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Heat Pumps Technical Options

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Heat Pumps Technical Options ( heat-pumps-technical-options )

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The COP of ejector heat pumps is generally lower than MVC or thermally activated systems, which makes it difficult for the technology to have market penetration. Nevertheless, the technology has undergone a transformation lately because of its ability to use rejected recovered heat to drive the system. Efforts are made to use ejector technology with CFD analysis and refrigerant optimization in prototype construction (Aidoun and Martel, 2009). Although ejector cycles use the same refrigerant for both primary and secondary flow, binary refrigerants are being tested to improve the cycle performance. 12.3.3.6 Stand-alone solid desiccant AC: Development status: commercially available and Ground-coupled solid desiccant AC: Development status: R&D Stand-alone liquid desiccant technology is an available technology. Ground coupled solid desiccant cooling technology is in the R&D stage. 2018 TOC Refrigeration, A/C and Heat Pumps Assessment Report 245

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