Live Covid-19
United States 104,488,837
Cases: 104,488,837
Deaths: 1,136,313
Recovered: 101,575,749
Active: 1,776,775
India 44,683,454
Cases: 44,683,454
Deaths: 530,745
Recovered: 44,150,892
Active: 1,817
France 39,533,323
Cases: 39,533,323
Deaths: 164,286
Recovered: 39,288,720
Active: 80,317
Germany 37,822,577
Cases: 37,822,577
Deaths: 166,128
Recovered: 37,451,400
Active: 205,049
Brazil 36,868,946
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Deaths: 697,361
Recovered: 35,953,131
Active: 218,454
Japan 32,760,317
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Active: 11,082,001
South Korea 30,263,261
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Italy 25,488,166
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United Kingdom 24,293,752
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Russia 22,004,828
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Turkey 17,042,722
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Spain 13,740,531
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Vietnam 11,526,577
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Australia 11,312,904
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Argentina 10,037,135
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Deaths: 130,421
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Taiwan 9,685,484
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Deaths: 16,750
Recovered: 9,228,369
Active: 440,365
Netherlands 8,583,669
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Deaths: 22,989
Recovered: 8,551,642
Active: 9,038
Iran 7,564,881
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Mexico 7,389,670
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Indonesia 6,731,304
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Active: 4,062
Poland 6,383,225
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Colombia 6,357,200
Cases: 6,357,200
Deaths: 142,544
Recovered: 6,181,431
Active: 33,225
Austria 5,803,370
Cases: 5,803,370
Deaths: 21,755
Recovered: 5,744,784
Active: 36,831
Greece 5,723,715
Cases: 5,723,715
Deaths: 35,822
Recovered: 5,672,479
Active: 15,414
Portugal 5,564,254
Cases: 5,564,254
Deaths: 26,033
Recovered: 5,534,306
Active: 3,915
Ukraine 5,373,104
Cases: 5,373,104
Deaths: 111,063
Recovered: 5,255,195
Active: 6,846
Chile 5,128,130
Cases: 5,128,130
Deaths: 63,895
Recovered: 5,059,720
Active: 4,515
Malaysia 5,037,995
Cases: 5,037,995
Deaths: 36,943
Recovered: 4,990,977
Active: 10,075
Israel 4,788,158
Cases: 4,788,158
Deaths: 12,203
Recovered: 4,770,957
Active: 4,998
North Korea 4,772,813
Cases: 4,772,813
Deaths: 74
Recovered: 4,772,739
Active: 0

Evaluation of the Influence of Natural Ventilation Variables on Indoor Thermal Comfort of Occupants of Secondary School Classrooms During Hot Season in Enugu Metropolis, Nigeria

Evaluation of the Influence of Natural Ventilation Variables on Indoor Thermal Comfort of Occupants of Secondary School Classrooms During Hot Season in Enugu Metropolis, Nigeria

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  • October 3, 2022
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ABSTRACT

In tropical countries, the effect of climate change and its consequent temperature rise are sources of worry to many environmentalists and concerned citizen worldwide. Building sector consume great quantity of energy which involves burning of fossil fuel that contributes significant amount of greenhouse gas emissions into the atmosphere. Improving proving thermal comfort of occupants in a free-running building and avoiding active and fossil-based systems, is the main challenge in many cities all over the world. This paper therefore focused on the evaluation of the influence of natural ventilation on indoor thermal comfort of occupants of secondary school classroom during the hot season in Enugu Metropolis. Both primary and secondary sources of data were adopted. Data collecting instruments include Digital Anemometer and Thermometers. Results of the descriptive analysis of data collected showed that high indoor temperature range of between 29.8oC and 35.3o C was main the factor that caused indoor discomfort during dry season. There was also low air velocity range of between 0,11m/s and 0.5m/s and the existing Window-to-Wall Ratio (WWR) obtained spans between 13% and 21% for the classrooms examined. From the result of the regression analysis used to evaluate the influence of natural ventilation variables on indoor comfort, the probability values of indoor air temperature, indoor air velocity and indoor relative humidity were (0.0209), (0.0498) and (0.1382). This result implied that, indoor temperature and indoor air velocity had significant influence on the thermal comfort conditions of the classrooms as the probability values were less than significance level of 0.05. Whereas, indoor relative humidity had no significant influence on the thermal comfort condition as the probability value was above significance level of 0.05. The conclusion was that to improve indoor comfort in classrooms, efforts should focus on increasing air flow rate through the classrooms and this would facilitate the reduction of indoor temperature

Keywords: Natural Ventilation Variables; Indoor Thermal Comfort; Hot Season; Enugu Metropolis

Authorship: Offor, J. N. PhD and Chijioke, O. E. PhD | FULL PDF

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