Abstract: The innovation uses the disparity between dry and wet conditions of the air, by storing the ‘dryness’ or ‘wetness’ in a hygroscopic material. When the surrounding air is drier or wetter than the hygroscopic material, the potential energy difference between moisture in the air and that in the material can be used as a way of transporting heat from the material to the air and vice versa. A simple way this energy can be used is for heating and cooling of a building. For example, a large storage of adsorbing material can be dried in the hot summer, and allowed to re-adsorb water in the cold winter, thus gaining heat that can be used for domestic heating.

Abstract: The innovation uses the disparity between dry and wet conditions of the air, by storing the ‘dryness’ or ‘wetness’ in a hygroscopic material. When the surrounding air is drier or wetter than the hygroscopic material, the potential energy difference between moisture in the air and that in the material can be used as a way of transporting heat from the material to the air and vice versa. A simple way this energy can be used is for heating and cooling of a building. For example, a large storage of adsorbing material can be dried in the hot summer, and allowed to re-adsorb water in the cold winter, thus gaining heat that can be used for domestic heating.

Abstract: Systems, apparatus, methods, articles of manufacture, and interfaces for electronic media file (e.g., e-book) management are provided. Data descriptive of electronic media files (e.g., e-books, video, and/or audio files) may be searched, scanned, looked-up, and/or otherwise acquired. Such data may be utilized to determine an authenticity and/or availability of a particular media file. Digital Rights Management (DRM) and/or other related files and/or information may be analyzed, for example, to determine a likelihood or probability that a particular media file is (i) available and/or accessible and/or (ii) authentic. The likelihood of a media file being available and/or authentic may be utilized to select and/or provide content to a user such as one or more advertisements, rewards and/or promotions (e.g., from a third-party).