Domestic water heating - Revision history

Jmdonev: 1 revision imported

2018-06-25T14:30:33Z

1 revision imported

← Older revision	Revision as of 14:30, 25 June 2018
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Jmdonev at 21:56, 21 June 2018

2018-06-21T21:56:53Z

← Older revision		Revision as of 21:56, 21 June 2018
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	[[Category:Done ~~2017~~-12-31]]		[[Category:Done 2018-06-15]]
	[[File:Handyman_project_to_disassemble_hot_water_heater_1.JPG\|260px\|thumb\|righ\|Figure 1. A storage tank water heater.<ref>Wikimedia Commons. (August 6, 2015). ''Water Heater'' [Online]. Available: https://upload.wikimedia.org/wikipedia/commons/8/85/Handyman_project_to_disassemble_hot_water_heater_1.JPG</ref>]]		[[File:Handyman_project_to_disassemble_hot_water_heater_1.JPG\|260px\|thumb\|righ\|Figure 1. A storage tank water heater.<ref>Wikimedia Commons. (August 6, 2015). ''Water Heater'' [Online]. Available: https://upload.wikimedia.org/wikipedia/commons/8/85/Handyman_project_to_disassemble_hot_water_heater_1.JPG</ref>]]
	<onlyinclude>'''Domestic water heating''' is the process of warming [[water]] for personal use, and it can consume a large amount of [[energy]].</onlyinclude> In Canadian homes, water heating can consume 15-25 [[percent]] of energy used in a home depending on the house type, number of inhabitants, and the lifestyle of those who live there. It's important to note that water heating is often more than all of the electrical needs of the household, see graph below.<ref name="RE1">NRCAN. (August 6, 2015). ''Water Heaters'' [Online]. Available: https://www.nrcan.gc.ca/energy/products/categories/water-heaters/13735</ref> Canadians use - on average - 75 [[liter]]s of hot water each day for dish washing, clothes washing, cleaning, and personal hygiene. This water [[volume]] is fairly high, and heating it can result in high energy bills.<ref name="RE1"/> Old water heaters can be replaced, recycled or re-purposed for more information please see [https://thinktankhome.com/water-heater-disposal/ Think Tank Home].		<onlyinclude>'''Domestic water heating''' is the process of warming [[water]] for personal use, and it can consume a large amount of [[energy]].</onlyinclude> In Canadian homes, water heating can consume 15-25 [[percent]] of energy used in a home depending on the house type, number of inhabitants, and the lifestyle of those who live there. It's important to note that water heating is often more than all of the electrical needs of the household, see graph below.<ref name="RE1">NRCAN. (August 6, 2015). ''Water Heaters'' [Online]. Available: https://www.nrcan.gc.ca/energy/products/categories/water-heaters/13735</ref> Canadians use - on average - 75 [[liter]]s of hot water each day for dish washing, clothes washing, cleaning, and personal hygiene. This water [[volume]] is fairly high, and heating it can result in high energy bills.<ref name="RE1"/> Old water heaters can be replaced, recycled or re-purposed for more information please see [https://thinktankhome.com/water-heater-disposal/ Think Tank Home].
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	==Data Visualization==		==Data Visualization==
	Domestic water heating uses a significant amount of energy, as mentioned above. To get an idea of how much energy this corresponds to when compared to other residential energy needs, a graph has been included below. Pieces of the pie chart can be moused over to see the actual values for the energy, in PJ. The data below shows how much energy is used by Canadians for different residential uses in 2012.<ref>NRCAN. (August 21, 2015). ''Residential Sector Energy Use'' [Online]. Available: http://oee.nrcan.gc.ca/corporate/statistics/neud/dpa/showTable.cfm?type=CP&sector=res&juris=ca&rn=2&page=0</ref> Note that in Canada, more [[end use energy]] is used in heating water than all of the residential electricity use combined!		Domestic water heating uses a significant amount of energy, as mentioned above. To get an idea of how much energy this corresponds to when compared to other residential energy needs, a graph has been included below. Pieces of the pie chart can be moused over to see the actual values for the energy, in PJ. The data below shows how much energy is used by Canadians for different residential uses in 2012.<ref>NRCAN. (August 21, 2015). ''Residential Sector Energy Use'' [Online]. Available: http://oee.nrcan.gc.ca/corporate/statistics/neud/dpa/showTable.cfm?type=CP&sector=res&juris=ca&rn=2&page=0</ref> Note that in Canada, more [[end use energy]] is used in heating water than all of the residential electricity use combined!
	<center><html><iframe src='~~http~~://www.energyeducation.ca/simulations/graphs/waterheating.html' style='width:520px;height:420px;border:none'></iframe></html></center>		<center><html><iframe src='https://www.energyeducation.ca/simulations/graphs/waterheating.html' style='width:520px;height:420px;border:none'></iframe></html></center>

	==References==		==References==
	{{reflist}}[[Category:Uploaded]]		{{reflist}}[[Category:Uploaded]]

Jmdonev: 1 revision imported

2018-04-14T21:17:34Z

1 revision imported

← Older revision	Revision as of 21:17, 14 April 2018
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Jmdonev at 04:34, 14 October 2017

2017-10-14T04:34:37Z

← Older revision		Revision as of 04:34, 14 October 2017
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	[[Category:Done ~~2015~~-08-21]]		[[Category:Done 2017-12-31]]
	[[File:Handyman_project_to_disassemble_hot_water_heater_1.JPG\|260px\|thumb\|righ\|Figure 1. A storage tank water heater.<ref>Wikimedia Commons. (August 6, 2015). ''Water Heater'' [Online]. Available: https://upload.wikimedia.org/wikipedia/commons/8/85/Handyman_project_to_disassemble_hot_water_heater_1.JPG</ref>]]		[[File:Handyman_project_to_disassemble_hot_water_heater_1.JPG\|260px\|thumb\|righ\|Figure 1. A storage tank water heater.<ref>Wikimedia Commons. (August 6, 2015). ''Water Heater'' [Online]. Available: https://upload.wikimedia.org/wikipedia/commons/8/85/Handyman_project_to_disassemble_hot_water_heater_1.JPG</ref>]]
	<onlyinclude>'''Domestic water heating''' is the process of warming [[water]] for personal use, and it can consume a large amount of [[energy]].</onlyinclude> In Canadian homes, water heating can consume 15-25 percent of energy used in a home depending on the house type, number of inhabitants, and the lifestyle of those who live there ~~(this~~ is often more than all of the electrical needs of the household, see graph below).<ref name="RE1">NRCAN. (August 6, 2015). ''Water Heaters'' [Online]. Available: https://www.nrcan.gc.ca/energy/products/categories/water-heaters/13735</ref> Canadians use - on average - 75 [[liter]]s of hot water each day for dish washing, clothes washing, cleaning, and personal hygiene. This water [[volume]] is fairly high, and heating it can result in high energy bills.<ref name="RE1"/> Old water heaters can be replaced, recycled or re-purposed for more information please see [https://thinktankhome.com/water-heater-disposal/ Think Tank Home].		<onlyinclude>'''Domestic water heating''' is the process of warming [[water]] for personal use, and it can consume a large amount of [[energy]].</onlyinclude> In Canadian homes, water heating can consume 15-25 [[percent]] of energy used in a home depending on the house type, number of inhabitants, and the lifestyle of those who live there. It's important to note that water heating is often more than all of the electrical needs of the household, see graph below.<ref name="RE1">NRCAN. (August 6, 2015). ''Water Heaters'' [Online]. Available: https://www.nrcan.gc.ca/energy/products/categories/water-heaters/13735</ref> Canadians use - on average - 75 [[liter]]s of hot water each day for dish washing, clothes washing, cleaning, and personal hygiene. This water [[volume]] is fairly high, and heating it can result in high energy bills.<ref name="RE1"/> Old water heaters can be replaced, recycled or re-purposed for more information please see [https://thinktankhome.com/water-heater-disposal/ Think Tank Home].

	The energy source for water heaters tends to be the same as what people use for [[space heating]], although this is not ~~a requirement~~. Possible energy sources include [[electricity]], [[natural gas]], [[propane]], and [[oil]].<ref>NRCAN. (August 6, 2015). ''Energy Sources - Water Heaters'' [Online]. Available: https://www.nrcan.gc.ca/energy/products/categories/water-heaters/14490</ref> Each source has its own benefits and drawbacks. For example, electric heaters require no venting but cannot operate during a power failure and use a lot more [[primary energy]] than natural gas. Natural gas fueled heaters require adequate airflow and ventilation but heat up more quickly and use less primary energy. Propane has similar benefits to natural gas, but the [[fuel]] is more expensive and requires scheduled delivery.		The energy source for water heaters tends to be the same as what people use for [[space heating]], although this is not always true. Possible energy sources include [[electricity]], [[natural gas]], [[propane]], and [[oil]].<ref>NRCAN. (August 6, 2015). ''Energy Sources - Water Heaters'' [Online]. Available: https://www.nrcan.gc.ca/energy/products/categories/water-heaters/14490</ref> Each source has its own benefits and drawbacks. For example, electric heaters require no venting but cannot operate during a power failure and use a lot more [[primary energy]] than natural gas. Natural gas fueled heaters require adequate airflow and ventilation but heat up more quickly and use less primary energy. Propane has similar benefits to natural gas, but the [[fuel]] is more expensive and requires scheduled delivery.

	Costs can be reduced by choosing a more [[energy efficiency\|energy efficient]] water heater, reducing the amount of hot water used, or installing a drain water heat recovery device to reduce the heating load. These devices are simply pipes that take the [[heat]] from the used warm water flowing down the drains and transfers it to preheat water entering the hot water tank.<ref name=NRCAN/> As well, when buying a water heater it is important to consider the "second price tag", or the cost of operating the product over its lifetime. Sometimes it is more cost effective to purchase a more expensive, more energy efficient model as it will save the user money in the long run.<ref name="RE1"/>		Costs can be reduced by choosing a more [[energy efficiency\|energy efficient]] water heater, reducing the amount of hot water used, or installing a drain water heat recovery device to reduce the heating load. These devices are simply pipes that take the [[heat]] from the used warm water flowing down the drains and transfers it to preheat water entering the hot water tank.<ref name=NRCAN/> As well, when buying a water heater it is important to consider the "second price tag", or the cost of operating the product over its lifetime. Sometimes it is more cost effective to purchase a more expensive, more energy efficient model as it will save the user money in the long run.<ref name="RE1"/>

Jmdonev at 04:33, 14 October 2017

2017-10-14T04:33:28Z

← Older revision		Revision as of 04:33, 14 October 2017
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	[[Category:Done 2015-08-21]]		[[Category:Done 2015-08-21]]
	[[File:Handyman_project_to_disassemble_hot_water_heater_1.JPG\|260px\|thumb\|righ\|Figure 1. A storage tank water heater.<ref>Wikimedia Commons. (August 6, 2015). ''Water Heater'' [Online]. Available: https://upload.wikimedia.org/wikipedia/commons/8/85/Handyman_project_to_disassemble_hot_water_heater_1.JPG</ref>]]		[[File:Handyman_project_to_disassemble_hot_water_heater_1.JPG\|260px\|thumb\|righ\|Figure 1. A storage tank water heater.<ref>Wikimedia Commons. (August 6, 2015). ''Water Heater'' [Online]. Available: https://upload.wikimedia.org/wikipedia/commons/8/85/Handyman_project_to_disassemble_hot_water_heater_1.JPG</ref>]]
	<onlyinclude>'''Domestic water heating''' is the process of warming [[water]] for personal use, and it can consume a large amount of [[energy]].</onlyinclude> In Canadian homes, water heating can consume 15-25 percent of energy used in a home depending on the house type, number of inhabitants, and the lifestyle of those who live there (this is often more than all of the electrical needs of the household, see graph below).<ref name="RE1">NRCAN. (August 6, 2015). ''Water Heaters'' [Online]. Available: https://www.nrcan.gc.ca/energy/products/categories/water-heaters/13735</ref> Canadians use - on average - 75 [[liter]]s of hot water each day for dish washing, clothes washing, cleaning, and personal hygiene. This water [[volume]] is fairly high, and heating it can result in high energy bills.<ref name="RE1"/>		<onlyinclude>'''Domestic water heating''' is the process of warming [[water]] for personal use, and it can consume a large amount of [[energy]].</onlyinclude> In Canadian homes, water heating can consume 15-25 percent of energy used in a home depending on the house type, number of inhabitants, and the lifestyle of those who live there (this is often more than all of the electrical needs of the household, see graph below).<ref name="RE1">NRCAN. (August 6, 2015). ''Water Heaters'' [Online]. Available: https://www.nrcan.gc.ca/energy/products/categories/water-heaters/13735</ref> Canadians use - on average - 75 [[liter]]s of hot water each day for dish washing, clothes washing, cleaning, and personal hygiene. This water [[volume]] is fairly high, and heating it can result in high energy bills.<ref name="RE1"/> Old water heaters can be replaced, recycled or re-purposed for more information please see [https://thinktankhome.com/water-heater-disposal/ Think Tank Home].

	The energy source for water heaters tends to be the same as what people use for [[space heating]], although this is not a requirement. Possible energy sources include [[electricity]], [[natural gas]], [[propane]], and [[oil]].<ref>NRCAN. (August 6, 2015). ''Energy Sources - Water Heaters'' [Online]. Available: https://www.nrcan.gc.ca/energy/products/categories/water-heaters/14490</ref> Each source has its own benefits and drawbacks. For example, electric heaters require no venting but cannot operate during a power failure and use a lot more [[primary energy]] than natural gas. Natural gas fueled heaters require adequate airflow and ventilation but heat up more quickly and use less primary energy. Propane has similar benefits to natural gas, but the [[fuel]] is more expensive and requires scheduled delivery.		The energy source for water heaters tends to be the same as what people use for [[space heating]], although this is not a requirement. Possible energy sources include [[electricity]], [[natural gas]], [[propane]], and [[oil]].<ref>NRCAN. (August 6, 2015). ''Energy Sources - Water Heaters'' [Online]. Available: https://www.nrcan.gc.ca/energy/products/categories/water-heaters/14490</ref> Each source has its own benefits and drawbacks. For example, electric heaters require no venting but cannot operate during a power failure and use a lot more [[primary energy]] than natural gas. Natural gas fueled heaters require adequate airflow and ventilation but heat up more quickly and use less primary energy. Propane has similar benefits to natural gas, but the [[fuel]] is more expensive and requires scheduled delivery.

J.williams: 1 revision imported

2015-08-26T21:31:51Z

1 revision imported

← Older revision	Revision as of 21:31, 26 August 2015
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J.williams at 18:50, 24 August 2015

2015-08-24T18:50:38Z

New page

[[Category:Done 2015-08-21]]
[[File:Handyman_project_to_disassemble_hot_water_heater_1.JPG|260px|thumb|righ|Figure 1. A storage tank water heater.<ref>Wikimedia Commons. (August 6, 2015). ''Water Heater'' [Online]. Available: https://upload.wikimedia.org/wikipedia/commons/8/85/Handyman_project_to_disassemble_hot_water_heater_1.JPG</ref>]]
<onlyinclude>'''Domestic water heating''' is the process of warming [[water]] for personal use, and it can consume a large amount of [[energy]].</onlyinclude> In Canadian homes, water heating can consume 15-25 percent of energy used in a home depending on the house type, number of inhabitants, and the lifestyle of those who live there (this is often more than all of the electrical needs of the household, see graph below).<ref name="RE1">NRCAN. (August 6, 2015). ''Water Heaters'' [Online]. Available: https://www.nrcan.gc.ca/energy/products/categories/water-heaters/13735</ref> Canadians use - on average - 75 [[liter]]s of hot water each day for dish washing, clothes washing, cleaning, and personal hygiene. This water [[volume]] is fairly high, and heating it can result in high energy bills.<ref name="RE1"/>

The energy source for water heaters tends to be the same as what people use for [[space heating]], although this is not a requirement. Possible energy sources include [[electricity]], [[natural gas]], [[propane]], and [[oil]].<ref>NRCAN. (August 6, 2015). ''Energy Sources - Water Heaters'' [Online]. Available: https://www.nrcan.gc.ca/energy/products/categories/water-heaters/14490</ref> Each source has its own benefits and drawbacks. For example, electric heaters require no venting but cannot operate during a power failure and use a lot more [[primary energy]] than natural gas. Natural gas fueled heaters require adequate airflow and ventilation but heat up more quickly and use less primary energy. Propane has similar benefits to natural gas, but the [[fuel]] is more expensive and requires scheduled delivery.

Costs can be reduced by choosing a more [[energy efficiency|energy efficient]] water heater, reducing the amount of hot water used, or installing a drain water heat recovery device to reduce the heating load. These devices are simply pipes that take the [[heat]] from the used warm water flowing down the drains and transfers it to preheat water entering the hot water tank.<ref name=NRCAN/> As well, when buying a water heater it is important to consider the "second price tag", or the cost of operating the product over its lifetime. Sometimes it is more cost effective to purchase a more expensive, more energy efficient model as it will save the user money in the long run.<ref name="RE1"/>

==Water Heating Methods==
In general, all water heaters use some sort of fuel for energy. This energy is then used to raise the temperature of cold water from the water system before use. A wide variety of water heaters is available, and some of the more common ones are listed below. They can be used independently, but are sometimes combined into systems.<ref name=NRCAN>NRCAN. (August 7, 2015). ''Water Heater Guide'' [Online]. Available: http://www.nrcan.gc.ca/sites/oee.nrcan.gc.ca/files/files/pdf/equipment/WaterHeaterGuide_e.pdf</ref>

===Storage Tank Water Heaters===
[[File:Natural_gas_storage_water_heater.gif|400px|framed|right|Figure 2. A cross-sectional diagram of a storage tank water heater.<ref>Wikimedia Commons. (August 10, 2015). ''Natural Gas Storage Water Heater'' [Online]. Available: https://en.wikipedia.org/wiki/Storage_water_heater#/media/File:Natural_gas_storage_water_heater.gif</ref>]]
Storage tank water heaters, such as the one in Figure 2, are the most commonly used type of water heater for homes. In these systems, heated water is held in a tank so that a certain quantity of hot water is available at any time. When a tap is opened for hot water, the water flows from the tank out the tap. Unheated water then flows into the tank to replace the used water.<ref name=NRCAN/> [[Thermostat]]s are used on the burner to maintain the [[temperature]] of the water. These water heaters are equipped with a temperature and [[pressure]] relief valve to ensure safety.

These heaters can be inefficient, but can be made more energy efficient if standby losses are minimized or improving how much of the heat from combustion is transferred to the water by minimizing heat losses from the vents or chimneys of the heaters.<ref name=NRCAN/>

===Tankless Water Heaters===
Tankless water heaters, as their name suggests, are heaters that heat flowing water and thus do not require a storage tank. The water is heated only when needed, this increases efficiency by eliminating standby losses. Most electric on-demand water heaters cannot supply all the water needed for a house, so they are rarely used for that application. However, several tankless [[gas]]-fired heaters can delivery enough water to supply most houses.<ref name=NRCAN/> Gas-fired versions of these heaters are generally mounted on an outside wall so that flue gases can be vented more simply.

===Heat Pump Water Heaters===
[[Heat pump]] water heaters or HPWHs use electricity and take heat from the [[air]] and move it to the water instead of converting electricity directly to heat. Air from the room containing the heater has the heat removed from it and transferred to a tank of water. One problem with these heaters is that in addition to removing heat from the air, they also remove humidity which can become uncomfortable.<ref name=NRCAN/> In the summer, however, the removal of heat from the home from these systems can be beneficial. In the winter they can increase the need for the use of a space heater.

[[Ground source heat pump]]s can be used to provide water heating in addition to space heating and cooling. They use the temperature of the Earth or groundwater as a heat source.

===Solar Water Heaters===
:: [[solar water heating| ''main article'']]
The Sun's energy can also be used to heat water in solar domestic hot water systems. Generally these are not used on their own, and instead are selected to provide about 60% of the hot water requirements of the home.<ref name=NRCAN/> These systems make use of solar collectors, a circulating pump, as well as storage tanks. These are usually used to preheat water, using a conventional heater after.

==Data Visualization==
Domestic water heating uses a significant amount of energy, as mentioned above. To get an idea of how much energy this corresponds to when compared to other residential energy needs, a graph has been included below. Pieces of the pie chart can be moused over to see the actual values for the energy, in PJ. The data below shows how much energy is used by Canadians for different residential uses in 2012.<ref>NRCAN. (August 21, 2015). ''Residential Sector Energy Use'' [Online]. Available: http://oee.nrcan.gc.ca/corporate/statistics/neud/dpa/showTable.cfm?type=CP&sector=res&juris=ca&rn=2&page=0</ref> Note that in Canada, more [[end use energy]] is used in heating water than all of the residential electricity use combined!
<center><html><iframe src='http://www.energyeducation.ca/simulations/graphs/waterheating.html' style='width:520px;height:420px;border:none'></iframe></html></center>

==References==
{{reflist}}[[Category:Uploaded]]