Multiple Criteria Decision Method Used in Selection of Green Air-Conditioning System

2013 ◽  
Vol 732-733 ◽  
pp. 605-608
Author(s):  
Can Zhou ◽  
Yu Yun Li
Keyword(s):  
Heat Pump ◽  
Air Conditioning ◽  
Indoor Environment ◽  
Operating Costs ◽  
Structure Model ◽  
Air Conditioning System ◽  
Ground Source ◽  
Air Conditioning Systems ◽  
Operation And Management ◽  
Selection Of

Established a hierarchy structure model and made a quantitative assessment of seven air-conditioning systems which are gas boiler plus electric refrigerating system、air-cooled heat pump、variable refrigerant volume air conditioning、ground-source heat pump air conditioning、centralized heat-supply plus electric refrigerating、gas direct-fired machine、energy storage on relevant professionality and indoor environment,initial investment,operating costs,operation and management,environmental impact,energy consumption.Finally we obtained an optimal scheme,which agreed with that in practice.

Economic Evaluation of Ground-Source Heat Pump Air-Conditioning Systems

2012 ◽  
Vol 512-515 ◽  
pp. 1125-1128
Author(s):  
Liang Chen ◽  
Chao Zhang ◽  
Yong Li
Keyword(s):  
Economic Evaluation ◽  
Heat Pump ◽  
Air Conditioning ◽  
Evaluation Methods ◽  
Ground Source Heat Pump ◽  
Air Conditioning System ◽  
Investment Projects ◽  
Ground Source ◽  
Air Conditioning Systems

Analyze economically and make evaluation of several investment projects of ground-source heat pump combining relevant economic evaluation methods. Compare this system with other conventional air conditioning systems in economic input to provide suggestions for applying and promoting the ground-source heat pump air-conditioning system.

Study on the Ground-Source Heat Pump with Properties of Thermal Dynamics Used in Heating and Air Conditioning by Economic Analysis

2012 ◽  
Vol 252 ◽  
pp. 433-437
Author(s):  
Zhi Yang Yuan
Keyword(s):  
Economic Analysis ◽  
Heat Pump ◽  
Air Conditioning ◽  
Surface Soil ◽  
Ground Source Heat Pump ◽  
Thermal Dynamics ◽  
Air Conditioning System ◽  
Economic Competitiveness ◽  
Heating And Cooling ◽  
Ground Source

The ground-source heat pump is a system which takes the shallow surface soil energy as the source of heating and cooling. The temperature of ground source is relatively stable throughout the year, which makes the ground-source heat pump have the higher operation efficiency compared with the traditional air-conditioning system.Study on the ground-source heat pump with properties of thermal dynamics used in heating and air comditioning by ecomomic analysis is still an important issue. In this paper, the ground-source heat pump and the traditional heating and air-conditioning system have been compared in terms of their economic competitiveness. Firstly, it is required to compare the ground-source heat pump with the traditional heating method in terms of the heating economy. Afterwards, it is necessary to compare the ground-source heat pump with the conventional electric refrigeration in terms of the air-conditioning economy. Finally, it is needed to conduct the comprehensive and economic analysis for the ground-source heat pump and the boilers and air conditioning, which includes four programs.

scholarly journals Choice of sanitary-indicative microorganisms for the assessment of the safety of split-systems

2019 ◽  
Vol 95 (3) ◽  
pp. 296-301
Author(s):  
U. A. Rakhmanin ◽  
S. E. Shibanov ◽  
Sergey V. Kozulya
Keyword(s):  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Air Conditioning ◽  
Air Conditioning System ◽  
Split Systems ◽  
Air Conditioning Systems ◽  
Cleaning And Disinfection ◽  
Epidemiological Link ◽  
And Staphylococcus Aureus ◽  
Selection Of

Purpose of work is a compilation of data about the microflora which colonizes a split-system, with the aim of selection of sanitary-indicative microorganisms, whose presence in the sample would indicate to the need for cleaning and disinfection of split-systems. Materials and methods. In the article there were used data of five years author’s scientific inquiry, related to the prevention of respiratory diseases, associated with the usage of a local air conditioning systems. We also use the data from the literature. Results. For selection of “indicative” microorganisms, we proposed the usage of nine criteria, each of them have numeric value from 0 to 3 points (risk for health, prevalence rate of the disease, epidemiological link, speed of split system’s colonization, difficulty of cultivation, resistance in the environment, resistance to disinfectants, frequency of detection in home air conditioning systems, frequency of detection in air conditioning systems of public buildings). After the calculation Pseudomonas aeruginosa and Staphylococcus aureus received maximal score (20 points). Therefore, these two types of bacteria are indicative microorganisms. The detection of these microorganisms in split systems will indicate to the contamination of air-conditioning system. This microflora also is a criterion of cleaning and disinfection quality - presence of these microorganisms in the samples after this process will mean that the processing of air conditioning systems was performed poorly. Conclusions. Split systems are very faster colonized by conditionally pathogenic and pathogenic microflora. To prevent the possible hazard for population’s health it is necessary to develop the normative base, according to which sanitary-and-hygienic control over the split-systems working must be carried out. Proposed criteria suggest that Pseudomonas aeruginosa and Staphylococcus aureus are indicative microorganisms, and it’s identification in the air-conditioning system would mean risk for health and necessity for cleaning and disinfection.

Main Existing Problems and Respective Countermeasures of Ground-Source Heat Pump Technique Applications

2013 ◽  
Vol 433-435 ◽  
pp. 2327-2330
Author(s):  
Zhen Li ◽  
Wei Wei Wang
Keyword(s):  
Heat Pump ◽  
Air Conditioning ◽  
Ground Source Heat Pump ◽  
Existing Problems ◽  
Ground Source ◽  
Air Conditioning Systems

Based on the investigation results of 40 operation projects of ground-source heat pump air-conditioning systems in Shandong, analyses the problems of ground source heat pump existed in project application and puts forward respective technical and management countermeasures, providing reference for other similar applications.

scholarly journals Modeling and Simulation of Heat Pump Air-Conditioning System using Ecofriendly Refrigerants

2021 ◽  
Vol 9 (VI) ◽  
pp. 1166-1170
Author(s):  
Ajay Landage
Keyword(s):  
Energy Efficiency ◽  
Comparative Analysis ◽  
Physical Properties ◽  
Heat Pump ◽  
Air Conditioning ◽  
Coefficient Of Performance ◽  
Simulation Approach ◽  
Alternative Refrigerants ◽  
Air Conditioning System ◽  
Selection Of

A simulation approach to heat pump systems is proposed in this paper. The evaluation of working fluids is conducted. Moreover, the selected refrigerants are used in the simulation. Subsequently, the system is analyzed in terms of the coefficient of performance (COP) and energy efficiency. Some alternative refrigerants, instead of R22 used R290 refrigerent. It is described the selection of refrigerants adapted to each utilization, based on the thermodynamic and -physical properties, the technological behaviour, costs and use constraints as principal aspects of the environmental protection. Also, it is performed a comparative analysis in function of the total equivalent warming impact (TEWI) for some possible substitutes of refrigerant R22 used in various refrigeration and heat pump systems.

scholarly journals Modeling of an Air Conditioning System with Geothermal Heat Pump for a Residential Building

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Silvia Cocchi ◽  
Sonia Castellucci ◽  
Andrea Tucci
Keyword(s):  
Heat Pump ◽  
Air Conditioning ◽  
Residential Building ◽  
Heat Pumps ◽  
Geothermal Heat ◽  
Air Conditioning System ◽  
Heating And Cooling ◽  
Ground Source ◽  
Geothermal Heat Pump ◽  
Geothermal Plant

The need to address climate change caused by greenhouse gas emissions attaches great importance to research aimed at using renewable energy. Geothermal energy is an interesting alternative concerning the production of energy for air conditioning of buildings (heating and cooling), through the use of geothermal heat pumps. In this work a model has been developed in order to simulate an air conditioning system with geothermal heat pump. A ground source heat pump (GSHP) uses the shallow ground as a source of heat, thus taking advantage of its seasonally moderate temperatures. GSHP must be coupled with geothermal exchangers. The model leads to design optimization of geothermal heat exchangers and to verify the operation of the geothermal plant.

Energy Efficiency Analyses of Air-Conditioning Systems in Commercial Buildings in Egypt

2003 ◽  
Author(s):  
Ramiz Kameel ◽  
Essam E. Khalil
Keyword(s):  
Air Conditioning ◽  
Climatic Conditions ◽  
Operating Costs ◽  
Superior Performance ◽  
Energy Prices ◽  
Air Conditioning System ◽  
Maintenance Costs ◽  
Primary Water ◽  
Environmentally Sensitive ◽  
Air Conditioning Systems

Many buildings around the world utilize HVAC systems to provide the thermal comfort conditions for the occupants and users of these buildings as well as providing adequate conditions for special environmentally sensitive equipment. The appropriate air conditioning system design would necessarily provide the comfort and hygiene conditions with as low as possible initial capital and operating costs. The present study provides comprehensive analyses and comparisons between the water-cooled vs. air-cooled chillers with packaged water-cooled DX unit systems under the local Egyptian climatic conditions, primary water and energy prices and legistilations. The present study presents a comparison among the various systems according to the equipment and installation, operating, and maintenance costs. Based on the above analyses and the data collected with the prevailing prices, energy, water and maintenance costs at January 2003 in Egypt. It is apparent that water-cooled packaged units are of superior performance in terms of energy consumption and initial costs.

Design of a Composite Cold and Heat Source System of Air Conditioning Based on Ground Source Heat Pump (GSHP)

2011 ◽  
Vol 374-377 ◽  
pp. 649-654
Author(s):  
Ying Yu
Keyword(s):  
Heat Pump ◽  
Air Conditioning ◽  
Design Method ◽  
Heat Sources ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Air Conditioning System ◽  
Actual Measurement ◽  
Heat Pump System ◽  
Ground Source

For the air conditioning system of a modern building, the paper proposes a design method of composite cold and heat sources system based on the ground source heat pump. The author describes the design principle of this system, the design of ground heat exchanger system and the control of soil heat pump system etc. Through the actual measurement, this design greatly reduces power consumption and can be used as references for future applications.

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