7 research outputs found
Techno-economic analysis of heat exchangers with parallel helical tube coils
The paper deals with the investment and exploitation costs for shell and tube heat exchangers with parallel helical tube coils. The most common correlations for estimating prices of shell and tube heat exchangers found in open literature were tested using the market data for a comparison and they have shown significant deviations. A new correlation for calculating prices of heat exchangers with helical tubes (when the shell is made of carbon steel and the helical tube of copper) was determined. In addition, the costs of electricity needed to drive pumps, as well as the costs of chemical cleaning of the apparatuses with inhibited mineral acids were estimated
Genetic diversity of a Serbian grapevine germplasm collection based on morphoagronomic characteristics
The objective of this study was to evaluate diversity and relationships among grapevine cultivars from the Serbian gene bank in Sremski Karlovci, and to identify the most useful variables for discrimination. A total of 54 grapevine cultivars have been studied. During the period 2000-2005, twelve quantitative and qualitative characteristics were evaluated using OIV categories to each trait. Characterization was done using multivariate statistical analyses: cluster and principal component analysis (PCA), Based on cluster analysis cultivars divided into three major groups and the clustering pattern was related to the classical eco-geographical grouping: occidentalis, pontica and orientalis. Beside geographic origin clustering position of cultivars throughout the dendrogram was related to main uses. The major part (70.1%) of the total variation presented was explained by four principal components. PC1 is highly correlated with the bunch and berry size and PC2 with the density of prostrate hairs of young shoot tip and the density of prostrate hairs between veins on the lower side of mature leaf. The overall arrangement of cultivars suggests considerable phenotypical (and presumably genetic) variability in studied germplasm collection. Furthermore, obtained results may be useful for further utilization of available genetic resources in gene bank managers, growing and breeding
Techno-economic analysis of heat exchangers with parallel helical tube coils
U radu su prikazani investicijski i eksploatacijski troΕ‘kovi kod bubnjastih izmjenjivaΔa topline s paralelnim zavojnim cijevima. Provedena je statistiΔka analiza najΔeΕ‘Δe rabljenih korelacija iz otvorenih literaturnih izvora za odreΔivanje cijena bubnjastih izmjenjivaΔa topline s trΕΎiΕ‘nim podacima aparata s kojom je utvrΔeno da pokazuju znaΔajna odstupanja i da se ne mogu s dovoljnom pouzdanoΕ‘Δu koristiti za navedeni tip aparata. Uspostavljena je nova korelacija za procjenu cijena aparata sa zavojnim cijevima (za sluΔaj kada je omotaΔ aparata izraΔen od ugljiΔnog Δelika, a cijevni snop od bakra). Procijenjeni su troΕ‘kovi elektriΔne energije za pogon pumpi kao i troΕ‘kovi kemijskog ΔiΕ‘Δenja aparata inhibiranom klorovodiΔnom i sumpornom kiselinom.The paper deals with the investment and exploitation costs for shell and tube heat exchangers with parallel helical tube coils. The most common correlations for estimating prices of shell and tube heat exchangers found in open literature were tested using the market data for a comparison and they have shown significant deviations. A new correlation for calculating prices of heat exchangers with helical tubes (when the shell is made of carbon steel and the helical tube of copper) was determined. In addition, the costs of electricity needed to drive pumps, as well as the costs of chemical cleaning of the apparatuses with inhibited mineral acids were estimated
Risk quantification in industrial product development projects
ΠΡΠ΅Π΄ΠΌΠ΅Ρ Π΄ΠΎΠΊΡΠΎΡΡΠΊΠ΅ Π΄ΠΈΡΠ΅ΡΡΠ°ΡΠΈΡΠ΅ ΡΠ΅ ΠΏΠΎΡΡΠ°Π²ΠΊΠ° ΠΎΡΠΈΠ³ΠΈΠ½Π°Π»Π½ΠΎΠ³ ΠΌΠΎΠ΄Π΅Π»Π° Π·Π°
ΠΊΠ²Π°Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΈΡΡ ΡΠΈΠ·ΠΈΠΊΠ° Π½Π° ΠΏΡΠΎΡΠ΅ΠΊΡΠΈΠΌΠ° ΠΎΡΠ²Π°ΡΠ°ΡΠ° ΠΈΠ½Π΄ΡΡΡΡΠΈΡΡΠΊΠΈΡ
ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄Π°, ΠΊΠΎΡΠ° ΡΠ΅
ΡΡΠ»Π΅Π΄ΠΈΠ»Π° Π½Π°ΠΊΠΎΠ½ ΡΠΈΡΡΠ΅ΠΌΠ°ΡΠΈΠ·Π°ΡΠΈΡΠ΅ ΠΏΠΎΡΡΠΎΡΠ΅ΡΠΈΡ
Π·Π½Π°ΡΠ° ΠΈΠ· ΠΎΠ±Π»Π°ΡΡΠΈ ΡΠΏΡΠ°Π²ΡΠ°ΡΠ°
ΠΏΡΠΎΡΠ΅ΠΊΡΠ½ΠΈΠΌ ΡΠΈΠ·ΠΈΡΠΈΠΌΠ° ΡΠ· Π°Π΄Π°ΠΏΡΠ°ΡΠΈΡΡ ΠΈΡΡΠΈΡ
Π½Π° ΠΊΠΎΠ½ΡΠ΅ΠΏΡ ΡΠ°Π·Π²ΠΎΡΠ° ΠΈΠ½Π΄ΡΡΡΡΠΈΡΡΠΊΠΎΠ³
ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄Π°, ΠΊΡΠΎΠ· ΠΏΡΠ°ΡΠ΅ΡΠ΅ ΠΏΡΠΎΡΠ΅ΠΊΡΠ½ΠΈΡ
ΡΠ΅Π·ΡΠ»ΡΠ°ΡΠ° - ΡΠ΅Ρ
Π½ΠΈΡΠΊΠΈΡ
ΠΊΠ°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠ°,
Π²ΡΠ΅ΠΌΠ΅Π½Π° (ΠΏΠ»Π°Π½Π°) ΠΈ ΡΡΠΎΡΠΊΠΎΠ²Π°, Π° ΡΠ° Π½ΠΎΠ²ΠΎΡΡΠΏΠΎΡΡΠ°Π²ΡΠ΅Π½ΠΎΠΌ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ»ΠΎΠ³ΠΈΡΠΎΠΌ
ΠΊΠ²Π°Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΈΡΠ΅ ΡΠΈΠ·ΠΈΠΊΠ°. Π Π°Π·Π²ΠΎΡ ΠΌΠΎΠ΄Π΅Π»Π° ΠΊΠ°ΠΎ ΡΠ²ΠΎΡ ΡΠ»ΡΠΈΠΌΠ°ΡΠΈΠ²Π½ΠΈ ΡΠΈΡ ΠΈΠΌΠ° ΠΏΠΎΡΡΠ΅Π±Ρ Π΄Π°
ΡΠ½Π°ΠΏΡΠ΅Π΄ΠΈ ΠΏΡΠΎΡΠ΅ΡΠ΅ ΠΎΡΠ²Π°ΡΠ°ΡΠ° ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄Π° Ρ Π΄ΠΎΠΌΠ°ΡΠΈΠΌ ΠΈΠ½Π΄ΡΡΡΡΠΈΡΡΠΊΠΈΠΌ ΠΏΡΠ΅Π΄ΡΠ·Π΅ΡΠΈΠΌΠ°.
Π£ ΡΠΈΡΡ Π²Π΅ΡΠΈΡΠΈΠΊΠ°ΡΠΈΡΠ΅ ΠΏΠΎΡΡΠ°Π²ΡΠ΅Π½ΠΎΠ³ ΠΌΠΎΠ΄Π΅Π»Π° ΡΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΡΠ΅ Π΅ΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»Π½ΠΎ
ΠΈΡΡΡΠ°ΠΆΠΈΠ²Π°ΡΠ΅ Π½Π° ΡΠ·ΠΎΡΠΊΡ 52 ΠΏΡΠΎΡΠ΅ΠΊΡΠ° ΠΎΡΠ²Π°ΡΠ°ΡΠ° ΠΈΠ½Π΄ΡΡΡΡΠΈΡΡΠΊΠΎΠ³ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄Π° ΠΈΡΡΠΎΠ³ ΡΠΈΠΏΠ°.
ΠΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»Π½ΠΎ ΡΡ ΠΎΠ΄ΡΠ΅ΡΠ΅Π½Π΅ Π²Π΅Π»ΠΈΡΠΈΠ½Π΅ Π½Π΅ΠΎΠΏΡ
ΠΎΠ΄Π½Π΅ Π·Π° ΠΈΠ·Π²Π΅Π΄Π΅Π½ΠΈ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠΊΠΈ
ΠΌΠΎΠ΄Π΅Π», ΡΡΠ°ΡΠΈΡΡΠΈΡΠΊΠΈ ΠΎΠ±ΡΠ°ΡΠ΅Π½Π΅ ΠΏΡΠΈΠΌΠ΅Π½ΠΎΠΌ ΠΌΠ΅ΡΠΎΠ΄Π΅ Π³Π»Π°Π²Π½ΠΈΡ
ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Π°ΡΠ°, Π° Π·Π°ΡΠΈΠΌ ΡΠ΅
ΠΈΠ·Π²Π΅Π΄Π΅Π½Π° ΠΠΎΠ½ΡΠ΅ ΠΠ°ΡΠ»ΠΎ ΡΠΈΠΌΡΠ»Π°ΡΠΈΡΠ° Π΄ΠΎΠ±ΠΈΡΠ΅Π½ΠΈΡ
ΡΠ΅Π·ΡΠ»ΡΠ°ΡΠ° ΠΈ Π°Π½Π°Π»ΠΈΠ·Π° ΠΎΡΠ΅ΡΡΠΈΠ²ΠΎΡΡΠΈ Ρ
ΡΠΈΡΡ ΠΏΡΠΎΠ²Π΅ΡΠ΅ ΠΌΠΎΠ΄Π΅Π»Π°. Π£ ΠΌΠΎΠ΄Π΅Π»Ρ ΡΠ΅ ΠΏΡΠΎΡΠ΅Π½Π° ΡΠΈΠ·ΠΈΠΊΠ° ΠΏΡΠ΅Π΄ΡΡΠ°Π²ΡΠ΅Π½Π° ΠΈΠ· ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π΅
ΠΏΡΠΎΡΠ΅ΠΊΡΠ½ΠΎΠ³ ΡΠΈΠΌΠ°, ΡΠ°ΠΊΠΎ Π΄Π° ΡΡ ΠΎΠ΄Π°Π±ΡΠ°Π½Π΅ ΡΠ΅Ρ
Π½ΠΈΠΊΠ΅ Π·Π° ΠΏΡΠΎΡΠ΅Π½Ρ ΡΠ°ΠΊΡΠΎΡΠ° ΡΠΈΠ·ΠΈΠΊΠ°
ΠΏΡΠΈΠ»Π°Π³ΠΎΡΠ΅Π½Π΅ ΠΊΠΎΠΌΠΏΠ΅ΡΠ΅Π½ΡΠΈΡΠ°ΠΌΠ° ΠΏΡΠΎΡΠ΅ΠΊΡΠ½ΠΎΠ³ ΡΠΈΠΌΠ° ΠΈ ΠΏΡΠ΅Π΄ΡΡΠ°Π²ΡΠ°ΡΡ Π½Π°Π΄ΠΎΠ³ΡΠ°Π΄ΡΡ
ΡΠ΅Π΄ΠΎΠ²Π½ΠΈΠΌ ΠΏΡΠΎΡΠ΅ΠΊΡΠ½ΠΈΠΌ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈΠΌΠ°. ΠΠ° ΠΎΠ²Π°Ρ Π½Π°ΡΠΈΠ½ ΠΎΡΠΈΠ³ΡΡΠ°Π½Π° ΡΠ΅ Π΅ΡΠΈΠΊΠ°ΡΠ½ΠΎΡΡ
ΡΠΏΡΠ°Π²ΡΠ°ΡΠ° ΠΏΡΠΎΡΠ΅ΠΊΡΠ½ΠΈΠΌ ΡΠΈΠ·ΠΈΡΠΈΠΌΠ° ΡΠΏΠΎΡΡΠ΅Π±ΠΎΠΌ Π΄ΠΎΡΡΡΠΏΠ½ΠΈΡ
ΡΠ΅ΡΡΡΡΠ°, Π±Π΅Π· ΡΠ³ΡΠΎΠΆΠ°Π²Π°ΡΠ°
ΠΎΡΡΠ°Π»ΠΈΡ
ΠΏΡΠΎΡΠ΅ΠΊΡΠ½ΠΈΡ
Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ.
ΠΡΠΈΠΌΠ΅Π½Π° ΠΌΠΎΠ΄Π΅Π»Π° ΠΎΠΌΠΎΠ³ΡΡΠ°Π²Π° ΡΠΈΡΡΠ΅ΠΌΡΠΊΠΈ ΠΏΡΠΈΡΡΡΠΏ ΠΊΠ²Π°Π½ΡΠΈΡΠ°ΡΠΈΠ²Π½ΠΎΡ Π°Π½Π°Π»ΠΈΠ·ΠΈ
ΠΏΡΠΎΡΠ΅ΠΊΡΠ½ΠΈΡ
ΡΠΈΠ·ΠΈΠΊΠ° Ρ ΠΏΡΠ΅Π΄ΡΠ·Π΅ΡΠΈΠΌΠ°, ΠΊΠΎΡΠ° ΠΊΠ°ΠΎ ΡΠ²ΠΎΡ ΠΏΠΎΡΠ»ΠΎΠ²Π½ΠΈ ΠΏΠΎΠ΄ΡΡ
Π²Π°Ρ ΡΠ΅Π°Π»ΠΈΠ·ΡΡΡ
ΠΎΡΠ²Π°ΡΠ°ΡΠ΅ ΠΈΠ½Π΄ΡΡΡΡΠΈΡΡΠΊΠΎΠ³ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄Π°.
Π Π΅Π·ΡΠ»ΡΠ°ΡΠΈ ΠΈΡΡΡΠ°ΠΆΠΈΠ²Π°ΡΠ°, ΠΊΠ°ΠΎ ΠΈ ΡΠΈΡ
ΠΎΠ²Π° Π³Π΅Π½Π΅ΡΠ°Π»ΠΈΠ·Π°ΡΠΈΡΠ°, ΠΏΠΎΡΠ²ΡΡΠ΅Π½Π° Π΄ΠΎΠΊΠ°Π·ΠΎΠΌ
ΠΎΡΠ½ΠΎΠ²Π½ΠΈΡ
ΠΈΡΡΡΠ°ΠΆΠΈΠ²Π°ΡΠΊΠΈΡ
Ρ
ΠΈΠΏΠΎΡΠ΅Π·Π°, ΠΊΠΎΡΠ΅ ΡΠ΅ ΠΎΠ΄Π½ΠΎΡΠ΅ Π½Π° ΡΠΊΡΠΏΠ°Π½ ΠΈΠ·Π½ΠΎΡ ΡΠΈΠ·ΠΈΠΊΠ° ΠΏΡΠ΅ΠΌΠ°
ΡΠ²Π°ΠΊΠΎΠΌ ΠΎΠ΄ ΠΏΡΠΎΡΠ΅ΠΊΡΠ½ΠΈΡ
ΡΠ΅Π·ΡΠ»ΡΠ°ΡΠ° Ρ Π²ΠΈΠ΄Ρ ΠΏΠ»Π°Π½Π°, Π±ΡΡΠ΅ΡΠ° ΠΈ ΡΠ΅Ρ
Π½ΠΈΡΠΊΠΈΡ
ΠΊΠ°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠ°
ΠΏΡΠΎΡΠ΅ΠΊΡΠ°, ΠΏΡΡΠΆΠ°ΡΡ ΡΠ°ΡΠ°Π½ ΡΠ²ΠΈΠ΄ Ρ ΡΠΈΠ·ΠΈΠΊΠ΅ ΠΏΡΠΈΡΡΡΠ½Π΅ ΠΏΡΠΈΠ»ΠΈΠΊΠΎΠΌ ΠΏΡΠΎΡΠ΅ΡΠ° ΠΎΡΠ²Π°ΡΠ°ΡΠ°
II
ΠΈΠ½Π΄ΡΡΡΡΠΈΡΡΠΊΠΎΠ³ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄Π° Ρ ΠΌΠ°Π»ΠΎΠΌ ΠΈ ΡΡΠ΅Π΄ΡΠ΅ΠΌ ΠΏΡΠ΅Π΄ΡΠ·Π΅ΡΡ ΠΊΠ°ΠΎ ΠΈ ΡΠΈΡ
ΠΎΠ²ΠΎΠΌ ΡΡΠΈΡΠ°ΡΡ
Π½Π° Π΄Π΅ΡΠΈΠ½ΠΈΡΠ°Π½Π΅ ΠΏΡΠΎΡΠ΅ΠΊΡΠ½Π΅ ΡΠΈΡΠ΅Π²Π΅...The doctoral dissertation aims to propose an original model for risk
quantification in industrial product development projects. The model is built through the
systematization of the existing body of knowledge in the field of project risk
management and its application to the concept of industrial product development along
with monitoring project results β technical performances, schedule and costs β using the
newly-established methodology of risk quantification. The primary motivation behind
the development of this model is to contribute to the process of product development in
domestic industrial enterprises.
In order to verify the proposed model, the author has conducted experimental
research on the sample of fifty-two projects of development of industrial product of the
same kind. The sizes required for the derived mathematical model were experimentally
determined and statistically processed by means of principal component analysis.
Afterwards, Monte Carlo Simulation of the obtained results, as well as the sensitivity
analysis, was conducted in order to verify the model. In the model, the risk assessment
is presented from the perspective of the project team and is the upgrade of the standard
project activities. Thus, the efficiency of managing project risks is secured by using the
available resources without jeopardizing the remaining project activities.
The implementation of this model enables a systematic approach to the
quantitative analysis of project risks in enterprises whose business endeavor is industrial
product development.
The results of the research, as well as their generalization verified by proving the
main research hypotheses, pertain to the total risk related to each of the project results,
i.e. plan, budget and technical performances of the project. They, accordingly, provide a
clear insight into the risks present in the process of industrial product development in
small and medium-sized enterprises, as well as into their impact on the defined project
goals..
ΠΠ²Π°Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΈΡΠ° ΡΠΈΠ·ΠΈΠΊΠ° Π½Π° ΠΏΡΠΎΡΠ΅ΠΊΡΠΈΠΌΠ° ΠΎΡΠ²Π°ΡΠ°ΡΠ° ΠΈΠ½Π΄ΡΡΡΡΠΈΡΡΠΊΠΎΠ³ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄Π°
The doctoral dissertation aims to propose an original model for risk quantification in industrial product development projects. The model is built through the systematization of the existing body of knowledge in the field of project risk management and its application to the concept of industrial product development along with monitoring project results β technical performances, schedule and costs β using the newly-established methodology of risk quantification. The primary motivation behind the development of this model is to contribute to the process of product development in domestic industrial enterprises. In order to verify the proposed model, the author has conducted experimental research on the sample of fifty-two projects of development of industrial product of the same kind. The sizes required for the derived mathematical model were experimentally determined and statistically processed by means of principal component analysis. Afterwards, Monte Carlo Simulation of the obtained results, as well as the sensitivity analysis, was conducted in order to verify the model. In the model, the risk assessment is presented from the perspective of the project team and is the upgrade of the standard project activities. Thus, the efficiency of managing project risks is secured by using the available resources without jeopardizing the remaining project activities. The implementation of this model enables a systematic approach to the quantitative analysis of project risks in enterprises whose business endeavor is industrial product development. The results of the research, as well as their generalization verified by proving the main research hypotheses, pertain to the total risk related to each of the project results, i.e. plan, budget and technical performances of the project. They, accordingly, provide a clear insight into the risks present in the process of industrial product development in small and medium-sized enterprises, as well as into their impact on the defined project goals...ΠΡΠ΅Π΄ΠΌΠ΅Ρ Π΄ΠΎΠΊΡΠΎΡΡΠΊΠ΅ Π΄ΠΈΡΠ΅ΡΡΠ°ΡΠΈΡΠ΅ ΡΠ΅ ΠΏΠΎΡΡΠ°Π²ΠΊΠ° ΠΎΡΠΈΠ³ΠΈΠ½Π°Π»Π½ΠΎΠ³ ΠΌΠΎΠ΄Π΅Π»Π° Π·Π° ΠΊΠ²Π°Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΈΡΡ ΡΠΈΠ·ΠΈΠΊΠ° Π½Π° ΠΏΡΠΎΡΠ΅ΠΊΡΠΈΠΌΠ° ΠΎΡΠ²Π°ΡΠ°ΡΠ° ΠΈΠ½Π΄ΡΡΡΡΠΈΡΡΠΊΠΈΡ
ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄Π°, ΠΊΠΎΡΠ° ΡΠ΅ ΡΡΠ»Π΅Π΄ΠΈΠ»Π° Π½Π°ΠΊΠΎΠ½ ΡΠΈΡΡΠ΅ΠΌΠ°ΡΠΈΠ·Π°ΡΠΈΡΠ΅ ΠΏΠΎΡΡΠΎΡΠ΅ΡΠΈΡ
Π·Π½Π°ΡΠ° ΠΈΠ· ΠΎΠ±Π»Π°ΡΡΠΈ ΡΠΏΡΠ°Π²ΡΠ°ΡΠ° ΠΏΡΠΎΡΠ΅ΠΊΡΠ½ΠΈΠΌ ΡΠΈΠ·ΠΈΡΠΈΠΌΠ° ΡΠ· Π°Π΄Π°ΠΏΡΠ°ΡΠΈΡΡ ΠΈΡΡΠΈΡ
Π½Π° ΠΊΠΎΠ½ΡΠ΅ΠΏΡ ΡΠ°Π·Π²ΠΎΡΠ° ΠΈΠ½Π΄ΡΡΡΡΠΈΡΡΠΊΠΎΠ³ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄Π°, ΠΊΡΠΎΠ· ΠΏΡΠ°ΡΠ΅ΡΠ΅ ΠΏΡΠΎΡΠ΅ΠΊΡΠ½ΠΈΡ
ΡΠ΅Π·ΡΠ»ΡΠ°ΡΠ° - ΡΠ΅Ρ
Π½ΠΈΡΠΊΠΈΡ
ΠΊΠ°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠ°, Π²ΡΠ΅ΠΌΠ΅Π½Π° (ΠΏΠ»Π°Π½Π°) ΠΈ ΡΡΠΎΡΠΊΠΎΠ²Π°, Π° ΡΠ° Π½ΠΎΠ²ΠΎΡΡΠΏΠΎΡΡΠ°Π²ΡΠ΅Π½ΠΎΠΌ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ»ΠΎΠ³ΠΈΡΠΎΠΌ ΠΊΠ²Π°Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΈΡΠ΅ ΡΠΈΠ·ΠΈΠΊΠ°. Π Π°Π·Π²ΠΎΡ ΠΌΠΎΠ΄Π΅Π»Π° ΠΊΠ°ΠΎ ΡΠ²ΠΎΡ ΡΠ»ΡΠΈΠΌΠ°ΡΠΈΠ²Π½ΠΈ ΡΠΈΡ ΠΈΠΌΠ° ΠΏΠΎΡΡΠ΅Π±Ρ Π΄Π° ΡΠ½Π°ΠΏΡΠ΅Π΄ΠΈ ΠΏΡΠΎΡΠ΅ΡΠ΅ ΠΎΡΠ²Π°ΡΠ°ΡΠ° ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄Π° Ρ Π΄ΠΎΠΌΠ°ΡΠΈΠΌ ΠΈΠ½Π΄ΡΡΡΡΠΈΡΡΠΊΠΈΠΌ ΠΏΡΠ΅Π΄ΡΠ·Π΅ΡΠΈΠΌΠ°. Π£ ΡΠΈΡΡ Π²Π΅ΡΠΈΡΠΈΠΊΠ°ΡΠΈΡΠ΅ ΠΏΠΎΡΡΠ°Π²ΡΠ΅Π½ΠΎΠ³ ΠΌΠΎΠ΄Π΅Π»Π° ΡΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΡΠ΅ Π΅ΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»Π½ΠΎ ΠΈΡΡΡΠ°ΠΆΠΈΠ²Π°ΡΠ΅ Π½Π° ΡΠ·ΠΎΡΠΊΡ 52 ΠΏΡΠΎΡΠ΅ΠΊΡΠ° ΠΎΡΠ²Π°ΡΠ°ΡΠ° ΠΈΠ½Π΄ΡΡΡΡΠΈΡΡΠΊΠΎΠ³ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄Π° ΠΈΡΡΠΎΠ³ ΡΠΈΠΏΠ°. ΠΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»Π½ΠΎ ΡΡ ΠΎΠ΄ΡΠ΅ΡΠ΅Π½Π΅ Π²Π΅Π»ΠΈΡΠΈΠ½Π΅ Π½Π΅ΠΎΠΏΡ
ΠΎΠ΄Π½Π΅ Π·Π° ΠΈΠ·Π²Π΅Π΄Π΅Π½ΠΈ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠΊΠΈ ΠΌΠΎΠ΄Π΅Π», ΡΡΠ°ΡΠΈΡΡΠΈΡΠΊΠΈ ΠΎΠ±ΡΠ°ΡΠ΅Π½Π΅ ΠΏΡΠΈΠΌΠ΅Π½ΠΎΠΌ ΠΌΠ΅ΡΠΎΠ΄Π΅ Π³Π»Π°Π²Π½ΠΈΡ
ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Π°ΡΠ°, Π° Π·Π°ΡΠΈΠΌ ΡΠ΅ ΠΈΠ·Π²Π΅Π΄Π΅Π½Π° ΠΠΎΠ½ΡΠ΅ ΠΠ°ΡΠ»ΠΎ ΡΠΈΠΌΡΠ»Π°ΡΠΈΡΠ° Π΄ΠΎΠ±ΠΈΡΠ΅Π½ΠΈΡ
ΡΠ΅Π·ΡΠ»ΡΠ°ΡΠ° ΠΈ Π°Π½Π°Π»ΠΈΠ·Π° ΠΎΡΠ΅ΡΡΠΈΠ²ΠΎΡΡΠΈ Ρ ΡΠΈΡΡ ΠΏΡΠΎΠ²Π΅ΡΠ΅ ΠΌΠΎΠ΄Π΅Π»Π°. Π£ ΠΌΠΎΠ΄Π΅Π»Ρ ΡΠ΅ ΠΏΡΠΎΡΠ΅Π½Π° ΡΠΈΠ·ΠΈΠΊΠ° ΠΏΡΠ΅Π΄ΡΡΠ°Π²ΡΠ΅Π½Π° ΠΈΠ· ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π΅ ΠΏΡΠΎΡΠ΅ΠΊΡΠ½ΠΎΠ³ ΡΠΈΠΌΠ°, ΡΠ°ΠΊΠΎ Π΄Π° ΡΡ ΠΎΠ΄Π°Π±ΡΠ°Π½Π΅ ΡΠ΅Ρ
Π½ΠΈΠΊΠ΅ Π·Π° ΠΏΡΠΎΡΠ΅Π½Ρ ΡΠ°ΠΊΡΠΎΡΠ° ΡΠΈΠ·ΠΈΠΊΠ° ΠΏΡΠΈΠ»Π°Π³ΠΎΡΠ΅Π½Π΅ ΠΊΠΎΠΌΠΏΠ΅ΡΠ΅Π½ΡΠΈΡΠ°ΠΌΠ° ΠΏΡΠΎΡΠ΅ΠΊΡΠ½ΠΎΠ³ ΡΠΈΠΌΠ° ΠΈ ΠΏΡΠ΅Π΄ΡΡΠ°Π²ΡΠ°ΡΡ Π½Π°Π΄ΠΎΠ³ΡΠ°Π΄ΡΡ ΡΠ΅Π΄ΠΎΠ²Π½ΠΈΠΌ ΠΏΡΠΎΡΠ΅ΠΊΡΠ½ΠΈΠΌ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈΠΌΠ°. ΠΠ° ΠΎΠ²Π°Ρ Π½Π°ΡΠΈΠ½ ΠΎΡΠΈΠ³ΡΡΠ°Π½Π° ΡΠ΅ Π΅ΡΠΈΠΊΠ°ΡΠ½ΠΎΡΡ ΡΠΏΡΠ°Π²ΡΠ°ΡΠ° ΠΏΡΠΎΡΠ΅ΠΊΡΠ½ΠΈΠΌ ΡΠΈΠ·ΠΈΡΠΈΠΌΠ° ΡΠΏΠΎΡΡΠ΅Π±ΠΎΠΌ Π΄ΠΎΡΡΡΠΏΠ½ΠΈΡ
ΡΠ΅ΡΡΡΡΠ°, Π±Π΅Π· ΡΠ³ΡΠΎΠΆΠ°Π²Π°ΡΠ° ΠΎΡΡΠ°Π»ΠΈΡ
ΠΏΡΠΎΡΠ΅ΠΊΡΠ½ΠΈΡ
Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ. ΠΡΠΈΠΌΠ΅Π½Π° ΠΌΠΎΠ΄Π΅Π»Π° ΠΎΠΌΠΎΠ³ΡΡΠ°Π²Π° ΡΠΈΡΡΠ΅ΠΌΡΠΊΠΈ ΠΏΡΠΈΡΡΡΠΏ ΠΊΠ²Π°Π½ΡΠΈΡΠ°ΡΠΈΠ²Π½ΠΎΡ Π°Π½Π°Π»ΠΈΠ·ΠΈ ΠΏΡΠΎΡΠ΅ΠΊΡΠ½ΠΈΡ
ΡΠΈΠ·ΠΈΠΊΠ° Ρ ΠΏΡΠ΅Π΄ΡΠ·Π΅ΡΠΈΠΌΠ°, ΠΊΠΎΡΠ° ΠΊΠ°ΠΎ ΡΠ²ΠΎΡ ΠΏΠΎΡΠ»ΠΎΠ²Π½ΠΈ ΠΏΠΎΠ΄ΡΡ
Π²Π°Ρ ΡΠ΅Π°Π»ΠΈΠ·ΡΡΡ ΠΎΡΠ²Π°ΡΠ°ΡΠ΅ ΠΈΠ½Π΄ΡΡΡΡΠΈΡΡΠΊΠΎΠ³ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄Π°. Π Π΅Π·ΡΠ»ΡΠ°ΡΠΈ ΠΈΡΡΡΠ°ΠΆΠΈΠ²Π°ΡΠ°, ΠΊΠ°ΠΎ ΠΈ ΡΠΈΡ
ΠΎΠ²Π° Π³Π΅Π½Π΅ΡΠ°Π»ΠΈΠ·Π°ΡΠΈΡΠ°, ΠΏΠΎΡΠ²ΡΡΠ΅Π½Π° Π΄ΠΎΠΊΠ°Π·ΠΎΠΌ ΠΎΡΠ½ΠΎΠ²Π½ΠΈΡ
ΠΈΡΡΡΠ°ΠΆΠΈΠ²Π°ΡΠΊΠΈΡ
Ρ
ΠΈΠΏΠΎΡΠ΅Π·Π°, ΠΊΠΎΡΠ΅ ΡΠ΅ ΠΎΠ΄Π½ΠΎΡΠ΅ Π½Π° ΡΠΊΡΠΏΠ°Π½ ΠΈΠ·Π½ΠΎΡ ΡΠΈΠ·ΠΈΠΊΠ° ΠΏΡΠ΅ΠΌΠ° ΡΠ²Π°ΠΊΠΎΠΌ ΠΎΠ΄ ΠΏΡΠΎΡΠ΅ΠΊΡΠ½ΠΈΡ
ΡΠ΅Π·ΡΠ»ΡΠ°ΡΠ° Ρ Π²ΠΈΠ΄Ρ ΠΏΠ»Π°Π½Π°, Π±ΡΡΠ΅ΡΠ° ΠΈ ΡΠ΅Ρ
Π½ΠΈΡΠΊΠΈΡ
ΠΊΠ°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠ° ΠΏΡΠΎΡΠ΅ΠΊΡΠ°, ΠΏΡΡΠΆΠ°ΡΡ ΡΠ°ΡΠ°Π½ ΡΠ²ΠΈΠ΄ Ρ ΡΠΈΠ·ΠΈΠΊΠ΅ ΠΏΡΠΈΡΡΡΠ½Π΅ ΠΏΡΠΈΠ»ΠΈΠΊΠΎΠΌ ΠΏΡΠΎΡΠ΅ΡΠ° ΠΎΡΠ²Π°ΡΠ°ΡΠ° II ΠΈΠ½Π΄ΡΡΡΡΠΈΡΡΠΊΠΎΠ³ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄Π° Ρ ΠΌΠ°Π»ΠΎΠΌ ΠΈ ΡΡΠ΅Π΄ΡΠ΅ΠΌ ΠΏΡΠ΅Π΄ΡΠ·Π΅ΡΡ ΠΊΠ°ΠΎ ΠΈ ΡΠΈΡ
ΠΎΠ²ΠΎΠΌ ΡΡΠΈΡΠ°ΡΡ Π½Π° Π΄Π΅ΡΠΈΠ½ΠΈΡΠ°Π½Π΅ ΠΏΡΠΎΡΠ΅ΠΊΡΠ½Π΅ ΡΠΈΡΠ΅Π²Π΅..
Techno-economic analysis of heat exchangers with parallel helical tube coils
U radu su prikazani investicijski i eksploatacijski troΕ‘kovi kod bubnjastih izmjenjivaΔa topline s paralelnim zavojnim cijevima. Provedena je statistiΔka analiza najΔeΕ‘Δe rabljenih korelacija iz otvorenih literaturnih izvora za odreΔivanje cijena bubnjastih izmjenjivaΔa topline s trΕΎiΕ‘nim podacima aparata s kojom je utvrΔeno da pokazuju znaΔajna odstupanja i da se ne mogu s dovoljnom pouzdanoΕ‘Δu koristiti za navedeni tip aparata. Uspostavljena je nova korelacija za procjenu cijena aparata sa zavojnim cijevima (za sluΔaj kada je omotaΔ aparata izraΔen od ugljiΔnog Δelika, a cijevni snop od bakra). Procijenjeni su troΕ‘kovi elektriΔne energije za pogon pumpi kao i troΕ‘kovi kemijskog ΔiΕ‘Δenja aparata inhibiranom klorovodiΔnom i sumpornom kiselinom.The paper deals with the investment and exploitation costs for shell and tube heat exchangers with parallel helical tube coils. The most common correlations for estimating prices of shell and tube heat exchangers found in open literature were tested using the market data for a comparison and they have shown significant deviations. A new correlation for calculating prices of heat exchangers with helical tubes (when the shell is made of carbon steel and the helical tube of copper) was determined. In addition, the costs of electricity needed to drive pumps, as well as the costs of chemical cleaning of the apparatuses with inhibited mineral acids were estimated
Dumper operation risk analysis model and HAMRISK expert system
The paper presents a model of risk analysis of dumper operation with the aim of determining the most common reason for unplanned stoppages, as well as, after classifying stoppages by system, to evaluate them from the aspect of risk. The set criteria for risk analysis are: time spent in downtime, frequency of downtime and level of danger. The results of the research indicated the causes of high risk on the observed machines, on the basis of which priority preventive maintenance measures can be refined in order to reduce risk. Furthermore, in the research on risk prevention of the operation of transport and mining machines, the online contextual and adaptive expert system HAMRISK was developed and the advantages and disadvantages of the developed software solution were examined in practice