MT.EVANS OBS PV SYSTEM: DATE & CUMULATIVE AMP HOURS [avg. Ah/day]:
Note: these averages reflect the preceeding 64 days
recorded on the Outback controller
01Aug2006 [MJD53949] 84kWh [+17kWh/3d = 5.67kWh/day = 236Ah/day @24vdc]
28Jul2006 [MJD53945] 67kWh
[Jul’06--system reset by power cycling]
13May2006 [MJD53869] 79.7kAh [+7.4Ah/72d = 108Ah/day, spring]
02 Mar 2006 [MJD 53797] 72.3 kAh [+17.7kAh/221d = 80Ah/day, winter]
24 Aug 2005 [MJD 53576] 54.6 kAh [+3.8kAh/29d = 131Ah/day, summer]
26 Jul 2005 [MJD 53578] 50.8 kAh [+4.6kAh/26d = 177Ah/day, summer]
28 Jun 2005 [MJD 53552] 46.2 kAh [ +4.5kAh/30d = 150Ah/day, summery]
31 May 2005 (MJD 53522) 41.7 kAh [+6.9kAh/54d = 128Ah/day, spring]
07 Apr 2005 (MJD 53468) 34.8 kAh [+15.3kAh/144d = 106Ah/day overwinter]
14 Nov 2004 (MJD 53324) 19.5 kAh [+5.2kAh/41d = 127Ah/day autumn]
02 Oct 2004 (MJD 53283) 14.3 kAh [+14.3kAh/63d = 227Ah/day late summer]
07 Sep 2004 [MJD 53256] 11.3 kAh [+11.3kAh/36d = 314 Ah/day, summer]
02 Aug 2004 (MJD 53220) start, 0 kAh [new controller and replacement pv panels]
Ah/day rate 6 4
200+ . . . . . . . . . 4 . .
150+ . . . . . 5 5 . . . . .
100+ . . . 5 5,6 . . 5 . . 4 .
50+ . . 6 . . . . . . . . .
0+ . . . . . . . . . . . .
J F M A M J J A S O N D
Sample readings:
Daily amp-hour accumulations noted after installation of Outback charge controller, 8/04:
2005 – DATE – Amp hours stored – minutes at float voltage – sum [kAh] - notes
|
01
Feb 2005 |
Ah |
mins |
Kah |
|
|
02 |
125 |
0 |
|
|
|
03 |
133 |
0 |
|
|
|
04 |
188 |
154 |
|
|
|
05 |
131 |
189 |
|
|
|
06 |
112 |
0 |
|
Cloudy? |
|
07 |
98 |
0 |
|
Cloudy? |
|
08 |
117 |
213 |
|
|
|
09 |
121 |
264 |
|
|
|
10 |
118 |
256 |
|
|
|
11 |
116 |
196 |
|
|
|
12 |
83 |
0 |
|
|
|
13 |
134 |
258 |
|
|
|
14 |
117 |
195 |
|
|
|
15 |
92 |
0 |
|
|
|
16 |
109 |
56 |
|
|
|
17 |
127 |
278 |
|
|
|
18 |
118 |
0 |
|
Cloudy? |
|
19 |
89 |
0 |
|
Cloudy? |
|
20 |
127 |
142 |
|
|
|
21 |
120 |
237 |
|
|
|
22 |
42 |
0 |
|
Cloudy? |
|
23 |
121 |
0 |
|
Cloudy? |
|
24 |
137 |
288 |
|
|
|
25 |
117 |
203 |
|
|
|
26 |
119 |
153 |
|
|
|
27 |
69 |
0 |
|
|
|
28 |
142 |
250
= 4h10m |
|
|
|
01
Mar 2005 |
117 |
180
= 3h |
|
|
|
02 |
128 |
287 |
|
|
|
03 |
121 |
189 |
|
|
|
04 |
124 |
205 |
|
|
|
05 |
125 |
254 |
|
|
|
06 |
133 |
310
= 5h10m |
|
|
|
07 |
134 |
314 |
|
|
|
08 |
41 |
0 |
|
Cloudy? |
|
09 |
146 |
0 |
|
Cloudy? |
|
10 |
121 |
160 |
|
|
|
11 |
131 |
315 |
|
|
|
12 |
126 |
275 |
|
|
|
13 |
125 |
149 |
|
|
|
14 |
39 |
0 |
|
V
cold |
|
15 |
117 |
0 |
|
V
cold |
|
16 |
132 |
89 |
|
|
|
17 |
114 |
213 |
|
|
|
18 |
116 |
197 |
|
|
|
19 |
121 |
256 |
|
|
|
20 |
52 |
0 |
|
|
|
21 |
143 |
64 |
|
|
|
22 |
125 |
283 |
|
|
|
23 |
89 |
0 |
|
Cloudy? |
|
24 |
137 |
0 |
|
Cloudy? |
|
25 |
96 |
0 |
|
Cloudy? |
|
26 |
106 |
0 |
|
Cloudy? |
|
27 |
132 |
333
= 5h33m |
|
|
|
28 |
121 |
243 |
|
|
|
29 |
110 |
0 |
|
|
|
30 |
99 |
0 |
|
Snow |
|
31 |
6 |
0 |
|
|
|
01
Apr 2005 |
192 |
105 |
|
|
|
02 |
118 |
267 |
|
|
|
03 |
120 |
300
= 5h |
|
|
|
04 |
117 |
273 |
|
|
|
05 |
119 |
224 |
|
|
|
06 |
129 |
332
= 5h32m |
|
|
|
07 |
143 |
301 |
34.8
kAh sum |
Site
visit |
|
08 |
128 |
0 |
|
|
|
09 |
140 |
120 |
|
|
|
10 |
79 |
0 |
|
Tdawn=15F |
|
11 |
185 |
138 |
|
|
|
12 |
177 |
249 |
|
|
|
13 |
200 |
239 |
|
Tdawn=19F |
|
14 |
213 |
214 |
|
|
|
15 |
185 |
0 |
|
Tdawn=24F |
|
16 |
229 |
0 |
|
|
|
17 |
244 |
0 |
|
|
|
18 |
236 |
0 |
|
|
|
19 |
200 |
0 |
|
|
|
20 |
224 |
58 |
|
Tdawn=20F |
|
21 |
230 |
0 |
|
|
|
22 |
236 |
86 |
|
|
|
23 |
210 |
52 |
|
|
|
24 |
81 |
0 |
|
|
|
25 |
51 |
0 |
|
Tdawn=22F |
|
26 |
140 |
0 |
|
|
|
27 |
135 |
0 |
|
|
|
28 |
136 |
0 |
|
|
|
29 |
124 |
0 |
|
Tdawn=16F |
|
30 |
113 |
134 |
|
Tdawn=12F |
|
May
2005 |
Max
116Ah Min
13Ah, 0 flt |
Max
368 mins flt |
5/31/05,
41.7kAh Dawn
temp: 5/1, 16 |
5/10,
26F; 5/20, 37F; 5/30, 32F |
2004
June 2004: Replaced C40 charge controllers with new Outback unit
|
Date |
Accum
[amp-hr] |
Float
time [mins] |
Sum
[kiloAmp-hrs] |
Notes |
|
28
June 2004 |
123 |
|
|
|
|
29 |
132 |
|
|
|
|
30
June |
84 |
|
|
|
|
01
July 2004 |
0 |
|
|
Snow
cover! |
|
02 |
177 |
|
|
|
|
03 |
239 |
|
|
|
|
04 |
247 |
|
|
|
|
05 |
181 |
|
|
|
|
06 |
203 |
|
|
|
|
07 |
267 |
306
mins |
|
|
|
08 |
273 |
|
|
|
|
09 |
182 |
|
|
|
|
10 |
171 |
|
|
|
|
11 |
182 |
|
|
|
|
12 |
212 |
|
|
New
batt arr. |
|
13 |
233 |
|
|
|
|
14 |
115 |
|
|
|
|
15 |
76 |
|
|
|
|
16 |
80 |
|
|
|
|
17-31
July ‘04 |
No data saved |
|
|
|
August
2003: Replaced 1/3 of A-frame roof panels due to electrical damage.
|
Date |
Accum
[amp-hr] |
Float
time [mins] |
Sum
[kiloAmp-hrs] |
Notes |
|
01
Aug 2004 |
96
Ah |
66
mins |
|
|
|
02 |
99 |
0 |
|
|
|
03 |
148 |
226 |
|
|
|
04 |
187 |
0 |
|
|
|
05 |
146 |
0 |
|
|
|
06 |
202 |
51 |
|
|
|
07 |
123 |
0 |
|
|
|
08 |
126 |
241 |
|
|
|
09 |
133 |
360 |
|
|
|
10 |
209 |
79 |
|
|
|
11 |
208 |
0 |
|
|
|
12 |
148 |
0 |
|
|
|
13 |
221 |
0 |
|
|
|
14 |
141 |
130 |
|
|
|
15 |
137 |
219 |
|
|
|
16 |
130 |
0 |
|
|
|
17 |
111 |
0 |
|
|
|
18 |
50 |
0 |
|
|
|
19 |
32 |
0 |
|
Snow? |
|
20 |
95 |
0 |
|
|
|
21 |
152 |
0 |
|
|
|
22 |
100 |
0 |
|
|
|
23 |
136 |
197 |
|
|
|
24 |
119 |
0 |
|
|
|
25 |
182 |
0 |
3.1
kAh |
Since
8/2 |
|
26 |
170 |
0 |
|
|
|
27 |
67 |
0 |
|
|
|
28 |
143 |
310 |
|
|
|
29 |
125 |
295 |
|
|
|
30 |
105 |
0 |
|
|
|
31 |
110 |
0 |
|
|
Sept 2004
|
Date |
Accum
[amp-hr] |
Float
time [mins] |
Sum
[kiloAmp-hrs] |
Notes |
|
01
Sept 2004 |
121
Ah |
134
mins |
|
|
|
02 |
136 |
0 |
|
|
|
03 |
153 |
0 |
|
|
|
04 |
36 |
0 |
|
|
|
05 |
108 |
0 |
|
|
|
06 |
150 |
317 |
11.3
kAh |
|
|
07 |
251 |
0 |
|
|
|
08 |
125 |
0 |
|
|
|
09 |
125 |
0 |
|
|
|
10 |
114 |
111 |
|
|
|
11 |
138 |
267 |
|
Tmin=+15F |
|
12 |
122 |
0 |
|
|
|
13 |
128 |
159 |
|
|
|
14 |
124 |
145 |
|
|
|
15 |
152 |
300 |
|
|
|
16 |
139 |
257 |
12.7
kAh |
|
|
17 |
145 |
172 |
|
H20
topped |
|
18 |
161 |
140 |
|
|
|
19 |
24 |
0 |
|
Snow |
|
20 |
186 |
0 |
|
|
|
21 |
13 |
0 |
|
|
|
22 |
69 |
0 |
|
|
|
23 |
179 |
0 |
|
|
|
24 |
148 |
0 |
|
|
|
25 |
134 |
26 |
|
|
|
26 |
138 |
0 |
|
|
|
27 |
99 |
0 |
|
|
|
28 |
121 |
0 |
|
|
|
29 |
79 |
0 |
|
|
|
30 |
104 |
0 |
|
|
Oct 2004
|
Date |
Accum
[amp-hr] |
Float
time [mins] |
Sum
[kiloAmp-hrs] |
Notes |
|
01
Oct 2004 |
2 |
0 |
|
Snow |
|
02-14 |
No
data saved |
|
|
|
|
15 |
133
Ah |
79
mins |
|
|
|
16 |
156 |
241 |
|
|
|
17 |
138 |
87 |
|
|
|
18 |
77 |
0 |
|
|
|
19 |
75 |
0 |
|
|
|
20 |
186 |
0 |
|
|
|
21 |
148 |
0 |
|
|
|
22 |
40 |
0 |
|
|
|
23 |
200 |
160 |
|
|
|
24 |
24 |
0 |
|
|
|
25 |
113 |
0 |
|
|
|
26 |
162 |
0 |
|
|
|
27 |
36 |
0 |
|
|
|
28 |
87 |
0 |
|
|
|
29 |
85 |
0 |
|
|
|
30 |
211 |
190 |
|
|
|
31
Oct |
95
Ah |
0
mins |
|
|
|
01
Nov 2004 |
4
Ah |
0
mins |
|
|
|
02 |
225 |
80 |
|
|
|
03 |
148 |
270 |
|
|
|
04 |
143 |
262 |
|
|
|
05 |
141 |
96 |
|
|
|
06 |
148 |
227 |
|
|
|
07 |
152 |
234 |
|
|
|
08 |
139 |
64 |
|
|
|
09 |
52 |
0 |
|
|
|
10 |
10 |
0 |
|
|
|
11 |
32 |
0 |
|
|
|
12 |
23 |
0 |
|
|
|
13 |
13 |
0 |
|
|
|
14 |
155 |
0 |
19.5
kAh |
site-visit |
|
15 |
|
|
|
|
New solar pv array undergoing winter testing
In Sept.1999, we added 1200 watts of experimental solar array panels to the south face of the observatory. The new panels are provided by Siemens Corp, and made of a CIS composite quite different from silicate arrays. Watch this space for developments.
Microwave Data Link Established
June 1998
With the help fo FreeWave Inc. wireless data transceivers, Mt.Evans observatory
is now linked to the outside world at speeds to 115 kbps via 910MHz spread-
spectrum technology pioneered locally by FreeWave (www.freewave.com). Watch
this website for live images and remote operations to follow as soon as these
can be organized. This is vital as Mt.Evans has no electrical or phone lines.
In related developments, Merlin Controls is completing automation of the Ash dome which will allow the telescope and dome to be controlled under one software package. See merlin.com. This is essential for eventual, remote operations.
Renewable Energy Trust provides PHOTOVOLTAIC GRANT!
October 1997
MT.EVANS OBSERVATORY GOES PHOTOVOLTAIC
Contact persons: Prof. Robert Stencel, DU 303-871-2238, rstencel@du.edu
Andy Sulkko, PSCo/RET 303-294-2554, asulkko@psco.com
Joseph Burdick, BTU, 303-274-4358
The University of Denver's new Meyer-Womble Observatory, located atop 14,268
ft Mt.Evans, now receives its continuous supply of electrical power directly
from the Sun. Because the observatory is remote from any electrical power
lines, generators have been the only power sources to date. Here is a sample of
the data being collected with the array:
The installation of a continuous power source moves the new facility one step closer to the goal of remote operability. "The provision of a modest but steady source of power will enable us to begin overwinter monitoring of the observatory systems, and develop the communication pathways needed to ultimately bring telescope images to classrooms, Gates Planetarium and the internet" says DU astronomy professor Robert Stencel, observatory director.
The installation of the 1400 watt photovoltaic system is being provided with a $14,268 grant from the Renewable Energy Trust, matching money from the University, and contributions in-kind from the Public Service Company, the Colorado Office of Energy Conservation and the National Renewable Energy Lab. The Renewable Energy Trust has been involved in a number of photovoltaic and wind energy demonstration projects regionally, and promotes diversified energy sources needed for the coming century...
What's unique about this installation, other than its location, is that the solar panels are integrated into the roofing shingle material, so no exposed boxes will stand off above a normal looking roof. The PV-shingles are made by United Solar Systems of Troy, MI, and the project management is being provided by Joseph Burdick of Burdick Technologies Unlimited, Lakewood CO. The shingle installation is being done by D and D Roofing of Denver, and the electrical work by Ken Thames, Thames Electrical, Denver. The work will ideally be completed by late September, before autumn weather begins to hinder easy access to the peak.
For further information and updates, please see our webpages: www.du.edu/~rstencel www.psco.com
PROGRESS TOWARD FIRST LIGHT
FIRST LIGHT ACHIEVED 16 AUGUST 1997!
We succeeded in getting the new telescope operational this summer, after the
success of building construction last summer which ended with an early snowy
autumn. Among the tasks completed include:
Hoist system, install;
Hatchway doors, install;
Air Handling Unit checkout;
Telescope cooling system;
Telescope thermal monitoring system;
Telescope control system; Oxygen system setup;
Telescope back plates;
Mirror cells - prep, assembly cart and assembly;
Secondary mirror systems;
Telescope tube interior paint and baffles;
Telescope tube counterweights;
Telescope tube fan units;
Yoke system & limit hardware;
Telescope drive systems;
Optical alignment and tests leading to first light.
As you can tell, we had a busy summer to get the system up and working. Stay
tuned for announcements.
FIRST LIGHT ACHIEVED 16 AUGUST 1997!
