Identificador: TDX:3049
Autors: González Espín, José Luis
Resum:
The appearance of condensation in the coil is one of the main problems to avoid in an active chilled beam of building air-conditioning systems. In humid climates, by infiltrations of outside air, and in spaces with high latent load, the latent load of the stay is high, and active chilled beams can present the problem of condensation. This doctoral thesis contains all the necessary stages for the development and validation of a new numerical model of active chilled beams, and its adaptation as a new component of a calculation tool for the thermal simulation of the active chilled beam coupled to the building, and the rest of the system components.
Through annual dynamic thermal simulations, this doctoral thesis shows that the commonly used condensation prevention system, can lead to a high number of hours of thermal discomfort. For this, pseudo-stationary mathematical models of the complete system (active chilled beam, air conditioners and thermal production units), which are suitable for estimating the hourly consumption for a complete type year, are implemented. In addition, these models are used in order to compare alternative designs of the condensation control system. Finally, the electrical consumption of active chilled beams installations in the air-water systems market is compared, and in particular in relation to fan-coils. There are some studies in this regard by manufacturers of each of the systems, but they lack objectivity. In this doctoral thesis both systems are compared in different applications and climates in Spain, in order to determine the performance of each technology and identify market niches in which the active chilled beam system can continue to expand.
Repositori URV