scholarly journals A study on stratified air conditioning cooling load calculation model for a large space building

2018 ◽  
Vol 36 (2) ◽  
pp. 457-462 ◽  
Author(s):  
Ning Cai ◽  
Dongliang Zhang ◽  
Chen Huang
Keyword(s):  
Air Conditioning ◽  
Calculation Model ◽  
Cooling Load ◽  
Large Space ◽  
Load Calculation

A Study of Cooling Load Calculation of Stratified Air Conditioning System for Large Space Based on the Simultaneously Solving Model

2014 ◽  
Vol 672-674 ◽  
pp. 1755-1761 ◽  
Author(s):  
Ning Cai ◽  
Chen Huang
Keyword(s):  
Indoor Air ◽  
Air Conditioning ◽  
Thermal Environment ◽  
Cooling Capacity ◽  
Cooling Load ◽  
Large Space ◽  
Air Conditioning System ◽  
Load Calculation ◽  
Environment Experiment ◽  
Wall Surface Temperature

A calculation method for cooling load of stratified air conditioning system based on the simultaneously solving model is presented. Thermal environment experiment under summer condition is carried out in a large space building, indoor air temperature, inner wall surface temperature and cooling capacity were obtained; the stratified air conditioning cooling load calculated by the simultaneously solving model is compared with air conditioning cooling capacity in experiment, the relative error is 14%, taking the loss of cooling capacity and leakage loss, it can be thought that the simultaneously solving model can be used to calculate cooling load of stratified air conditioning system.

scholarly journals Optimization method of hourly heat load calculation model for heat storage air-conditioning heating system in different climate zones

2021 ◽  
pp. 014459872110052
Author(s):  
Yuechao Liu ◽  
Dong Guo ◽  
Min Zhou ◽  
Shanshan Wu ◽  
Dongmei Li
Keyword(s):  
Heat Load ◽  
Air Conditioning ◽  
Heat Storage ◽  
Heating System ◽  
Optimization Method ◽  
Calculation Model ◽  
Climate Zones ◽  
Load Calculation ◽  
Typical Day ◽  
Additional Coefficient

One optimization method of hourly heat load calculation model for heat storage air-conditioning heating system in different climate zones was proposed. A building model is initially built in six different climate zones. Subsequently, the hourly heat load and steady-state design heat load in different climate zones were analyzed. Simultaneously, the hourly heat load additional coefficient of the air-conditioning system with different heating modes on a typical day was compared. It can be found that steady-state design heat load on a typical day is mostly between the peak load and average load of the air-conditioning heating system. Simultaneously, results indicate that the hourly heat load additional coefficient in each climate zone can be fitted to different exponential functions. When the heat storage capacity of building components was changed, the maximum increase of the hourly heat load additional coefficient of the air-conditioning system with intermittent heating was 5%. Thus, the research of the optimal design of hourly heat load calculation method provides a relative reference for performance improvement of the heat storage air-conditioning heating system.

Simulation Research About Air Conditioning Load Calculation

2012 ◽  
Vol 433-440 ◽  
pp. 6023-6027
Author(s):  
Hui Fan Zheng ◽  
Ting Ting Xiao
Keyword(s):  
Air Conditioning ◽  
Cooling Load ◽  
Theory Analysis ◽  
Simulation Research ◽  
New Period ◽  
Simulation Calculation ◽  
Load Calculation ◽  
Calculation Point ◽  
History Of ◽  
Air Conditioning Systems

Theory analysis method is adopted in this paper to review the development history of air-conditioning loads calculation, point out that the air-conditioning loads calculation went through from steady calculation to periodic unsteady calculation and then to new period of dynamic load calculation. Simulation calculation of air-conditioning cooling load have been developed deeply, and many software can be used to calculate the hourly cooling load about building. At last, The application of neutral network for prediction of cooling load in air conditioning systems have been introduced.

ANALISIS BEBAN PENDINGINAN PADA COLD STORAGE UNTUK PENYIMPANAN DAGING

2019 ◽  
Vol 7 (1) ◽  
pp. 12-22
Author(s):  
Ratu Mutia Fajarani ◽  
Yopi Handoyo ◽  
Raden Hengki Rahmanto
Keyword(s):  
Experimental Method ◽  
Cold Storage ◽  
Freezing Point ◽  
Cooling Load ◽  
Internal Factors ◽  
External Cooling ◽  
Preservation Method ◽  
Load Calculation ◽  
Selection Of

Cooling is the best preservation method than others because the food that has been cooled will remain fresh and will not experience a change in taste, color and aroma, besides all the activities that cause decay will stop so that the cooled food will last longer. (Hartanto, 1984). With the proper cooling engine planning, it can help with spatial adjustments, adjustments to loading, estimation of the power to be used, and budget plans. That is what is commonly called the cooling load calculation. Calculation of cooling load needs to be carried out before planning. This is necessary because the magnitude of the pending load is very influential on the selection of the cooling engine so that the freezing point for preserving food can be accurate. Pendiginan burden is influenced by external and internal factors. With the experimental method, it is obtained the results of the external cooling load as the external cooling load is 11.6 kW, the inner cooling load is 138.8 kW and the performance work coefficient (COP) is 2.

scholarly journals Safe Separation Distance Calculation Model with Changing Area of Fuel Packages in Large Space

2011 ◽  
Vol 11 ◽  
pp. 666-674
Author(s):  
Zhang Jia-qing ◽  
Lu Shou-xiang ◽  
Yuan Man ◽  
Li Chang-hai ◽  
Li Qiang
Keyword(s):  
Separation Distance ◽  
Calculation Model ◽  
Large Space ◽  
Distance Calculation

Comparison of ASHRAE peak cooling load calculation methods

2018 ◽  
Vol 25 (2) ◽  
pp. 189-208 ◽  
Author(s):  
Chunliu Mao ◽  
Juan-Carlos Baltazar ◽  
Jeff S. Haberl
Keyword(s):  
Cooling Load ◽  
Calculation Methods ◽  
Load Calculation

Thermal performance of silica aerogel-filled double-layer glazing in a subtropical climate

2021 ◽  
Vol 11 (6) ◽  
pp. 974-981
Author(s):  
Yajun Lv ◽  
Yiming Qin ◽  
Julian Wang ◽  
Kui Yin ◽  
Huanchun Huang ◽  
...  
Keyword(s):  
Double Layer ◽  
Silica Aerogel ◽  
Energy Efficient ◽  
Air Conditioning ◽  
Weather Conditions ◽  
Research Topic ◽  
Outdoor Environment ◽  
Subtropical Climate ◽  
Cooling Load ◽  
Space Cooling

Heat gain through glazing is a major source of the space cooling load in subtropical cooling-dominant climates. Application of energy-efficient glazing systems can significantly reduce the energy consumption of air conditioning in summer. Thus, it has become a popular research topic. In this study, a sample of silica aerogel glazing was developed and prepared. Two identical insulated boxes were then constructed; one faÇade was equipped with the aerogel glazing sample and the other was prepared with a conventional double-layer glazing. An onsite measurement of the boxes’ internal thermal properties was then conducted. The two boxes were placed within the same outdoor environment. The temperature, humidity, and enthalpy values were calculated with the boxes facing different orientations and in a variety of weather conditions. The performance of the silica aerogel glazing was then evaluated by both experimental and theoretical analysis. The results of this study will provide a basis for aerogel glass building application guidelines.

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