EN 15332:2007

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Heating boilers - Energetic assessment of hot water storage tanksKotli za gretje - Energetsko ocenjevanje hranilnikov tople vodeChaudieres de chauffage - Evaluation de la performance énergétique des préparateurs d'eau chaudeHeizkessel - Energetische Bewertung von WarmwasserspeichernTa slovenski standard je istoveten z:EN 15332:2007SIST EN 15332:2008en,fr,de91.140.65Oprema za ogrevanje vodeWater heating equipmentICS:SLOVENSKI
STANDARDSIST EN 15332:200801-januar-2008

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15332November 2007ICS 91.140.65 English VersionHeating boilers - Energy assessment of hot water storagesystemsChaudières de chauffage - Evaluation de la performanceénergétique des préparateurs d'eau chaudeHeizkessel - Energetische Bewertung vonWarmwasserspeichersystemenThis European Standard was approved by CEN on 22 March 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15332:2007: E

temperature at the outlet of the hot water side in °C 3.6 usable hot water temperature ϑϑϑϑu minimum temperature for the hot water to be usable
NOTE Minimum temperature for the hot water defined here as difference between the temperature of the warm water ϑw = 45 °C minus the temperature of cold water ϑc = 10 °C (ϑu = ϑw – ϑc = 35 K).

3.21 cycle time ∆∆∆∆ττττ time interval of the data acquisition in s 3.22 nominal operating conditions index n operation conditions resulting from the measurement or given by the manufacturer 3.23 nominal storage temperature temperature of the stored water in the tank as measured by the thermostat 4 Requirements on the hot water storage tanks 4.1 Energy assessment For the energy assessment of the hot water storage tank, the standby loss shall be rated against the hot water capacity according to Figure 1.

a)
b) Key Y standby loss related to the hot water capacity in (Wh/l)/d X hot water capacity Cu in litres A to F coefficient for the rational use of energy, see explanation to the Equations (1) to (3) Figure 1 — Labelling of hot water storage tanks based on the hot water capacity

31_RmaxB,5,52(n)CQLQ××= (1) 31_AmaxB,5,52(n)CQLQ××= (2) 31_UmaxB,5,52(n)CQLQ××= (3) where QB,max is the maximal standby loss in kWh/d; CR
is the rated storage capacity in l; CA
is the actual storage capacity in l; CU
is the hot water capacity in l; QL(n) is the coefficient for rational use of energy, see Figure 1 with n from A to F QL(A) = 0,75; QL(B) = 0,875; QL(C) = 1,0; QL(D) = 1,125; QL(E) = 1,25; QL(F) = 1,375. The hot water capacity depends on the construction of the storage tank. The hot water capacity could be:  estimated with the real storage volume (4.2);  estimated with the real storage volume and the heat exchanger performance (4.3);  measured (4.4). The standby loss shall be measured according to 5.4 or any other method which is proven to give the equivalent results.
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