Progetto SWS Heating - D4.2 Design of the innovative sorption storage including the central switching unit - RE-71/24

Throughout the framework of tasks 2.4 and 4.1, a generic heating system for integrating the solar-driven adsorption seasonal thermal energy storage (STES) in different climatic zones in Europe has been developed and reported on in deliverable 4.1. According to the chosen design, the SWS seasonal adsorption thermal energy storage module (STES) comprises an adsorber/desorber and an evaporator/condenser heat exchanger with a vacuum valve inbetween, which shall be opened during the charging phase (in summer operation) and the discharging phase (in winter operation). During the storage time, the valve shall be hermitically closed. Deliverable 4.1 introduces, in addition, the first developments of the vacuum valves. Within the deliverables 4.3 and 4.4, the developments leading to the final design of the adsorber/desorber as well as evaporator/condenser plate heat exchangers have been described in detail. Chapter 2 of this deliverable introduces the further developments concerning the individual vacuum valves for the storage modules and their actuation along with the cycling test results, which lead to freezing the valve design for the STES demonstration prototype. Chapter 3 introduces the detailed assembly steps for each storage module, which have been developed by OTH Regensburg and exchanged with Fahrenheit, which is responsible for fabricating the modules for both laboratory and demonstration units. Chapter 4 presents the assembly steps needed for fabricating the whole demonstration prototype comprising three adsorption storage modules along with the necessary hydraulic components as well as temperature and flow rate sensors to evaluate and control the operation of the demonstration prototype.