Ventilation Rates in Schools and Children’s Learning Performance Zsolt Bakó-Biró School of Construction Management and Engineering.

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Presentation transcript:

Ventilation Rates in Schools and Children’s Learning Performance Zsolt Bakó-Biró School of Construction Management and Engineering

Research Team Prof. Derek Clements-Croom (SCME, University of Reading) Dr. Hazim Awbi (SCME, University of Reading) Dr. Marylin Williams (School of Psychology, University of Reading) Dr. David Coley (Centre for Energy & Environment, University of Exeter) Dr. Neena Kochhar (SCME, University of Reading) Dr. Zsolt Bakó-Biró (SCME, University of Reading)

Objectives To extend our knowledge about IAQ and typical ventilation rates in school environments To determine a direct relationship between IAQ and pupils’ learning performance.

Methods School selection: 20 primary schools in Reading & Exeter Targeted age group: 9-11 years old children Measurements: objective & subjective evaluations (repeated design) (2-3 weeks / school for 2 years) Intervention: to increase the ventilation rates above 8 L/s per person

Physical measurements Continuous monitoring Spot measurements: Noise level Ozone level (Indoors/Outdoors) Air change rate (SF6), TVOC, Selected VOCs Air temperature & Relative Humidity (RH) Globe temperature Air velocity Carbon dioxide (CO 2 ) Airborne particles (PM1, PM2.5, PM10) Lighting

Data collection

Classroom setup

Subjective evaluations Classroom noisy Classroom quiet Air humid Air dry Air stuffy Air fresh Classroom dark Classroom bright Classroom environment

Subjective evaluations Nose dry Nose running Nose blocked Nose clear Throat dryThroat not dry SBS symptoms & other questions Eyes dryEyes not dry Mouth dryMouth not dry Eyes itchyEyes not itchy

Subjective evaluations SBS symptoms & other questions TiredNot tired SleepyAlert Slept badSlept good Feeling badFeeling good HungryFull HeadacheNo Headache DreamyAttentive DizzyNot dizzy Do not feel like working today Feel like working today

Pupils’ Performance Tests Computerised Assessment Tests (CAT) (attention, concentration and memory) Pen and Paper (school based) performance activities 24 pupils/classroom groups of 6-8 people

CAT - battery 1. Simple Reaction Time 2. Choice Reaction Time 3. Colour Word Vigilance 4. Digit classification 5. Digit-symbol matching 6. Reaction time - addition 7. Digit span memory 8. Picture recall memory 9. Verbal Reasoning 10. Words recognition Attention / vigilance Perceptual speed Speed of mental arithmetic Working memoryLanguage based

CAT battery Simple Reaction Time Simple Reaction Time: 16 signals / minute. Randomized intervals between 2 – 5 seconds

Choice Reaction Time: CAT battery 16 signals / minute. Randomized intervals between 2 – 5 seconds

Colour Word Vigilance Test response is required only to a minority of the signals Red Yellow Blue White Red Yellow Blue White CAT battery 30 signals / minute at constant intervals Random distribution within each sequence of 16 stimuli

Pen and Paper (school based) Activities Math based : Addition : 26 +or Subtraction : 86 -or Multiplication: 8 x 264 Number comparison: False x x

Pen and Paper (school based) Activities Language-based: Logical reasoning : StatementTrueFalse AB A does not precede B x BA B is followed by A x

Outcomes To recommend suitable ventilation rates for classrooms. To examine the suitability of the air quality guidelines for classrooms based on the results obtained To develop a website displaying the main research findings.

Thank You

Program interface

Interpretation