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Tech/Engineering - Engineering (general) | | English term or phrase: blowdown | This patented technology, enables the plant to use recycled cooling tower water for lime slakers and pug mills, eliminate blowdown discharged into the Tar River, decrease operational costs and increase the efficiency of the cooling tower system by chemically reducing scaling and fouling.
What is meant by blowdown in this case? |
|  langclinicKudoZ activityQuestions: 491 ( 1 open) ( 3 without valid answers) ( 4 closed without grading) Answers: 1489
India
| | Local time: 06:33
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| | English translation:water released to discard solids | Explanation:
Here is what I have found online:
http://www.cheresources.com/ctowerszz.shtml
Operation Considerations
Water Make-up
Water losses include evaporation, drift (water entrained in discharge vapor), and blowdown (water released to discard solids). Drift losses are estimated to be between 0.1 and 0.2% of water supply
Blow-Down Water Introduction
The water that is drained from cooling equipment to remove mineral build-up is called “blow-down” water or “bleed” water. The cooling equipment that requires blow-down is most often: cooling towers, evaporative condensers, evaporative coolers, evaporative cooled air-conditioners, and central boilers (both steam and hot water). These cooling systems rely on water evaporation to garner the cooling effect (latent heat of evaporation). As the water evaporates, the mineral content (calcium carbonate, magnesium, sodium, salts, etc) of the remaining water increases in concentration of minerals. If left undiluted, these minerals will cause scaling on equipment surfaces; possibly damaging the system. The blow-down water is usually dumped into the wastewater drain, yet in some cases, this water can be reused for irrigation and other selected uses. For more information on these cooling systems and related water use, please see:
Evaporative Cooling Introduction
Cooling Tower Introduction
http://www.answers.com/topic/blowdown
(′blō′dau̇n)
(chemical engineering) Removal of liquids or solids from a process vessel or storage vessel or a line by the use of pressure.
(mechanical engineering) The difference between the pressure at which the safety valve opens and the closing pressure. Also known as blowback.
(meteorology) A wind storm that causes trees or structures to be blown down.
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Note added at 1 hr (2010-10-18 03:30:42 GMT)
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Excuse me...I forgot to add this: The "Blowdown Water Introduction" paragraph is taken from the following website: http://www.allianceforwaterefficiency.org/blow_down_water_in... |
| Selected response from:
Joyce A
Thailand
Local time: 08:03
| Grading comment Thanks a lot.
4 KudoZ points were awarded for this answer |
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| Discussion entries: 0 |
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Automatic update in 00:
|
1 hr confidence:   peer agreement (net): +3 water released to discard solids
Explanation:
Here is what I have found online:
http://www.cheresources.com/ctowerszz.shtml
Operation Considerations
Water Make-up
Water losses include evaporation, drift (water entrained in discharge vapor), and blowdown (water released to discard solids). Drift losses are estimated to be between 0.1 and 0.2% of water supply
Blow-Down Water Introduction
The water that is drained from cooling equipment to remove mineral build-up is called “blow-down” water or “bleed” water. The cooling equipment that requires blow-down is most often: cooling towers, evaporative condensers, evaporative coolers, evaporative cooled air-conditioners, and central boilers (both steam and hot water). These cooling systems rely on water evaporation to garner the cooling effect (latent heat of evaporation). As the water evaporates, the mineral content (calcium carbonate, magnesium, sodium, salts, etc) of the remaining water increases in concentration of minerals. If left undiluted, these minerals will cause scaling on equipment surfaces; possibly damaging the system. The blow-down water is usually dumped into the wastewater drain, yet in some cases, this water can be reused for irrigation and other selected uses. For more information on these cooling systems and related water use, please see:
Evaporative Cooling Introduction
Cooling Tower Introduction
http://www.answers.com/topic/blowdown
(′blō′dau̇n)
(chemical engineering) Removal of liquids or solids from a process vessel or storage vessel or a line by the use of pressure.
(mechanical engineering) The difference between the pressure at which the safety valve opens and the closing pressure. Also known as blowback.
(meteorology) A wind storm that causes trees or structures to be blown down.
--------------------------------------------------
Note added at 1 hr (2010-10-18 03:30:42 GMT)
--------------------------------------------------
Excuse me...I forgot to add this: The "Blowdown Water Introduction" paragraph is taken from the following website: http://www.allianceforwaterefficiency.org/blow_down_water_in...
| Joyce A
Thailand
Local time: 08:03
Native speaker of:  English
PRO pts in category: 4
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The translation workplace 
