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Ilyas, If you have not already done so, it would be wise to look at the
Type1231 documentation in ..\Tess
Models\Documentation\06-HVACLibraryMathematicalReference.pdf
1- Does the temperature of the hot water inlet to the radiator
(Twater, in) change or remain a fixed value for example 50C.
note that I have a system of regulation (on / off). when he
finds a flow = 0 kg / h. he will change it automatically or I have
to put a variable temperature. How to do it.
I am not sure that I understand this question. Yes, the temperature of the water entering the radiator can change. The entering water temperature is an input to the model as is the flow rate. The radiator model computes the amount of heat transfer to the room as a function of the input values so it internally handles the case when there is no water flow into the radiator. 2. I have a gas boiler with a yield of 0.94. I used this as the
fuel power equation (water flow * 4.19 * (50-All)) / (3600 * 0.94)
to find the power. is that correct?
Again, I am not sure I understand. I would recommend that you use a boiler model in which case you'll be asked to provide the efficiency as a parameter (or input depending on which model you choose). The boiler model will then compute the power that the boiler requires. kind regards, David On 07/09/2018 09:13, Ilyas KHELIFA
KERFAH via TRNSYS-users wrote:
-- *************************** David BRADLEY Principal Thermal Energy Systems Specialists, LLC 22 North Carroll Street - suite 370 Madison, WI 53703 USA P:+1.608.274.2577 F:+1.608.278.1475 d.bradley@tess-inc.com http://www.tess-inc.com http://www.trnsys.com |