Parabolic Trough

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Javier Rodriguez
HTF pump

Hi
In parabolic Trough
What is the difference between "Parasitic power solar field HTF pump" and "Parasitic power TES and Cycle HTF pump"?

What is the difference between Cycle HTF mass flow rate and Field HTF mass "flow rate total"

Thanks so much

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liub06
Input variables of SSC tcstrough_physical

Hello,

I have a question about the input variables in tcstrough_physical SSC.

1. 'hx_config',is there any explanation for the number represent for heat exchanger type. Like '0' represent for shell-tube heat exchanger.

2. If I have already selected the fluid number, such as 3 represent for VP-1 as field HTF and 0 represent for Hitec Solar Salt as storage fluid, do I still fill the inputs of 'field_fl_props' and 'store_fl_props'?

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solarjoe
Input variable in SAM and SAMSDK

Hello,

I have a question and hope that you can help me.

E.g. for the module "tcstrough_physical" the SDKtool lists
the variable "nLoops" with a type of "SSC_INPUT".

In SAM this variable is available in
Trough, Physical - Solar Field - Actual number of loops

But as a fixed field (shaded blue).

Does that mean it is possible to set this variable explicitly from
the SDK but it is calculated implicitly in SAM?

Do I have to handle all the implicit fields in SAM manually in SAMSDK?

Kind regards,
Joe

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liub06
tcstrough-physical example failed in matlab

Hi

I was attempting to run the tcstrough_physical model with Matlab. I receive an error:

tcstrough_physical errors:
time 0.00 { Controller 3 }:
Heat exchanger sizing failed
unit 3 (Controller) type 'sam_mw_trough_type251' failed at initialization
exec fail(tcstrough_physical): there was a problem simulating in tcskernel(physical trough)

I have already examined the input parameters carefully. In addition,I can't find the explanation for 'hx_config'.

The .m and weather file are as attached. Is there any clue when that might happen?

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ywj11940405
ywj11940405's picture
How can I use the script ,and if I write a new script ,can I ues it with the project that the SAM provide ?

How can I use the script ,and if i write anew script ,can i use it with the CSP projcet that i build in the SAM ? Can I use it with the MATLAB:?

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pkulbeik
Wind Speed Limit

Hello,

What is the wind speed limit in the physical trough model (2016.3.14) that starts defocusing and stowing the solar field?

Regards,
Pam Kulbeik

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Mwende
parabolic trough empirical model

Hello,

A few questions on the parabolic trough empirical model;

1. I'm trying to check the effect of using different types of fuels i.e natural gas/biomass for the fossil back up by changing the boiler LHV efficiency value, but the output doesn't seem to be changing at all for a wide range of efficiency values-I've attached the SAM file here.

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m.nabil
Boiler mass flow rates

Hello,

I am trying to simulate a parabolic trough power plant based on Rankine cycle.
Field HTF fluid: Therminol VP-1
Design loop inlet temp: 293°C
Design loop outlet temp: 391°C

In the "Power Cycle" tab - "Power Block Design Point" Section, I believe that the design inlet & outlet temperatures are automatically copied from the design loop inlet and outlet temperatures from the Solar Field, right?

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m.nabil
Excluding the auxilary heater

Hello!

I am trying to simulate a parabolic trough power plant without an auxiliary heater. My question is: which input parameter do I have to change in order to exclude the auxiliary heater?

I have also noticed in the "Thermal Storage" tab that for both cold and hot tanks there is a a heater set point. Is it possible to eliminate the heater from the simulation?

I am using Therminol 66 as a HTF and TES medium with a field inlet temperature of 290°C and a field outlet temperature of 390°C.

Thanks!
Nabil

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ahmed.g
problem to input some values

How to make iterations to calculate values of min and max mass flow rate and number of assemblies ?

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