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Messages - cmcgugan

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Science / Re: A list of missing feedbacks
« on: August 27, 2019, 05:28:12 PM »
Quote
The optimal ambient operating temperature for a human body in a low activity state is about 20C-24C. Hotter than that, the body has to redirect resources to cool the body, impairing higher cognitive functions.

I'm thinking about our African origins and don't understand the above stated optimal temperature range.
Thermal comfort for humans is based on environmental factors including air temperature, humidity, air movement and radiation from hot and cold surfaces plus body conditions including metabolic rate (how much heat you are generating) and clothing level.  A good tool for predicting comfort can be found at https://cbe.berkeley.edu/project/thermal-comfort-tool/ . In general, the more control people have over their environment, the greater temperature range they will tolerate.  People in sealed buildings expect conditions to be controlled close to setpoints.  People in buildings with operable windows are happy with a wider range of conditions.

2
Policy and solutions / Re: Renewable Energy
« on: July 18, 2018, 04:55:44 AM »
Landfill gas contains siloxanes which are used in cosmetics.
"Siloxanes are a group of man-made organic compounds that can differ in composition. They are frequently found in cosmetic and personal hygiene products, health care, food ingredients, plastics and other industrial products.
Increased usage leads to increased presence in landfill and wastewater processing facilities. When biogas containing siloxanes is combusted, i.e. in a boiler, turbine, generator, or CHP unit, silicone dioxide (SiO2) particles – essentially sand – are created and contaminate engine and exhaust components downstream. " Source: http://www.dcl-inc.com/pdf/siloxane-cleanup/DCLA-Siloxane_Removal_Technology.pdf

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