DEVELOPMENT OF A TRNSYS MODEL FOR ANALYSIS OF DYNAMICAL BEHAVIOR OF A BOREHOLE THERMAL ENERGY STORAGE (BTES) FOR SOLAR THERMAL ENERGY

Edwin Samir Pinto Maquilon¹

¹ Universidad ECCI-Colombia, Universidad Rovira i Virgili -Spain, Fundación Banco Santander

doi:10.20906/CPS/COB-2015-1576

Resumo

Solar thermal energy technologies offer good potential for production of heat for residential space heating and domestic hot water production. It can be shown that the amount of solar radiation incident on the roof of a typical home exceeds its energy consumption over a year. However, offsets and intermittence of the solar radiation make complex to achieve the maximum performance of a solar system. Thermal Energy Storage intend to improve the performance of the solar system taking into account these issues, being short thermal energy storage the alternative to solve the intermittence issue and diurnal offsets and on the other hand seasonal thermal energy storage (STES) the alternative to take advantage the energy surplus in summer to use it in winter. In this sense, Madrid seems to be excellent scenary to apply this kind of technologies because of the high heating demand in winter, but also the high solar radiation in summer. Therefore, this project intends to develop a TRNSYS model to evaluate through simulations the performance of a specific technology of STES known as Borehole thermal energy storage (BTES) in a solar thermal system. For this project, it is going to take as a case of study the data supply by macro community called Altamira located in Madrid. To carry out this project, first of all it proceeds to study different technologies of STES to compare them regarding to parameters such as: Economics, heat capacity, maximum temperature storage, among others. Secondly, it analyses the monthly data of the case of study Altamira to get hourly data based on the heating degree days (HDD) for the inputs data in the TRNSYS model. Subsequent, it set up a scalable heat load model with TRNSYS using conventional energy sources so as to verify the hourly data obtained. Thirdly, after data verification, it set up TRNSYS sub models to assembly in the BTES system as follow: Firstly, a solar thermal generator with TRNSYS using Flat plate collectors to supply the domestic hot water consumption (DHW) for the case of st

Palavras-chave: Seasonal Energy Storage; Borehole thermal energy Storage; TRNSYS; simulation