Ahmad,
I would recommend that you download the tutorial called "Temperature Level Control from Energy Rate Control " at:
http://sel.me.wisc.edu/trnsys/downloads/tutorials_and_examples/tutex17.htm
or if you are using v16
http://sel.me.wisc.edu/trnsys/downloads/tutorials_and_examples/tutex.htm
It will explain some of the differences between calculating a building load and simulating the performance of HVAC systems. It will also lead you through an example of converting a load computation simulation into an HVAC system simulation.
kind regards,
David
On 02/07/2017 13:34, ahmad abbasian via TRNSYS-users wrote:
Dear Jeff
Thank you for your guiding. I have simulated my HVAC system at nominal condition, alone not using the building model. Now I'm going to use this system connected to a building. Now my question is how should I match the HVAC cooling production to the building load
which is transient? should I control the temperature and humidity also or just the flow rate should be controlled to meet the load?
I couldn't find a similar example in TRNSYS examples. Could you send me an example in case of having some please?
Thank you
..............................................................................................
Ahmad abbasianzadeh
Solar energy Researcher
Harrisburg, Pensylvania
Ahmad,
There are literally hundreds of ways to control the temperature and humidity in a space. I would suggest you do some reading to figure out a common HVAC system given your climate and type of building - then you can begin to replicate that system in TRNSYS.
Jeff
On 02/07/2017 12:08 pm, ahmad abbasian via TRNSYS-users wrote:
Hello
I'm simulating a solar assisted coolig system for a building. The building cooling load is transient. so how the HVAC system should be controlled to cover the building load? I guess that the supply air temperature and humidity ratio should be constant (
a value in the comfort region ) and the air flow rate should be controlled using a variable speed fan to cover the cooling load. Is it right? any better idea?
Also I don't know how the control system should be? should I use a thermostat?
If any one can send me an example it will be very useful for me to learn
Thank you
..............................................................................................
Ahmad abbasianzadeh
master of energy systems engineering
Solar energy Researcher
Harrisburg, Pensylvania
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