Attempt to Improve Indoor Air Quality in Computer Laboratories

Telejko, Marek

doi:10.1016/j.proeng.2017.02.134

Cited by 12 publications

(16 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Also [13] states that the CO 2 level exceeded (1200 ppm) the recommended value. However, there are differences in temperature values, [9] research recorded temperatures close to 30 ºC, in our case the maximum was close to 26 ºC, but [13] recorded values about 19 ºC. Relative humidity values, by [9] experiments, were below 40 % outside teaching hours and did not exceed the maximum recommended values.…”

Section: Fig 3 Microclimate Parameter Fluctuations When Window Was contrasting

confidence: 41%

“…The author [9] states that the CO 2 level at the beginning of each class (student count 15-18) increased rapidly by exceeding the recommended value (during the day even over 3000 ppm), but the lowest concentration (from 419 ppm to 517 ppm) was registered at night or before the first class. This was observed also in our case, where the rapid CO 2 level increase can be clearly seen in Fig.…”

Section: Fig 3 Microclimate Parameter Fluctuations When Window Was mentioning

confidence: 99%

“…The indoor air humidity has to be 30-70 % [8]. Several articles and sources [9][10][11][12] state that the recommended maximum level of CO 2 concentration is 1000 ppm. By [10], air that has the CO 2 concentration level in range of 350-1000 ppm is good and does not cause health problems; 1000-2000 ppm is considered poor and causes drowsiness; 2000-5000 ppm is considered as stale, stuffy air and causes headaches, sleepiness and loss of attention, and increases the heart rate.…”

Section: Introductionmentioning

confidence: 99%

“…In [13] research the authors used TSI DustTruck instrument to measure the classroom air quality parameters. In Poland similar research was conducted -microclimate parameters in University computer laboratories were measured and it was discovered that in these computer laboratories the indoor air quality was poor due to improper management of air exchange [9]. In Liepaja [14] there was research conducted during the heating season.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Development of classroom microclimate monitoring system

Kviesis¹,

Klavina²,

Vītols³

2017

Engineering for Rural Development

View full text Add to dashboard Cite

Abstract. Microclimate in classrooms can affect students' productivity. Since nowadays students and existing specialists of various fields, including engineering, most of the day spend indoors, it is important to ensure quality environment that would increase their productivity. It is important to pay attention to room microclimate factors that include temperature, air humidity and quality. Microclimate requirements are also regulated in the country legislation and organizations have to follow certain requirements. Therefore, it is important to perform detailed monitoring of microclimate. As technologies evolve there are various sensors offered in market that perceive certain microclimate parameters. These parameters inadequacy to recommended indicators can cause all kinds of health and work quality affecting problems as headaches, sleepiness, tiredness that results with lower concentration powers. In this research technological solutions for microclimate monitoring were introduced as a system prototype that measures microclimate parameters in classrooms. The monitoring system is based on the Arduino platform with sensors for measuring air temperature, humidity and carbon dioxide level. Additionally, a desktop application was developed to represent data remotely and receive warnings about microclimate indicator deviation from the recommended values. The developed system is used to monitor microclimate in the computer room at the Faculty of Information Technologies, Latvia University of Agriculture. During the research it was concluded that in non-ventilated room the CO 2 level was always above the recommended value (1000 ppm) about 1500 ppm, temperature was slightly over the maximum recommended value (25 ºC) but relative humidity was slightly over the minimum recommended value (30 %). The developed prototype can be scalable and adjusted for application in multiple buildings and organizations.

show abstract

Section: Fig 3 Microclimate Parameter Fluctuations When Window Was contrasting

confidence: 41%

Section: Fig 3 Microclimate Parameter Fluctuations When Window Was mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Development of classroom microclimate monitoring system

Kviesis¹,

Klavina²,

Vītols³

2017

Engineering for Rural Development

View full text Add to dashboard Cite

show abstract

“…Therefore, it seems extremely important to determine the thermal comfort evaluation in such rooms as selected by the authors for analysis. They are characterised by rapid and relatively large changes in the parameters listed above [8]. These changes result from the characteristic equipment of computer laboratories and the specificity of their users' behaviour (regular airing of rooms during breaks between classes).…”

Section: Introductionmentioning

confidence: 99%

Thermal Comfort in University Computer Laboratories

Telejko

Stachera

2018

SAE

Self Cite

View full text Add to dashboard Cite

A b s t r a c tThermal comfort defines the state of satisfaction of a person or a group of people with thermal conditions of the environment in which the person, or the group of people is staying. The state of satisfaction depends on the balance between the amount of heat produced by the organism in the process of metabolism and heat loss from the organism to the surrounding environment. It has an effect on the quality and efficiency at work, and indirectly also on the presence of symptoms of Sick Building Syndromes (SBS). Due to differences in body structure, metabolism, clothing etc., it is not possible to create a satisfactory thermal environment for all the people staying in it. However, there are parameter values, which maintained at an appropriate level, allow to meet thermal expectations of even 95% of people staying in this environment. The article presents the results of tests conducted in the university computer rooms. The studies included measurements and analysis of typical internal microclimate parameters: temperature, relative humidity and CO 2 concentration. The results raised considerable reservations and therefore in order to assess fully the conditions of use, it has been decided to conduct evaluation of thermal comfort in rooms analysed. In addition, the surrounding surface radiation temperature and clothing insulation of users have been specified. On the basis of the obtained data, PPD and PMV index values were determined in accordance with the standard EN ISO 7730:2005 Ergonomics of the thermal environment -Analytical determination and interpretation of thermal comfort using calculation of the PMV and PPD indices and local thermal comfort criteria [3]. S t r e s z c z e n i eKomfort cieplny określa stan zadowolenia osoby lub grupy osób z warunków termicznych środowiska, w którym osoba ta lub grupa osób przebywa. Ten stan zadowolenia zależny jest od równowagi pomiędzy ilością ciepła wytwarzanego przez organizm w procesie metabolizmu a stratami ciepła z organizmu do otaczającego go środowiska. Ma on wpływ na jakość i wydajność pracy, a pośrednio również na występowanie symptomów syndromów chorego budynku (SBS). Na skutek różnic w budowie ciała, metabolizmie, ubiorze etc. nie ma możliwości stworzenia środowiska cieplnego odpowiadającego wszystkim przebywającym w nim osobom. Istnieją jednak wartości parametrów, które utrzymane na odpowiednim poziomie, pozwalają na spełnienie oczekiwań termicznych nawet 95% ludzi przebywających w tym środowisku. W artykule zaprezentowano wyniki badań przeprowadzonych w pomieszczeniach komputerowych uczelni wyższej. Badania obejmowały pomiary oraz analizę typowych parametrów mikroklimatu wewnętrznego: temperatury, wilgotności względnej oraz stężenia CO 2 . Uzyskane wyniki budziły spore zastrzeżenia, dlatego w celu pełnej oceny warunków użytkowania zdecydowano się na przeprowadzenie oceny komfortu termicznego analizowanych pomieszczeń. Dodatkowo określono zatem temperaturę promieniowania powierzchni otaczających i izolacyjność odzieży użytkowników. Na podstawie otr...

show abstract

Bioaerosols: An Unavoidable Indoor Air Pollutant That Deteriorates Indoor Air Quality

Kallawicha

Chao

2022

Internet of Things

View full text Add to dashboard Cite

Attempt to Improve Indoor Air Quality in Computer Laboratories

Cited by 12 publications

References 0 publications

Development of classroom microclimate monitoring system

Development of classroom microclimate monitoring system

Thermal Comfort in University Computer Laboratories

Bioaerosols: An Unavoidable Indoor Air Pollutant That Deteriorates Indoor Air Quality

Contact Info

Product

Resources

About