Variety of Metric to Measure Heat Exposure – Lab Report Example

The paper "Variety of Metric to Measure Heat Exposure" is a great example of a lab report on environmental studies. Health research on the environment shows a variety of metrics to measure heat exposure. It employs both to directly study outdoor temperature and their effects. In order to measure heat or temperature exposure environmental research normally uses heat index which incorporates both air and moisture. Heat index now is a value that takes both humidity and temperature into account. The higher the heat index then the weather will feel hotter. Hence heat index is a better measure than air temperature alone. Although environmental research and studies differ in how they calculate heat index, most studies the apparent temperatures are consistent with the generated index algorithm. The humidex based on the dew point is a unitless number but is also the same to dry temperatures in degrees Celsius. This experiment aims to address the various health effects on weather, dangers from heat. Dew point is the temperature at moisture in a sample air at a constant pressure condenses into a liquid at the same rate in which it is evaporating; it is also the saturation temperature of water in the air. If there is an increase in temperature then dew point will increase but relative humidity will decrease. In all heat index is a tool used by the meteorologist to know whether it is hot or there is a risk factor for human beings to work in a certain environment. 

Solving for the heat index.
HI=C1+C2T+C3R+C4TR+C5T2+C6R2+C7T2R+C8TR2+C9T2R2
c1 =  -42.379
c2 =  -2.04901523
c3 =  -10.14333127
c4 =  -0.22475541
c5 =  -6.83783 x 10-3
c6 =  -5.481717 x 10-2
c7 =  -1.22874 x 10-3
c8  =  8.5282 x 10-4
c9  =  -1.99 x 10-6
Objective
To estimate WBGTin, WBGTout, relative humidity and dew point.
Instrument and material
1. Ceramic Heater
This is a device used to supplement the heating of the room. It is often portable hence can be moved from one place to the other where warmth is required. It is the most modern heaters for space and it uses a ceramic heating element.
2. 3 thermometers (wet, dry and globe thermometer)
These are the most sensitive thermometers that can provide accurate temperature results between -250 and 1600 degrees Celsius. They notice the difference between hot and cold places, and can also remain steady for a long period of time.
3. Stand
This is a device that was used to support the heater in a particular position for accurate performance.
4. Distilled water
This is a type of water that is formed through distillation to remove most of the impurities.
5. Steel bag
Methodology
Initial values set table 1
Conclusion
There were changes in the temperature in both the digital and analog temperature measurement. This was because of the effect of the heater that raised the temperature of the environment. An increase in temperature causes humidity of that particular environment to decrease but increasing the dew point. The results obtained were not accurate, the reason may be because of some error such as incorrect calibration of the measuring devices such as a thermometer.