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Hydride compressor
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<p>A hydride compressor is a <a href="/facts/Hydrogen_compressor/IdYDXH0P">hydrogen compressor</a> based on <a href="/facts/Metal_hydride/v2rlBGMg">metal hydrides</a> with <a href="/facts/Absorption_(chemistry)/XGeB64bC">absorption</a> of <a href="/facts/Hydrogen/BoYHjl0J">hydrogen</a> at low pressure, releasing heat, and <a href="/facts/Desorption/rWdeJjxn">desorption</a> of hydrogen at <a href="/facts/High_pressure/mvnvWqIs">high pressure</a>, absorbing heat, by raising the temperature with an external heat source like a heated waterbed or electric coil. </p><p>Advantages of the hydride compressor are the high volumetric <a href="/facts/Density/92p6hh9I">density</a>, no <a href="/facts/Moving_parts/8hdnGQ0c">moving parts</a>, simplicity in design and operation, the possibility to consume waste heat instead of electricity and reversible absorption/desorption, disadvantages are the high cost of the metal hydride and weight. </p>