Issue 3/1997

Design of jet axial-flow fan for longitudinal ventilation of tunnels

Abstract...

A summary of results from the development of axial-flow fans for longitudinal ventilation of tunnels is presented. The construction of these fans was described in VVI1/97, pp. 37 - 38.
Cyrus, V.98 - 100
Plastic piping in heating

Abstract...

The paper deals with merits and drawbacks of plastic piping applications. Basic characteristics of plastic pipes are given and on their basis the usability of plastic piping is discussed.
Bašta J.101 - 106
Calculation procedure lor CALMAC cool storage

Abstract...

Economical operation of a cooling device in air-conditioning application with water cool storage is described. An example of numerical solution is presented.
Chyský P.107 - 108
Effect of interior space zoning on smoke spreading

Abstract...

The paper deals with smoke spreading in a building which is on fire. The effect of building ventilation and zoning on the fire development is described. More details about fire propagation in a multi-fIoor building and a church are given.
Kupilík V.109 - 111
Electric motors used in heating, cooling and air-conditioning

Abstract...

Construction arrangement of squirrel-cage induction motors (also ca/led motors with short-circuit armature) is explai­ned in this paper.
Černý, V.112 - 115
Operating characteristics of induction motors

Abstract...

The paper deals with operating characteristics of squirrel-cage induction motors, three-phase and single-phase res­pectively.
Černý, V.116 - 119
The record of air-handling equipment run test and performance parameters

Abstract...

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Toman, S.120 - 121
Air handling system in a new painting shop of the Škoda factory in Mladá Boleslav

Abstract...

The paper deals with the project of ventilation in a new painting shop of the Škoda factory. The requirements of foreign investor on the project documentation, the selection of air handling elements and the realisation of the project are described. A brief description of the proposed air handling equipment and energy balance is enclosed.
Jirousek, J.123 - 125
Low-sulphur heating oils - fuel with good prospects

Abstract...

Before building a new heating system or reconstructing a boiler room the decision about heat source must be taken. The paper aims to make the choice of energy source easier, particularly for the householders without natural gas supply.
Šponar P.126 - 128
On the static suction head of a pump

Abstract...

Energy conditions in a suction system are discussed with respect to the cavitation properties of a pump. A general instruction for the static suction head evaluation is described. The static suction head determines the insta/lation of a pump in terms of its height above the lower reservoir level. The evaluation is demonstrated on three practical examples.
Bláha, J.129 - 130
Reading the heat meters remotelySynáč J., Štusák J.136 - 138