Practical skills on the topic: Measurement and evaluation of indoor climate

Purpose: This type of research is carried out in almost all controlled objects

To carry out research needed thermometer aspiration psychrometer, anemometer anemometer, as well as relevant SanPin for evaluation and the results obtained.

Algorithm Action A. Research temperature 1. Measure the average room temperature Carry out measurements at least at three points at a height of 1.5 m (in institutions - at a height of 0.8 m) for 3-4 minutes Calculate the average of the results of all measurements

2. Measure the difference (gradient) Vertical: Carry out temperature measurements at a height of 0.1 and 1.1 m Find the gradient (difference) between the measured value 3. Measure the difference (gradient) Horizontal: Carry out temperature measurements at the outer wall and at a distance of 1 m from the wall Find the gradient (difference) of the measured values

B. Research humidity 1. Prepare psychrometer to work: Wet wet bulb distilled water Start the fan and place in the desired location psychrometer

After 7-8 minutes to take readings of dry and wet thermometers On the psychometric table for aspiration psychrometer find the value of the relative humidity, depending on the indications of dry and wet bulb (in the absence of the table can be used calculation method)

С. Investigation of air velocity 1. Anemometer: Record the bar unit Place the device in the desired location, enable cups or loose flaps device Move the lever unit to the on position for three minutes (t, s) Turn off the appliance and take readings on the scale Find the difference between the initial and final readings (A) Calculate the number of revolutions per second (B): B = A: t Find on a schedule attached to the instrument, air velocity (m / s), depending on the number of found / sec.

2. Catathermometer: Lower catathermometer reservoir in hot water, wait for recovery of the alcohol to the upper half of the tank Remove the unit from the water, wipe dry and hang it on a tripod in the test site Secure the descent of alcohol from 38 to 35 ° C (s), t Calculate the cooling capacity of the air: V = F: t Calculate the velocity of air given its cooling capacity V = ((H: Q-0.2): 0.4) m / c

D. Expression of results 1. insert the data in the record 2. discharged from the respective SanPin necessary hygiene requirements 3. To evaluate the results of measurements in relation to the hygienic requirements