Monthly performance report

- 1 JALr& L


/1 -~


SOLAR/1025-79/03

Monthly

Performance

Report


HELIO THERMICS, INC. LOT 6
MARCH 1979


U.S. Department of Energy

National Solar Heating and
Cooling Demonstration Program


National Solar Data Program


S-


/


____ ~ ~ ~


I ..._,,,,,,,,,._,,, .. ..~~, ..~.._....... ._,,,,,~,~ _~,,~,~









































NOTICE
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


HELIO-THERMICS, INC.
HOUSE LOT 6

MARCH 1979


I. SYSTEM DESCRIPTION

Helio-Thermics Inc., House Lot 6 is one of two instrumented single-family
residences in Greenville, South Carolina. The home has approximately 1086
square feet of conditioned space. Solar energy is used for space heating the
home and preheating domestic hot water (DHW). The solar energy system utilizes
the attic space as the solar energy collector. The attic roof faces 10 degrees
west of south and is pitched at an angle of 51 degrees from the horizontal.
Solar energy enters the attic through a 416-square-foot aperture which is
double-glazed with corrugated, translucent, fiberglass-reinforced, acrylic
panels. The interior of the attic is painted black to maximize the absorption
of solar energy. Warm air accumulates in the peak of the attic roof and
circulates through the conditioned space or through storage by an air handler.
Solar energy is stored in an 870-cubic-foot storage bin containing 85,460
pounds of crushed rock. The bin is located under the house and is insulated
with 2-inch polystyrene insulation. Cold water is preheated in the attic by
thermosiphoning water from the 80-gallon preheat tank through a manifold
system of copper tubes. These tubes are attached to black sheet-metal plates,
thus enhancing absorption of solar radiation for preheating the water as it
circulates to and from the preheat tank. Preheated city water is stored in
the preheat tank and supplied, on demand, to a conventional 80-gallon DHW
tank. When solar energy is insufficient to satisfy the space heating load, a
water-to-air heat exchanger in the hot air supply-duct provides auxiliary
energy for space heating. A gas-fired water heater provides auxiliary energy
for the water-to-air heat exchanger and DHW. The system, shown schematically
in Figure 1, has seven modes of operation.

Mode 1 Collector-to-Storage: This mode activates when there is no demand
for space heating and the collector supply-duct temperature is 260F higher
than the storage temperature. This mode terminates when the temperature
difference between the collector and storage is less than 160F.

Mode 2 Storage-to-Space Heating: This mode activates when space heating is
required (but is not available from the collector) and the storage tempera-
ture exceeds the building ambient temperature by 5F. This mode terminates
when the building ambient temperature equals the storage temperature or when
space heating is no longer required.

Mode 3 Collector-to-Space Heating: This mode activates when space heating
is required and the collector supply-duct air temperature is 10O higher than
the building ambient air temperature. This mode terminates when the tempera-
ture difference drops to less than 6F or the space heating requirement is
satisfied.







* 1001 COLLECTOR PLANE TOTAL INSOLATION
V T001 OUTDOOR TEMPERATURE


Figure 1. HELIO THERM/CS, INC., LOT NO. 6, SOLAR ENERGY SYSTEM SCHEMATIC


:::. ,,iig i;








Mode 4 Auxiliary Energy-to-Space Heating: This mode activates when space
heating is required and thermal energy is not available from the collectors
or storage. An electrical heating element in the hot air supply-duct remains
on until the space heating demand is satisfied.

Mode 5 Summer Mode, Passive Cooling Storage: This mode can be activated
when the residents wish to store cool air in storage for circulation the next
day. The air-handler fan activates and an outside air-intake damper opens to
allow the cool air to circulate through the attic and storage.

Mode 6 Summer Mode, Space Cooling: This mode can be activated when cool
air from storage is desired in the living area. The outside air-intake
damper closes, the duct to the living area opens, and the air-handler fan
activates.

Mode 7 DHW Preheating: This mode activates when there is a demand for hot
water. Water is drawn from the conventional DHW tank and replenished with
heated water from the preheat tank. The DHW subsystem has this one independent
mode of operation for preheating.


II. PERFORMANCE EVALUATION


INTRODUCTION

The site was occupied in March and the solar energy system operated contin-
uously for 31 days during the month. Solar energy satisfied 75 percent of the
space heating requirements. The solar energy system provided fossil fuel
energy savings of 0.68 million Btu.

To prevent the possibility of water freezing in the thermosiphoning subsystem,
this solar energy system component (located in the attic) has been drained
until all danger of freezing has past.


WEATHER CONDITIONS

During the month, total incident solar energy on the collector array was 20.1
million Btu for a daily average of 1560 Btu per square foot. This was above
the estimated average daily solar radiation for this geographical area during
March of 1476 Btu per square foot for a south-facing plane with a tilt of 51
degrees to the horizontal. The average ambient temperature during March was
52F a compared with the long-term average for March of 510F. The number of
heating degree-days for the month (based on a 65F reference) was 394, as
compared with the long-term average of 450.

THERMAL PERFORMANCE

Collector The total incident solar radiation on the collector array for the
month of March was 20.1 million Btu. During the period the collector loop







was operating the total insolation amounted to 16.3 million Btu. The total
collected solar energy for the month of March was 4.1 million Btu, resulting
in a collector array efficiency of 21 percent, based on total incident insola-
tion. Solar energy delivered from the collector array to storage was 3.0 mil-
lion Btu, while solar energy delivered from the collector array directly to the
loads amounted to approximately 0.05 million Btu. Energy loss during transfer
from the collector array to storage and loads was approximately 1.1 million
Btu. This loss represented 27 percent of the energy collected. Operating
energy required by the collector loop was 0.37 million Btu.

Storage Solar energy delivered to storage was 3.0 million Btu. There were
0.36 million Btu delivered from storage to the space heating subsystems. Energy
loss from storage was 2.4 million Btu. This loss represented 80 percent of
the energy delivered to storage. This "lost" thermal energy is probably entering
the living area and contributing to the lower-than-average space heating load.
The predicted space heating load was 3.0 million Btu based upon actual ambient
temperatures, considerably higher than the actual load of 0.55 million Btu. The
storage efficiency was 20 percent: This is calculated as the ratio of the sum
of the energy removed from storage and the change in stored energy, to the
energy delivered to storage. The average storage temperature for the month was
820F.

DHW Load There was no solar energy contribution to the DHW load of 1.7
million Btu because the thermosiphoning subsystem had been drained. A daily
average of 66 gallons of DHW was consumed at an average temperature of 155F
delivered from the tank.

Space Heating Load The space heating subsystem consumed 0.41 million Btu of
solar energy and at least 0.14 million Btu of auxiliary thermal energy (equiva-
lent to 0.23 million Btu of auxiliary fossil fuel energy) to satisfy a space
heating load of 0.55 million Btu. The solar fraction of this load was 75 per-
cent. The space heating subsystem consumed a total of 0.22 million Btu of
operating energy, to distribute both solar energy and auxiliary thermal energy.

OBSERVATIONS

The gas flow totalizer used to quantify the gas consumption is not providing
valid data. The measurement of auxiliary thermal energy consumption in the DHW
subsystem will not be available until this problem is corrected.

ENERGY SAVINGS

The solar energy system provided a total fossil fuel energy savings of 0.68
million Btu.

III. ACTION STATUS

Boeing will schedule a site visit in the near future to correct the erroneous
gas totalizer data readings.


























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SCLAR EATING ANC COOLING DEMChSTRATICN PROGRAM


NChTHLY REPORT
SITE SUMMARY


SITE: HELICTHERMICS, INC. LCT 6. GREENVILLE, SC
REPCRT PERIOD: NARChlTS7S


SOLAR/1025-79/03


SITE/SYSTEM DESCRIPTION:
THE HELIGTHERMICS SCLAR ENERGY SYSTEM PROVIDES SPACE HEATING AND DOMES-
TIC HCT hATER PREHEATING. IN THE SPACE HEATING SUBSYSTEM, ThERMAL ENERGY
IS TRANSFERRED EY AIR CIRCULATION FRCM THE ATTIC TO THE LOAD CR TC
CRUSHED RCCK IN AN IhSULATEC CONCRETE EIN. IN THE DOMESTIC HOT WATER
SUBSYSTEM. SOLAR ENERGY IS COLLECTED FROM A 70 SC. FT ALUMINUM AND
COPPER PACOLE IN THE ATTIC AhC TRANSFERRED TO AN 80 GAL. PREHEAT TANK BY
THERMCSIPHONING. AUXILIARY ENERGY IS PROVIDED TC BOTH SUBSYSTEMS EY A
CCMMCh NATURAL GAS HATER HEATER.

GENERAL SITE DATA:
INCIDENT SOLAR ENERGY 21.231


COLLECTED SOLAR ENERGY
AVERAGE AMBIENT TEMPERATURE
AVERAGE ELILCING TENFERATLRE
ECSS SOLAR CONVERSION EFFICIENCY
ECSS OPERATING ENERGY
TOTAL SYSTEM OPERATING ENERGY
TOTAL ENERGY CCNSLNEC


SUBSYSTEM SUMMARY:

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


I-CT hATER
1,7E7
1.787
4
0.000
*
N.A.

Ne.A
0.000


EATING
0.578
75
0.431

0.147
N.A.
0.246
-C.164
0.718


COOLING
NbA.
N.A.
h.A.
heAe
N.A.
NoA.
N.A.
NeA.
N.A.


GIGA JOIULES


549347 KJ/SQ.M.
4.375 GIGA JOULES
113214 KJ/SQ.M.
11 DEGREES C
22 DEGREES C
0.02
0.386 GIGA JOULES
0.622 GIGA JOULES
GIGA JOULES

SYSTEM TOTAL
2.365 GIGA JOULES
PERCENT
0.431 GIGA JOULES
0.622 GIGA JOULES
GIGA JOULES
N.A. GIGA JOULES
GIGA JOULES
-0.550 GIGA JOULES
0.718 GIGA JOULES


SYSTEM PERFORMANCE FACTOR:


* DENCTES LNAVAILABLE CATA
DENOTES NLLL DATA
NeA. DENCTES NCT APPLICABLE CATA
REFERENCE: USER'S GUIDE TO ThE NCNTHLY FERFCRNANCE REPORT
OF THE NATIONAL SCLAS CATA FRCGRAM.FfeRUARY 28.1978.
SCLAR/0004-7e/1l






SCLAR HEATING AhC CCCLING DEMCNSTRATIGN PROGRAM

MONT-LY REPORT
ENERGY CCLLECTICh AhN STORAGE SUBSYSTEM (ECSS)


SCLAR/1025-79/03


SITE: HELICThESMICS, INC. LCT to GREENVILLE. SC
REPORT PERIOD: MARCH,1tS7


DAY
CF
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
31

SUm

AVG

NBS ID


INCIDENT
SCLAR
ENERGY
MILLION
BTL

0.332
0.671
0.092
C.062
0.804
C.76C
0.803
0.603
C. 919
0.409

0.982
0 E3C
0.651
0 966
0.947
C .S26
0.819
0.776
0.749
0.2C 5

C.105
0.518
0.545

0.613
C. E35
C.610
C.583
0.586

20.124

C.645

C001
- -
c a 0


ANEIENT
TEMP

CEG-F

46
51
54
62
61
49
48
48
4a
51
44
44
52
56
43
40
46
56
60
66
S61
SE
56
49
39
40
52
55
60
63
ee


52

N113


ENERCY
TO
LCADS
MILLICK
ETU

C 023
C.014
C 007
0.006
0.002
0.005
C .027
0.011
C.C22
S0000
0.032
C.C35
0.017
0.002
0,024
0.027
0.025
0.000
C 000
C 000
0.000
CCCC
0.000
0.015
0.038
0.028
0.021
0.005
0.00C
0.000
C.000

C.40E

0.013


AUX
THERMAL
TC ECSS
MILLION
BTU

N
C
T

A
P
P
L
I
C
A

L
E
















o.A.

--A.-


ECSS
OPERATING
ENERGY
MILLION
BTU

0.007
0.013
0.000
0.000
0.014
0.014
0.014
0.013
0.017
0.008
0.014
0.016
0.016
0.011
0.016
0.016
0.015
0.017
0.016
0.017
0.005
0.007
0.000
0.005
0.004
0.014
0.015
0.017
0.013
0.016
0.014

0.366

0.012

G102


* DENOTES LhAVAILABLE CATA.
i DENCTES NULL CATA.
N.A. DENCTES NCT APPLICAELE CATA.


ECSS
ENERGY
REJECTED
MILLION
BTU

N
0
T

A
P
P
L
I
C
A
B
E

















N.A.
)uoLI0

No~o


ECSS SOLAR
CONVERSION
EFFICIENCY


0.070
0.020
0.073
0.091
0.003
0.012
0.033
0.018
0.035
0.019
0.032
0.035
0.020
00003
0.025
0.029
0.027
0.000
0.000
0.000
0.000
0.000
0.000
0.029
0.069
0.030
0.034
00003
0.006
0.000
0.000
0.000

e a
0.020

NIll


----------




SCLAR HEATING AhC CCCLING DEMONSTRATION PROGRAM


MONTHLY REPORT
COLLECTOR ARRAY PERFORMANCE


SITE: HELICTHERMICS, INC. LCT 6. GREENVILLE, SC
REFCRT PERICC: MAECI 1579


SCLAR/1025-79/03


CAY
CF
MCNTH


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
31
SUM
AVG
NESIO


INCIDENT
SCLAR
ENERGY
WILLICh
STU

0.332
0.671
0.092
0.062
0.804
0.760
0.803
0.603
0.919
C.409
0.995
0.982
0.830
0.651
0.966
0.947
0.926
0.819
0.776
0.749
0.295
0.375
0.109
0.518
0.545
0.S56
0.613
C.635
0.610
0.583
0.586
20.124
0.649
0001


OPERATIONAL
IhCICENT
EhERGY
NILLICh
BTL

0.239
0.583
C.00
C0000
0.716
0.695
0.706
0.483
0.875
0.213
0.867
0.872
0.714
0.549
0.828
0.796
0.792
0.734
0. 65
0.667
0.153
0.262
0.000
C.210
0.200
0.824
0.509
C0723
0.489
0.483
16.314
0.526
---.--


COLLECTED
SCLAR
ENERGY
MILLION
BTL

0.044
0.175
0.000
0.000
0.156
0.185
0*179
0.099
0.221
C.C4S
0.145
0.235
0.198
0.129
0.190
0.181
0.194
0.238
0*2319
0.196
0.217
0.042
0.062
0.000
0.017
0.020
0.193
0.157
0.224
0.148
0.137
0.117
4.147
0.134
G100


DAYTIME
AMBIENT
TEMP
DEC F

51
61
58
64
68
58
62
55
4
62
51
60
66
63
54
50
64
72
74
76
68
62
59
51
44
52
66
63
70
72
74


62


COLLECTOR
ARRAY
EFFICIENCY


0.132
0.260
0.002
0.000
0.194
0.243
0.223
0.165
0.241
0.119
0.146
0.239
0.239
0.197
0.197
0.191
0.210
0.291
0.253
0.290
0.144
0.164
0.000
0.033
0.037
0.201
0.256
0.268
0.243
0.235
0.199


0.206
N100


* DENOTES UNAVAILABLE DATA.
OENCTES NULL CATA.
NeA. DENOTES NCT APPLICABLE DATA.






SOLAR -EATING AND CCCLIhG CENChSTRATION PROGRAM


MChTHLY REPORT
STCFAGE PERFORMANCE


SITE: HELICThERMICS, IhC LCT 6. GREENVILLE, SC
REPCRT PERICC=: AFC *1979


SGLAR/1025-79/03


DAY
OF
MCNTH


1
2
4
1 I
6
7
8
S I
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29S
30
31


AVG

NES IC


EhERCY
TC
STCRAGE
MILLICh
BTU

0.038
0.128
0.00 CC
0.000
C.122
0.134
0.1322
0 083
0.15';
0.C40
0.105
C.162
0.145
0. CS7
0.141
0.133
0.140
0.168
0.142
0.155
0.030
0.044
C .000
0.017
0.013
0 129
S 0.114
0 .155
0.106
0.104

2.024

0.098

C200


EhEIGY
FRCM
STORAGE
PILLICh
BTU

C.C23
0.013

0.004
-C.CCE
0.008
C.C23
0*011
0.027
0.006
0.025
0.032
0.017
0,CC2
C CC2
0.024
C.C27
G.025
C.000
C.OCC
0.000
0.0C0
C. 000CO
0.000
0.015
C.C36
0.015
0.020
C CC4
0.000
0.000
o .ooc
0 OOC

0.342
0*012

C201


CHANGE
IN STCREO
ENERGY
PILLICK
BTU

-C 120
0.067
-0.071
-0.050
0.128
0.145
0.00e
0.019
-0.002
-0.013
-0.078
0.074
0.101
0.002
-0.015
-0.013
0.006
0.114
0.053
0.025
-0.070
-0.078
-0 093
-0.10
-0.160
0.107
0.112
0.114
0.046
-0.011
-0.002

0.244

.00oe

0202


STORAGE
AVERAGE
TEMP
OEG F

71
68
71
67
69
76
79
83
81
83
78
77
84
88
87
86
86
91
96
98
97
93
88
83
73
70
77
84
90
91
91


82


STORAGE
EFFICIENCY



-2.571
0.632
1.000
1.000
1.014
1.141
0 240
0.358
0.160
-0.121
-0.502
0.656
0.816
0.042
0.069
0.107
0.242
0.680
0.373
0.164
-2.295
-1.778
1.000
-5.380
-9.254
0.946
1.149
0.761
0.440
-0.102
-0,023


0.200

Nice


* DENOTES AVAILABLE DATA.
e OEhCTES hLLL CAIA.
N.A. DENGTES NOT APFLICABLE DATA.





SOLAR HEATING AND CYCLING DENChSTRATION PROGRAM


ChTI-LY REPORT
HOT MATER SUBSYSTEM


SITE: HELICTHERMICS, INC. LCT 6, GREEhVILLE, SC
REPORT PERIOD: MARCH,1979


SOLAR/1025-79/03


DAY
CF
MON.


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1I
20
21
22
23
24
25
26
27
28
29
30
31
SUM

AVG
NBS


HOT
WATER
LOAD
MILLICN
BTU

0.066
0.0241
0.073
0.043
0.072
0.058
0.079
0.101
0.057

0.0961
0.085
0.042
0.055
0.053
0.126
0.078
0*064

0.026
0.02e
0.063
0.000
0.029
0.034
0.022
0.038
008808
0.021
0.005
0.021
1.693
0.055
0302


SOLAR
FR.OF
LCAD
.PER
CENT





*
*


*
*

*








*


CPER
ENERGY

MILLICh
ET


TI

F


-- I
SOLAR
ENERGY
USED
MILLION
BTI

0.000
0.000
0.000
0.000
0.0001
0.000
0.0001
0.000
0000C
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
0o000o
0.000
0.000O
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0300
0300


AUX
THERMAL
USED
NILLICN
ETU


*
I



























C301
*)




*)





*t
*l

*30


AUX
ELECT
FUEL
MILLION
ETU

C
Ti
A
F
P
L
I
CI
A
E
L
El















N.A.

C.A.
C305


AUX
FOSSIL
FUEL
MILLION
ETU


*,
*i

*1
*












;e


0306


ELECT
ENERGY
SAVINGS
MILLION
BTU
N
C
T
A
P
P
L
I
C
A
8
L
E


N.A.
NeA,
N.A.
0311


FOSSIL
EhERGY
SAVINGS
MILLION
BTU

0.000
0.000
0.000
0.000
0.000
0.00
0.000i
0.000
0.000
0.000
0.000
0.000
0.000
0.0001
0.000
0.0000

00000
0.000
0.0000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0 000

0.000
01000
0.000
0313


* DENOTES UNAVAILABLE DATA.
A DENCTES NULL DATA.
N.A. DENOTES NCT APPLICAELE CATA.


K.A.
N.A0
C303


SUP.
IAT.
TEMP
OEG
F

53
53
56
59
64
58
55
55
54
58
58
58
61
62
55
50
52
62
62
70
67
63:
63
57
53
47
57
61
64
60
621


58
N302


I ----o
HOT
IbAT.
TEMP
DEG
F
147
156
149
152
159
1521
154
155
157
155
149
156
1581
157
156j
156
156
153
160
156
156
155,
163
1601
160
1491
155
1551
155
153



155
N3---


hOT
WATER
USED
GAL
72
27
89
55
88
72
91
118
72
103
124
112
52
68
59
133
95
82
75
36
36
78
0
33
37
26
44
106
28


N308







SOLAR hEATIhG AhC CCCLING DEMONSTRATION PROGRAM


MCNTHLY REPORT
SFACE HEATING SUBSYSTEM


SOLAR/1025-79/03


SITE: HELIOTHERMICS. INC. LCT 6. GREEhVILLEt SC
REPCRT PERICC=: ARCh.1979


DAY
OF
NQh.


1
2
3
4
5
6
7
8

10
11
12
13
14
15
17

19
20
21
22
23
24
25
26
27
28
29
30
31

SUM
AVG

NES


SPACE
HEATING
LCAD
MILLICh
BTU

0.023
0.033
0.011
0.006
0.002
0.017
0 027
0.011
0.033
00oce
0.035
0*035
0.023
0 0C2
0.024
0.C27
0.025:
G000
C. CCC
C.000
C. 000
0.000
C COO
0.025
0.065
0.080
0.021
0.012

0.000
0. OCO

0.548

0.018

C402


SOLAR
FR CF
LOAD
PCT

100
41
6C,
100
10C
55
iE
97
4;e
SE
se
88
100
74
100
100
100G
100
0
0
0
0
0
60
5E
36
100
43
C
0
0


SOLAR
ENERGY
USEC
PILLICh
ETU

0.022
0.014
0.007
0.006
0.002
0.009
0.027
0.011
0.032
0.008
0.032
0.035
0.017
0.002
0.024
0.027
0.025
0.000
0.000
0.000
0.000
0.000
0.000
0.015
0.038
0.028
0.021
0.00
0.000
000000
0.000
0.0000


CFEP
EhERGY

CILLICh
ETU

0. C
0.021
0.004
0.011
0.001
0.004
0.CC"
0.CC4
0.C14
G.CC2-
0.016
0. C I;
O.Ole
0.00E
0.001
0.C07
0.CCE
0.CC7
0.000
0.CCC
0.000
C. CC
0. CC
0.000
0.01C
0. 42
0.021
0 C07
Q.CC2
0.000
0.COC
0.000


- 0.40l 0224j 0-140--
-1 0.408 I 0.2241 0.140


75

h400


0.013

G400


0.CC7,
C402


AUX
TIEFRiAL
LSED
NILLICh
BTL

C.0CC
0.020
0.004
0.000
0.000
0.008
0.001
0000c
0.001
0.CCO
0.005
0.000
0.C06
0.000
0.000
0.000
0.000
0.000
0.0000
0.000
0.000
0.000
c.000
0.010
0.027
0.C51
0.000
0.007
0.000
0.000
0.000


AUX
ELECT
FUEL
ILL ION
BTU

C
r

A
P
P
L
1
C
A
E
L
E















N.A.


AUX
FOSSIL
FUEL
MILLION
BTU

0.000
0.033
0.007
0.000
0.000
0.013
0.0001
0.0011
0.001
00001

0.008
0.000
0.010
00000
0.000
0.0001
0.000
0.000
0.000
0.OQ0
0.000
00000
0.000


0.000|
0.012
0.0000
0.000
0.000

0.233i


ELECT
ENERGY
SAVINGS
MILLION
BTU

-0.013
-0.017
-0.002
-0.011
-000011
-00003
0.004
-00003
-0.013
0.021
-00091
-0.016
-0.003
-0.001
-0.007
-0.008
-00007
0.0001
0.000
00000
0.000
1 OOOC
0,000
-0.007
-0.037
-0.013
-0.007
0.000
0.000
0.000

-0.15O6


een


0005
aO.C 05

C461


N.A.


0.008

0410


-000C5

0415


I 0.022

0417


* DOFCTES UNAVAILAELE DATA.
1 DENOTES NULL CATA.
N.A. CENCTES NCT APPLICAELE CATA.


FOSSIL
ENERGY
SAVINGS
MILLION
BTU

0.039
0.023
0.0111
0.009
0.004
0.016
0.044
0.018
0. 053
0.013
0.054
0.058
0.028
0 003
0.041
0.046
0.042
0.000
0.000
0.000
0.000O
0.000
0.000
0.025
0.063
0.047
0.0351
0.009
0.000
0.0001
0.000

0e680


BLOG
TEMP

DEG.
F

70
71
71
72
72
71
71
71
72
72
71
71I
72
73
71
71
72
74
76,
77
76
73
72
69
70
68
71
72,
75
761


1-- -
72

h406


--I
AME
TEMP

DEG.
F

46
51
54
62
61
49
46
48
48
51
44
44
52
56
43
40
46
56
60
66
61
58
56
49
39
40
52
55
60
63
66


52

Nt 131




SCLAF HEATIhG AhC CCCLIhG CEMCNSTRATICN PROGRAM

MONTHLY REPORT
ENVIRONMENTAL SUMMARY
SITE: HELICTHERMICS. INC. LCT 6 GREENVILLE, SC
REPORT PERICO: MARCH.197S

DAY TOTAL CIFFUSE ANEIENT DAYTIME RELATIVE
OF INSOLATION INSCLATICh TEMFERATURE AMEIENT HUMIDITY DIR
MOhTH TEMP
ETU/SC.FT ETr/SQ.FT DEC F OEG F PERCENT CE
------------------------ -------- -------
1 797 I 46 51 N
2 114 C 51 61 C
3 221 T 54 58 T
4 149 62 64
5 1932 A 61 6E A
6 1828 F 49 58 P
7 1931 F 4e 62 P
8 1450 L 48 55 L
9 2210 I 48 I
10 984 C 51 62 C
11 2393 A 44 51 A
12 2360 E 44 60 8
13 1996 L 52 66 L
14 1565 E 56 63 E
15 2323 42 54
16 2278 40 50
17 2227 46 64
18 1969 56 72
19 1864 60 74
20 1801 66 76
21 7CE 61 68
22 901 58 62
23 262 56 59
24 1246 4S 51
25 1310 39 44
26 2299 40 52
27 1473 52 66
28 2008 55 63
29 1468 60 70
30 1402 63 72
31 1409 66 74

SLM 4E275 b.A. -
AVG 1560 h.A. 52 62 N.Ae
NBS ID Q001 h113
----------- ------------- -- ---

OEhCTES UtA~AILABLE CATA.
8 DENCTES NULL DATA.
NeA. DENOTES hCT APPLICAELE CATA.


SOLAR/1025-79/03


blhDO
SECTION

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


















N-15
NI 15


lIND
SPEED
M.P.e.
N

T

A
P
P
L
I
C
A
B
L
E

















N.A.
N114











UNIVERSITY OF FLORIDA


3 1262 09052 6327


SU.. G.P.O. 1979-640-189/4163

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