Re: [EnergyPlus_Support] Re: European radiators, EN442, baseboard rating

[Felix Alvaro <chiso_es@xxxxxxxx>]

The previous answer is for an ambient temperature of 21 ° C

For you indicate 18.3 º C is 58.20 ° C

temperature   DELTA.t

18.00 ° C      58.50 ° C

19.00 ° C      57.50 ° C

20.00 ° C      56.50 ° C

21.00 ° C      55.50 ° C

22.00 ° C      54.50 ° C

23.00 ° C      53.50 ° C

24.00 ° C      52.50 ° C

18.30 ° C      58.20 ° C

I focused on the translation into English and not in the initial data

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De: ooodard <povery@xxxxxxxx>
Para: EnergyPlus_Support@xxxxxxxxxxxxxxx
Enviado: Viernes 21 de junio de 2013 15:59
Asunto: [EnergyPlus_Support] Re: European radiators, EN442, baseboard rating

 

Thanks Jean marais

I am modelling an existing building and need to put in a capacity in watts, not have E+ size the capacity. That way, if the installed radiator is too small, E+ will reveal this.

The EU and US rating methods are both simplifications and E+ simplifies what proportion of output is radiative and convective. The EU method states that the following 2 conditions have the same output.

Room at 15C
Supply at 70 C
Return at 60 C

Room at 25
Supply at 80 C
Return at 70 C

In both cases the difference between average water temperature and room air temperature is 50C.

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