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Combination BoilerA Combination Boiler (Combi) can provide central heating and hot water without the need for a hotwater cylinder. There no need to store hot water at higher temperatures where heat will be lost, hencea Combi can save money. The problem with them is that they can only supply one tap at a time andhave hot water priority that is they will stop the central heating while heating water.Components:1. Expansion Vessel2. Auto Air Vent3. Heat Exchanger4. Domestic Hot Water Heat Exchanger5. Pump6. Diverter Valve7. Micro Switches8. Differential Pressure Unit9. Water Governor10. Domestic Hot water Expansion Vessel11. By Pass Valve12. Flow Switch13. Low Pressure Sensor14. Pressure Relief Valve15. Pressure GaugeCondensing BoilerTraditional gas boiler discharges hot flue gases directly into the atmosphere, and in doing so throwaway a considerable amount (nearly 25%) of heat which has been generated at a cost.The condensing boiler is designed to extract more heat from a same quantity of gas than is possiblewhen using traditional boilers. Hence saving gas and money in the process. This increase in efficiencyof the boiler is obtained by retrieving most of the heat from the hot flue gases which would otherwisehave gone to waste. The Condensing Boiler uses a secondary heat exchanger or condensing coil torecover heat from the hot flue gases. In gas combustion heat is produced along with water vapour(steam) and mixture of carbon & Nitrogen oxides. The temperature of this flue gas will be near to thatof flame. The flue fan draws the hot flue gas through the primary heat exchanger (the main heatexchanger as in the traditional boiler) which is situated over the flame. The system water is heatedwhen it passes through it and fed to the radiators. The returning water from the system aftercirculating through the radiators will be at low temperature. This low temperature returning waterenters the secondary heat exchanger. Which is heated by the hot flue gas that went through theprimary heat exchanger. The water in the secondary heat exchanger will now recover some heat thatnormally lost on standard boilers.Reference:http://www.centralheatingcentre.com/Central_Heating/boilers.htm
ELEKTRONSKI KATEGORIZACIJSKILIST- EVIDENČNI NI LIST• uradno” ocenjevanje in samoocenjevanje : testiranje• vnos podatkov v evidenčni list je osnova za “programiranje”, sajprogram določene elemente v kategorizacijskem listu označi inizračuna sam• ob morebitni spremembi podatkov v ev.listu po vnosu podatkov vkategorizacijski list se spremenijo tudi vhodni parametri za program,zato se vsi predhodni vnosi v kat.list izbrišejo (shrani?)• obvezna določitev kategorije (klik na puščico)• obvezna določitev vrste NO (klik na puščico pri H,M,P,G!!!)• vpis zahtevanih podatkov v okvirje• označiti morebitno lokacijo v mestu• obvezno leto gradnje (obvezno polje)• vpis datuma uporabnega dovoljenja (n.pr. 12.12.2008)• označiti etažne kopalnice pri 1*MINISTRSTVO ZA GOSPODARSTVO20.2.20095
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