Rapporten omhandler en analyse af fire nylige implementerede ventilationsanlæg, som er opsat i flere af Aarhus Universitets bygninger med det formål at skulle levere klimavenlige forhold til kontorer, auditorium og kantine m.m.
Emnerne rapporten omhandler er termiske maskiner og automation.
This report, “Establishment of ventilation” is focusing on a new implementation of four ventilation systems, which are placed in three buildings at Aarhus University as comfort ventilation. The ventilation is made for offices, common rooms and kitchens. In addition the report is written as a part of the bachelor semester at Aarhus School of Marine and Technical Engineering through an internship at Schneider Electric. The main issue the report deals with, is “How can the ventilation systems at Aarhus University provide the most satisfying comfort, while the plants are future-proof until after 2020 compared to building regulations?” By means of an analytical description of the systems functionality, and its installation of Building Management System (BMS) the report will give an insight in the ventilation plants. To ensure that the plants are approved for use today and in the future, there is made several measurements in the buildings around the ventilation system to compare it against the requirements around comfort ventilation. This is done by using measurements to calculate e.g. air flow, noise and air change in the offices, which are relevant to the satisfaction of people who is affected by the ventilation on a daily basis.
By use of a questionnaire there has been given an assessment to how the satisfaction of the people in the offices are. Furthermore these questionnaires have been given a reason to believe that it is possible to make a bigger satisfaction, because of the use of radiators and windows to regulate the climate. In the last section of the report the different analyses will be concluded, and there will be given a couple of solutions that can be seen optional to implement to the current systems BMS.
Through the analyses it has been revealed that there is no temperature control in the buildings other than the ones in the BMS, which only a technician can change. Each room is controlled by an area box and each area box controls four rooms. Therefore the solutions given are focusing on this problem. With the first solution it is possible for the users to change the climate with use of the radiator or window, without the ventilation continuously trying to regulate to a given temperature.
The second solution gives the users opportunities to control the climate with an adjustable control panel installed in the room. Also there is put an actuator on the radiator that is used to heat up the room further than the temperature of the airflow to the room. The temperature of the airflow is still controlled by the area boxes. Additionally there is put a contact on the window that will control the damper to the room, so it prevents air to the room unless the quality is getting below requirements.
The second suggestion is then described on how it can be applied in the buildings, because it is where most personally satisfaction are provided. The conclusion that is drawn from this project is that with this new solution, it is possible to increase the happiness of the people who works in the ventilated buildings. This solution is mainly focussing on the comfort of people, and the requirements are observed for now and five years forth which makes it unlikely that Aarhus University will pay for the improvements.