-
Design and Application of Fuzzy Controller for Electronic Expansion Valve in Refrigeration System This document is about the design and application of the fuzzy controller for the electronic expansion valve in the refrigeration system. This paper introduces the design principle and method of the fuzzy controller for the opening of the electronic expansion valve in the refrigeration and air conditioning system. The content is detailed and worth downloading. -
Research on Dynamic Characteristics of Sub expansion Valve in Car Air Conditioning and Refrigeration System This data is a study of the dynamic characteristics of the sub expansion valve in the car air-conditioning refrigeration system. It studies the dynamic characteristics of the electronic expansion valve used in the car air-conditioning refrigeration system, that is, the dynamic response of the evaporator inlet and outlet temperatures and superheat caused by the change of the opening of the electronic expansion valve. The content is detailed and worth downloading. -
Energy saving and optimized operation of refrigeration system Through the preliminary analysis of many factors affecting the power consumption of the refrigeration system, this paper uses orthogonal test, regression calculation and other means to obtain the functional relationship between the power consumption of the system and the main factors, so as to quickly find out the best operating parameters through optimization calculation, guide the operation, and achieve the goal of energy saving. -
How to realize the automation of ammonia refrigeration system An introduction to the example of ammonia refrigeration automation...... As shown in Figure 1, the five refrigeration compressors are all products of Yantai Refrigerator Factory (existing ice wheel). The refrigeration system is simple and compact, and the high-pressure liquid storage tank and discharge tank are canceled. The liquid ammonia condensed from condenser 1 is carried out through the floating ball throttle valve 4...... 1. The refrigeration compressor is automatically started and stopped 2. The evaporative condenser cycles -
Heat recovery and energy saving of ammonia refrigeration system This paper introduces the method and process of heat recovery in ammonia refrigeration system, which can save energy and electricity and improve refrigeration efficiency. -
Separation and recovery of refrigeration oil in refrigeration system The function of refrigeration oil, the way to enter the refrigeration system, the process, the location of accumulation and the harm caused were analyzed. -
Design and analysis of thermosyphon refrigeration system This paper systematically analyzes the thermosyphon oil cooling system widely used at home and abroad at present, and analyzes the design principles of equipment and system pipelines in the thermosyphon oil cooling system in detail. -
Energy saving in ammonia refrigeration system From the determination of design parameters, the selection of control mode, the selection and layout of compressors, auxiliary equipment and pipelines, the energy saving in ammonia refrigeration system is introduced; Energy saving in the operation of ammonia refrigeration system is introduced from the aspects of preventing too low evaporation temperature, preventing condensation pressure, too high exhaust temperature, operation and maintenance of compressor, defrosting of evaporator, etc -
Operation scheme of refrigeration system of a project The differential pressure control method is used for variable water volume air conditioning system, including system purging and drainage, air tightness test, vacuum test, refrigerant filling after system insulation, compressor start-up preparation, operation cooling, etc. -
Air tightness test record of a refrigeration system This document is the air tightness test record of a refrigeration system. It has complete contents and can be downloaded -
Performance experiment of R290_CO_2 cascade refrigeration system Through the performance experiment of R290/CO2 cascade refrigeration system, the performance of CO2 as refrigerant in low temperature cycle and R22 and R290 as refrigerant in high temperature cycle is compared -
Application of Electronic Expansion Valve in Low Temperature System The application characteristics of electronic expansion valve (EEV) in cryogenic system are studied. According to the analysis of the experimental results, it can be seen that the temperature control curve of the electronic expansion valve is also very stable under low temperature conditions, and the different opening degrees of the electronic expansion valve can be adjusted to make the low-temperature box achieve different cooling rates -
Operating Procedures for Refrigeration System The working medium circulating in the refrigerant refrigeration system is called refrigerant. When the refrigerant passes through the evaporator, it absorbs heat from the object to be cooled, and then carries the heat out of the condenser through the cooling water to the atmosphere (environment). Ammonia (R717) is used as refrigerant. When there is water, ammonia will corrode copper and alloy (except cast tin bronze). When mixed with air -
Experimental study on deep freeze absorption refrigeration system For the ACAR cycle, an experimental platform was designed and established. With R32+R134a/DMF as the working medium, a series of experiments were carried out on R32 and R134a with different ratios, and the refrigeration temperature and related parameter data of the cycle were measured. The experimental results show that the ACAR cycle can obtain a lower evaporation temperature when the temperature is not high -
Theoretical calculation of single-stage compression refrigeration system This article is about the design and calculation of single-stage compression part, which is extracted from five authoritative books on refrigeration design. The calculation method is very comprehensive. It is especially suitable for refrigeration designers and those who are new to the refrigeration industry. Compared with an ordinary theoretical exposition, this article is more practical and I believe you will like it. -
Design and commissioning of a parallel fluorine refrigeration system Design and commissioning of a parallel fluorine refrigeration system -
Discussion on Microcomputer Automatic Control and Energy Saving of Refrigeration System in Cold Storage This paper introduces the microcomputer automatic control system of the adjustable temperature warehouse in the distribution center of Shenzhen Food Corporation. The system has display function program module, system operation program module, alarm processing program module, printing program module, report generation and management program module, graphic configuration program module and help program module, which can realize ammonia compressor, cold room, circulating water -
Application analysis of throttling mechanism in refrigeration system This paper introduces the working principles of various traditional throttling mechanisms, and analyzes the energy matching of each operation. The problems needing attention in the application of throttle mechanism are pointed out. Finally, the control principle of electronic expansion valve and its advantages in energy saving are emphasized. -
Research on Fuzzy PID Control of Refrigeration System in Cold Storage Research on Fuzzy PID Control of Refrigeration System in Cold Storage (Master's Thesis), Nier can provide a comprehensive and detailed reference for you. -
Refrigeration system diagram of wooden building on 26th floor This drawing is the refrigeration system diagram of the 26th floor of the wooden building, including the plan of the first floor and the second floor, 111111111111111 -
Emergency plan for ammonia leakage of ammonia refrigeration system The safety of refrigeration system is particularly important. Because of its toxicity, preventive measures should be developed to ensure life safety. This is our company's (emergency plan for ammonia leakage), -
Application of solenoid valve in refrigeration system This solenoid valve design basis is applicable to multi split and single unit air conditioning systems, including the classification, model selection, use design standards, use and installation processes and inspection standards of solenoid valves. The benchmark summarizes the problems occurred in the use of solenoid valves in the past as design minefields, which can be used for reference in the design and use of solenoid valves and ensure the reliability of the air conditioning system -
Optimization analysis of solar refrigeration system This data is: optimization analysis of solar cooling system, a total of 4 pages, detailed content, for reference. -
Energy saving design of refrigeration system for air-conditioned storage of fruits and vegetables Content introduction According to the characteristics of low energy utilization rate and high energy consumption of the existing air-conditioned storage, the refrigeration system is designed to save energy by adding a precooling room and reducing the cooling time of the air-conditioned storage room, using a storage plate with low thermal conductivity and handling moisture and air tightness, selecting a compressor condensing unit with low power consumption and equipped with a frequency converter, and an air cooler with small temperature difference and variable wind speed, It can reduce the operating energy of the refrigeration system -
Refrigeration system equipment installation scheme (air conditioning system) Content introduction This document is an installation plan for the refrigeration system equipment of a project, mainly involving the installation of cooling towers, pumps, tanks, air conditioners, plate heat exchangers, valve flanges, and air ducts. -
N0404_Recooling System Tightness Test Record N0404_ Record of air tightness test of refrigeration system, which is detailed and can be downloaded by netizens. -
Record materials for air tightness test of refrigeration system This document is the recording material for the air tightness test of the refrigeration system. It is detailed and worth reference -
Air tightness test record of a project's refrigeration system This document is the record of the air tightness test of the refrigeration system of a project. The contents are complete and can be downloaded -
Air tightness test record of refrigeration system of a project This document is the record of the air tightness test of the refrigeration system of a project. The contents are complete and can be downloaded -
Record of air tightness test of refrigeration system It complies with the requirements of the manufacturer's technical documents and the provisions of Code for Acceptance of Construction Quality of Ventilation and Air Conditioning Engineering (GB50243-2202), and the test results are acceptable. -
Automatic oil discharge and return of ammonia refrigeration system This control program focuses on solving the automatic oil discharge and automatic oil return of the ammonia refrigeration system, ensuring the nearly oil-free operation state in the evaporator, freeing manpower, and greatly improving the refrigeration efficiency. -
Discussion on Energy Saving, Environmental Protection and Safety of Refrigeration System With the development of economy and the improvement of people's quality of life, the problems of environmental pollution, energy shortage and food safety have attracted more and more attention from people all over the world. The development trend of refrigeration and air conditioning industry is energy conservation, environmental protection and safety. This paper mainly discusses the problems of energy saving, environmental protection and safety in the operation and management of vapor compression refrigeration system. -
Calculation and Analysis of Freon Refrigeration System Piping This paper analyzes and calculates the selection of the inner diameter of the liquid supply pipeline and the air return pipeline of the Freon refrigeration system in a cold storage, and explains the details that should be paid attention to when selecting the pipe diameter of the Freon refrigeration system, which is changed from the former form of a single head unit corresponding to a cold storage room to the form of a parallel compressor unit corresponding to multiple cold storage rooms. -
Calculation of Freon refrigeration system equipment selection This article is suitable for beginners. It is simple and easy to understand, or has omissions. It is the summary of the author in 2004. -
Thermodynamic Analysis and Calculation of Two stage Compression Refrigeration System The two-stage compression refrigeration system composed of several screw compressors is used to conduct thermodynamic calculation and analysis under different operating conditions of the theoretical gas transmission ratio of the high-pressure stage and low-pressure stage compressors, and to comprehensively compare and analyze the refrigeration capacity, shaft power, and refrigeration capacity per unit shaft power. -
Performance Analysis of Airborne Small Power Thermoelectric Refrigeration System Including the performance analysis of airborne small power thermoelectric refrigeration system Analysis and improvement of the household refrigerator refrigeration system's "dirty and blocked" reason -
Heat exchange network optimization of absorption refrigeration system Aiming at the problem of high utility consumption and low efficiency of the absorption refrigeration system at present, the joint optimization of heat exchange network investment and utility is carried out, that is, first establish a reasonable heat exchange network through pinch analysis, then calculate and select the decision variables such as the minimum heat transfer temperature difference, and then obtain the joint optimization results by establishing and solving the corresponding nonlinear objective function and writing a calculation program. This method is useful for -
Diagnosis and removal of refrigerator refrigeration system faults The failure of the compressor, condenser, evaporator, drying filter, capillary tube, etc. in the refrigerator refrigeration system will directly reflect on the refrigeration effect of the refrigerator. During maintenance, the failure of the refrigeration system can be correctly judged according to the refrigeration effect of the refrigerator and the working system of the compressor (the percentage of the compressor operating time in the total working time is generally not more than 50%). -
Optimal matching calculation of room air conditioner refrigeration system In this paper, the variable tolerance optimization method is used, the COP value of the refrigeration system performance coefficient is taken as the objective function, and the main structural parameters of the evaporator, condenser, capillary tube and the refrigerant filling volume are taken as the optimization variables. The optimal matching calculation of several major components of the room air conditioner system is carried out, so that the energy efficiency ratio is significantly improved, and the purpose of energy saving is achieved.
-
one Cooling system -
two Expansion valve in refrigeration system -
three Ccot refrigeration system -
four How to exclude the refrigeration system -
five Expansion valve of throttling refrigeration system -
six Function of expansion valve of refrigeration system -
seven Constant enthalpy of expansion valve of refrigeration system -
eight The expansion valve of the refrigeration system is frosted