CSP IPH system model

aqeelkhan544
Topic Author

20 Jul 2018 06:58 #6354 by aqeelkhan544

CSP IPH system model was created by aqeelkhan544

Dear Paul,
I hope you will be fine. I am designing a 100KWt IPH PTC model for my thesis. this is for processing heat for tea factory. I used location (Pu'er )Kunming, china. I need 6 hours storage.
DNI= 950 w/m2
Heat sink power= 0.10 MWt
target solar multiple = 2 (6 hour storage)
HTF= Therminol t55 (user defined, i added data in table, but dont know the values of freeze protection, min single loop flow rate etc)
Loop Inlet temp= 100
Loop outlet temp= 200
Collector Geometry (User defined)
Reflective aperture area= 570 m2
Aperture width= 3.8 m
Length= 150m , No of modules= 8
Focal length = 1.2
Optical parameters = don't know
Receiver geometry = User defined
Parameters and variations = dont know

I have a problem with System summary portion. It shows constant value total aperture reflective area.

I am sending you my designed SAM File, please review it, if something is missing then guide me.

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pgilman

20 Jul 2018 17:29 #6355 by pgilman

Replied by pgilman on topic CSP IPH system model

Hello,

To change the aperture area, you will need to change the collector geometry on the Collectors (SCAs) input page, and the loop configuration on the Solar Field input page.

Here are the equations SAM uses to calculate the reflective aperture area:

Code:

equations{ 'total_aperture' } = define() {
	return ${single_loop_aperature} * ${nLoops}; };

Code:

equations{ 'single_loop_aperature' } = define() {
	aLoop = ${trough_loop_control};
	nsca = aLoop[0];
	sca_ap[0] = ${csp_dtr_sca_aperture_1};
	sca_ap[1] = ${csp_dtr_sca_aperture_2};
	sca_ap[2] = ${csp_dtr_sca_aperture_3};
	sca_ap[3] = ${csp_dtr_sca_aperture_4};

	total_ap = 0;
	for (i=0;i<nsca;i++)
	{
		sca_t = min(max(aLoop[1+i*3],1),4) - 1;
		total_ap = total_ap + sca_ap[ sca_t ];
	}

	return total_ap;
};

The

Code:

trough_loop_control

variable is defined by the arrangements of SCAs and HCEs in the Single Loop Configuration on the Solar Field Input page.

Best regards,
Paul.

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