The aim of the Master’s thesis is to elaborate the design of a new assembly hall with an administrative part as a nearly zero-energy building at the level of documentation for building permit approval. The thesis is divided into three main parts.
The first part addresses the architectural and building design of the structure. The proposed building is detached, single-storey, non-basemented and founded on deep foundation piles. The structural system consists of a prefabricated reinforced concrete frame with a lightweight external envelope made of translucent and solid panels. Internal partitions are designed as gypsum plasterboard structures. The roof structure is a single-layer flat roof, with a green roof designed above the administrative part and a flat roof with PVC membrane waterproofing above the assembly hall. This part also includes a building physics assessment of the structures and the preparation of the building energy performance certificate, based on which the building was classified in energy efficiency class A.
The second part of the thesis focuses on the conceptual design of building services systems and water management. The main heat source is a cascade of gas condensing boilers supplemented by an air-to-air heat pump, which also provides cooling. Ventilation of the building is ensured by two air handling units in a balanced ventilation arrangement according to individual zones. Rainwater is collected from the roofs into a storage tank and subsequently used for irrigation of greenery on the investor’s site.
The third part of the thesis is focused on the comparison of alternative heat sources for the assembly hall from energy, environmental and economic perspectives. The evaluated variants include an air-to-water heat pump, a pellet-fired boiler and a heat exchanger connected to the district heating network. The results of the analysis demonstrated that, in terms of annual energy consumption and both investment and cumulative costs, the cascade of gas condensing boilers performs best, while in terms of non-renewable primary energy consumption and CO₂ emissions this variant is the least favourable. The assessment is based on manufacturers’ technical data and operational parameters commonly used in engineering practice. Investment costs were obtained directly from manufacturers through targeted price inquiries in order to ensure the accuracy and relevance of the economic evaluation.