Featured Research

from universities, journals, and other organizations

New device monitors schoolroom air for carbon dioxide levels that may make kids drowsy

Date:
August 22, 2012
Source:
American Chemical Society (ACS)
Summary:
With nearly 55 million students, teachers and school staff about to return to elementary and secondary school classrooms, scientists have developed a new hand-held sensor - practical enough for wide use - that could keep classroom air fresher and kids more alert for learning.

With nearly 55 million students, teachers and school staff about to return to elementary and secondary school classrooms, scientists have now described a new hand-held sensor ― practical enough for wide use ― that could keep classroom air fresher and kids more alert for learning.

They reported on the device at the 244th National Meeting & Exposition of the American Chemical Society being held in Philadelphia the week of August 20. The sensor detects the amount of carbon dioxide (CO2) in classroom air. The average person in the course of normal breathing exhales about 2 pounds of that colorless, odorless gas each day.

"Poor air quality in school classrooms is a growing concern," said Jack N. Driscoll, Ph.D., who led the team that developed the sensor at his firm, PID Analyzers, LLC, Sandwich, Mass. "Many school districts are in the midst of budget crunches that have delayed construction of new facilities. As a result, school classrooms are getting more crowded, with occupancy levels as high as one person for every 40 square feet. The average office worker has about 140 square feet of space."

Energy conservation is another factor, Driscoll said, noting that newer school buildings are more tightly sealed against drafts. Unless heating and air-conditioning systems are ventilating the building properly, stale air can get trapped in classrooms. For example, in the past, air in the typical school classroom was refreshed 4-6 times an hour. In energy-efficient classrooms, there may be only 1-2 exchanges per hour.

The new so-called "dual-beam" sensor is simpler and less expensive than past CO2 monitors and more stable than those so-called "single-beam sensors." It requires calibration to ensure accuracy only once or twice a year, compared to weekly calibrations for existing devices. Driscoll added that the new sensor is simple enough for anyone to operate, and can collect data for up to 450 hours. The remedy for poor classroom air quality often is simple and inexpensive, he added. It may involve replacing dirty air filters or adjusting the speed of blowers in the heating or air conditioning system.


Story Source:

The above story is based on materials provided by American Chemical Society (ACS). Note: Materials may be edited for content and length.


Cite This Page:

American Chemical Society (ACS). "New device monitors schoolroom air for carbon dioxide levels that may make kids drowsy." ScienceDaily. ScienceDaily, 22 August 2012. <www.sciencedaily.com/releases/2012/08/120822181222.htm>.
American Chemical Society (ACS). (2012, August 22). New device monitors schoolroom air for carbon dioxide levels that may make kids drowsy. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2012/08/120822181222.htm
American Chemical Society (ACS). "New device monitors schoolroom air for carbon dioxide levels that may make kids drowsy." ScienceDaily. www.sciencedaily.com/releases/2012/08/120822181222.htm (accessed July 31, 2014).

Share This




More Health & Medicine News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

House Republicans Vote to Sue Obama Over Healthcare Law

House Republicans Vote to Sue Obama Over Healthcare Law

Reuters - US Online Video (July 31, 2014) The Republican-led House of Representatives votes to sue President Obama, accusing him of overstepping his executive authority in making changes to the Affordable Care Act. Mana Rabiee reports. Video provided by Reuters
Powered by NewsLook.com
Despite Health Questions, E-Cigs Are Beneficial: Study

Despite Health Questions, E-Cigs Are Beneficial: Study

Newsy (July 31, 2014) Citing 81 previous studies, new research out of London suggests the benefits of smoking e-cigarettes instead of regular ones outweighs the risks. Video provided by Newsy
Powered by NewsLook.com
Dangerous Bacteria Kills One in Florida

Dangerous Bacteria Kills One in Florida

AP (July 31, 2014) Sarasota County, Florida health officials have issued a warning against eating raw oysters and exposing open wounds to coastal and inland waters after a dangerous bacteria killed one person and made another sick. (July 31) Video provided by AP
Powered by NewsLook.com
Health Insurers' Profits Slide

Health Insurers' Profits Slide

Reuters - Business Video Online (July 30, 2014) Obamacare-related costs were said to be behind the profit plunge at Wellpoint and Humana, but Wellpoint sees the new exchanges boosting its earnings for the full year. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins