Methodology for determining the flow rate and temperature of generated hot water when calculating the thermal diagram of a hot water boiler room

The consumption and temperature of hot water produced by boiler units are calculated using such a quantity as the consumption of the consumed network water. The formulas represent functional dependencies connecting the obtained values not only with the consumption of heating water, but also with the consumption of hot water supplied for recirculation, for own needs and for the needs of the fuel economy. They take into account the losses of network and hot water. The formulas are obtained as a result of the joint solution of the equation for the total consumption of hot water and the equation for its partial costs.

ANALYSIS OF THE DANGER OF EMERGENCY SITUATIONS IN THE CONSTRUCTION AND OPERATION OF GAS BOILER HOUSES

Целью исследований является анализ возможных аварийных ситуаций при разгерметизации газопровода, прилегающего к котельной и находящегося в ней, а также определение горизонтального радиуса действия ключевых поражающих факторов при аварии. В качестве примера произведен расчет аварийной ситуации для участка газопровода среднего давления. Определены значения максимального избыточного давления, импульса фазы сжатия воздушных волн давления и радиусов зон поражения при взрыве топливо-воздушной смеси. Даны рекомендации для профилактики возникновения аварийной ситуации. The purpose of the research is to analyze possible emergency situations during depressurization of the gas pipeline adjacent to the boiler room and located in it, as well as to determine the horizontal radius of action of the key damaging factors in case of an accident. As an example, an emergency situation was calculated for a section of a medium-pressure gas pipeline. The values of the maximum overpressure, the pulse of the compression phase of the air pressure waves, and the radii of the affected areas during the explosion of the fuel-air mixture are determined. Recommendations for the prevention of an emergency are given.

EVALUATION OF THE USAGE OF GEOTHERMAL ENERGY IN THE HOT WATER BOILER ROOM STRED I.

The dominant source of energy in the hot water boiler house Stred I. in Velky Meder is geothermal energy, which is drawn from the VM -1 well, which was drilled in its courtyard in 2015. Based on documents and personal inspections of this boiler room, I created a geothermal circuit scheme of this hot water boiler room, where the experimental measurements took place. Part of this paper is a diagram of the geothermal circuit, a comparison of measured values ​​within a selected characteristic day for summer and winter operation in 2020. Finally, the operation of the usage of geothermal energy in the hot water boiler room Stred I. is evaluated on all these indicators.

Romeo and Juliet in late-communist Poland: Deconstructing the myth of Shakespeare’s play

Romeo i Julia z Saskiej Kępy (‘Romeo and Juliet from Saska Kępa’) is a Polish film from 1988, which showcases the idea(l) of true love in late-communist Warsaw. He (Leopold) is an alcohol-wasted, promising painter, she (Sabina) comes to Warsaw from the country and finds employment as a domestic help. They find their love space in a boiler-room in a ruined tenement house in the prestigious and elitist district of Saska Kępa in Warsaw. The film is an adaptation of Shakespeare’s play of sorts; although there are references to Shakespeare’s tragedy and parallels are more or less detectable, the film rather addresses the status of the play in the Polish culture of the late 1980s, in the context of the drab reality of Poland just before the transition in 1989 (not that it anticipates it). Thus, it can be possibly classified as what Sanders (2006) views as appropriation. Our aim is to explore the functioning and role of the Romeo and Juliet myth in the (popular) culture of decadent communist Poland and its treatment in Skórzewski’s film: how certain motifs from the play, especially those associated with the myth of ideal love, were developed in a modernized version of Shakespeare’s tragedy, thus reflecting certain topical problems, which the director addresses appropriating this myth. Rather than showing love between the two figures impossible due to the rivalry between two families/opposing groups, Skórzewski finds obstacles for such love in the drab reality of the late 1980s and social differences between the two lovers. The director makes them mature people, neither are they stunningly beautiful, nor living a comfortable life.

Method of the boiler room ventilation system efficiency experimental determination

The issue of the normative air exchange ensuring in the premises of the boiler houses is extremely important. The article presents the results of theoretical and experimental studies of air velocity determination in the distribution of air by round and compact jets in the boiler room. Graphical and analytical dependences are given. The research results substantiate the higher accuracy of the average air flow velocity determination in small boiler rooms. The aim of the work is to develop a method for experimental determination of the efficiency of the ventilation system in the boiler room; to increase of the accuracy of the average velocity determination of the round and the compact air jets in the plane of the supply nozzle to ensure the normative air exchange of the boiler room and to substantiate of the calculation method. The characteristics and patterns of development of round and compact air jets in the premises are established and the calculated dependences are obtained. It is substantiated that the application of the proposed method will significantly increase the accuracy of air exchange determination in the boiler rooms to ensure the required value in accordance with regulatory requirements. Recommendations for the practical determination of the calculated values to ensure proper ventilation of the boiler rooms are given.