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D.3.4 Design review of the hybrid heat pump
This document is the deliverable “D3.4 – Design review of the hybrid heat pump” in the European project “HYCOOL - Industrial Cooling through Hybrid system based on Solar Heat” (hereinafter also referred to as “HYCOOL”, project reference: 792073). HyCool Project Mission is increasing the current use of Solar Heat in Industry Processes, and to do so the project proposes the coupling of a new Fresnel CSP Solar thermal collectors (FCSP) system with specially build Hybrid Heat Pumps (HHP) (a “two in one” combination of adsorption and compressor-based heat pumps) for a wider output temperature range (Solar Heating & Cooling –SHC-), and a wide range of design and operational configurations to increase the potential implementation of the proposed Solar Heat in industrial environments. The solutions encompassed in the project will be implemented and tested in operational processes in two different pilot cases in the food and chemical industry. The food case pilot is hosted by Bo de Deb. which represents a small food industry in a high solar irradiation area with cooling needs in the production processes. Here the industrial cold installation is necessary for the good preservation of the product. The chemical case pilot targets industries with several processes in high solar irradiation areas with steam and cooling needs. This pilot is hosted by Givaudan where the cold installation makes use of a brine chiller to keep the water entering the liquid ring of the vacuum pumps at 7.C.
The purpose of this deliverable is to describe the key findings of the review process, which focuses on the design of the Hybrid Heat Pump. This report contains the findings with regard to control strategy, the interconnection of the heat pumps, selection of the suitable adsorbent and refrigerant, as well as an optimal size of the HHP.