The indoor climate modelling and the economic analysis regarding the energetic rehabilitation of church

Abstract

The paper describes the behaviour of a heating system with radiators in a cult building. There has commonly used in many churches with many shortcomings. The temperature distribution in the analysed space is simulated in 2D. The simulation is based on an example, the Cathedral of the Assumption of the Virgin Mary in Jassy. The heating system with radiators simulated with the FLUENT program, the results being edifying for the factual state of the building. An important aspect is the impact of these heating systems on the works of art, the church being the 18th — century edifice. Current environmental issues lead to the continuous development of technologies used to reduce primary energy consumption. Churches are an invaluable wealth, sheltering heritage elements preserved in museums and historic buildings. Unheated churches have been used for centuries. Then, after installing one or more different heating systems, signs of rapid degradation appeared.
 

2. Parametric Optimization and Calculation of Vibrations Introducted by Propulsion Installation

“…For analysis we used a specialized program in the finite element method, Ansys Workbench, available within the Naval Academy "Mircea cel Batran". The propulsion system made and used as a model for calculations shall be made of steel with properties as defined in Table 1 [4,5]. Next, we will present how the modal analysis is carried out for the model propulsion plant.…”