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Ancient AC units or "relative humidity is more important".
by Hakan Falk, "Energy Saving Now"
A forgotten AC unit technique is the beaded rope curtains from Asia, often thinner ropes with glass pearls in different colors and covering entrance openings like doors and windows. Originally they were kept humid with moving water that had a lower temperature than the air temperature, by the staff or in advanced cases from a stream. The effect is that warm humid air that passes will cool down and, most important, deposit more humidity to the rope curtain. The air at a certain temperature can only contain a given amount of water, 100% humidity at a given temperature, cold air can include less than warm air. If warm air with high temperature is cooled down, it cannot keep the same water content and will dispose of excess to surfaces or as rain. This is described in the French scientist Mollier's diagram. After the air passes it warms up again, but now it becomes much dryer. The uptake of the body's transpiration is improved in a significant way and the sensation are cooler air and better comfort, even if the air temperature is only slightly lower or do not change. This because the body can maintain its temperature range with less difficulties.
The ancient palace gardens have often many fountains, often supplied and driven by nearby cold natural streams. The air movement passes through the cascades of the fountains and the effect is drying of air, This make people feel comfortable in the shadows of the garden and close to fountains. A variant of rope curtains.
If you are in a city square with fountains, people will often be drawn close to the fountains, because they feel better there, during warm and humid summer days. Again the rope curtain.
effect.
During the days at the beach, it is generallt a more comfortable area, where people like to be during hot summer days. The reason is that it is an area with colder temperatures, wind and lower humidity, which make it comfortable for humans. Because the water temperature is lower than the land surface temperatures, an air movement is taking place, that we call sea breeze. The air closest to the water cools down and loses the excess water to the sea, but are still humid. The wind moves the air to the land mass, that quickly warms it up and make it dryer in the zone closest to the water. Further inland a humidity equalization take place and the air is again warm and humid.
It is very important that people involved in the design of our dwellings, understand and adopt to our environment and inhabitants. One sample is "
cooling the body by raising the room temperature", in which I describe how it could be used in an emergency situation.
It is too large amounts of energy used to fight and change our environment, instead of adapting to it. Energy saving measures are therefore positive and often better solutions, which does not mean less comfort or austerity. It is much better to invest a little bit energy in brain activities, to save energy in all other areas, and this is maybe the most energy efficient activity that we can do.
Hakan Falk
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BIOFUELS ASIA
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2008 - 27th-28th March 2008,
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Energy Savings in
UK
Energy Savings in
USA
"Disturbed children"
and
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