scholarly journals A New Through-Wall Air Conditioning System with Improved Performance for High-Rise Office Buildings

2019 ◽  
Vol 294 ◽  
pp. 012068
Author(s):  
Shiro Tsukami ◽  
Hirotaka Kubo ◽  
Masayuki Icinose ◽  
Takaya Kato
Keyword(s):  
Air Conditioning ◽  
Office Buildings ◽  
Air Conditioning System ◽  
High Rise ◽  
Improved Performance

scholarly journals Performance optimization of polymeric porous membrane-based liquid desiccant air dehumidifier used in air conditioning system

2019 ◽  
Vol 11 (1) ◽  
pp. 55-71
Author(s):  
Ali Mohammad Jafarpour ◽  
Farivar Fazelpour ◽  
Seyyed Abbas Mousavi
Keyword(s):  
Performance Optimization ◽  
Air Conditioning ◽  
Weather Conditions ◽  
Porous Membrane ◽  
Operating Conditions ◽  
Regeneration System ◽  
Liquid Desiccant ◽  
Air Conditioning System ◽  
Air Stream ◽  
Improved Performance

AbstractIn this study an experimental design was developed to optimize the performance and structure of a membrane-based parallel-plate liquid desiccant dehumidifier used in air conditioning regeneration system which operates under high humidity weather conditions. We conducted a series of polymeric porous membranes with different compositions fabricated that were prepared with various weight percentages of polysulfone (PSU), mixed with N-methyl-2-pyrrolidone (NMP) and dimethyl form amide (DMF) solvents. Furthermore, the designed experiments were performed under various operating conditions, indicating that the dehumidification efficiency declines with increasing flow rate, temperature, and humidity. Consequently, a membrane with optimized porosity and moisture permeability was selected which resulted in eliminating the carryover of solution droplets in the air, largely due to separating the flow condition of liquid desiccant (Li Cl) and air. This specific design is also greatly benefited by removing the water vapor from the air stream. The results of mathematical model simulations indicate that the DMF solvent had higher dehumidification capability compared with that of NMP under the optimized operating conditions. Additionally, it can clarify the porosity of the membrane which plays a significant role in the overall performance. Therefore, the fabricated membrane produces fresh cool air, and it can be applied as a guiding sample for designing the membrane-based dehumidifier with improved performance.

Design of Air-Conditioning System and Elevator System Based on Intelligent Control

2014 ◽  
Vol 687-691 ◽  
pp. 26-28
Author(s):  
Hong Kun Pan
Keyword(s):  
Energy Consumption ◽  
Intelligent Control ◽  
Air Conditioning ◽  
Building Energy ◽  
Control Technology ◽  
Transport Capacity ◽  
Air Conditioning System ◽  
High Rise ◽  
Elevator Group Control ◽  
Conditioning Control

Air-conditioning system is the importance facilities to provide people with the comfort service, and air conditioning energy consumption accounts for about 40% of the total building energy consumption. However, the elevator system is an important transport vertical transport of high-rise buildings. Therefore, this article combines intelligent control technology with traditional air-conditioning control technology and elevator group control technology to solve the existing problem of air-conditioning control system, and greatly improve the transport capacity of the elevator system. Under the precondition of ensuring environmental comfort and improving systems, reduce the energy consumption of the system obviously.

Design and adaptability of photovoltaic air conditioning system based on office buildings

Solar Energy ◽  
2020 ◽  
Vol 202 ◽  
pp. 17-24 ◽  
Author(s):  
Yingya Chen ◽  
Yanfeng Liu ◽  
Jingrui Liu ◽  
Xi Luo ◽  
Dengjia Wang ◽  
...  
Keyword(s):  
Air Conditioning ◽  
Office Buildings ◽  
Air Conditioning System

scholarly journals PERENCANAAN SISTEM PENDINGIN UDARA MENGGUNAKAN CEILING DUCT DENGAN PENGATURAN SISTEM VRV/F PADA GEDUNG PERKANTORAN 3 LANTAI

2021 ◽  
Vol 2 (1) ◽  
pp. 34-42
Author(s):  
Srihanto ◽  
Moch Sugiri
Keyword(s):  
Air Conditioning ◽  
Flow System ◽  
High Reliability ◽  
Cooling Load ◽  
Total Load ◽  
Air Conditioning System ◽  
High Rise ◽  
Space Saving ◽  
Observation Method ◽  
Air Conditioning Systems

In tropical countries, there is a need for air conditioning systems, especially for high-rise buildings to provide comfort for their residents. For this reason, it is necessary to plan an air conditioning system using a ceiling duct with a VRV / F (Variable Refrigerant Volume / FLOW) system setting so that the load and capacity are appropriate and more efficient. In calculating the cooling load, starting from the sensible load and the load, and calculating the size of the ducting. The research method used to plan an air conditioning system using a ceiling duct with VRV / F system settings is the observation method by taking the required data. Perform calculations and analysis with the data obtained. So that after planning the total load on the 5th floor = 270,752.79 Btu / hr (79.3498kW), the 6th floor = 280,568.37 Btu / hr (82,227 kW), and the 7th floor = 229,690.66 Btu / hr (67.3157kW). The size of the ducting supply used is: Height = 75mm-450mm, Width = 75mm - 450mm and the size of the ducting return used is Height = 75mm-450mm, Width = 75mm-450mm. From the planning results, it is determined that the air conditioning system uses a ceiling duct system with VRV / VRF system settings. The advantages are Easy Maintenance, high reliability, large capacity use, space-saving design, different indoor units in one system, and using R410 type refrigerant.

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