Power Tower

4 posts / 0 new
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edwardsun20
Trouble getting model inputs for CSP

Hello NREL,

We tried to look at NREL API example code online for PV systems, and saw that there were only a few inputs that we need to feed the model. We tried running Python code for CSP power tower and power troughs, however, and found that we needed significantly more inputs to our system. Is it necessary for the CSP models to have so many more inputs, and if so, where could we find these values? Are there any notable researchers who have ran this model for solar thermal in the past?

Thanks!!

5 posts / 0 new
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Harry Han
15min output for power tower

Dear Paul

I have created a TMY file with 15min time step. I have imported it into a power tower model and the results show only hourly results. How can I output the 15min results?

Thank you!

Best regards!

Han

6 posts / 0 new
Last post
Harry Han
Two simple questions about design point and wind speed

Dear Paul

I have two simple questions for CSP.

1. Since we have a design point in the CSP tower simulation, then what is the design point sun position?

2. There is a wind stow speed for heliostats. The question is does SAM take into consideration of the wind influence on the heliostats tracking error?

These are two simple questions. I will really appreciate if you can tell me more! Thank you very much!

Han

2 posts / 0 new
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fernandezrama
CSP to heat a fluid

Hello,

Could you tell me if it´s possible to use any system of CSP (concentrating solar power) only to heat a fluid (steam or molten salts), I mean, not to generate electricity?

Thank you very much,

5 posts / 0 new
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solargary
Sub-hourly weather data: Profiles do not match

Dear SAM team:

I am using a 10-minute resolution weather file (attached) in the SAM csv-file format with the power tower module.
Using "View Data" in the "Location and Resource" tab shows daily DNI curves (after zooming in) as expected, i.e. maximum values of DNI around noon.

When using the "Profile" tab of the data viewer, some months show DNI profiles with max. DNI at night and no DNI around noon (see attached screenshots).

Not quite surprisingly, simulation results are not plausible using this file.

2 posts / 0 new
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FernandoK
Flow Rate

I am modeling a power tower with molten salt. How can i know the flow rate of de HTF at the receiver for the design point ?

2 posts / 0 new
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Javier Rodriguez
air pressurized solar tower

Hi
I want to simulate an air pressurized solar tower. On HTF custom, I would like to know what is the reference in the enthapy

Thanks

2 posts / 0 new
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Luca S
atmospheric attenuation: hourly input with macros?

The aerosol concentration in the air and thereby the atmospheric attenuation between heliostats and receiver varies over the time. It would be great to be able to simulate the annual yield of a power tower plant with hourly or at least daily values for the aerosol concentration. As far as I understand this possibility is not yet implemented in SAM. So before diving really deep into the macro scripting (which I did not use until now) my question is as follows:

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Monteleone91
Can I have in solarpilot the energy produced in a year?

Can I have in solarpilot the energy produced in a year?
Best regards

2 posts / 0 new
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Monteleone91
System summary in solarpilot

I want to know in detail what it refers to the value of cost / energy metric present in System summary of Solarpilot model. In the help don't have information.
Best regards.

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