Domestic Hot Water Systems
rachele di tecra toshiba s2 kiss lettore dvd divx dp-1500 oliver hudson danny y lucas ecs buddie cappuccino ferry corsten adagio rispondi a sto telefono dragostea din tei remix techno toyota yaris 10 alza gonna singole cercano singolo flatout torna nel 2006 toner ricoh p2 monster boob intema knight of old republic sex jenifer lopez la mia vita bassa lo scudo di talos haank crazy shutle home theatre pioneer dcs 232 zombie quadrato guta siemens portatile gigaset gioco platform a colpo sicuro lavatrice lg nuove edizioni del giglio trucchi per prince of persia un capretto peg perego trio pliko p3 roxio bolero ravel mp3 il robot e lo sputnik www mulinobianco it www tds net tele soligor memorie ddr400 cavalli in calore gal rivas angel de saavedra y ra momentus 2 5 5400 rpm 100gb uva spina fort william gran bretagna tutti i giochi di super mario beatiful video sony dcr trv460 motorola v220 silver stampante samsung laser ml-2010 carriponte pescara lezione nel cuore lei yety sports hhhhhhhhhhhhhhhh biberon fisiologico hangstan trivia coolpix 2000 nikon stampante epson aculaser c1100 gatita kay francis shakr nvidia 6800 ultra agp spirit duo mp3 material sono cecchini e gia coverxp pro pila torcia case vacanza sicilia axis 211 mr olympia jet set radio torna in giappone fiche vecchie luiz asus k8v-mx km800 endi com porte interni plastica michela il signore degli anelli il ritorno del re poze porno italia fiat tempra 19 td bill watterson donne in american x link keith maupin kurt nielson www francesca piccinini com www cartoon networt christmas in vienna adattatore ata sata il gamecube europeo entro la primavera humax 5100 www erositalia n philips 22 crt hotel economici bologna cozumel senzafine margaret lettore mp3 1g gare di ballo software videoscrittura philips monitor 15 fondi pensioni aperti multifunzione hp fax trova facila occhiali oxydo jendouba i bellissimi jennifer lopez awards sesso in tre www office blue it poppea it keita sudjuka pioneer 100s offerta vacanza famiglia head xrc 1100 for the love of money palmare mio samsung v6500 sofia baessa historia clinica jugarjuegos singola cerca coppie por nua cabeza quiz patente on line profumi donna mariella burani prenotazione cinema milano evaneces elezioni provinciali a napoli www magic store it welcome to hell mouse wireless targus hp ipaq pocket pc rz1710 midi antoine la tramontana the godfather pajero 3 2 gls 5 porte merchant account modellismo firenze ivan i delfin czarne oczy mix anni 60 fotocamera per 7210 fiat stilo o g m age of empires2 gioco lucca albergo royal copenhagen ibm 160gb sata celentano adriano siemens ac140 edipo key xxl www pakistan muta 2 mm sexual healing mp3 incontro velletri film temi va pensiero tettone grassone tuta adidas masterizzatore dual interno notebook ballo nando crea facce e corpi krec mi dupa battiato gladiator griffin smartdeck valentina fumetto uomo nudi gay arctic cooling freezer 7 origene alfa srl ibimaster 250 webmail bellsouth net i pod nano 2 gb divlje jagode marija inserisci annuncio jonni deep immagini compleanno o ozone dragostea din tei continus dold il maschio e la femmina www sri goc video porno di paris hilton suoneria telefonino nokia cavo composito mp3 slot usb 2 ta isdn usb anziane donne nude hotel 5 stelle bologna cd kodak videogiochi simulazione ps2 download codec dvd guidacci margherita ford fiesta anno 1995 governador valadares cartolina animate festa donna 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 |
|