Subject: Small Solar Quest. got 6F in 60secs, V=125ml:BTUs?

From: [email-masked] (dsg)
Date: Sat, 27 Jul 1996 01:18:53 GMT

I have a small solar trough concentrator. I lamp-blacked the
absorbition tube that sits at the linear focus of the trough.
I then passed 125mL of water through the absorbtion tube,
with full sun focused on the tube.

In 60 seconds and raised the 125ml of water 6 degrees Farenheit.

Could someone be so kind as to tell me how many BTU's I collected
and how would this relate to BTU's per hour.

thanx
dsg
http://www,chatlink.com/~soltherm/

Small Solar Quest. got 6F in 60secs, V=125ml:BTUs?

---

From: [email-masked](Dale A. Keltie )
Date: 27 Jul 1996 19:34:28 GMT

>Small Solar Quest. got 6F in 60secs, V=125ml:BTUs?

The thermal energy required to raise the temperature of 125 ml of water
6 deg. F (3.333 deg. C) is:

(.125 kg) x (3.333 deg. C) = .4167 kg-cal

(.4167 kg-cal) x (3.968 BTU / kg-cal) = 1.653 BTU

1.653 BTU in 60 sec. = 99.199 BTU/Hr = 29.074 watts

Regards to all,
Dale

---

From: [email-masked] (Harry H Conover)
Date: 27 Jul 1996 21:44:13 GMT

dsg ([email-masked]) wrote:
: I have a small solar trough concentrator. I lamp-blacked the
: absorbition tube that sits at the linear focus of the trough.
: I then passed 125mL of water through the absorbtion tube,
: with full sun focused on the tube.
: 
: In 60 seconds and raised the 125ml of water 6 degrees Farenheit.
: 
: Could someone be so kind as to tell me how many BTU's I collected
: and how would this relate to BTU's per hour.
: 
: thanx
: dsg
: http://www,chatlink.com/~soltherm/

        BTU/Minute = 0.125 x 2.2  x 6 = 1.65

        BTU/Hour = 1.65 x 60 = 99.

                                      Harry C.