Hi,
I'm trying to simulate a stratified water heater for São Paulo - Brazil .epw, with a heater capacity of 6000W, and 40 minutes of consumption for bath (4l/min). I've found in the table the consumption of energy for month:
WATER HEATER TOTAL DEMAND HEAT TRANSFER ENERGY [J] (kWh) WATER HEATER HEAT LOSS ENERGY [J] (kWh) January 482239000.00 133.96 -79534413.60 -22.09 February 443646000.00 123.24 -73541655.60 -20.43 March 538367000.00 149.55 -85841829.00 -23.84 April 550458000.00 152.91 -94792808.10 -26.33 May 600509000.00 166.81 -105807662.30 -29.39 June 580653000.00 161.29 -102193879.20 -28.39 July 612884000.00 170.25 -108955406.70 -30.27 August 591676000.00 164.35 -103599575.70 -28.78 September 556954000.00 154.71 -96280359.00 -26.74 October 578996000.00 160.83 -99992914.30 -27.78 November 543994000.00 151.11 -93088050.10 -25.86 December 540370000.00 150.10 -89565130.60 -24.88
I convert J to kWh and subtracted the Total Demand for Loss but this consumption of the heater element is too high! I dont know if I'm taking the wrong outputs or if there are some mistake in the .idf. The temperatures are ok. Does anybody know about it? I attched the files.Thanks.
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Posted by: Jean Marais <jeannieboef@xxxxxxxxx>
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