Monthly performance report

MISSING IMAGE

Material Information

Title:
Monthly performance report Colorado Sunworks
Series Title:
SOLAR ; 1051-79/06
Uncontrolled:
Colorado Sunworks
Physical Description:
v. : ill. ; 28 cm.
Language:
English
Creator:
United States -- Dept. of Energy
Publisher:
Dept. of Energy
Place of Publication:
Washington
Publication Date:

Subjects

Subjects / Keywords:
Solar houses -- Colorado -- Longmont   ( lcsh )
Solar energy -- Colorado -- Longmont   ( lcsh )
Solar water heaters   ( lcsh )
Genre:
federal government publication   ( marcgt )
non-fiction   ( marcgt )

Notes

General Note:
MONTHLY CATALOG NUMBER: gp 80007787
General Note:
National solar heating and cooling demonstration program.
General Note:
National solar data program.

Record Information

Source Institution:
University of Florida
Rights Management:
All applicable rights reserved by the source institution and holding location.
Resource Identifier:
aleph - 022609083
oclc - 05961910
System ID:
AA00013826:00001


This item is only available as the following downloads:


Full Text
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SOLAR/1051-79/06

Monthly

Performance

Report






COLORADO SUNWORKS
JUNE 1979


U.S.


Department of Energy

National Solar Heating and
Cooling Demonstration Program


National Solar Data Program


-19


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NOTICE


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This report was prepared as an account of work sponsored by the United States
Government. Neither the United States nor the United States Department of Energy, nor
any of their employees, nor any of their contractors, subcontractors, or their employees.
make any warranty, express or implied, or assume any legal liability or responsibility for
the accuracy, completeness or usefulness of any information, apparatus, product or
process disclosed, or represents that its use would not infringe privately owned rights.







MONTHLY PERFORMANCE REPORT
COLORADO SUNWORKS
JUNE 1979

I. SYSTEM DESCRIPTION

The Colorado Sunworks solar energy system is a passive solar energy
system used for both space heating and domestic hot water preheating of
a single-family dwelling located in Longmont, Colorado. The building is
a three bedroom single-story house with approximately 1,800 square feet
of living space as illustrated in Figure 1.


The passive space heating system, illustrated schematically in Figure 2,
is a combination drum wall and direct gain system. Sunlight enters the
double-glazed windows (approximately 300 square feet) on the south side
of the building where the majority of the energy is absorbed by the
black painted 55-gallon water-filled drums (54 drums total). The remain-
der of the energy is either absorbed in the 6-inch thick concrete slab
floor or used to satisfy the daytime space heating demand. The 8-inch
thick exterior insulated reinforced concrete building walls also serve
as a secondary solar storage mass.

At night, or during periods of low incident solar energy, heat losses
through the glazing are reduced by using movable insulation in the form
of a Beadwall.* The Beadwall is constructed using the two panes of glass
spaced 5-1/2 inches apart. Beads of white-colored rigid insulation can
be blown into the space between the glass or sucked out using electrically
driven blowers. When not used for south wall insulation, the beads of
insulation are stored in tanks located in the garage. Operation of the
Beadwall is automatically controlled based on sensors measuring incident
solar energy and inside and outside temperature. This automatic opera-
tion may be manually overridden.



* Beadwall is a registered trademark of the Zomeworks Corporation,
Albuquerque, NM.










~----'~--*-`,1


Hot Water
Preheat Tank

Entry
Air Lock-

Vertical 55 Gal.
Drums



Hot Water
Preheat Tank

55 Gallon Drums-
Filled with Water *


n


f/i

'- /


all drums are stacked horizontally except in the Atrium where a
single stack is placed vertically.
plan view

Figure 1. COLORADO SUNWORKS PASSIVE SOLAR SPACE HEA TING SYSTEM


< SOUTH

























Wind Turbines


3" Foil Foam 7//
with 6" of Rock
Subbase


ORIGINATED 2/9/79


east elevation


Figure 2. COLORADO SUNWORKS PASSIVE SOLAR SPACE HEATING SYSTEM








Distribution of the collected solar energy to the house is by both
convection and radiation. A unique feature of this building is the
technique used for distribution of collected solar energy from the drums
to the north side of the house. The vertically stacked drums near the
south wall form a drumwell chimney where heated air rises through ceiling
vents above the drums into an open plenum area between the roof and the
ceiling of the rooms. Additional vents from this plenum on the north
side of the house provide a path for the warm air into the room, thus
providing for a thermosiphon flow around the inside of the building.


The building design and construction makes use of a number of energy
conserving features. The exterior skin of the building (including the
bottom of the slab floor) is well insulated and sealed. Earth berms on
the north, east, and west sides of the house provide additional insula-
tion along with a damping of the extremes in temperature variation of the
outside skin of the house. The roof is also covered with approximately
one foot of earth. Additional energy conserving features include the
use of an entry vestibule to serve as an airlock and the placement of
the garage to the northwest to serve as a windbreak.


Auxiliary space heating energy is provided by either natural gas-fired
hydronic baseboard units or by a wood-burning fireplace. The fireplace
has a provision for recirculation of room air while providing outside
air for combustion.

The passive solar domestic hot water system (Figure 3) consists of two
30-gallon tanks which have been stripped of their insulation, painted
black, and positioned next to the south wall (Figure 1). Domestic hot
water is preheated in these tanks before passing on demand to the natural
gas-fired domestic hot water tank where it is raised to operating tempera-
ture. The preheat tanks are insulated from the living space by interior
walls, and are insulated from the outside conditions at night using the
Beadwall movable insulation. Reflective surfaces inside the insulated
spaces enhance the absorption of incident solar radiation.

















COLD WATER
SUPPLY


o DOMESTIC
HOT
WATER
















ORIGINATED 2/9/79


Figure 3. COLORADO SUNWORKS PASSIVE SOLAR DOMESTIC HOT WATER SYSTEM SCHEMATIC


T305


F300







Summer overheat protection is provided by several means. A roof overhang
over the south wall provides shading from the high summer sun. The
Beadwall movable insulation can be closed during the day to prevent
solar radiation from entering the building. Cooling of the building is
enhanced by the use of nighttime ventilation. Cool outside air can
enter the house through open windows, passing over the solar storage
masses and removing energy before exiting the building through roof
vents located in the plenum area between the ceiling and roof. This
natural flow is enhanced by the use of wind turbines above the roof
vents as illustrated in Figure 2. When the house is closed during the
daytime hours, the cooled solar storage masses absorb energy, thus
tempering conditions inside the living space.


Predicted solar contribution for this system is 65 percent of the energy
requirements for space heating and domestic hot water. The building is
located near Longmont, Colorado (north of Denver) on a plain at least 10
miles east of significant changes in the terrain elevation. The average
annual heating requirement for this area is over 6,000 heating degree-
days. Long-term monthly average outside ambient temperatures range from
30F in January to 730F in July. Relative humidity is generally quite
low. The average annual percentage of available sunlight is 64 percent.
The most significant local climate effects are the high surface winds
typically encountered during periods of changing weather conditions.

II. PERFORMANCE ANALYSIS

A. Introduction

The June report begins the summer season evaluation of the Colorado Sunworks
space heating system. During warm weather operation, the primary thermal
performance concern for a passive space heating system is potential overheat-
ing of the conditioned space. Building temperatures in June remained below
80F during the entire month as the occupants were able to effectively utilize
the system controls to prevent overheating. The solar domestic hot water sys-
tem continued to operate, satisfying 21 percent of the hot water load.







B. Weather


The daily average incident solar energy during June was 648 Btu/ft2-day,
less than the long-term average of 838 Btu/ft2-day derived from measure-
ments at the nearby Denver, Colorado weather station. The average outside
ambient temperature of 660F was the same as the long-term average. Surface
winds were occasionally quite high, particularly on June 19, when the daily
average wind speed was greater than 10 miles per hour.

C. System Thermal Performance

Domestic Hot Water The solar energy absorbed in the two domestic hot
water preheat tanks satisfied 21 percent of the domestic hot water
demand of 1.61 million Btu by supplying 0.41 million Btu of solar energy
from the -preheat tanks. An average of 88 gallons of hot water were used
each day by the four-member family living in the house. The solar contri-
bution never reaches zero, even after the water in the preheat tanks has
been completely replaced. This is due to energy transfer from the house
(74*F) to the water in the preheat tanks (cold supply water temperature
averages 550F) since the preheat tanks are not completely thermally
isolated from the interior of the building. Approximately 2.81 million
Btu of natural gas was used as auxiliary fuel by the hot water heater.
Assuming a conversion efficiency of 60 percent, then 1.69 million Btu of
auxiliary thermal energy was delivered to the hot water. Using the as-
sumed efficiency of 60 percent, the fossil fuel savings due to the hot
water solar energy system are estimated to be 0.69 million Btu (690 cubic
feet*) of natural gas. Daily variations in hot water solar fraction and
hot water energy savings are due to variations in incident solar energy
and daily variations in the hot water use, both in time of use and amount
of use.




* Assumes 1,000 Btu per cubic foot.






Space Heating During June the application of system controls by the oc-
cupants was satisfactory in preventing any significant overheating of the
conditioned space. The average building temperature was a comfortable 74*F.
Building temperatures near 80F were observed only in the late afternoon
near the end of the month as daily average outside ambient temperatures ex-
ceeded 700F.

D. Observations

Several changes to the numbers in the attached computer printout are made
for warm weather reporting of passive systems. The building is assumed to
have a zero heating load. Performance factors relating to energy collection
do not apply for the warm weather periods since the task for a passive heat-
ing system in the summer is energy rejection rather than energy collection.


E. Energy Savings

Fossil energy savings for the solar energy systems were 690 cubic feet of
gas due to the solar hot water preheat system. The power necessary to operate
the Beadwall nighttime insulation system was 34 kwh. This energy is applied
as a penalty to energy savings.

Total estimated energy consumption during June was 477 kwh of electrical
energy, 2,822 cubic feet of natural gas, and 0.41 million Btu of solar
energy.

III. ACTION STATUS

At the next site visit, the sensor used to sense fireplace operation is
to be changed from a thermal switch to a surface temperature measurement.









SOLAR HEATING AND COOLING DEMONSTRATICh PROGRAM


MONTHLY REPORT
SITE SUMMARY


SITE: COLORADO SUNWORKS
REPORT PERIOD: JUNE.1979


LONGMONT, COLORADO


SOLAR/ 101-79/06


SITE/SYSTEM DESCRIPTION:
THE COLORADO SUNWORKS SOLAR ENERGY SYSTEM PROVIDES SPACE HEATING AND
DOMESTIC HOT WATER PREHEATING. THE PASSIVE HEATING SYSTEM CONSISTS
OF A ORUMWALL COLLECTOR/STORAGE UNIT USED IN CONJUNCTION WITH A
BEADWALL, TWC 30 GALLON TANKS POSITIONED NEXT TO THE SOUTH WALL AND
INSULATED FROM THE INTERIOR LIVING SPACE. ENERGY CONSERVING FEATURES
INCLUDE INCREASED INSULATION, THE USE OF BERMS ON ThE NORTH,
EAST AND WEST SIDES, AN AIRLOCK AND THE PLACEMENT OF THE GARAGE TC
THE NORTHWEST TO SERVE AS A WINDBREAK.


GENERAL SITE DATA:
INCIDENT SOLAR ENERGY


COLLECTED SOLAR ENERGY

AVERAGE AMBIENT TEMPERATURE
AVFRAGF BUILDING TEMPERATURE
ECSS SOLAR CONVERSION EFFICIENCY
FCSS OPERATING ENERGY
TOTAL SYSTEM OPERATING ENERGY
TOTAL ENERGY CONSUMEDl


5.831 MILLION STU
19454 BTU/SO.FT.
h.A. MILLION BTU
N.A. BTU/SC.FT.
66 DEGREES F
74 DEGREES F
0.07
0.116 NILLICN BTU
0.116 MILLION PTU
3.342 MILLION BTU


SURSYSTEM SUMMARY:

LOAD
SOLAR FRACTION
SCLAR ENERGY USED
OPERATING ENERGY
AUX. THERMAL ENERGY
AUX. ELECTRIC FUEL
AUX. FOSSIL FUEL
ELECTRICAL SAVINGS
FOSSIL SAVINGS


HOT WATER
1.612
21
0.411
N.A.
1 689
N.A.
2.815
N.A.
0.685


HEATING
0.000
0
0.000
0.000
0.000
N.A.
0.000
N.A.
0.000


COOLING
N.A.
N.A.
N .A
N.A.
N.A.
N.A.
N A.
N A.
N.A.


SYSTEM TOTAL
l. 12 MILLION
21 PERCENT
0.411 MILLION
0.116 MILLION
1.68c9 ILLICN
,.A. MILLION
2.815 NILLICN
-0.11E MILLION
0.665 MILLION


SYSTEM PERFORMANCE FACTOR:


0.504


* DENOTES UNAVAILABLE DATA
* DENOTES NULL DATA
N.A. DENOTES NOT APPLICABLE DATA

REFERENCE: USERS GUIbE TO THE MONTHLY PERFORMANCE REPORT
OF THE NATIONAL SOLAR DATA PROGRAMFEERUARY 28,1978,
SOLAR/O004-79/18


BTU

BTU
BTU
BTU
BTU
BTU
BTU
BTU






SOLAR HEATING AND COOLING DEMONSTRATION PROGRAM


MONTHLY REPORT
SITE SUMMARY


SITE: COLORADO SUNWORKS
REPORT PERIOD: JUNE,1979


LONGMONT, COLORADO


SOLAR/1051-79/06


SITE/SYSTEM DESCRIPTION:
THE COiORADO SUNWORKS SOLAR ENERGY SYSTEM PROVIDES SPACE HEATING AND
DCMOSTIC HOT WATER PREHEATING. THE PASSIVE HEATING SYSTEM CONSISTS
OF A DRUMWALL COLLECTOR/STORAGE UNIT USED IN CONJUNCTION WITH A
BEADWALL, TWO 30 GALLON TANKS POSITIONEn NEXT TO THE SOUTH WALL AND
INSULATED FROM THE INTERIOR LIVING SPACE. ENERGY CONSERVING FEATURES
INCLUDE INCREASED INSULATION, THE USE OF BERMS ON THE NORTH,
EAST AND WFST SIDES, AN AIRLOCK AND THE PLACEMENT OF THE GARAGE TC
THE NORTHWEST TO SERVE AS A WINDBREAK.


GENERAL SITE DATA:
INCIDENT SOLAR ENERGY


COLLECTED SOLAR ENERGY

AVERAGE AMBIENT TEMPERATURE
AVERAGE BUILDING TEMPERATURE
ECSS SOLAR CONVERSION EFFICIENCY
ECSS OPERATING ENERGY
TOTAL SYSTEM OPERATING ENERGY
TOTAL ENERGY CONSUMED


6. 1 c 1
220922
N*.A.
l.A.
19
23
C.07
0.122
0.122
3.525


GIGA JOULES
KJ/SO .M
GIGA JOULES
KJ/SQ .M
DEGREES C
DEGREES C


GIGA
GIGA
GIGA


JOULES
JOULES
JOULES


SUBSYSTEM SUMMARY:

LOAD
SOLAR FRACTICN
SOLAR ENERGY USED
OPERATING ENERGY
AUX. THERMAL ENG
AUX. ELECTRIC FUEL
AUX. FOSSIL FUEL
ELECTRICAL SAVINGS
FOSSIL SAVINGS


HOT WATER
1.700
21
0.434
N.A.
1.782
N.A.
2.970
N.A.
0.723


HEATING
0.000
0
0.000
0.000
0.000
N. A.
0.000
N.A.
0.000


COOLING
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N A.
N.A,
N.A.


SYSTEM TOTAL
1.700 GIGA JOULES
21 PERCENT
0.434 GIGA JOULES
0.122 GIGA JOULES
1.782 GIGA JOULES
h.A. GIGA JOULES
2.970 GIGA JOLLES
-0.122 GIGA JOULES
0 723 GIGA JOULES


SYSTEM PERFORMANCE FACTOR:


0.504


* DENOTFS UNAVAILABLE DATA
S DENOTES NULL DATA
N.A. DENOTES NOT APPLICABLE DATA

REFERENCE: USER'S GUIDE TO THE MONTHLY FERFCRMANCE REPORT
OF THE NATIONAL SOLAR DATA PROGRAMEFEBRUARY 28,1978,
SOLAR/0004-7P/18


j






SOLAR HEATING AND COOLING DEMONSTRATION PROGRAM

MONTHLY REPORT
ENERGY COLLECTION AND STORAGE SUBSYSTEM (ECSS)


SITE: COLORADO SUNWCRKS
REPORT PERIOD: JUNE,1979


LONGMONT. COLCRADO


SCLAR/10 51-79/06


-------I---------


DAY
OF
MONTH


1
2
3
4
5
6
7
8
9
10
to
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

SUM

AVG

NBS 10


INCI DENT I
SOLAR
ENERGY
MILL ION
BT U

0.228
0.235
0.239
0. 235
0.233
0. 217
0.011
0.041
0. 169
0.199
0. 206
0.208
0.218
0.204
0.164
0.185
0.202
0.179
0.185
0.205

0.216

0.206
0.211

0.224
0. 232
0. 199
0.194
--------I
5.831

0. 194

0001


AMBIENT
TEMP

DEG-F

52
60
66
70
71
68
50
44
49
58
67
73
74
73
68
65
64
64
59
67

72

71
73

75
73
74
72


66

N113


N.A.


AUX
THERMAL
TO ECSS
MILLION
BTU

N
0
T

A
P

L
I
C
A
B
L
E


ENERGY
TO
LOADS
MILLION
BTU

N
0
T

A
P
P
L
I
C
A
B
L
E















N.A.


N.A.


-----------1------------


ECSS
OPERATING
ENERGY
MILLION
BTU

0.004
0.006
0.004
0.004
0.004
0.005
0.004
0.003
0.003
0.004
0.003
0.004
0.004
0.003
00003
0.002
0.003
0.003
0.004
0.005
0.004
*
0.005

0.003
0.002

0.005
0.004
0.006
0.004

0.116


0.004


0102


ECSS
ENERGY
REJECTED
MILLION
BTU


N.A.

N.A.


ECSS SOLAR
CONVERSION
EFFICIENCY


0.0 19
0.070
0.081
0.086
0.099
0.072
1.194
0.097
0.049
0.079
0.101
0.059
0.058
0.058
0.048
0.040
0.055
0.137
0.037
0.040

0.095

0.128
0.044

0.057
0.071
0.065
0.039


0.070
--N111--
/-------------I


* DENOTES UNAVAILABLE DATA.
8 DENOTES NULL DATA.
N.A. DENOTES NOT APPLICABLE DATA.


N.A.






SOLAR HEATING AND COOLING DEMONSTRATION PROGRAM


MONTHLY REPORT
COLLECTOR ARRAY PERFORMANCE


SITE: COLORADO SUNWORKS
REPORT PERIOD: JUNE,1979


LCNGMONT, COLCRACO


SOLAR/1051-79/06


DAY
OF
MONTH


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

SUM

AVG

NBSI D


INCIDENT
SOLAR
ENERGY
MILLION
BTU

0.228
0.235
0.239
0.235
0.233
0.217
0.011
0.041
0.169
0.199
0.206
0.208
0.218
0.204
0.164
0.185
0.202
0.179
0.185
0.205

0.216

0.206
0.211

0.224
0.232
0.199
0.194

5.831
0.194

0001


------------I
OPERATIONAL
INCIDENT
ENERGY
MILLION
BTU

0.158
0.160
0.181
0.196
0.193
0.169
0. 014
0.021
0.117
0.151
0.077
0.155
0.156
0.170
0.124
0.165
0.182
0.161
0.143
0.169
*
0.195

0.180
0.187

0.175
0.209
0.151
0.130

4.541

0.151
-----------~


COLLECTED
SOLAR
ENERGY
MILLION
BTU

N
C
T

A
P
P
L
I
C
A
B
L
E















N.A.


N.A. 77
Ii----- -- --------


I Q100


DAYTIME
AMBIENT
TEMP
DEG F


63
71
80
83
85
81
52
49
53
69
80
86
93
87
81
76
74
72
64
79
4
84
*
84
88

82
89
87
88


* DENOTES UNAVAILABLE DATA.
8 DENOTES NULL DATA.
N.A. DENOTES NOT APPLICABLE DATA.


-A


COLLECTOR
ARRAY
EFFICIENCY


N
C.
T

A
P
P
L
I
C
A
E
L
E

















N.A.

N100


I





SOLAR HEATING AND COOLING DEMONSTRATICK PROGRAM


MONTHLY REPORT
HOT WATER SUBSYSTEM


SITF: COLORADO SUNWORKS
REPORT PERIOD: JUNE,1979


LONGMONT, COLORADO


SOLAR/1051-79/06


DAY
OF
MON.


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

SUM

AVG

NBS


HOT
WATER
LOAD
MILLION
BTU

0.025
0.052
0.063
0.065
0.065
0.056
0.068
0.045
0.049
0.050
0.087
0. 034
0.035
0.037
0.093
0.028
0.037
0.116
0.035
0.033

0.047

0. 093
0.035
*
0.050
0.043
0.090
0.020

1.612

0.054

0302


SOLA R
FR .OF
LO AD
P ER
CE NT

39
23
22
25
29
24
22
10
121
20
22
23
24
24
121
11
21
21
16
16

261

26
19
*
21
24
18i
17

-- -
21

N30 0


SOLAR
ENERGY
USED
MILLION
BTU

0.004
0.016
0.019
0.020
0.023
0.016
0.013
0.004
0.008
0.016
0.021
0.012
0.013
0.012
0.008
0.007
0.011
0.024
0.007
0.008

0.021

0.026
0.009

0.013
0.016
0.013
0.007

0.411

0.014

0300


OPER
ENERGY

MILLION
BTU

N
0
T

A
P
P
L
I
C
A
B
L
E

















N.A.
Q303


AUX
THERMAL
USED
MILLION
BTU

0.039
0.059
0.061
0.066
0.065
0.051
0. 069
0.056
0.060
0.047
0.078
0.040
0.040
0.043
0.101
0.040
0.039
0. 102
0.040
0.039
*
0.042

0.077
0.066

0.050
0.037
0.088
0.025

1.689

0.056

Q301


AUX
ELECT
FUEL
MILLION
BTU

N
0
T

A
P
P
L
I
C
A
8
L
E















N.A.

N.A.

0305


AUX
FOSSIL
FUEL
MILLION
BTU

0.065
0.098
0.102
0.110
0.108
0.084
0.114
0.094
0.099
0.079i
0.130
0.066
0.067
0.071
0.168
0.067
0.066
0.170
0.067
0.066

0.070

0.128
0.110

0.083
0.062
0.146
0.042

2.815

0.094

0306


ELECT
ENERGY
SAVINGS
MILLION
BTU

N
0
T

A
P
P
L
I
C
A
8
L
E















N.A.

N.A.

Q311


FCSSIL.
ENERGY
SAVINGS
MILLI CN
BTU

0. 007
0. 027
0.032
0. 034
0. 038
0.026
0. 022
0.007
0.014
0. 026
0.035
0. 021
0.021
0.020
0. 013
0.012
0. 016
0.041
0.011
0.014

0.034

0. 044
C.015

0. 021
0. C27
0.022
0.012

0.685

0. 023

(31 3


SUP.
WAT.
TEMP
DEG
F

54
53
53
53
53
53
54
54
54
54
54
54
54
54
54
54
55
55
55
55

55
*
56
56
*
56
57
57
57


55

N305


---Io
HOT
WAT.
TEMP
DEG
F

133
133
133
134
132
132
130
132
135
135
126
127
134
129
132
1341
1221
131
132
132

12e

132
134
*
123
129
129
121


131


N307) N308


* DENOTES UNAVAILABLE DATA.
8 DENOTES NULL DATA.
N.A. DENOTES NCT APPLICABLE DATA.


HOT
WATER
USED

GAL

52
76
105
97
102
85
118
71
72
74
141
51
53
71
164
42
79
179
56
53

81
*
145
60
*
93
73
146
34

2637

Se








SOLAR HEATING AND COOLING DEMONSTRATION PROGRAM


MONTHLY REPORT
SPACE HEATING SUBSYSTEM


SITE: COLORADO SUNWORKS
REPORT PERIOD: JUNE-1979


LONGMONT, COLORADO


SCLAP/1051-79/06


DAY
OF
MON.


--I
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

SUM

AVG

NBS


SPACE
HEATING
LOAD
MILLION
BTU

0.000
0 000
0.000!
0.000
0. 000
0.000
0.000
0.000
0.000
0.000
0.000
0 000
0.000
0.000
0.000
0.000
0 000
0.000
0. 000
0.000
0.000
0.000

*
0.000
0.000

0.000
0.0001
0.000

0.000
0.000

0402


SOLA R
FR.OF
LOAD
PC T

0
0
0
0
0
0
0
0
0
0
0o
0
0
0
0
0
0
0
0
0
*
0
*
0
0
*1
0
0
0
0


-- I
0

N4 00


SOLAR
ENERGY
USED
MILLION
BTU

0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.0000
0.000
0.000
0.000
0.000
0.000
0.000

0.000
*
0.000
0.000
*
0.000
0.000
0.000
0.000
0.000
0.000

0400
0,000

0400


OPEP
ENERGY

MILLION
BTU

0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

0.000

0.000
0.000

0.000
0.000
0.000
0.000

0.000

0.000

0403


AUX
THERMAL
USED
MILLION
BTU

0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0,000
0.000

0.000
*

0.000
0.000
*

0.000
0.000
0.000
0.000

0.000

0.000

0401


AUX
ELECT
FUEL
MILLION
BTU

N
01
T
A
P
P
L
I
C
A
B
L
E















N.A.

N.A.


AUX
FOSSIL
FUEL
MILLION
BTU

0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0o000
0.000
0.000
0.000

0.000

0.000
0410


ELECT
ENERGY
SAVINGS
MILLION
BTU

Ni
0
T

A
P
P
L
I
C
A
P
L
E















N.A.

N.A.

Q415


* DENOTES UNAVAILABLE DATA.
@ DENOTES NULL DATA.
N.A. DENOTES NCT APPLICABLE DATA.


FOSSIL
ENERGY
SAVINGS
MILLION
BTU

0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
*
0.000

0.000
0.000
*
0.000
0.000
0.000
0.000

0.000
0.000

0417


BLDC
TEMP

CEG.
F

71
72
73
72
75
75
74
72
71
71
72
74
75
74
74
74
74
74
74
72

7C-
75
74
*




7f
7e
76
75


74

h406


AME
TEMP

DEG.
F

52
60
66
70
71
68
50
44
49
58
67
73
74
73
68
65
64
64
59
67
*
72

71
73
*
75
73
74
72


66

N1 13




SOLAR HEATING AND COOLING DEMCNSTRATICN PROGRAM

MONTHLY REPORT
ENVIRONMENTAL SUMMARY


SITE: COLORADO SUNWORKS LONGMO
REPORT PERIOD: JUNEI979

DAY TOTAL DIFFUSE
OF INSOLATION IATIONNSOTION TI
MONTH
BTU/SQ.FT BTU/SQ.FT

1 762 N
2 783 0
3 797 T
4 785
5 776 A
6 724 P
7 37 P
8 138 L
9 564 I
10 662 C
11 689 A
12 695 8
13 727 L
14 682 c
15 549
16 617
17 674
18 596
19 61
20 686
21 *
22 720
23 *
24 689
25 705
26 *
27 748
28 775
29 666
30 646

SUM 19454 N.A.

AVG 648 N.A.

NBS ID Q001


* DENOTES UNAVAILABLE DATA.
8 DENOTES NULL DATA.
N.A. DENOTES NOT APPLICABLE DATA.


NT, COLORADO


AMBIENT
TEMPERATURE

DEG F

52
60
66
70
71
68
50
44
49
58
67
73
74
73
68
65
64
64
59
67
*
72
*
71
73
*
75
73
74
72
----------1


66

N113


SOLAR/1051-79/06


DAYTIME
AMBIENT
TEMP
DEG F

63
71
80
83
85
81
52
49
53
69
80
86
93
87
81
76
74
72
64
79
*
84
*
84
88
*
82
89
87
88


77


RELATIVE
HUMIDITY

PERCENT

68
56
47
39
42
52
89
98
83
66
59
52
51
39
63
72
80
69
46
36
*
42
*
56
50
*
54
59
53
53


58


SIND
DIRECTION

DEGREES


57
0
0
0
95
127
105
62
155
0
0
194
258
91
78
119
39
297
132

68

51
*

67
64
33
130


75

N115


bIfND
SPEED

M.P.H,

5
2
2
2
2
8
4
6
6
2
2
1
2
4
4
5
7
9
12
6

5

2
7
*
4
4
3
6


4

N114









SOLAR HEATING AND CCCLING DEMONSTRATION PRCGRAV


MONTHLY REPORT
PASSIVE SPACE HEATING


SITE: COLORADO SUNWORKS
REPORT PERIOD: JUNE 1979


LONGMONT, COLORADO


SOLAR/1051-79/06


r)AY
OF
MON


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

SUM
AVG

NBS


SPACE
HEATING
LOAD
MILLION
BTU

0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0 000
0.000
0.000
0.000
0.000
0.000
0.000
0 00C
0.000
0. 000
0.000
0.000
0.000
*0
0.00C
0.000
*
0.000'
0.000
0.000
0.000

0.000

0.000
0402


SOLAR
ENERGY
USED
MI LL ION
BTU

0. 000
0.000
0. 000
0. 000
0. 000
0.000
0.000
0. 000
0. 000
0. 000
0. 000
0.000
0. 000
0. 000
0. 000
0. 000
0. 000
0. 000
0. 000
0. 000
0. 000
0. 000

0. 000
*
0. 000
0.000
0. 000
0. 000
0. 000

0. 000

0Q00
0400


CHANGE
IN STORE
ENERGY
MILL ION
BTU

0.008
0.004
0.016
0.021
0*020
0.012
-0 057
-0.045
-0.0181
-0. 002
0.021
0.028
0.020
-0.007
-0.007
0.020
-0. 003
-0. 007
0 002
0 009
0.010
0.011
*1
-0.015
0.001
*
0.0001
0.007
0.001
-0.011

0.042

0.001
0202


AVERAGE
STORAGE
TEMP
DEG F

72.8
73.1
73.8
74.4
75.3
75.8
75.2
73.3
71.9
71.2
71.6
72.4
73.5
73.9
73.6
73.8
74.0
73.6
73.8
73.91
*
74.8
*1
75.0'
74.51
*
75.6
75.7
75.9
75.6


74.0


DIRECT
SCLAF
UNTIL
EFFIC

0.019
0.070
0.081
0.086
0.099
0.0721
1.194
0.097
0.049
0.079
0.101
0.059
0.058
0.058
0.048
0.040
0.055
0.1371
0.037
0.040
1
0.095

0.128
0.0441
*
0.057
0.071
0.065
0.039


i0070
0.070


* DENOTES UNAVAIL
% rENO'rS NULL DA
N.A. rOEN'TF S NrT


ABLF DATA.
TA .
APPLICABLE DATA.


AUX
THERMAL
USED
MILLION
BTU

0.0001
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000!
0.000
0. 000
0.0001
0.000
0.000
0.000
0.0001
0.000
0.000
0.0001
0.000
*1
0.000
*
0.000
0.000
*000
0.000
0.000
0.000
0.000




0401


BLDG
TEMP

DEC
F

71
72
73
73
75
75
741
72
71
71
72
74
75
74
74
74
74
74
74
75
*1
76
*
75
74
76
76
76
76'
75


74

N4051


AMB
TEMP

DEG
F

52
60
66
70
71
68
50
44
49
58
67
73
74
73
68
65
64
64
59
67
*
72
*
71
73

75
73
74
72


66

N113


WIND
AVG
SPEED
MPH

4.8
2.1
1.8
1.7
1.7
7.7
3.7
6.0
5.8
2.3
1.8
1.4
2.4
4.4
4.2
5. 1
7.1
9. 1
11.7
5.5
*
4.8

2.4
e.7l

4.5
3.5
..4!
5.8

-
4.5

N114


I NDO
AVG
DIP
DEG


57
0
0
0
95
127
105
62
155
0
0
194
25e
91
78
119
39
297
132
*
68'

*1

67'
64
331
130


75

1l15


SCLA
FR
LCAO
PEP
CENT

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
*
0
*
0
0
0
0
0

0

0

N400





SOLAR HEATING AID CYCLING DEMONSTRATION PROGRAM

MONTHLY REPORT
PASSIVE SYSTEM ENVIRONMENT


SITE: COLORADO SUNWORKS
REPORT PERIOD: JUNE*1979


LONGMONT, COLORADO


SCLAR/1051-79/06


DAY
OF
MON



1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

SUM

AVG

NBS


BUILDING
COMFORT
ZONE
1


72
73
73
74
75
76
74
72
71
71
72
73
74
74
74
74
74
74
74
74

75

75
75
*
76
76
76
76



74


RL3 G
COMF
ZONE
2


71
721
72
72
73
74
74
72
71
71
72
73
74
73
73
74
74
73
74
74

75
*
74
74
*
76
75
75
75



73


BUILDING
TEMP
MIDNIGHT
DEG F


71
73
73
74
75
76
72
71
70
72
73
74
72
71
72
74
72
74
74
73
76
75
74
73
75
75
75
75
75
74



73


BUILDING
TEMP
6 AM
DEG F


69
70
71
70
72
72
74
72
70
68
70
711
73
71
71
72
72
71
72
73
71
74
*
72
70
*
74
72
73
72



72


BUILDING
TEMP
NOON
DEG F


71
73
74
74
75
76
74
72
71
71
73
74
75
76
75
76
76
74
74
75
76
77
76
76
76
*
77
77
77
77



75


BUILDING
TEMP
6 PM
DEG F


73
75
75
76
77
78
731
72'
721
73
74
761
77
77
76
77
76
76
75;
77

78
77
78
77

79
80
801
78



76


INTERIOR
RELATIVE
HUMIDITY
PERCENT


45
44
43
38
40
38
43
43
44
46
49
51
50
43
46
50
50
51
45
43

43

46
48
*
48
47
46
44



45


AME
TEMP
DEG
F


52
60
66
70
71
68
50
44
49
58
f7
73
74
731
68
65
64
64
59
67
*
72
*
71
73
*
75
73
74
72




N112
N11?


DAYTIME
AM E
TEM P
DEG F


63
71
80
83
85
81
52
49
53
69
80
b6
93
87
81
76
74
72
64
79
*4
84

84
88
*
82
89
87
88



77


INCIDENT
SOLAR
ENERGY
MILLION
BTU

0.228
0.235'
0.217
0:223

0.011
0:218

0.169
0.199
0:206
0.208
0.218
0.204
0.1647


0.1 7E
0.202
00179
0.185


0.216
*
0.206
0.211
*
0.224
0.222
0.1 99
0.194

5.831

0.194


* DENOTES UNAVAILABLE DATA.
@ DENOTES NULL DATA.
N1.. DENOTES NOT APPLICAeLE DATA.


AVG
STORE
TEMP
DEG
F

73
73
74
74
75
76
75
73
72
71
72
72
74
74
74
74
74
74
74
741
*
75
74
75
74
*
76
76
76
76

------
74


.~




















IC














h'

Hl:
















ri






UNIVERSITY OF FLORIDA


3 1262 09052 4843


ii




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