WaterCapacity - Revision history

WikiSysop: /* Calculating Water Capacity */

2015-12-05T16:21:24Z

‎Calculating Water Capacity

WikiSysop: /* Conclusion */

2015-11-29T23:03:02Z

‎Conclusion

WikiSysop: /* Conclusion */

2015-11-29T21:12:52Z

‎Conclusion

WikiSysop: /* Conclusion */

2015-11-29T21:09:35Z

‎Conclusion

WikiSysop: /* Conclusion */

2015-11-29T21:08:36Z

‎Conclusion

WikiSysop: /* Calculating Water Capacity */

2015-11-29T18:55:01Z

‎Calculating Water Capacity

WikiSysop: /* Calculating Water Capacity */

2015-11-29T17:28:17Z

‎Calculating Water Capacity

WikiSysop: /* Calculating Water Capacity */

2015-11-29T17:25:16Z

‎Calculating Water Capacity

WikiSysop: /* Water Capacity */

2015-11-29T17:18:54Z

‎Water Capacity

WikiSysop: /* Design Considerations */

2015-11-29T17:18:05Z

‎Design Considerations

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 For a standard office, guidelines are 25 gal/day per person but have been shown to be as low as 6.8 with conservation measures <ref>http://ncprojectgreen.com/</ref>. Of course, office estimates don’t include cooking, showering and washing clothes, etc.
-For domestic consumption, [http://www.watertechonline.com/ WaterTech.Online] also recommends 25 gal/day per person but [http://www.nrcan.gc.ca/ Natural Resources Canada] (NRCan) estimates real usage as 88 gal/day.
+For domestic consumption, [http://www.watertechonline.com/ WaterTech.Online] also recommends 25 gal/d per person but [http://www.nrcan.gc.ca/ Natural Resources Canada] (NRCan) estimates real usage as 88 gal/d.
-NRCan says average daily consumption is 1000 L/day (264 gals) for three people with 40% for toilets. This puts Canadians among the thirstiest on the planet. Must be all the Beer! More Beer! My toilet flushes with 1.6 gal so NRCan assumes I hit it 22 times a day, or about every 45 min. Putting aside the toilet jibe, I find 88 gal realistic, as shown later.
+NRCan says average daily consumption is 1000 l/d (264 gal) for three people with 40% for toilets. This puts Canadians among the thirstiest on the planet. Must be all the Beer! More Beer! My toilet flushes with 1.6 gal so NRCan assumes I hit it 22 times a day, or about every 45 min. Putting aside the toilet jibe, I find 88 gal realistic, as shown later.
 [http://www.ec.gc.ca/eau-water/ Environment Canada] estimates daily per capita usage as 79 gals. <ref>https://www.ec.gc.ca/indicateurs-indicators/default.asp?lang=en&n=7E808512-1</ref>
-Vendor specifications also indicate that many marine toilets require 3-5 gal per flush, with the most efficient (VacuFlush) requiring only 0.10 gal./0.39 liter.<ref>http://www.dometic.com/USA/MS-11346-Marine/PG-11395-Toilet-Systems#q2</ref>  The more profligate ones can use seawater but VacuFlush requires fresh water.
+Vendor specifications also indicate that many marine toilets require 3-5 gal per flush, with the most efficient (VacuFlush) requiring only 0.10 gal/0.39 liter.<ref>http://www.dometic.com/USA/MS-11346-Marine/PG-11395-Toilet-Systems#q2</ref>  The more profligate ones can use seawater but VacuFlush requires fresh water.
 Other sources estimate that domestic hot-water consumption alone runs 20-35 gal/day per person, with a peak demand of 10 gal. To meet such a peak demand, the [[HotWaterHeater|hot water heater]] must deliver 10 gal/person at any time. Additional capacity is needed for appliances, such as dishwashers.

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 == Conclusion ==
-Before doing the above test, I had settled on 25 gal/person/day as a design goal. Afterwards, and because water capacity is so critical for a live-aboard, I increased this to 60 gal/person per day overall. With a 250-gal water tank, this gives a base cruising capacity of two days for two people. A 500-gal tank would provide the same for four people. A [[Watermaker|watermaker]] would have to supplement this for extended cruises.
+Before doing the above test, I had settled on 25 gal/person/day as a design goal. Afterwards, and because water capacity is so critical for a live-aboard, I increased this to 60 gal/person per day overall. With a 250-gal water tank, this gives a base cruising capacity of two days for two people. A 500-gal tank would provide the same for four people. A [[Watermakers|watermaker]] would have to supplement this for extended cruises.
 [[Category:FreshwaterSystems]]

@@ Line 63: / Line 63: @@
 == Conclusion ==
-Before doing the above test, I had settled on 25 gal/person/day as a design goal. Afterwards, and because water capacity is so critical for a live-aboard, I increased this to 60 gal/person per day overall. With a 250-gal water tank, this gives a base cruising capacity of two days for two people. A 500-gal tank would provide the same for four people. A watermaker would have to supplement this for extended cruises
+Before doing the above test, I had settled on 25 gal/person/day as a design goal. Afterwards, and because water capacity is so critical for a live-aboard, I increased this to 60 gal/person per day overall. With a 250-gal water tank, this gives a base cruising capacity of two days for two people. A 500-gal tank would provide the same for four people. A [[Watermaker|watermaker]] would have to supplement this for extended cruises.
 [[Category:FreshwaterSystems]]

← Older revision		Revision as of 21:09, 29 November 2015
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	Before doing the above test, I had settled on 25 gal/person/day as a design goal. Afterwards, and because water capacity is so critical for a live-aboard, I increased this to 60 gal/person per day overall. With a 250-gal water tank, this gives a base cruising capacity of two days for two people. A 500-gal tank would provide the same for four people. A watermaker would have to supplement this for extended cruises		Before doing the above test, I had settled on 25 gal/person/day as a design goal. Afterwards, and because water capacity is so critical for a live-aboard, I increased this to 60 gal/person per day overall. With a 250-gal water tank, this gives a base cruising capacity of two days for two people. A 500-gal tank would provide the same for four people. A watermaker would have to supplement this for extended cruises

−	[[Category:~~FreshWaterSystems~~]]	+	[[Category:FreshwaterSystems]]

← Older revision		Revision as of 21:08, 29 November 2015
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	Before doing the above test, I had settled on 25 gal/person/day as a design goal. Afterwards, and because water capacity is so critical for a live-aboard, I increased this to 60 gal/person per day overall. With a 250-gal water tank, this gives a base cruising capacity of two days for two people. A 500-gal tank would provide the same for four people. A watermaker would have to supplement this for extended cruises		Before doing the above test, I had settled on 25 gal/person/day as a design goal. Afterwards, and because water capacity is so critical for a live-aboard, I increased this to 60 gal/person per day overall. With a 250-gal water tank, this gives a base cruising capacity of two days for two people. A 500-gal tank would provide the same for four people. A watermaker would have to supplement this for extended cruises
		+
		+	[[Category:FreshWaterSystems]]

@@ Line 48: / Line 48: @@
 * Cooking 0.25 gal/d
 * Household cleansing 0.25 gal/d
 == Reduce Consumption ==

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 Other sources estimate that domestic hot-water consumption alone runs 20-35 gal/day per person, with a peak demand of 10 gal. To meet such a peak demand, the [[HotWaterHeater|hot water heater]] must deliver 10 gal/person at any time. Additional capacity is needed for appliances, such as dishwashers.
-Other capacity recommendations for hot water tanks range from 7 gal per person to as high as 17 gal.
+Other capacity recommendations for hot water range from 7 gal per person to as high as 17 gal.
-In tests in my apartment taking showers not baths I observed a daily consumption of about 40 gal. Taking a bath (52-in bath) quickly jacked the number up into the NRCan realm. These are the results of the tests:
+In tests taking showers not baths the observed daily consumption was about 40 gal. Taking a bath (52-in bath) quickly jacked the number up into the NRCan realm. These are the results of the tests:
 * Bathing

@@ Line 44: / Line 44: @@
 * Dish washing 4 gal/d (4 @ 1 gal)
 * Laundry 2 gal/d (pro-rated from 14 gal/week)
-* Hand washing 2 gal/d (4 @ o.5 gal)
+* Hand washing 2 gal/d (4 @ 0.5 gal)
 * Drinking 1 gal/d (mostly Twinings Earl Grey tea)
 * Cooking 0.25 gal/d

@@ Line 1: / Line 1: @@
 = Water Capacity =
-Standard estimates of water consumption for yachtsmen assume a certain lifestyle. But everyone’s comfort level is different.
+Standard estimates of water consumption for yachters assume a certain austere lifestyle. But everyone’s comfort level is different.
 == Design Considerations ==

@@ Line 5: / Line 5: @@
 == Design Considerations ==
-There are many estimates of water consumption available for yachtsmen. But it is better to start with first principles when designing your system. If your boay is intended as a live-aboard in all seasons, while remaining qualified as a passagemaker, getting the heating, air conditioning and water systems right-sized is critical from a comfort and energy-efficiency aspect.
+There are many estimates of water consumption available for yachters. But it is better to start with first principles when designing your system. If your boay is intended as a live-aboard in all seasons, while remaining qualified as a passagemaker, getting the heating, air conditioning and water systems right-sized is critical from a comfort and energy-efficiency aspect.
 In the water system, this comes down to how much hot water do we need in a day. We don’t need that much for drinking and cooking. The difference is in life-style usage. Everyone’s comfort level will be different. The criteria for a live-aboard are different from a weekend cruiser or racing yacht. Living aboard, we should always have hot water when we need it; not waste water; and conserve energy.