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System for Recording and Reporting Fault States of Cooling Devices
Jašek, Filip ; Vašíček, Zdeněk (referee) ; Šimek, Václav (advisor)
The thesis deals with the design and creation of a system for recording and reporting error states of cooling devices on the principle of a compressor heat pump. An important element of the concept of the entire monitoring system is a built-in platform based on the ESP32 microcontroller for evaluating data measured by sensors. Another key element is the communication module, which sends measured data via GPRS in the form of MQTT messages to the service web application. The application receives, evaluates and records measured data. Subsequently are measured data and evaluated error states presented to the user in the form of tables and interactive graphs.
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Control system for circle of coolig water
Kouřil, Jan ; Chomát, Luděk (referee) ; Pivoňka, Petr (advisor)
Main focus of bachelor thesis is to present practical construction of cooling circuit in customer quenching room, in all it's wide. From simple introduction to technological background (cooled technologies) and construction of circuit itself (cooling technologies), up to electronics control units, control algorithm and finaly IBM/PC based visualization under Control Web enviroment.
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The influence of heat sources to microclimate in indoors space
Janková, Martina ; Ell, Jiří (referee) ; Rubina, Aleš (advisor)
This master thesis with the influence of heat sources to microclimate in indoor space. The aim of the thesis was to make the calculations of the dynamic behavior in indoor space and suggest ventilation systems for exhaust heat load. for found values. In the practical part of the thesis, individual systems are describing and then they are valorizing in accordance with energy intensity and thermal comfort.
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Compressors for refrigeration equipment
Perejda, Michal ; Sekanina, Bohumil (referee) ; Štětina, Josef (advisor)
The work is devoted to the problematic of compressors for refrigeration equipment with a focus on industrial refrigeration and medium performance output requirements. Reader receives a basic overview of the construction, operating cycle, pressure and temperature process and the compressor performance control options of the three in engineering practice most common types of compressors: reciprocating, screw and scroll. It describes the basic elements and actions of the cooling circuit within the information range most important for understanding the compressor operating cycle. This work includes thermodynamic analysis of the reciprocating compressor working cycle and shows practical application of compression device in real operation. The goal of this work is to provide the reader with a description of the thermodynamic process in the compressor, a comprehensive and systematic overview of the types of compressors used in practice and compare their characteristics, advantages and disadvantages.
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Cooling systems in transport vehicles
Andrlík, Ladislav ; Fojtlín, Miloš (referee) ; Tuhovčák, Ján (advisor)
The purpose of this work is to examine currently used types of automobile cooling systems. This examination is presented in the form of a search report. The history of air conditioning is briefly described in the introduction of this work. The work then deals with the classification and description of cooling systems and their partial components which are complemented by pictures for better visualization. The primary focus is on the types and constructions of the compressors since the compressor is the fundamental element of all air conditioning circuit. The work concludes with information about coolants and adequate oil in use in relation to their ecological impact.
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Energy evaluation of systems VRF
Gašpár, Juraj ; Hanyk, Kamil (referee) ; Rubina, Aleš (advisor)
This master thesis deals with VRF systems, which are used for extensive commercial and office buildings, or for buildings where there are multiple zones with different required parameters. The aim of the thesis is to explain the functions of the system and their evaluation and inclusion into energy classes according to the new legislation. The practical part deals with an application of the VRF system and its variants in the building of bank branch. The comparison of initials costs and resultant costs to operate the system. The experiment focuses on comparison of the measured values of VRF system and their comparison with data from the manufacturer.
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Design of new cooling circuit
Albert, Tomáš ; Milčák, Pavel (referee) ; Baláš, Marek (advisor)
This diploma thesis introduces the reader to the design of the new cooling circuit and its modernization. Part of this is the calculation of the heat exchanger and the design of other parts, such as pumps or cooling towers. It also deals with the possibility of using waste heat for specific conditions.
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Survey of the use of propane as refrigerant R290 in cooling circuits and heat pumps
Aminian, Ali ; Prokopová, Olga ; Vinš, Václav
The technical report presents a review on the application of propane as refrigerant R290 in cooling circuits and heat pumps (HVAC). Safety risks of R290 used in HVAC are addressed according to ANSI/ASHRAE and EN standards. Comparison of thermophysical properties of propane with other refrigerants, solubility and miscibility of propane in compressor oils and heat transfer in condenser and evaporator are discussed. The main aim of the study is to provide an overview about the potential use of propane in the cooling circuit and heat pump for the hydrogen bus developed by the SOR Libchavy company.
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System for Recording and Reporting Fault States of Cooling Devices
Jašek, Filip ; Vašíček, Zdeněk (referee) ; Šimek, Václav (advisor)
The thesis deals with the design and creation of a system for recording and reporting error states of cooling devices on the principle of a compressor heat pump. An important element of the concept of the entire monitoring system is a built-in platform based on the ESP32 microcontroller for evaluating data measured by sensors. Another key element is the communication module, which sends measured data via GPRS in the form of MQTT messages to the service web application. The application receives, evaluates and records measured data. Subsequently are measured data and evaluated error states presented to the user in the form of tables and interactive graphs.
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Design of new cooling circuit
Albert, Tomáš ; Milčák, Pavel (referee) ; Baláš, Marek (advisor)
This diploma thesis introduces the reader to the design of the new cooling circuit and its modernization. Part of this is the calculation of the heat exchanger and the design of other parts, such as pumps or cooling towers. It also deals with the possibility of using waste heat for specific conditions.
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