Monthly performance report

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Material Information

Title:
Monthly performance report Homes by Marilynn
Uncontrolled:
Homes by Marilynn
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 energy -- New Mexico -- Albuquerque   ( lcsh )
Solar houses -- New Mexico -- Albuquerque   ( lcsh )
Genre:
federal government publication   ( marcgt )
non-fiction   ( marcgt )

Notes

General Note:
National solar data program.
General Note:
Monthly Catalog Number: gp 80010069
General Note:
National solar heating and cooling demonstration program.
General Note:
"SOLAR/1008-79/03" ; "SOLAR/1008-79/04" ; "SOLAR/1008-79/05" ; "SOLAR/1008-79/06."

Record Information

Source Institution:
University of Florida
Rights Management:
All applicable rights reserved by the source institution and holding location.
Resource Identifier:
aleph - 027069281
oclc - 05859849
System ID:
AA00013867:00003


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Full Text




SOLAR/1008-79/05


Monthly

Performance

Report


HOMES BY MARILYNN
MAY 1979


U.S. Department of Energy

National Solar Heating and
Cooling Demonstration Program


National Solar Data Program


_ __ __


SI .-21: SOLAV'/ 100 i /Os


I
i


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


HOMES BY MARILYNN

MAY 1979

I. SYSTEM DESCRIPTION

The Homes by Marilynn site is a single-family residence in Albuquerque,
New Mexico. Solar energy is used for space heating the home and preheating
domestic hot water (DHW). The solar energy system has an array of flat-plate
collectors with a gross area of 335 square feet. The array faces south at an
angle of 55 degrees to the horizontal. A mixture of 35 percent ethylene
glycol and 65 percent water is the transfer medium that delivers solar energy
from the collector array to a liquid-to-liquid heat exchanger in the storage
loop. It also delivers solar energy to a liquid-to-air heat exchanger in the
space heating subsystem in order to preheat outside air for the heat pump.
Solar energy is stored underground in a 1000-gallon water storage tank. The
city supply water is preheated by continuously circulating water from a
preheat tank through a heat exchanger in the storage tank. Preheated city
water is stored in a 30-gallon preheat storage tank and supplied, on demand,
to a conventional 40-gallon DHW tank. When solar energy is insufficient to
satisfy the space heating load, a heat pump and an electrical heating element
in the air-handling unit provide auxiliary energy for space heating. Similarly,
an electrical heating element in the DHW tank provides auxiliary energy for
water heating. The system, shown schematically in Figure 1, has five modes
of solar operation.


Mode 1 Collector-to-Storage: This mode activates when the temperature
at the top of the collector is 100F higher than the temperature in storage.


Mode 2 Storage-to-Space Heating: This mode activates when there is a
demand for space heating and the storage temperature is higher than 850F.

Mode 3 Storage-to-DHW Tank: This mode is active at all times with water
continuously circulating between the DHW preheat tank and the storage tank.













* 1001 COLLECTOR PLANE TOTAL INSOLATION
V T001 OUTDOOR TEMPERATURE
T TO INDOOR TEMPERATURE


r--
AIR HANDLING UNIT

SIT4 SPACE
TE03X1 T4 HEATING
RETURN T1 AE OR
T10 -- -AIR COOLING
SENP03 < 2 40UPPLY


"HEAT
NV1 T400 PUMP EP401

OUTSIDE T405 OUTSIDE


| II OUTSIDE AHU
L --- ------- J


V2 00W401 DOMS
TANKI t i NTB I T1WATER


Figure 1. HOMES BY MARIL YNN SOLAR ENERGY SYSTEM SCHEMA TIC


1,000rGAL
WATER
THERMAL
STORAGE












Mode 4 Collector-to-Storage and Heat Pump Assist: This mode activates when
the conditions for mode 1 are satisfied, there is a demand for heat pump
assistance for space heating, and the temperature of storage is higher than
1350F. During this mode, the outside air that is transferred across the heat
pump coil is preheated.


Mode 5 Storage-to-Preheat Assist: This mode activates when there is no
flow through the collector, the temperature of storage is higher than 1350F,
and a demand for heat pump assistance for space heating exists. The collector
loop heat exchanger obtains energy from storage to preheat the outside air
that is transferred across the heat pump coil.



II. PERFORMANCE EVALUATION



INTRODUCTION


The site was occupied in May and the solar energy system operated continuously
during the month. Total solar energy collected was 2.4 million Btu and the
amount of solar energy used was 1.3 million Btu or 54 percent of the collected
energy. The change in stored energy was 0.014 million Btu and the total
system losses amounted to 1.1 million Btu. Solar energy satisfied 66 percent
of the DHW requirements and 64 percent of the space heating requirements.
The solar energy system provided an electrical energy savings of 0.25 million
Btu.



WEATHER CONDITIONS


During the month, total incident solar energy on the collector array was
14.7 million Btu for a daily average of 1534 Btu per square foot. This was
below the estimated average daily solar radiation for this geographical area
during May of 1856 Btu per square foot for a south-facing plane with a tilt













of 55 degrees to the horizontal. The average ambient temperature during May
was 630F as compared with the long-term average for May of 650F. The number
of heating degree-days for the month (based on a 650F reference) was 115, as
compared with the long-term average of 58. The number of cooling degree-days
was 51, as compared with the long-term average of 67.


The ambient temperature sensor (TOO1) provided erroneous values intermit-
tently during the month. The affect on the average temperature reading
appears to be negligible: the average ambient temperature measured at another
solar installation in this geographical area was also 630F.



THERMAL PERFORMANCE


System During May the solar energy system performed somewhat poorer than
expected. The expected performance was determined from a modified f-chart
analysis using measured weather and subsystem loads as input. Solar energy
used by the system was estimated by assuming that all energy collected would
be applied to the load. Actual solar energy used was 1.3 million Btu versus
an estimated 2.0 million Btu. System total solar fraction was 66 percent
versus an estimated 100 percent.


Collector The total incident solar radiation on the collector array for the
month of May was 14.7 million Btu. During the period the collector loop was
operating, the total insolation amounted to 8.0 million Btu. The total
collected solar energy for the month of May was 2.4 million Btu, resulting in
a collector array efficiency of 16 percent, based on total incident insolation.
Solar energy delivered from the collector array to storage was 2.7 million
Btu.


The apparent 0.3 million Btu gain in solar energy delivered to storage over
the amount collected is an obvious impossibility. The flow rates measured by
sensors W100 and W200 should remain constant throughout a period of continuous
collection. The source of this variation has not been determined. However,












potential sources are: an erroneous measurement capability through the
flow sensors, actual flow variance caused by the collector pump, and/or
inconsistent operation of valves V1 and V2. At the end of April a very
high (50 to 60 percent) flow rate variation had been observed. This condi-
tion continued to deteriorate until May 7 when flow became totally unmea-
surable. On May 9, after fluid was added to the collector loop, the varia-
tion decreased to 15 to 20 percent, which was the condition prior to the
sudden deterioration.


Storage Solar energy delivered to storage was 2.7 million Btu. There were
1.3 million Btu delivered from storage to the DHW and space heating sub-
systems. Energy loss from storage was 1.4 million Btu. This loss repre-
sented 52 percent of the energy delivered to storage. The storage efficiency
was 48 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 1300F.


DHW Load The DHW subsystem consumed 1.2 million Btu of solar energy and
0.51 million Btu of auxiliary electrical energy to satisfy a hot water load
of 1.4 million Btu. The solar fraction of this load was 66 percent. Losses
from the DHW subsystem were 0.39 million Btu. The DHW subsystem consumed a
total of 0.24 million Btu of operating energy, resulting in an electrical
energy savings of 0.74 million Btu. A daily average of 92 gallons of DHW
was consumed at an average temperature of 1270F delivered from the tank.

Space Heating Load Space heating was necessary on only 4 days during May
with a total requirement of 0.21 million Btu. The solar energy system
provided 0.14 million Btu or 64 percent of this requirement. The remaining
load of 0.074 million Btu was satisfied by an auxiliary electrical heat pump
at an electrical expense of 0.029 million Btu. The space heating subsystem
consumed an additional 0.024 million Btu of operating energy. A net elec-
trical energy savings of 0.063 million Btu was obtained by the solar portion
of the space heating subsystem.












OBSERVATIONS


Two factors limited the total effectiveness of the solar system this month.
The collector loop functioned poorly until fluid was added to the system on
May 9. The energy available in storage had been reduced and it was not
sufficient to satisfy the space heating requirement on May 9, 10, and 11.
The second factor was caused by the combination of large hot water utiliza-
tion in conjunction with a relatively small (30 gallon) DHW preheat tank.
Electrical energy is frequently required to heat the water in the DHW tank to
satisfy the thermostat setting. The replenishment water from the preheat
tank has not always had sufficient time to be heated from solar energy prior
to the next hot water demand.


The space heating subsystem is designed to utilize solar energy as long as
the storage temperature is higher than 850F. Measurements of storage indi-
cate that the use of solar energy for space heating terminates when the
storage temperature decreases to 105F. The constantly cycling DHW preheat
loop continues to extract energy from storage as long as there is a demand
in the DHW preheat tank. Storage must then be reheated to 1050F in order to
replace the storage losses and the energy used by the DHW preheat. Then
solar energy space heating can be accomplished.


In order to heat the house, mode 4 and mode 5 require the use of the heat
pump and a storage temperature of at least 1350F. The heat pump is only
used to heat the house upon a second-stage thermostat heating requirement
(house temperature is "n" degrees less than the thermostat setting). The
only time that these criteria can be met is when mode 2 is not functioning.
Since the valves and flow rate in the collector loop are potential sources
of the imbalance in energy calculations, elimination of the heat pump assist
functions may be worth considering.



ENERGY SAVINGS


The solar energy system provided a net electrical energy savings of 0.25
million Btu. The DHW subsystem provided an electrical energy savings of












0.74 million Btu and the space heating subsystem provided an electrical
energy savings of 0.063 million Btu. The collection and storage subsystem
incurred an electrical energy expense of 0.55 million Btu.



III. ACTION STATUS


Flow rate variance through the collector flow rate sensor (W100) is affecting
the energy collection calculation. An investigation is continuing to deter-
mine whether the measurement sensor or an erratic flow is the cause. A test
run on May 9 to utilize the heat pump assist mode to compare flows through
W100 and W400 was inconclusive. Although expected to be identical, the flow
rate through W400 measured one third the flow rate through W100.


Boeing is planning to replace the temperature sensor (T100) that measures the
outside ambient temperature.


On May 4, the grantee replaced the burnt out heating element in the DHW loop.

The grantee is evaluating whether the deactivation of the solar portion of
the space heating subsystem is acceptable at a 105F storage temperature or
whether it should be corrected to operate in the 850F design level.













SOLAR HEATING AND COOLING DEMONSTRATION PROGRAM


MONTHLY REPCPT
SITE SUMMARY


SOLAR/1008-79/05


SITE: HOMES BY MARILYN
REPORT PERIOD: MAY,1S79


SITE/SYSTEM DESCRIPTION:
HOMES BY MARILYN IS A SINGLE FAMILY DWELLING. THE HEAT PUMP IS ASSISTED BY
SOLAR ENERGY DURING THE HEATING CYCLE. NO SOLAR ENERGY IS USED IN ASSISTING
THE COOLING CYCLE OF THE HEAT PUMP. HOWEVER, A DOMESTIC HOT WATER LOAD IS RE-
QUIRED YEAR-ROUND.
GENERAL SITE DATA:
INCIDENT SOLAR ENERGY 14.738 MILL


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


SUBSYSTEM SUMMARY:
LOAD
SOLAR FRACTION
SOLAR ENERGY USED
OPERATING ENERGY
AUX. THERMAL ENERGY
AUX. ELECTRIC FUEL
AUX. FOSSIL FUEL
ELECTRICAL SAVINGS
FOSSIL SAVINGS


HOT WATER
1.348
66
1.174
0.235
0.567
0.567
N.A.
0.740
N.A.


HEATING
0.212
64
0.136
0.024
0.021
0.029
N.A.
0.063
N.A.


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


ION BTU


47542 BTU/SQ.Fl.
2.402 MILLION BTU
7749 BTU/SQ.FT.
63 DEGREES F
77 DEGREES F
0.09
0.550 MILLION BTU
0.808 MILLION BTU
3.807 MILLION BTU

SYSTEM TOTAL
1.560 MILLION BTU
66 PERCENT
1.311 MILLION BTU
0.808 MILLION BTU
0.588 MILLION BTU
0.596 MILLION BTU
N.A. MILLION BTU
0.253 MILLION BTU
N.A. MILLION BTU


SYSTEM PERFORMANCE FACTOR:


0.334


* DENOTES UNAVAILABLE DATA
@ DENOTES NULL DATA
N.A. DENOTES NOT APPLICABLE DATA
REFERENCE: USER'S GUIDE TO THE MONTHLY PERFORMANCE REPORT
OF THE NATIONAL SOLAR DATA PRCGRAM,FEBRUARY 28,1978,
SOLAR/0004-78/18












SOLAR HEATING AND COCLING DEMONSTRATION PROGRAM
MONTH LY REPORT
SITE SUMMARY


SOL AR/1008-79/05


SITE: HOMES BY MARILYN
REPORT PERIOD: MAY,1979


SITE/SYSTEM DESCRIPTION:
HOMES BY MARILYN IS A SINGLE FAMILY DWELLING. THE HEAT PUMP IS ASSISTED BY
SOLAR ENERGY DURING THE HEATING CYCLE. NC SOLAR ENERGY IS USED IN ASSISTING
THE COOLING CYCLE OF THE HEAT PUMP. HOWEVER, A DOMESTIC HOT WATER LOAD IS RE-
QUIRED YEAR-ROUND.
GENERAL SITE DATA:
INCIDENT SOLAR ENERGY 15.549 GIGA


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


SUBSYSTEM SUMMARY:
LOAD
SOLAR FRACTION
SOLAR ENERGY USED
OPERATING ENERGY
AUX. THERMAL ENG
AUX. ELECTRIC FUEL
AUX. FOSSIL FUEL
ELECTRICAL SAVINGS
FOSSIL SAVINGS


HOT WATER
1.422
66
1.239
0.248
0.598
0.598
N.A.
0.781
N.A.


HEATING
0.224
64
0.144
0.025
0.022
0.031
N.A.
0.066
N.A.,


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


JOULES


539886 KJ/SQ.M.
2.534 GIGA JOULES
87998 KJ/SQ.M.
17 DEGREES C
25 DEGREES C
0.09
0.580 GIGA JOULES
0.853 GIGA JOULES
4.016 GIGA JOULES

SYSTEM TOTAL
1.646 GIGA JOULES
66 PERCENT
1.383 GIGA JOULES
0.853 GIGA JOULES
0.620 GIGA JOULES
0.629 GIGA JOULES
N.A. GIGA JOULES
0.267 GIGA JOULES
N.A. GIGA JOULES


SYSTEM PERFORMANCE FACTOR:


0.334


* DENOTES UNAVAILABLE DATA
a DENOTES NULL DATA
N.A. DENOTES NOT APPLICABLE CATA
REFERENCE: USER'S GUIDE TO THE MONTHLY PERFORMANCE REPORT
OF THE NATIONAL SOLAR DATA PROGRAM,FEBRUARY 28,1978,
SOLAR/0004-78/18


I_











SCLAR HEATING AND COOLING DEMONSTRATION PROGRAM
MONTHLY REPORT
ENERGY COLLECTION AND STORAGE SUBSYSTEM (ECSS)


SOLAR/1008-79/05


SITE: HOMES BY MARILYN
REPORT PERIOD: MAY,1979


DAY
OF
MONTH


1
2
3
4
5
6
17
8
19
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


AMBIENT
TEMP


INCIDENT
SOLAR
ENERGY
MILLION
BTU
0.454
0.491
0.347
0.586
0.496
0.627
0.607
0.525
0.297
0.480
0.556
0.608
0.600
0.597
0.336
0.458
0.461
0.516
0.573
0.085
0.570
0.508
0.546
0.426
0.440
0.288
0.372
0.437
0.498
0.507
0.438
14.738
0.475
Q001


ENERGY
TO
LOADS
MILLION
BTU
0.058
0.050
0.050
0.041
0.018
0.022
0.020
0.021
0.045
0.063
0.053
0.050
0.027
0.053
0.030
0.033
0.050
0.034
0.039
0.032
0.073
0.078
0.036
0.067
0.041
0.030
0.020
0.059
0.038
0.044
0.038
1.311
0.042
0,l6


AUX
THERMAL
TO ECSS
I LLI C
BTU
N
0
T
A
P
P
L
I
C
A
B
L
E













N.A.
N.A.


ECSS
OPERATING
ENERGY
MILLION
BTU
0.005
0.007
0.002
0. 009
0.010
0.011
0.013
0.008
0.019
0.020
0.033
0.030
0.025
0.028
0.017
0.019
0.019
0.027
0.026
0.000
0.021
0.023
0.024
0.017
0.019
0.002
0.025
0.021
0.028
0.023
0.018
0.550
0.018
Q102


ECSS
ENERGY
REJECTED
MILLION
BTU
N
0
T
A
P
L
I
C
A
B
L
E













N.A.
N.A.


ECSS SOLAR
CONVERSION
EFFICIENCY


0.128
0.102
0.146
0.069
0.036
0.035
0.033
0.040
0.151
0.131
0.095
0.083
0.045
0.089
0.088
0.072
0.109
0.066
0.067
0.379
0.127
0.153
0.065
0. 157
0.091
0.103
0.053
0.135
0.076
0.087
0.086


DEG-F
63
61
53
60
64
72
69
62
47
50
52
58
60
65
62
66
67
70
71
52
57
66
70
66
64
61
64
e9
71
72
67


63
N113


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


0.089
Nl 1


2









SOLAR HEATING AND COOLING DEMONSTRATION PROGRAM
MONTHLY REPORT
COLLECTOR ARRAY PERFORMANCE


SITE: HOMES BY MARILYN
REPORT PERIOD: MAY,1979


SOLAR/1008-79/05


I----- I--


DAY
OF
MONTH


llN l III


INCIDENT
SOLAR
ENERGY
MILLION
BTU
0.454
0.491
0.347
0.586
0.496
0.627
0.607
0.525
0.297
0.480
0.556
0.608
0.600
0.597
0.336
0.458
0.461
0.516
0.573
0.085
0.570
0.508
0.546
0.426
0.449
0.288
0.372
0.437
0.498
0.507
0.438
14.738
0.475
Q001
.e., 9 --


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


OPERATIONAL'
INCIDENT
ENERGY
MILLION
BTU
0.024
0.036
0.018
0.047
0.024
0.008
0.000
C.000
0.187
C.330
0.490
0.529
0.498
0.501
0.201
0.349
0.280
0.386
0.455
0.000
0.395
0.385
0.430
0.325
0.326
0.040
0.254
0.311
0.411
0.410
0.300
7.951
0.256


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
NBSID


COLLECTED
SOLAR
ENERGY
MILLION
BTU
0.011
0.029
0.008
O. C08
0.053
C. C30
0.012
0.000
C. COO
0.044
0.107
0. 164
0.161
C.155
0.152
0.036
C.111
0.072
0.093
0.139
0.000
C.125
0.122
0.133
C. 102
0.088
0.009
C.C39
0.091
C.108
0.124
0.087
2.402
O. 77
Q10C


DAYTIME
AMBIENT
TEMP
DEG F

75
73
58
73
86
81
77
50
57
65
71
78
87
80
84
77
84
85
57
68
81
84
75
78
67
74
81
83
84
81


75


COLLECTOR
ARRAY
EFFICIENCY


0. 024
0.059
0.023
0.090
0.060
0.019
0.000
0.000
0.149
0.223
0.294
0.265
0.258
0. 255
0.106
0.242
0.157
0.181
0.243
0.000
0.219
0. 239
0.244
0.239
0.195
0.030
0.104
0.208
0.217
0. 244
0.199


0.163
N100









SOLAR HEATING AND COOLING DEMONSTRATION PROGRAM
MONTHLY REPORT
STORAGE PERFORMANCE


SOL AR/1008- 79/05


SITE: HOMES BY MARILYN
REPORT PERIOD: MAY,1979


DAY
OF
MONTH


ENERGY
TO
STORAGE
MILLION
BTU
0.0
0.010
-0.000
0.022
0.008
0.008
0.000
0.000
0.028
0.128
0.204
0.204
0.190
0. 184
0.051
0.131
O.C89
0.109
0.161
0.000
0.146
0. 132
0.157
0.105
0.107
0.010
0.050
0.113
0.134
0. 149
0.106
2.741
0.088
Q200


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


I


~--L---I --1-~-I----- i


--~~~-~-~~1


* DENOTES UNAVAILABLE DATA.
a DENOTES NLLL DATA.
N.A. DENOTES NOT APPLICABLE DATA.


1


1.288
0.042
--Q201--


ENERGY
FROM
STORAGE
MILLION
BTU
0.058
0.050
0.050
C. 041
0.018
0.022
C.020
0.021
C.023
0.063
0.053
C. 050
0.027
0.053
C.030
0.033
0.050
0.034
0.039
C. 032
0.073
C.078
C.C36
0.067
C. 041
0.030
0.020
C. C59
0.038
0.044
C.C38


CHANGE 1
IN STORED
ENERGY
MILLION
BTU
-~I
-0.C43
-0. 009
-0.063
O. 00314
-0.003
-0.035
-0.031 I
-0.016
0. C06
0.079
O.C78
0.085
0.053
-0. C47
0.024
-0.024
0.003
0.048
-C.C81
0.013
0.001
0. 038
-0.018
O.CC3
-0.067
-0.025
0.000
0.035
0.032
-C. C02
0.014
0.000
Q202


STORAGE
I AVERAGE
TEMP
DEG F

132
129
124
119
117
117
115
110
107
108
112
123
133
143
143
142
140
140
143
141
136
138
140
141
140
136
130
128
131
135
137


130


STORAGE
EFFICIENCY


2,121
4. 093
32.480
1.203
1. 821
2. 461
1.000
1.000
0.220
0. 537
0.648
0.628
0. 592
0.575
-0.337
0,.440
0.291
0.333
0.541
1.000
0. 586
0.592
0.468
0.465
0.407
-3. 801
-0.093
0.521
0.547
0.511
0.339


0.475
N108








ANC COOLING CENCNSTRATION PROGRAM


MONTHLY REPORT
HCT WATER SUBSYSTEM


SITE: HOMES BY MARILYN
REPORT PERIOD: MAY,1979


SOLAR/1008-79/05


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
31
SUM
AVG
NBS


HOT
WATER
LOAD
MILLION
BTU
0.046
0. 040
0.041
0.056
0.026
0.051
0.035
0.054
0.033
0.079
0.008
0.081
0.029
0.046
0.0201
0.0321
0.060
0.027
0.024
0.032
0.031
0.086
0. 034
0.0711
0.0321
0.033
0.025
0.084
0.040
0.053
0.039
1.348
0.0431
Q302
I -I


SOLAR
IFR.OF
LOAD
PER I
CENT
96
100
1001
55
451
601
49
46
38
42
331
55
63
771
85
73
58
75
861
77
66
691
81
76
84
65
681
59
64
641
73


661
N300


SOLAR
ENERGY
USED
MILLION
BTU
0.058
0. 050
0.050
0. 041
0.018
0.022
0.020
0.021
0.0171
0.028
0.009
0.050
0. 027
0 .053
0.030
0.033
0.0501
0.034
0.0391
0.032
0.043
0.078
0.036
0.067
0.041
0.030
0.0201
0.059
0.038
0.044
0.038
1.174
0.038
Q300


OPER
ENERGY
MILLION
BTU
0.008
0.008
0.008
0.007
0.008
0.008
0.008
0.008
0.008
0.008
0.008
0.008
0.008
0.008
0. 008
0.008
0.008
0.008
0.008
0.008

0.008
0.008
0.008
0.008
0.008
0.008
0.008
0.008
0.008
0.008
0.008
0.235
0.008
Q303


AUX
THERMAL
USED
MILLION
T TU
0.000
0.000
0.000
0.039
0.018
0.036
0.021
0.037
0.0271
0.058
0.0C8
0.0421
0.015
0.0091
0.004
0.012
0.0241
0.005
0.009
0.0101
0.014
0.031
0.012
0.017
0.008
0.015
0.011
0 .037
1 0.016
0.018
0.013
0.567
0.018
Q301


AUX
ELECT
FUEL
MILLION
BTU
0.000
0.000
0. COC
0.039
0.018
0.036]
0.021
0. 037
0.027]
0.058
0.008
0.042
0.015
0.009
0.004
0.012
0.024
0.005
0.00Co
0.010
0.014
0.031
0.012
0. C17
0.008
0.015
0. C11
0.037
0.016
0.018
0.013
0.567

O.CeQ
Q305


AUX
FOSSIL
FUEL
MILLION
BTU
N
0
T
A
P
P
L
I
C
A
B
L
E













I--------
N.A.
N.A.
Q306


FOSSIL
ENERGY
SAVINGS
MILLION
BTU
N
01
T
A
P
P
I
Cl
A
B
L
E


ELECT
ENERGY
SAVINGS
MILLION
BTU
0.035
0.037
0. 031
0.026
0.007
0.016
0.013
0.017
0.007
0.024
-0.002
0.041
0.012
0.033
0.014
0.017
0.035
0.020
0.014
0.018
0.018
0.053
0.019M
0.051
0.021
0.017
0.012
0.048
0.024
0.033
0.026
0.740
0.024
Q311


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


N. A.
N.A.
Q313


SUP.
WAT.
TEMP
DEG
F
67
69
69
70
69
69
70
71
70
69
69
68
691
71
69
70
69
70
71
71
711
71
73
711
72
721
73
73
731
71
71
-N
70
N3051
I


HOT
WAT.
TEMP
DEG
F
116
108
109
107
131
129
131
1281
132
136
133
130
1281
125
129
1271
128
1261
130
129
127
129
127
130
126
129
128
130
130
131
127


127
N307


HOT
WATER
USED
GAL
124
119
117
120
50
102
68
108
64
152
16
155
57i
93
42
62
125
58
48
67
66
176
72
1481
69
70
52
180
82
110
86
2860
92
N308


SOLAR HEATING


r










SOLAR HEATING AND COOLING DEMONSTRATION PROGRAM


MONTHLY REPORT
SPACE HEATING SUBSYSTEM


SOLAR/1008-79/05


SITE: HOMES BY MARILYN
REPORT PERIOD: MAY,1979


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
31
SUM
AVG.
NBS


SPACE
HEATING
LOAD
MILLION
BTU
0.000
0.000
0.000
0.0001
0.000
0.000
0.0001
0.000
0.071
0.037
0.073
0.000
0.000
0.000
0.0001
0.000
0.000
0.000
0.000
0.000
0.030
0.000
0.0001
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.212]
0.007
Q402


SOLAR
FR.OF
LOAD
PCT

0
0
0
0
0
0
0
0
40
92
60
0
0
0
0
0
0
0
0
0
100
0
0
0
0
0
0
0
0
0
0
----

64
N400


SOLAR
ENERGY
USED
MI LLI ON
BTU
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.028
0.034
0.044
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.030
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.136
0.004
0400


OPER
ENERGY
MILLION
BTU
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.005
0.005
0.011
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.002
0.000
0.000
0.000
C.000
0.000
0.000
0.000
0.000
0.000
0.000

0.024
----I
0.001
0403


AUX
THERMAL
USED
MILLION
BTU
0.000
0.0000
0.000
0 000
0.000
0.000
0.000
0.0001
0.012
0.001
0.008
0.000
0.000
0.000
0.000
0.0001
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
C.000
0.021
0.001
C401


AUX
ELECT
FUEL
MILLION
BTU
0.000
0 000
0.0001
0. OOC
0.000
0.000
0. CO
0.0001
0. 17
0.001
0.011!
0.00C
0.000
0.000
0.00C
0.0001
0.0COC
0.000
0.000!
O. OOC
0.000
O OOC
0.000,
0.000

0.000
0.000
0.000
--- ----1I
O OOC
0. C29
0.0011


AUX 1
FOSSIL
FUEL
MILLION
BTU
N
0
T
A
P
P
L
I
C
A
B
L
E













N.A.
N.A.
Q410
1_241....-


ELECT
ENERGY
SAVINGS
MILLION
BTU
0.000i
0.000
0.000
0.000
0.000
0.0001
0.000
0.000
0.013
0.016
0.0201
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.0001
0.000
0.014
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.063
0.002
Q415


I------- -~
FOSSIL
ENERGY
SAVINGS
MILLION
BTU
N
0
T
A
P
P
L
I
C
A
B
L
E













N.A.
N.A.
0417


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


I


BLDG
TEMP
DEG.
F
77
77
75
75
76
77
77
78
75
72
73
75
76
77
78
79
77
77
77
77
76
77
78
79
801
78
78
791
79
79
79
-

77
N406
---


AMB
T EM P
DEG.
F
63!
61
53
601
64
72
69
62
471
50
52
581
60
65
62
66'
67J
70
71
52
57
66
70
66
64
61
64
69
71
72
67
I---
63
N113


------ 1--~----







SOLAR HEATING AND COOLING DEMONSTRATION PROGRAM
MONTHLY REPORT
ENVIRONMENTAL SUMMARY


SOLAR/1008-79/05


SITE: HOMES BY MARILYN
REPORT PERIOD: MAY,1979


I------
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



29
30
31
SUM
AVG
NBS ID


TOTAL
INSOLATION
BTU/SQ.FT
1466
1585
1118
1890
1599
2022
1958
1694
960
1547
1794
1960
1935
1926
1084
1478
1487
1663
1849
275
1839
1639
1762
1375
1449
927
1200
1410
1605
1634
1412
47542
1534
QO01


DI FFUSE AMBIENT
INSOLATION TEMPERATURE
BTU/SQ.FT DEG F
N 63
0 61
T 53
60
A 64
P 72
P 69
L 62
I 47
C 50
A 52
B 58
L 60
E 65
62
66
67
7C
71
52
57
66
7C
66
64
61
64
69
71
72
67
N. A.
N.A. 63
N113
--------- ----- ---i


DAYTIME
AMBIENT
TEMP
DEG F
75
73
58
73
*
86
81
77
50
57
65
71
78
87
80
84
77
84
85
57
68
81
84
75
78
67
74
81
83
84
81


75


RELAT IV E
HUMIDITY
PERCENT
N
0
T
A
P
P
L
I
C
A
B
L
E













-N
-----N.A.--
N.A.I


---------------


WIND
DIRECTION
DEGREES
N
0
T
A
P
P
L
I
C
A
B
L
E















N.A.
N115
i------------


WIND
SPEED
M.P.H.
N
0
T
A
P
P
L
I
C
A
B
L
E















N.A.
N114


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

















































































































































C






UNIVERSITY OF FLORIDA
II31 1 1 0lll 5I5841llllll1llllillllIIIIIIDi Ill
3 1262 09052 5584




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