TZB-info - Gateway to the world of specialized information

TZB-info is an Internet resource specialising in information on construction, energy savings, and the related fields collectively referred to as mechanical and electrical systems usually known as building services (in Czech abbreviated as TZB). Its primary focus lies within the construction of buildings and energy issues related thereto. Whether you're looking for heating, electricity, heat loss reduction or building efficiency, the portal offers up-to-date information on the developments in those fields every day. The information presented by TZB-info is carefully selected and edited, serving a diverse audience of professionals ranging from designers to installers but also the general public. TZB-info records 650,000 visits every month. read whole text

Latest reviewed editorial research papers in the field of building services engineering


Principles of the Safety Valve Installation

24.4.2017 | Ing. Roman Vavřička, Ph.D., ČVUT v Praze, Fakulta strojní, Ústav techniky prostředí, Časopis Větrání vytápění instalace
The article deals with the issue of safety valves installation for water heaters. Neglecting of the installation conditions often causes damage to the installed appliance, or (as shown in the paper) loss on the water and sewer charges in the case of a safety valve installed in the water heater safety group.
1 comment, 26.04.2017 09:23
Facility management

Temperature measurements by thermocouples during fire tests

24.4.2017 | Ing. Otto Dvořák, Ph.D., ČVUT Praha, pracoviště UCEEB, Ing. Jan Koller, Ph.D., ČVUT Praha, Fakulta elektotechnická (FEL)
The paper describes briefly the problems of temperature measurements during fire tests. To verify the standard requirement an experiment was conducted with three K type thermocouples (TC) of different diameters of wires and lengths of connected cables. TCs were inserted gradually into the el. heating furnace heated at the temperature of 800 ° C with records over time until reaching maximal steady state temperature; TCs were subsequently removed from the furnace and again with recording temperatures during cooling to the room temperature. The results are shown in the table and graphs. The experiments have confirmed that the sensitivity /response of TC to fluctuating temperatures of the gaseous medium depends on the diameter of the TC. It is obvious that these findings could have practical use in the field of fire protection.


Heating | Ventilating and Air-Conditioning | Water and Drainage | Renewable Energy | Electrical Engineering | Energetics

Latest reviewed editorial research papers in the field of construction

Dřevo-betonový strop - spřažená konstrukceShell Construction

Kompozitní dřevobetonové stropní konstrukce s mechanickými spojovacími prostředky

24.4.2017 | doc. Ing. Petr Kuklík, CSc., Ing. Anna Kuklíková, Ph.D., Ing. arch. Bc. Anna Gregorová, ČVUT v Praze, Fakulta stavební
Timber-concrete composite structures are becoming very important in the housing sector. They have many advantages compared to traditional timber floors and are widely used as an effective method for refurbishment of existing timber floors. Due to the many benefits they are now being used more in new multi-storey timber framed houses. This paper deals with behaviour of timber-concrete composite floor structures with mechanical connection systems. The paper is focused to two different connection systems: using dowel-type fasteners and using special surface connector. Analytical model of dowel-type connection system is based on modification of Johansen´s equations valid for timber to timber connections. Behaviour of connection system with special surface connector is evaluated by experiments. The paper deals also with the behaviour of timber-concrete composite floor structures under fire conditions.
Industrial building, průmyslová budovaLow Energy Buildings

Energy performance of industrial buildings – PART 3 – NEARLY ENERGY ZERO BUILDING

24.4.2017 | Ing. Jiří Cihlář, CEVRE Consultants s.r.o.
Mandatory standard of building design – nearly energy zero starts for larger industrial buildings from 1st January 2018. This will have a major impact, especially in the design of the building envelope. This article analyzes whether the current setting of requirements of this building standard is technically and economically achievable. Analysis is based on typical industrial building.


Shell Construction | Insulation, Roofs, Facades | Windows, Doors | Floors, Partition Walls, Surfaces | Low Energy Buildings | Wooden Buildings | Building Regeneration | Building Physics

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