The diploma thesis deals with the designing and assessment of two variants of the reconstruction of the air conditioning system for the half of 3rd floor laboratory building BioVendor – Laboratorní medicína a.s. company. The system is proposed to fulfil hygienic, operational, economic and functional requirements for indoor microclimate of laboratories. The task of this system is the transport of fresh air to interior and the covering of heat gains in summer. The equipment is also designed for the regulation of air humidity in the interior. The theoretical part deals with the application of heat penetration of solar radiation double glazed construction. Calculating and project part deals with the specific proposal of two variants of a new HV...