Energy Saving and Economical Analysis of Frequency Conversion Operation for Cooling Water Pumps in Underground Engineering Air Conditioning System

2009 ◽  
Author(s):  
Xiaoping Miao ◽  
Guanzhong Peng ◽  
Xibin Ma ◽  
Jintian Li ◽  
Wenjie Liu
Keyword(s):  
Energy Saving ◽  
Air Conditioning ◽  
Frequency Conversion ◽  
Cooling Water ◽  
Underground Engineering ◽  
Air Conditioning System ◽  
Economical Analysis ◽  
Conversion Operation ◽  
Water Pumps

Analysis on Energy Saving Factors and Research on Energy Efficiency Evaluation Indexes of Ventilation and Air Conditioning System in the Underground Engineering

2013 ◽  
Vol 291-294 ◽  
pp. 682-687
Author(s):  
Shi Bin Geng ◽  
Sha Sha Chen ◽  
Ming Xing Xiao
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Air Conditioning ◽  
Water System ◽  
Efficiency Evaluation ◽  
Underground Engineering ◽  
Air Conditioning System ◽  
Evaluation Indexes ◽  
Heat System ◽  
Energy Efficiency Evaluation

This paper makes comprehensive analysis on energy saving factors of ventilation and air conditioning system in the underground engineering mainly from five aspects ,such as the overall scheme, cold - heat system, air system, water system and operation management . And based on this, furthermore, each energy saving factor is quantified , the energy efficiency evaluation indexes of each subsystem is studied .So that it provides a concrete and feasible evaluation index and its basic calculation method for energy-saving evaluation, diagnosis of energy saving and energy saving reconstruction work.

Building Energy Audit and Energy-Saving Analysis for a Five-Star Hotel in Beijing

2014 ◽  
Vol 507 ◽  
pp. 521-524
Author(s):  
Chuan Qi Xu ◽  
Song Pan ◽  
Zhen Hui ◽  
Jin Shun Wu ◽  
Yun Mo Wang ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Air Conditioning ◽  
Cooling Water ◽  
Building Energy ◽  
Energy Audit ◽  
Energy Monitoring ◽  
Regulatory Frameworks ◽  
Water Pumps ◽  
Energy Equipment

Building energy audit and equipment energy-saving assessment are an important part of the building energy monitoring system in the construction. This paper takes a five-star hotel in Beijing as an example and audits the building energy consumption of the hotel. By testing air conditioning chillers, chilled water pumps, cooling water pumps and other equipments analyses energy-saving potentiality of the conditioning system and lighting equipments. The results would help us put forward some sound energy-saving measures, regulatory frameworks and reduce energy equipment consumption.

Study on the Energy Saving Control of Groundwater Source Heat Pump Air Conditioning System Based on Integrated Optimization Viewpoint

2011 ◽  
Vol 217-218 ◽  
pp. 202-205
Author(s):  
Zhi Wei Wang ◽  
Lei Shi ◽  
Peng Li ◽  
Wei Cao
Keyword(s):  
Energy Saving ◽  
Heat Pump ◽  
Air Conditioning ◽  
Field Investigation ◽  
Air Conditioning System ◽  
Energy Saving Potential ◽  
System Energy ◽  
Groundwater Source ◽  
Water Pumps ◽  
Energy Saving Control

For an actual project of groundwater source heat pump air conditioning system in Yangli region, by the field investigation on energy usage status of the system operation, analyzes the causes of non-energy-saving operation such as water pumps energy consumption too much, presents an intelligent control strategy of the system energy saving operation for solving the problem, performs the program design of energy saving control based on Programmable Logic Controller (PLC) and variable frequency technique, finally predicts the system energy saving potential.

Research Based on the Actual Project of Central Air Conditioning Intelligent Frequency Conversion System

2014 ◽  
Vol 672-674 ◽  
pp. 1688-1692
Author(s):  
Yan Ling Lv ◽  
Chong Teng ◽  
Wen Hai Chen
Keyword(s):  
Energy Saving ◽  
Air Conditioning ◽  
Frequency Conversion ◽  
Water Cycle ◽  
Frequency Converter ◽  
Actual System ◽  
Air Conditioning System ◽  
Control Cabinet ◽  
Central Air Conditioning ◽  
Control Part

At present, with the development of science and technology, central air conditioning systems had made great progress. Because of the earlier central air conditioning system have some shortcomings. Such as hunge energy consumption, water cycle equipment wear. Now engineer put forward a variety of solutions. One of the most mainstream solutions is technology of frequency conversion water cycle central air-conditioning system and the central air conditioning system of intelligent sending wind energy saving technology. This design is for central air conditioning system of a company's actual renovation project. It is equipped with technology of frequency conversion water cycle central air-conditioning system. Mainly consist of the control part, frequency converter part and the water cycle part. This paper firstly introduces the working principle of general frequency converter PID control central air conditioning system. And from the control cabinet part, motor start part, PLC control part, and the frequency converter set part introduces the design. And analyzed the operating results. Because of using negative feedback, the temperature of system become stable. Through PLC intelligent control, can also make the system more energy conservation and environmental protection. Through the analysis of the actual system running data, verified the system has a considerable energy saving ability.

Study of Frequency Conversion Energy-Saving Reconstruction for Central Air-Conditioning

2014 ◽  
Vol 496-500 ◽  
pp. 1143-1146
Author(s):  
Hong Yan Hua ◽  
Zhen Zhang
Keyword(s):  
Energy Saving ◽  
Air Conditioning ◽  
Frequency Conversion ◽  
Water System ◽  
Variable Frequency ◽  
Air Conditioning System ◽  
Large Power ◽  
Central Air Conditioning ◽  
Conditioning Equipment ◽  
Control Principle

Water system is one of the significant compositions with large power consumption in air-conditioning equipment. From viewpoint of energy-saving, the variable frequency operational principle of the water system is analyzed, the merits and demerits of operating water system under power frequency or variable frequency are compared, and the control principle of the energy-saving revamping project is introduced. In addition, combining with the specific project, the benefit of energy-saving for the water system is analyzed. The result shows that after revamping, the air-conditioning system runs properly, both the indoor temperature and humidity meet the specifications; the revamping technology offers significant energy-saving effects.

scholarly journals Assessing a Multi-Objective Genetic Algorithm with a Simulated Environment for Energy-Saving of Air Conditioning Systems with User Preferences

Symmetry ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 344
Author(s):  
Alejandro Humberto García Ruiz ◽  
Salvador Ibarra Martínez ◽  
José Antonio Castán Rocha ◽  
Jesús David Terán Villanueva ◽  
Julio Laria Menchaca ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Energy Consumption ◽  
Energy Saving ◽  
User Satisfaction ◽  
Air Conditioning ◽  
State Of The Art ◽  
User Preferences ◽  
The State ◽  
Nsga Ii ◽  
Air Conditioning System

Electricity is one of the most important resources for the growth and sustainability of the population. This paper assesses the energy consumption and user satisfaction of a simulated air conditioning system controlled with two different optimization algorithms. The algorithms are a genetic algorithm (GA), implemented from the state of the art, and a non-dominated sorting genetic algorithm II (NSGA II) proposed in this paper; these algorithms control an air conditioning system considering user preferences. It is worth noting that we made several modifications to the objective function’s definition to make it more robust. The energy-saving optimization is essential to reduce CO2 emissions and economic costs; on the other hand, it is desirable for the user to feel comfortable, yet it will entail a higher energy consumption. Thus, we integrate user preferences with energy-saving on a single weighted function and a Pareto bi-objective problem to increase user satisfaction and decrease electrical energy consumption. To assess the experimentation, we constructed a simulator by training a backpropagation neural network with real data from a laboratory’s air conditioning system. According to the results, we conclude that NSGA II provides better results than the state of the art (GA) regarding user preferences and energy-saving.

scholarly journals The Analysis for Energy Consumption of Marine Air Conditioning System Based on VAV and VWV

2018 ◽  
Vol 38 ◽  
pp. 04012
Author(s):  
Sai Feng Xu ◽  
Xing Lin Yang ◽  
Zou Ying Le
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Air Conditioning ◽  
Water Volume ◽  
Pump System ◽  
Air Conditioning System ◽  
Variable Air Volume ◽  
Air Volume ◽  
Marine Air ◽  
Variable Water

For ocean-going vessels sailing in different areas on the sea, the change of external environment factors will cause frequent changes in load, traditional ship air-conditioning system is usually designed with a fixed cooling capacity, this design method causes serious waste of resources. A new type of sea-based air conditioning system is proposed in this paper, which uses the sea-based source heat pump system, combined with variable air volume, variable water technology. The multifunctional cabins’ dynamic loads for a ship navigating in a typical Eurasian route were calculated based on Simulink. The model can predict changes in full voyage load. Based on the simulation model, the effects of variable air volume and variable water volume on the energy consumption of the air-conditioning system are analyzed. The results show that: When the VAV is coupled with the VWV, the energy saving rate is 23.2%. Therefore, the application of variable air volume and variable water technology to marine air conditioning systems can achieve economical and energy saving advantages.

scholarly journals Evaluasi Sistem Pemanfaatan Energi Listrik di Grand Clarion Hotel Makassar

2019 ◽  
Vol 17 (1) ◽  
pp. 88
Author(s):  
Herman Nawir ◽  
Kusmanurwira Kusmanurwira ◽  
Alif Firdaus
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Air Conditioning ◽  
Electricity Consumption ◽  
Initial Energy ◽  
Energy Audit ◽  
Air Conditioning System ◽  
Ac Power ◽  
Consumption Intensity

Abstract In the hotel business, the use of energy is very important, especially in the use of electricity, the portion of usage and allocation of funds for its provision is the largest. It can be seen that equipment such as lights, elevators, refrigerators, laundry, heaters, pumps, to the air conditioning system are some of the dominant tools in operations in the hospitality world. The results of the initial energy audit and detailed audit at the Grand Clarion Hotel Makassar showed that the Energy Consumption Intensity (IKE) is still far from the standard, which is 300 kWh / m2 a year. The building uses the largest amount of electricity in the Grand Clarion Hotel Makassar in Building A, which is in the Guest Room area of the air conditioning unit. The results of the initial energy audit of Energy Consumption Intensity (IKE) electricity were 336.84 kWh / m2 year. Whereas based on the results of a detailed energy audit the electricity consumption intensity (IKE) of electricity is 395.51 kWh / m2 a year. Energy Saving Opportunities (PHE) in this energy audit is to evaluate the AC power in each room and recommend the replacement of lamp types. From the results of the IKE calculation after the application of PHE, it is found that the value is still quite high so that efforts to save must still be done. 

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