Increasing solar gains by using hot water to heat dishwashers and washing machines
Document identifier: oai:dalea.du.se:2123
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10.1016/j.applthermaleng.2006.05.027Keyword: Engineering and Technology,
Civil Engineering,
Teknik och teknologier,
Samhällsbyggnadsteknik,
Dishwasher; Clothes washer; Washing machine; Domestic appliances; Solar heating system; Solar combisystem; Solar hot water system; SDHW; System design.Publication year: 2007Relevant Sustainable Development Goals (SDGs):
The SDG label(s) above have been assigned by OSDG.aiAbstract: 70 to 90% of the electric energy used by dishwashers and washing machines heats the water, the crockery, the laundry and the machine and could just as well be replaced by heating energy from solar collectors, district heating or a boiler. A dishwasher and a washing machine equipped with a heat exchanger and heated by a hot water circulation circuit instead of electricity (heat-fed machines) have been simulated together with solar heating systems for single-family houses in two different climates (Stockholm, Sweden and Miami, USA). The simulations show that a major part of the increased heat load due to heat-fed machines can be covered by solar heat both in hot and cold climates if the collector area is compensated for the larger heat load to give the same marginal contribution. Using ordinary machines connected to the hot water pipe (hot water-fed machines) and using only cold water for the rinses in the washing machine gives almost the same solar contribution; however considerably lower electrical energy savings are achieved. The simulations also indicate that improvements in the system design of a combisystem (increased stratification in the store) are more advantageous if heat-fed machines are connected to the store. Thus, using heat-fed machines also encourages the use of more advanced solar combisystems.
Authors
Tomas Persson
Högskolan Dalarna; Miljöteknik
Other publications
>>
Mats Rönnelid
Högskolan Dalarna; Miljöteknik
Other publications
>>
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header:
identifier: oai:dalea.du.se:2123
datestamp: 2021-04-15T13:01:38Z
setSpec: SwePub-du
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recordInfo:
recordContentSource: du
recordCreationDate: 2006-05-23
identifier:
http://urn.kb.se/resolve?urn=urn:nbn:se:du-2123
10.1016/j.applthermaleng.2006.05.027
titleInfo:
@attributes:
lang: eng
title: Increasing solar gains by using hot water to heat dishwashers and washing machines
abstract: 70 to 90% of the electric energy used by dishwashers and washing machines heats the water the crockery the laundry and the machine and could just as well be replaced by heating energy from solar collectors district heating or a boiler. A dishwasher and a washing machine equipped with a heat exchanger and heated by a hot water circulation circuit instead of electricity (heat-fed machines) have been simulated together with solar heating systems for single-family houses in two different climates (Stockholm Sweden and Miami USA). The simulations show that a major part of the increased heat load due to heat-fed machines can be covered by solar heat both in hot and cold climates if the collector area is compensated for the larger heat load to give the same marginal contribution. Using ordinary machines connected to the hot water pipe (hot water-fed machines) and using only cold water for the rinses in the washing machine gives almost the same solar contribution; however considerably lower electrical energy savings are achieved. The simulations also indicate that improvements in the system design of a combisystem (increased stratification in the store) are more advantageous if heat-fed machines are connected to the store. Thus using heat-fed machines also encourages the use of more advanced solar combisystems.
subject:
@attributes:
lang: eng
authority: uka.se
topic:
Engineering and Technology
Civil Engineering
@attributes:
lang: swe
authority: uka.se
topic:
Teknik och teknologier
Samhällsbyggnadsteknik
@attributes:
lang: eng
topic: Dishwasher; Clothes washer; Washing machine; Domestic appliances; Solar heating system; Solar combisystem; Solar hot water system; SDHW; System design.
language:
languageTerm: eng
genre:
publication/journal-article
ref
note:
Published
2
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type: personal
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Persson
Tomas
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roleTerm: aut
affiliation:
Högskolan Dalarna
Miljöteknik
nameIdentifier: tpe
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type: personal
authority: du
namePart:
Rönnelid
Mats
role:
roleTerm: aut
affiliation:
Högskolan Dalarna
Miljöteknik
nameIdentifier: mrd
originInfo:
dateIssued: 2007
publisher: Elsevier
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type: host
titleInfo:
title: Applied Thermal Engineering
identifier:
1359-4311
1873-5606
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detail:
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type: volume
number: 27
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type: issue
number: 2-3
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start: 646
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