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lahle .1 paije 4 <br />iYIK <br />9) using --wage effluent <br />4) using cooling water from thermal <br />electric power- plants <br />1. Cascading or, tier successive use <br />of progressively cooler water, for <br />example w1wn water is treated for <br />Industrial processing the effluent <br />may be used again for direct heat <br />applications. As water is lowered to <br />I100F it could be used for a thito <br />time in a water -source heat pump <br />system for .dditional healing <br />and cool hip necAs <br />Advantages <br />sewage effluent is generally warm and <br />thus Increases the efficiency of the <br />system <br />efficient use of otherwise wasted energy <br />may work well with district heating systems <br />can use otherwise wasted energy <br />01sadvantages <br />- not well developed yet <br />- cost of retrofitting is -prohibitive <br />- May be more efficient to use direct heat applications <br />rather than a heat pump system <br />