scholarly journals Influence of ambient temperature on the efficiency of underground spot cooling system

2022 ◽  
Vol 354 ◽  
pp. 00026
Author(s):  
Ion Dosa ◽  
Sorina Anuțoiu ◽  
Dan Codrut Petrilean ◽  
Gheorghe Urdea
Keyword(s):  
Cooling System ◽  
Ventilation System ◽  
Low Carbon ◽  
Low Carbon Economy ◽  
Ambient Temperatures ◽  
Free Cooling ◽  
Spot Cooling ◽  
Air Conditioning Systems ◽  
Vapour Compression ◽  
Carbon Economy

In mine air conditioning systems, the vapour compression refrigeration cycle seems to be currently the most widespread method of artificial cooling. In literature some other methods for cooling a mine are also presented, like using free-cooling in refrigeration systems. Mine workings in Jiu Valley are using the primary and secondary ventilation system for cooling the underground. Today the activities are focused mainly on mine closure as a part of transition to the low carbon economy, and this situation brings new challenges regarding the mine ventilation system, which was designed to meet the needs of a full-scale operation. As a result, locally ambient temperatures can rise, and spot cooling systems can be used, in order to cool the air. Such a system has been considered and calculations have been made to evaluate its thermal efficiency at different ambient temperatures.

A Financial Analysis of Several Air Conditioning Systems with Different Habitable Area in Typical Cities

2012 ◽  
Vol 433-440 ◽  
pp. 1820-1827
Author(s):  
Chen Hao Yan ◽  
Hai Tao Zhang ◽  
Hua Zhang ◽  
Yan Ting Wang
Keyword(s):  
Air Conditioning ◽  
Financial Analysis ◽  
Air Conditioner ◽  
Low Carbon ◽  
Air Conditioning System ◽  
Low Carbon Economy ◽  
Long Time ◽  
Air Conditioning Systems ◽  
Selection Of ◽  
Carbon Economy

Air conditioning is widely used nowadays. It brings comfortable life to us while gives some problems. Regional shortage of power supply has a great deal to do with the extensive use of air conditioner for long time. Against the background of low carbon economy, this paper choose 3 room types of 4 typical cities which have different habitable area and carry out a financial analysis of 4 types of air conditioning system(northern city has 5 types). So we’ll have a comprehensive and intuitive understand of economy of typical air conditioning system. It could help the selection of air conditioning system of different area and make good use of energy.

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