By Arthur Bowen
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Additional info for Passive and Low Energy Alternatives I. The First International PLEA Conference, Bermuda, September 13–15, 1982
Loss to sky 0 High convectlve and conductive los to ambient air 0 Moderate thermal r a d . loss to sky 0 Moderate convective ft conductive loss to ambient a i r 0 Moderate humidity but no p e r s p i r a t i o n exists 0 A i r motion i s undesirable 0 Moderate convective & conductive loss to ambient a i r 0 Heat conservation mandatory 0 Acceptable humidity 0 Airmotion Is undesirable 0 Moderate r a d i a t i o n loss to sky 0 Moderate convectlve and conduc t i v e loss to ambient a i r . 0 Warmth conservation mandatory 0 Moderate r a d i a t i o n loss to sky 0 Moderate convectlve and conduc t i v e loss to ambient a i r 0 S i t e v e n t i l a t i o n is undesirable vdtinn n yitfll WARM HOT 0 High convectlve and conductive loss to ambient air 0 Heat conservation Is mandatory 0 A1r motion 1s undesirable 0 High thermal radiative & conduc tive heat loss to sky & ground 0 High convectlve loss to air 0 Heat preservation Is mandatory 0 Airflow control Is critical 0 Moderate solar r a d .
Salt and some toxic pollutants, such as arsenic, are released in oil shale processing; but these are not as major a concern as the possible carcinogens associated with coal con version waste water. This health hazard is of aesthetic concern due to the anticipated change in land uses from contaminated waters. The The visual impact of pipelines greatest problem with oil shale retorting (the on the land is significant. process of heating the rock to drive off the oil and gas) is the wastes. The spent rock expands to about 120% of its original size, and where to put it is a problem.
Electricity Transmission Distribution right-of-ways for electricity transmission consume vast amounts of land. The visual intrusion of towers and their col high tension lective impact on the landscape is a major tlines aesthetic concern. Common voltage lines and their respective right-of-way widths are as follows: 1) 250,000 volts, 46 m (150 feet); 2) 138,000 volts, 30 m (100 feet) in wooded areas and 21 m (70 feet) in open country; 3) 69,000 volts and subtransmission lines of 12,000 volts, 15 m (50 feet) minimum; and 4) 4,160 volt distri bution lines, clear path through trees.
Passive and Low Energy Alternatives I. The First International PLEA Conference, Bermuda, September 13–15, 1982 by Arthur Bowen