[TRNSYS-users] Control strategy

[Maurizio Sorce]

Dear Trnsys users,



we have to create a solar cooling control system based on the following strategy:





                        If ((mode = 0)and (mode_status = 1)) then

                                   If (T_supply_air < (T_set_supply_air - dT_dec)) then

                                       mode = -1

                                       mode_status = 0

                                   Endif

                                   

                                   If (T_supply_air > (T_set_supply_air + dT_dec)) then

                                       mode = 1

                                       mode_status = 0

                                   Endif

                        endif

            

            

                        If ((mode = -1) and (mode_status = 1)) then

                            If (T_supply_air < (T_set_supply_air - dT_dec)) then

                                       mode = -2

                                       mode_status = 0

                                   Endif

                                   

                                   IF  (T_supply_air > (T_set_supply_air + dT_dec)) then

                                       mode = 0

                                       mode_status = 0

                                   Endif

                        endif

                        

                        If ((mode = 1) and (mode_status = 1)) then 

                            If (T_supply_air < (T_set_supply_air - dT_dec)) then

                                      mode = 0

                                      mode_status = 0

                                   Endif





                       ... (continue) ....



                   

Is it possible to implement the whole strategy into the Equation tool or is it necessary to use other types? Specifically, is it possible to introduce into the equation tool the "if... then..." function?



In addition, does exist a manual for the equation tool?





---------------------------------------------------------------

Eng. Maurizio Sorce

DREAM Department of Energy and Environmental Research
University of Palermo

Viale delle Scienze, Building 9
I-90128 Palermo, Italy (EU)

mauriziosorce at dream.unipa.it
www.dream.unipa.it

Phone: (+39) 091 236012
Mobile phone: (+39) 3495386296
Fax: (+39) 091484425
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