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Arrate, Most tempering valves that I am familiar with are three-way (they mix cold water in with a source that is hotter than the desired delivery temperature). There is a model of such a valve in the standard Trnsys18 library. If you are using Trnsys17 then there is a model in the TESS Controllers library or the same function can be achieved using Type11. To use Type11 for this, have a look at its documentation; there is an example of setting it up as a tempering valve. I am not sure what the 4th way is used for in your case. Is it perhaps to bring the temperature up to a minimum allowable value using water from a hot source? If so then you might be able to use two tempering valves in sequence to achieve this. Trnsys18 has both heating and cooling tempering valve controller models. If you are using an earlier version you'll need to be a little clever about how you apply the models' control signals because those models are only set up for cooling applications. kind regards, David
On 03/08/2019 07:35, ARRATE HERNANDEZ
via TRNSYS-users wrote:
Dear users, -- *************************** David BRADLEY Principal Thermal Energy Systems Specialists, LLC 3 North Pinckney Street - suite 202 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 |