Issue 1/2002

The article represents an integral information on the course and character of the heating period 2000/2001 in Prague. From the climatic quantities measured at the observatory Prague-Karlov were determined the values of quantities necessary for the calculation of the heat demand for heating and the climatological data illustrating the weather character of this period in the Czech Republic.

The article deals with boiler protection against low-temperature corrosion and boiler circuit hydraulic arrangement tied in with this corrosion. Methodology of short-circuiting pump design is presented and justified.

Presented are experimental data about turbulence in jets from ventilation air outlets. Results are useful for prediction of air movement cooling effect on human body in air conditioned space. Tezis are based on CEN recommendation for evaluation of indoor climate in ventilated spaces.

The contribution presents a complex evaluation of thermal comfort parameters inside of the room with an installed air conditioning unit.

The article explains the wording of selected articles and section of Regulation No. 151/2001 Coll., that were the object of the most frequent questions of the technical public. At the same time the contribution suggests the approach of the State Energy Inspection (SEI) to the way of respecting and inspecting the requirements provided by the Regulation.

Instead of installing the heat exchanger into the voluminous ventilation equipment the heat exchanger can be installed in the ventilation ductwork in the future. This design solution brings space savings in the ventilation machine room. A draft design of chamber heat exchanger is indicated for dwelling ventilation.

Significant changes of methodology and position of activity were not even avoided by the operators of environment engineering equipment. The operators had also to adapt themselves gradually to the rising trend of the transition to the methodology of facility management and to the fulfilling of the discriminating customers requirements by their qualified approach to equipment operation and maintenance control. They have to be able to overcome even the consequences of some faults caused by design or erection defects.

The paper points out possible applications of CFD (Computational Fluid Dynamics) in simulations of air flow, heat and mass transfer in building interiors and in ventilating or air-conditioning devices.

The article deals with problems of combustion gases exhaust ending to fasade – turbo-boiler. The calculation procedure has not yet been followed through to binding methodology. The author demonstrates by an example that it is possible to solve this problem.