Efficiency of thermo-chemical seasonal heat storage

V diplomski nalogi obravnavamo delovanje termo-kemičnega sezonskega hranilnika toplote za izbrano stavbo. Problem nekaterih obnovljivih virov, kot je sončna energija, je njihova nestalnost, zato za uskladitev razpoložljivosti vira in rabe energije v stavbi lahko uporabimo sezonske hranilnike toplote. Sezonski hranilniki toplote omogočajo, da lahko toploto, ki jo shranimo v poletnem času uporabimo v zimskem obdobju. Ločimo več različnih vrst sezonskih hranilnikov, kot so latentni, senzibilni in kemični hranilniki, med katere uvrščamo tudi termo-kemični hranilnik uporabljen v tej diplomski nalogi. V programskem okolju TRNSYS je izvedena simulacija delovanja sistema talnega ogrevanja s prigrajenim termo-kemičnim hranilnikom, in sicer za dve lokaciji stavbe: Ljubljana in Portorož. Prav tako je s pomočjo simulacije v TRNSYS-u in Excelovim izračunom izvedena tudi primerjava med termo-kemičnim in senzibilnim hranilnikom toplote. V tej primerjavi se osredotočimo na parametre površine SSE, volumen hranilnika in pokritost potrebe po energiji za izbrano stavbo. S to primerjavo želimo prikazati prednost termo-kemičnega hranilnika pri zagotovitvi večje pokritost potrebe po energiji za delovanje stavbe v primerjavi s senzibilnim sezonskim hranilnikom toplote.The thesis deals with the operation of a thermo-chemical seasonal heat storage unit for a selected building. The problem of some renewable sources, such as solar energy, is their incompatibility, therefore seasonal heat storages can be used to reconcile the availability of energy sources and energy use in the building. Seasonal heat storage allow the heat stored during the summer to be used during the winter. We distinguish several types of seasonal storage, such as latent, sensible and chemical storage, among which the thermo-chemical storage used in this thesis. In the program TRNSYS, a simulation of the operation of the underfloor heating system with a built-in thermo-chemical storage tank was carried out for two locations: Ljubljana and Portorož. Also, using a simulation in TRNSYS and Excel calculation, a comparison between a thermo-chemical and a sensible heat storage was performed. In this comparison, we focus on the parameters of the surface of the collectors, the volume of the storage tank and the coverage of the energy demand for the selected building. With this comparison, we would like to show the advantage of the thermo-chemical storage, to provide greater coverage of the energy demand for the operation of the building, compared to the sensible seasonal heat storage