enormous potential to reduce energy demands and greenhouse gas emissions. Here, we critically review the current and future materials and solutions for the construction sector. We describe how policy affects innovative businesses and the adoption of new products and solutions. We investigate how the building envelope and user behavior determine building energy demands. Compared to conventional solutions, superinsulation materials (vacuum insulation panels, silica aerogel) can achieve the same thermal performance with drastically thinner insulation. With low-emissivity coatings and appropriate filler gasses, double and triple glazing reduces thermal losses by an order of magnitude. Vacuum and aerogel glazing reduce these even further. Switchable glazing solutions maximize solar gains during wintertime and minimize illumination demands whilst avoiding overheating in summer. Upon integration of renewable energy systems, buildings become both producers and consumers of energy. Combined with the dynamic user behavior, temporal variations in energy production require thermal and electrical storage and the integration of buildings into smart grids and energy district networks. The combination of these measures can reduce the energy consumption of the building's stock by a factor of three.

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Water adsorption characteristics of novel materials for heat transformation applications

Cited by 272 publications

References 31 publications

Water Adsorption Characteristics of MIL‐101 for Heat‐Transformation Applications of MOFs

Water Adsorption Characteristics of MIL‐101 for Heat‐Transformation Applications of MOFs

Wasseradsorption und ‐diffusion in SAPO‐34 für die adsorptive Wärmetransformation

Energy in buildings—Policy, materials and solutions

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