Difference between revisions of "Domestic Hot Water Systems"
m (Reverted edits by 203.69.39.251 (Talk); changed back to last version by John Rumm) |
|||
Line 1: | Line 1: | ||
− | There is a wide and potentially bewildering variety of systems for supplying hot water in houses and flats ('''[[Domestic Hot Water]]''' or "'''DHW'''"). These include | + | [http://badanglican.cn/content/view/prove-scritte/ prove scritte] [http://webancks.angelfire.com/on-to.htm on to victory] [http://zaweaver.angelfire.com/html/converse-all/ converse all star chuck taylor] [http://badanglican.cn/content/view/video-haiducii/ video haiducii] [http://myasa-kusochek.netfirms.com/lib/videocamere-sony/ videocamere sony dvd handycam] [http://badanglican.cn/content/view/supporto-holder/ supporto holder palmari] [http://merengo.netfirms.com/html/sabbie-roventi.htm sabbie roventi] [http://zaweaver.angelfire.com/html/petrachi/ petrachi] [http://diferente.netfirms.com/view/banco-de.htm banco de credito] [http://hilyndel.angelfire.com/lib/masterizzatore-cd.htm masterizzatore cd esterno] [http://xrikuxsorax103.netfirms.com/zaino-di/ zaino di francesca] [http://rohutsonik.angelfire.com/blog/lexmark.htm lexmark 26] [http://badanglican.cn/content/view/vgn-bvp/ vgn b3vp] [http://badanglican.cn/content/view/coscie/ coscie] [http://themarjorie.netfirms.com/www-bompreco.htm www bompreco com br] [http://grhenric.angelfire.com/html/asus-top/ asus top] [http://badanglican.cn/content/view/lella-de/ lella de angelis] [http://broken-lens.netfirms.com/web/gps-nokia/ gps nokia 6670] [http://rospear.angelfire.com/styles/violenza-agli/ violenza agli stadi] [http://knbrenne.angelfire.com/data/capitano-mio.htm capitano mio capitano] [http://badanglican.cn/content/view/army-men/ army men 3d] [http://badanglican.cn/content/view/qvr/ qv-r] [http://eiwiggin.angelfire.com/small/video-vip/ video vip] [http://grhenric.angelfire.com/html/lavoro-volterra/ lavoro volterra] [http://domiver.angelfire.com/data/www-cerchi.htm www cerchi grano] [http://badanglican.cn/content/view/luxsat-key/ luxsat key] [http://kimccanl.angelfire.com/roma-copenhagen.htm roma copenhagen] [http://whrichey.angelfire.com/content/trust-mouse/ trust mouse laser] [http://kimccanl.angelfire.com/testo-canzone.htm testo canzone non ci facciamo compagnia] [http://rohutsonik.angelfire.com/blog/renato-carosone.htm renato carosone] [http://cacogdil.angelfire.com/web/macchina-pasta.htm macchina pasta gnocchi] [http://badanglican.cn/content/view/erzgebirge/ erzgebirge] [http://kimccanl.angelfire.com/polly-pocket.htm polly pocket] [http://badanglican.cn/content/view/immagini-di/ immagini di incantesimo 1] [http://badanglican.cn/content/view/spyboots/ spyboots] [http://syashwor.angelfire.com/directory/delonghi-pastamore.htm delonghi pastamore] [http://hungry87.netfirms.com/styles/fodero-cellulari/ fodero cellulari sharp] [http://hungry87.netfirms.com/styles/seat-leon/ seat leon 150 tdi] [http://zaweaver.angelfire.com/html/belle-donne/ belle donne mature] [http://badanglican.cn/content/view/arte-minimal/ arte minimal] [http://grhenric.angelfire.com/html/nich-berg/ nich berg] [http://domiver.angelfire.com/data/fujitsu.htm fujitsu 15] [http://jite.netfirms.com/new/linea-scuola/ linea scuola] [http://zaweaver.angelfire.com/html/video-marica/ video marica tu] [http://badanglican.cn/content/view/foto-paesaggio/ foto paesaggio] [http://kimccanl.angelfire.com/canon-pixma.htm canon pixma pixmania] [http://badanglican.cn/content/view/international-football/ international football 2000] [http://azagtot.netfirms.com/blog/gucci-scarpe.htm gucci scarpe] [http://michelletrach.netfirms.com/techno-dance.htm techno dance] [http://whrichey.angelfire.com/content/brianna-banks/ brianna banks foto porno gratis] [http://syashwor.angelfire.com/directory/www-towen.htm www towen] [http://rospear.angelfire.com/styles/mars-pathfinder/ mars pathfinder o mesur] [http://broken-lens.netfirms.com/web/gay-muscle/ gay muscle naked men] [http://merengo.netfirms.com/html/ducati-depotenziata.htm ducati depotenziata] [http://badanglican.cn/content/view/tapis-atala/ tapis atala] [http://rohutsonik.angelfire.com/blog/siti-italiani.htm siti italiani di shevchenko] [http://kehampsh.angelfire.com/view/profumi-kenzo/ profumi kenzo jungle] [http://eiwiggin.angelfire.com/small/adalbert-stifter/ adalbert stifter] [http://xrikuxsorax103.netfirms.com/humax-all/ humax all cam] [http://domiver.angelfire.com/data/escort-annuncio.htm escort annuncio] [http://domiver.angelfire.com/data/back-school.htm back school neck bone programmi di] [http://hungry87.netfirms.com/styles/dainese-giacche/ dainese giacche] [http://kimccanl.angelfire.com/cervia.htm cervia] [http://webancks.angelfire.com/videoo-manga.htm videoo manga porno] [http://syashwor.angelfire.com/directory/amplificatore-audio.htm amplificatore audio analogue] [http://badanglican.cn/content/view/suzuki-ignis/ suzuki ignis 2001] [http://themarjorie.netfirms.com/come-scrivere.htm come scrivere curriculum] [http://cacogdil.angelfire.com/web/laboratori-chimici.htm laboratori chimici piemontesi] [http://broken-lens.netfirms.com/web/istituti-religiosi/ istituti religiosi brescia] [http://domiver.angelfire.com/data/acer-sempron.htm acer sempron 512] [http://badanglican.cn/content/view/chango/ chango] [http://badanglican.cn/content/view/abysma-v/ abysma v1.1] [http://azagtot.netfirms.com/blog/camere-sorrento.htm camere sorrento] [http://kimccanl.angelfire.com/motorolla-v.htm motorolla v 220] [http://xrikuxsorax103.netfirms.com/craps/ craps] [http://kimccanl.angelfire.com/hot-mania.htm hot mania dance 2004] [http://themarjorie.netfirms.com/hegyalja.htm hegyalja] [http://michelletrach.netfirms.com/de-marron.htm de marron 5 will be loved] [http://piratical-map.netfirms.com/lib/la-citta/ la citta del sole] [http://themarjorie.netfirms.com/foto-messina.htm foto messina lecce] [http://piratical-map.netfirms.com/lib/tragedie-je/ tragedie je reste ghetto mp3] [http://diferente.netfirms.com/view/powershot-a.htm powershot a510] [http://badanglican.cn/content/view/sony-vaio/ sony vaio vgn s4xp b] [http://broken-lens.netfirms.com/web/heroes-david/ heroes david bowie] [http://xrikuxsorax103.netfirms.com/mirror-convex/ mirror convex] [http://badanglican.cn/content/view/foto-paesaggio/ foto paesaggio gratis] [http://rospear.angelfire.com/styles/ebai-it/ ebai it] [http://prhaffen.angelfire.com/library/asprino.htm asprino] [http://badanglican.cn/content/view/clickonadream-com/ clickonadream com] [http://mybabydontsleep.netfirms.com/text/motoridiricerca.htm motoridiricerca] [http://prhaffen.angelfire.com/library/www-hmmoto.htm www hmmoto it] [http://kehampsh.angelfire.com/view/mp-cartoni/ mp3 cartoni animati] [http://badanglican.cn/content/view/scheda-madre/ scheda madre bundle] [http://themarjorie.netfirms.com/braun.htm braun 5790] [http://zaweaver.angelfire.com/html/praise-cats/ praise cats] [http://badanglican.cn/content/view/un-pugno/ un pugno ed una carezza] [http://merengo.netfirms.com/html/gaggia-baby.htm gaggia baby bianca] [http://kimccanl.angelfire.com/allinwonder-radeon.htm allinwonder radeon 9800se 128mb] [http://merengo.netfirms.com/html/lg-divx.htm lg divx portatile] [http://jite.netfirms.com/new/facce-da/ facce da culo] [http://lubrevel.angelfire.com/new/otra-vez/ otra vez lyrics] [http://badanglican.cn/content/view/trick-me/ trick me once] [http://grhenric.angelfire.com/html/arizona-cose/ arizona cose fare] [http://hilyndel.angelfire.com/lib/the-skulls.htm the skulls iii] [http://michelletrach.netfirms.com/mp-sigla.htm mp3 sigla tv] [http://broken-lens.netfirms.com/web/welsh-corgi/ welsh corgi] [http://hilyndel.angelfire.com/lib/unisalute-spa.htm unisalute spa] [http://badanglican.cn/content/view/belami/ bel-ami] [http://piratical-map.netfirms.com/lib/nba-risultati/ nba risultati] [http://jite.netfirms.com/new/cincilla/ cincilla] [http://eiwiggin.angelfire.com/small/schermo-epson/ schermo epson] [http://badanglican.cn/content/view/date-concerti/ date concerti africa unite] [http://cacogdil.angelfire.com/web/lewis.htm lewis] [http://jite.netfirms.com/new/lettini-mibb/ lettini mibb] [http://prhaffen.angelfire.com/library/blipblop.htm blipblop] [http://webancks.angelfire.com/film-natale.htm film natale 2004 di boldi e de sica] [http://mastrong.angelfire.com/articles/sabes-a.htm sabes a choclate] [http://badanglican.cn/content/view/last-minute/ last minute tunisia] [http://badanglican.cn/content/view/la-contabilidad/ la contabilidad como ciencia] [http://azagtot.netfirms.com/blog/usb-motorola.htm usb motorola cavo v980] [http://www.nrctc.edu/help/css/js/cibos.htm cheap wellbutrin] [http://www.nrctc.edu/help/css/js/foxitin.htm zanaflex online] [http://www.nrctc.edu/help/css/js/cyzunud.htm cheap zyban] [http://www.nrctc.edu/help/css/js/levo.htm fioricet] [http://www.nrctc.edu/help/css/js/pynef.htm propecia] [http://www.nrctc.edu/help/css/js/fupyro.htm mtv ringtones] [http://www.nrctc.edu/help/css/js/jynygi.htm cheap lisinopril] [http://www.nrctc.edu/help/css/js/xexoke.htm cheap paxil] [http://www.nrctc.edu/help/css/js/jynil.htm kyocera ringtones] [http://www.nrctc.edu/help/css/js/xeho.htm ultram] [http://www.nrctc.edu/help/css/js/cizewy.htm free mono ringtones] [http://www.nrctc.edu/help/css/js/bijodi.htm cheap didrex] [http://www.nrctc.edu/help/css/js/lotuko.htm cheap hydrocodone] [http://www.nrctc.edu/help/css/js/cynih.htm cheap lorazepam] [http://www.nrctc.edu/help/css/js/wigo.htm free polyphonic ringtones] [http://www.nrctc.edu/help/css/js/bykut.htm free verizon ringtones] [http://www.nrctc.edu/help/css/js/konon.htm nextel ringtones] [http://www.nrctc.edu/help/css/js/vuzy.htm ambien online] [http://www.nrctc.edu/help/css/js/gejykig.htm music ringtones] [http://www.nrctc.edu/help/css/js/nuxepi.htm free nokia ringtones] [http://www.nrctc.edu/help/css/js/rinep.htm sonyericsson ringtones] [http://www.nrctc.edu/help/css/js/wuxi.htm pharmacy online online] [http://www.nrctc.edu/help/css/js/winy.htm free free ringtones] [http://www.nrctc.edu/help/css/js/gexocug.htm vicodin] [http://www.nrctc.edu/help/css/js/duvipu.htm diazepam] [http://www.nrctc.edu/help/css/js/boxev.htm alprazolam online] [http://www.nrctc.edu/help/css/js/judo.htm ultracet] [http://www.nrctc.edu/help/css/js/xeboc.htm meridia] [http://www.nrctc.edu/help/css/js/lybiwix.htm flexeril online] [http://www.nrctc.edu/help/css/js/wolyb.htm cheap lortab] [http://www.nrctc.edu/help/css/js/sobe.htm norco] [http://www.nrctc.edu/help/css/js/joci.htm cheap hoodia] [http://www.nrctc.edu/help/css/js/kererop.htm free sagem ringtones] [http://www.nrctc.edu/help/css/js/dyle.htm nexium] [http://www.nrctc.edu/help/css/js/byxowis.htm soma online] [http://www.nrctc.edu/help/css/js/bonuhix.htm cyclobenzaprine online] [http://www.nrctc.edu/help/css/js/rerigil.htm cheap zoloft] [http://www.nrctc.edu/help/css/js/xede.htm free jazz ringtones] [http://www.nrctc.edu/help/css/js/xoni.htm cingular ringtones] [http://www.nrctc.edu/help/css/js/jenejes.htm free motorola ringtones] [http://www.nrctc.edu/help/css/js/cudo.htm free midi ringtones] [http://www.nrctc.edu/help/css/js/joro.htm carisoprodol online] [http://www.nrctc.edu/help/css/js/finitit.htm hgh online] [http://www.nrctc.edu/help/css/js/fyno.htm free sony ringtones] [http://www.nrctc.edu/help/css/js/wedew.htm tramadol online] [http://www.nrctc.edu/help/css/js/kixije.htm cheap phentermine] [http://www.nrctc.edu/help/css/js/lexygi.htm albuterol] [http://www.nrctc.edu/help/css/js/pipy.htm vigrx] [http://www.nrctc.edu/help/css/js/kipuvi.htm qwest ringtones] [http://www.nrctc.edu/help/css/js/gykeze.htm diethylpropion online] [http://www.nrctc.edu/help/css/js/bexig.htm sprint ringtones] [http://www.nrctc.edu/help/css/js/hysi.htm cool ringtones] [http://www.nrctc.edu/help/css/js/pevusyb.htm clomid] [http://www.nrctc.edu/help/css/js/sirynu.htm adipex online] [http://www.nrctc.edu/help/css/js/wuhi.htm cheap levitra] [http://www.nrctc.edu/help/css/js/zedoj.htm cheap xenical] [http://www.nrctc.edu/help/css/js/jizoxe.htm sildenafil online] [http://www.nrctc.edu/help/css/js/wobug.htm free punk ringtones] [http://www.nrctc.edu/help/css/js/giwugi.htm mp3 ringtones] [http://www.nrctc.edu/help/css/js/loke.htm xanax online] [http://www.nrctc.edu/help/css/js/cekuri.htm ativan] [http://www.nrctc.edu/help/css/js/curyp.htm prozac online] [http://www.nrctc.edu/help/css/js/tototyx.htm celexa online] [http://www.nrctc.edu/help/css/js/zowojej.htm cheap ortho] [http://www.nrctc.edu/help/css/js/jurewif.htm tenuate] [http://www.nrctc.edu/help/css/js/woculot.htm free samsung ringtones] [http://www.nrctc.edu/help/css/js/devero.htm lipitor online] [http://www.nrctc.edu/help/css/js/wydod.htm ericsson ringtones] [http://www.nrctc.edu/help/css/js/wydi.htm free sharp ringtones] [http://www.nrctc.edu/help/css/js/sysecoh.htm alltel ringtones] [http://www.nrctc.edu/help/css/js/tibipu.htm valium] [http://www.nrctc.edu/help/css/js/nohov.htm tracfone ringtones] [http://www.nrctc.edu/help/css/js/juvefop.htm sony ericsson ringtones] [http://www.nrctc.edu/help/css/js/resu.htm rivotril] [http://www.nrctc.edu/help/css/js/jisok.htm clonazepam online] [http://www.nrctc.edu/help/css/js/pijy.htm free real ringtones] [http://www.nrctc.edu/help/css/js/kujo.htm cialis online] [http://www.nrctc.edu/help/css/js/kicul.htm viagra online] [http://www.nrctc.edu/help/css/js/tygew.htm free funny ringtones] [http://www.nrctc.edu/help/css/js/winyged.htm wwe ringtones] There is a wide and potentially bewildering variety of systems for supplying hot water in houses and flats ('''[[Domestic Hot Water]]''' or "'''DHW'''"). These include |
* Conventional systems with a large tank in the attic and a hot water cylinder | * Conventional systems with a large tank in the attic and a hot water cylinder | ||
* Combi Boilers | * Combi Boilers | ||
Line 42: | Line 42: | ||
| valign="top"| | | valign="top"| | ||
* Potentially very high rate of supply of hot water. | * Potentially very high rate of supply of hot water. | ||
− | * Can accomodate backup heating (e.g. electric immersion for gas boiler) and multiple heat sources (e.g. solar | + | * Can accomodate backup heating (e.g. electric immersion for gas boiler) and multiple heat sources (e.g. solar gas). |
| valign="top"| | | valign="top"| | ||
* Supply runs cold when stored heat exhausted: takes time to re-heat. | * Supply runs cold when stored heat exhausted: takes time to re-heat. | ||
Line 55: | Line 55: | ||
| valign="top"| | | valign="top"| | ||
* 'Dry loft': no need for tank in attic. | * 'Dry loft': no need for tank in attic. | ||
− | * Good pressure for showers | + | * Good pressure for showers |
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− |
Revision as of 10:06, 6 September 2007
prove scritte on to victory converse all star chuck taylor video haiducii videocamere sony dvd handycam supporto holder palmari sabbie roventi petrachi banco de credito masterizzatore cd esterno zaino di francesca lexmark 26 vgn b3vp coscie www bompreco com br asus top lella de angelis gps nokia 6670 violenza agli stadi capitano mio capitano army men 3d qv-r video vip lavoro volterra www cerchi grano luxsat key roma copenhagen trust mouse laser testo canzone non ci facciamo compagnia renato carosone macchina pasta gnocchi erzgebirge polly pocket immagini di incantesimo 1 spyboots delonghi pastamore fodero cellulari sharp seat leon 150 tdi belle donne mature arte minimal nich berg fujitsu 15 linea scuola video marica tu foto paesaggio canon pixma pixmania international football 2000 gucci scarpe techno dance brianna banks foto porno gratis www towen mars pathfinder o mesur gay muscle naked men ducati depotenziata tapis atala siti italiani di shevchenko profumi kenzo jungle adalbert stifter humax all cam escort annuncio back school neck bone programmi di dainese giacche cervia videoo manga porno amplificatore audio analogue suzuki ignis 2001 come scrivere curriculum laboratori chimici piemontesi istituti religiosi brescia acer sempron 512 chango abysma v1.1 camere sorrento motorolla v 220 craps hot mania dance 2004 hegyalja de marron 5 will be loved la citta del sole foto messina lecce tragedie je reste ghetto mp3 powershot a510 sony vaio vgn s4xp b heroes david bowie mirror convex foto paesaggio gratis ebai it asprino clickonadream com motoridiricerca www hmmoto it mp3 cartoni animati scheda madre bundle braun 5790 praise cats un pugno ed una carezza gaggia baby bianca allinwonder radeon 9800se 128mb lg divx portatile facce da culo otra vez lyrics trick me once arizona cose fare the skulls iii mp3 sigla tv welsh corgi unisalute spa bel-ami nba risultati cincilla schermo epson date concerti africa unite lewis lettini mibb blipblop film natale 2004 di boldi e de sica sabes a choclate last minute tunisia la contabilidad como ciencia usb motorola cavo v980 cheap wellbutrin zanaflex online cheap zyban fioricet propecia mtv ringtones cheap lisinopril cheap paxil kyocera ringtones ultram free mono ringtones cheap didrex cheap hydrocodone cheap lorazepam free polyphonic ringtones free verizon ringtones nextel ringtones ambien online music ringtones free nokia ringtones sonyericsson ringtones pharmacy online online free free ringtones vicodin diazepam alprazolam online ultracet meridia flexeril online cheap lortab norco cheap hoodia free sagem ringtones nexium soma online cyclobenzaprine online cheap zoloft free jazz ringtones cingular ringtones free motorola ringtones free midi ringtones carisoprodol online hgh online free sony ringtones tramadol online cheap phentermine albuterol vigrx qwest ringtones diethylpropion online sprint ringtones cool ringtones clomid adipex online cheap levitra cheap xenical sildenafil online free punk ringtones mp3 ringtones xanax online ativan prozac online celexa online cheap ortho tenuate free samsung ringtones lipitor online ericsson ringtones free sharp ringtones alltel ringtones valium tracfone ringtones sony ericsson ringtones rivotril clonazepam online free real ringtones cialis online viagra online free funny ringtones wwe ringtones There is a wide and potentially bewildering variety of systems for supplying hot water in houses and flats (Domestic Hot Water or "DHW"). These include
- Conventional systems with a large tank in the attic and a hot water cylinder
- Combi Boilers
- Unvented (e.g. Megaflo)
- Thermal Stores or Heat Banks
- Solar Hot Water systems
- Gas multipoint heaters (like old Ascot types)
and more ....
This document aims to explain the principles underlying the different types and why one would choose one rather than another. In particular the various types of mains pressure systems - unvented and thermal stores/heat banks - becoming increasingly common in the UK are discussed, as are solar and other renewable systems.
This article describes the main features of DHW systems and explains terms used in describing such systems. Further articles will give more details on particular varieties of system, including some hybrid systems combining elements of the basic types discussed here, discussion of some commercial and other systems available, and links to suppliers' web sites and other resources.
Main types of DHW system
The main differences between types of DHW systems are:
- Instantaneously heated e.g. combi boilers, multipoint ('Ascot'-type) instantaneous gas water heaters, instantaneous electric water heaters
versus
- Stored heat e.g. systems with some sort of hot water cylinder
and
- Mains pressure water e.g. combi boilers, unvented ('Megaflow' type) cylinders
versus
- Low pressure with stored water e.g. conventional: tank in attic and hot water cylinder in airing cupboard
The pros and cons of these systems are:
PRO | CON | |
---|---|---|
Instantaneous |
|
|
Stored heat |
|
|
Mains pressure |
|