Monthly performance report

E i. 8. SoLA"k /f038 /i /LJ3


SOLAR/1038-79/04

Monthly

Performance

Report

SADDLE HILL TRUST
LOT 36
APRIL 1979


U.S. Department of Energy

SNational Solar Heating and
Cooling Demonstration Program

National Solar Data Program


4270


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


SADDLE HILL TRUST
LOT 36

APRIL 1979


I. SYSTEM DESCRIPTION

Saddle Hill Trust Lot 36 is a single-family residence in Medway, Massachusetts.
Solar energy is used for space heating the home and preheating domestic hot
water (DHW). The system has an array of flat-plate collectors with a gross
area of 315 square feet. The array faces south at an angle of 58 degrees to
the horizontal. A 60 percent glycerol solution is the transfer medium that
delivers solar energy from the collector array to storage; water is the
transfer medium that delivers solar energy from storage to the space heating
and hot water loads. Solar energy is stored in the basement in a 750-gallon
storage tank. The tank is made of steel and lined with polyurethane. Preheated
city water is supplied, on demand, to a conventional 80-gallon DHW tank.
When solar energy is insufficient to satisfy the space heating load, an oil
furnace provides auxiliary energy for space heating. Similarly, a conventional
electric 80-gallon DHW heater provides auxiliary energy for water heating.
The system, shown schematically in Figure 1, has three modes of solar operation.

Mode 1 Collector-to-Storage: This mode activates when the collector tempera-
ture is either more than 400F higher than storage temperature or higher than
1500F. Pump P1 is on. Solar energy transfer takes place through a heat
exchanger located inside the storage tank.

Mode 2 Storage-to-Space Heating: This mode activates when there is a
demand for space heating, storage temperature is 700F or higher, and house
temperature is lower than storage temperature. Pump P3 is on. Solar energy
transfer takes place through a heat exchanger located inside the air duct.

Mode 3 Storage-to-DHW Tank: This mode activates when storage water is 50F
higher than water in the DHW tank. Pump P2 is on. Solar energy transfer
takes place through a heat exchanger located inside the DHW heater.


II. PERFORMANCE EVALUATION

INTRODUCTION

The site was occupied in April and the solar energy system operated continuously
during the month. Solar energy satisfied 69 percent of the DHW requirements
and 20 percent of the space heating requirements. The solar energy system
provided an electrical energy savings of 2.1 million Btu and fossil fuel
energy savings of 1.8 million Btu.


1 4270







1001 COLLECTOR PLANE TOTAL INSOLATION
V T001 OUTDOOR TEMPERATURE
V T600 INDOOR TEMPERATURE

T150



W401 T452 T453 SPACE
RETURN HEATING
AIR T402 SUPPLY
EP401
O T451 < T401

F400

T100 OIL FURNACE DOMESTIC
HOT
SW100 HOT
WWATER





SEP400 I T352

L DHW
T351 HEATER


T301 \ W301 t4 T302
EP100 5W400 COLD
S T151 T450 WATER
i- 40 1 L SUPPLY


EP300


Figure 1. SADDLE HILL TRUST, LOT NO. 36,SOLAR ENERGY SYSTEM SCHEMATIC






WEATHER CONDITIONS


During the month, total incident solar energy on the collector array was 11.1
million Btu for a daily average of 1178 Btu per square foot. This was below
the estimated average daily solar radiation for this geographical area
during April of 1230 Btu per square foot for a south-facing plane with a tilt
of 58 degrees to the horizontal. The average ambient temperature during
April was 470F as compared with the long-term average for April of 490F. The
number of heating degree-days for the month (based on a 650F reference) was
546, as compared with the long-term average of 492.


THERMAL PERFORMANCE

System During April 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 inputs. Solar energy
collected was 4.3 million Btu versus an estimated 5.2 million Btu. 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 3.4 million Btu.
System total solar fraction was 30 percent versus an estimated 59 percent.

Collector The total incident solar radiation on the collector array for the
month of April was 11.1 million Btu. During the period the collector loop
was operating, the total insolation amounted to 8.6 million Btu. The total
collected solar energy for the month of April was 4.3 million Btu, resulting
in a collector array efficiency of 38 percent, based on total incident insola-
tion. Solar energy delivered from the collector array to storage was 4.3
million Btu. There was no measured energy loss during transfer from the
collector array to storage. Operating energy required by the collector loop
was 0.098 million Btu.

Storage Solar energy delivered to storage was 4.3 million Btu. There were
3.4 million Btu delivered from storage to the DHW and space heating subsystems.
Energy loss from storage was 0.62 million Btu. This loss represented 14
percent of the energy delivered to storage. The storage efficiency was 86
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 1150F.

DHW Load The DHW subsystem consumed 2.4 million Btu of solar energy and 1.0
million Btu of auxiliary electrical energy to satisfy a hot water load of 1.2
million Btu. The solar fraction of this load was 69 percent. Losses from
the DHW subsystem were 2.2 million Btu. The DHW subsystem consumed a total
of 0.17 million Btu of operating energy, resulting in an electrical energy
savings of 2.2 million Btu. A daily average of 53 gallons of DHW were consumed
at an average temperature of 138F delivered from the tank.

Space Heating Load The space heating subsystem consumed 1.1 million Btu of
solar energy and 7.0 million Btu of auxiliary fossil fuel energy to satisfy a
space heating load of 5.3 million Btu. The solar fraction of this load was


3 4270






20 percent. The space heating subsystem consumed a total of 1.8 million Btu
of operating energy, resulting in an electrical energy expense of 0.020
million Btu.


OBSERVATIONS

The DHW loop was on continuously throughout the month. This was a prime
contributor to the 2.2 million Btu energy loss in the DHW system.


ENERGY SAVINGS

The solar energy system provided a net electrical energy savings of 2.1
million Btu and a fossil fuel energy savings of 1.8 million Btu. The DHW
subsystem provided an electrical energy savings of 2.2 million Btu, while the
space heating subsystem provided a fossil fuel energy savings of 1.8 million
Btu and incurred an electrical energy expense of 0.020 million Btu.


III. ACTION STATUS

The system designer is investigating DHW subsystem operation.


4 4270






SOLAR HEATING AND COOLING DEMONSTRATION PROGRAM


MONTHLY REPORT
SITE SUMMARY


SITE: SADDLE HILL TRUST LOT 36,
REPORT PERIOD: APRIL,1979


MEDWAY, MA


SOLAR/1024-79/04


SITE/SYSTEM DESCRIPTION:
THE SADDLE HILL TRUST LOT #36 SOLAR ENERGY SYSTEM PROVIDES SPACE HEATING
AND HOT WATER FOR A SINGLE FAMILY RESIDENCE. THE COLLECTOR IS A 14
PANEL LIQUID COLLECTOR* STORAGE IS A 750 GALLON WATER TANK
LOCATED IN THE BASEMENT. AUXILIARY HEATING IS PROVIDED BY A 140,000
BTU/HR OIL FURNACE AND AUXILIARY HOT WATER BY A 14.676 BTU/HR ELECTRIC
DOMESTIC HOT WATER HEATER.


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


11.135
35350
4.269
13551
47
70
0.31
0.098
2.035
14.277


MILLION BTU
BTU/SQ.FT.
MILLION BTU
9TU/SQ*FT.
DEGREES F
DEGREES F

MILLION BTU
MILLION BTU
MILLION BTU


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
1.246
69
2.357
0.171
1.001
1.001
N.A.
2.185
N.A.


HEATING
5.256
20
1 072
1.766
4.184
N.A.
6.973
-0.020
1.787


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


SYSTEM TOTAL
6.497 MILLION STU
30 PERCENT
3.429 MILLION BTU
2.0,35 MILLION PTU
5.184 MILLION BTU
1.001 MILLION BTU
6.973 MILLION BTU
2.067 MILLION BTU
1.787 MILLION BTU


SYSTEM PERFORMANCE FACTOR:


0.380


* DENOTES UNAVAILABLE DATA
& DENOTES NULL DATA
NeA. DENOTES NOT APPLICABLE DATA

REFERENCE: USER'S GUIDE TO THE MONTHLY PERFORMANCE REPORT
OF THE NATIONAL SCLAR DATA PROGRAM,FEBRUARY 28,1978,
SOLAR/0004-78/18









SOLAR HEATING AND COOLING DEMONSTRATION PROGRAM


MONTHLY REPORT
SITE SUMMARY


SITE: SADDLE HILL TRUST LOT 36,
REPORT PERIOD: APRIL,1979


MEDWAY, MA


SOLAR/1024-79/04


SITE/SYSTEM DESCRIPTION:
THE SADDLE HILL TRUST LOT #36 SOLAR ENERGY SYSTEM PROVIDES SPACE HEATING
AND HOT WATER FOR A SINGLE FAMILY RESIDENCE. THE COLLECTOR IS A 14
PANEL LIQUID COLLECTOR. STORAGE IS A 750 GALLON WATER TANK
LOCATED IN THE BASEMENT. AUXILIARY HEATING IS PROVIDED BY A 140.000
BTU/HR OIL FURNACE AND AUXILIARY HOT WATER BY A 14,676 BTU/HR ELECTRIC
DOMESTIC HOT WATER HEATER.

GENERAL SITE DATA:
INCIDENT SOLAR ENERGY 11.748


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
1.315
69
2.486
0.181
1.056
1.056
N.A.
2.306
N.A.


HEATING
5.545
20
1.131
1.863
4.414
N.A.
7.356
-0.022
1.885


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


GIGA JOULES


401430 KJ/SQ.M.
4.503 GIGA JOULES
153885 KJ/SQ.M.
8 DEGREES C
21 DEGREES C
0.31
0.103 GIGA JOULES
2.146 GIGA JOULES
15.062 GIGA JOULES


SYSTEM TOTAL
6.854 GIGA JOULES
30 PERCENT
3.617 GIGA JOULES
2.146 GIGA JOULES
5.470 GIGA JOULES
1.056 GIGA JOULES
7.356 GIGA JOULES
2.181 GIGA JOULES
1.885 GIGA JOULES


SYSTEM PERFORMANCE FACTOR:


0.380


* 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 PROGRAMFEBRUARY 28,1978,
SOLAR/0004-78/18






SOLAR HEATING AND COOLING DEMONSTRATION PROGRAM

MONTHLY REPORT
ENERGY COLLECTION AND STORAGE SUBSYSTEM (ECSS)


SOLAR/1024-79/04


SITE: SADDLE HILL TRUST LOT 36, MEDWAY, MA
REPORT PERIOD: APRIL,1979


DAY
OF
MONTH


INCIDENT
SOLAR
ENERGY
MILLION
BTU

0.111
0.033
0.097
0.299
0.100
0.404
0.343
0.722
0.041
0.263
0.717
0.612
0.551
0.074
0.148
0.110
0.343
0.505
0.406
0 597
0.667
0.393
0.632
0.642
0.389
0.373

0.419
0.234
0.541

----------I
11.135

0.371

0001


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


AMBIENT
TEMP


DEG-F

44
38
41
40
40
38
35
38
34
38
44
48
43
38
41
41
43
46
44
47
50
52
63
60
62
63
*
64
59
65

-

47

N113


-----1-
ENERGY
TO
LOADS
MILLION
STU

0.038
0.042
0.030
0.056
0.042
0.053
0.058
0.217
0.104
0.064
0.152
0.226
0.311
0.131
0.054
0.036
0.046
0.122
0 154
0 153
0.212
0.247
0.133
0*131
0.115
0.117

0.105
0.064
0.098

3.429

0.114


----~--------
ECSS
ENERGY
REJECTED
MILLION
BTU

N
0
T

A
P
P
L
I
C
A
B
L
E


AUX
THERMAL
TO ECSS
MILLION
BTU

N
0
T

A
P
P
L
I
C
A
B
L
E















N.A.

N.A.


ECSS
OPERATING
ENERGY
MILLION
BTU

0.001
0.000
0.001
0.004
0.000
0.004
0.003
0.005
0.000
0.003
0.006
0.006
0.004
0.000
0.000
0.000
0.004
0.006
0.004
0.006
0.005
0.004
0.006
0.005
0.003
0.003

0.005
0.002
0.006

0.098

0.003
0102
0102


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


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 ID


ECSS SOLAR
CONVERSION
EFFICIENCY


0.348
1.274
0.313
0.187
0.415
0.130
0.169
0.301
2.542
0.245
0.212
0i369
0.565
1.765
0.366
0 330
0.134
0.242
0.379
0 257
0.318
0.630
0.211
0.205
0.296
0.314

0.252
0.275
0.181


0.308

N111


N.A.

N.A.








SOLAR HEATING AND COOLING DEMONSTRATION PROGRAM


MONTHLY REPORT
COLLECTOR ARRAY PERFORMANCE


SITE: SADDLE HILL TRUST LOT 36, MEDWAY, MA
REPORT PERIOD: APRIL,1979


SOLAR/1024-79/04


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


INCIDENT
SOLAR
ENERGY
MILLION
BTU


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
29
29
30

SUM

AVG

NBSID


I


OPERATIONAL
INCIDENT
ENERGY
MILLION
BTU

0.036
0.000
0e025
0.243
0.011
0.320
0.207
0.647
0.000
0.150
0.651
0.542
0.493
0.000
0.009
0.000
0.254
0.432
0.322
0.522
0.585
0.274
00592
0.533
00257
0.216

0.360
0.113
0.470
-------------
8.550

0.285


* DENOTES UNAVAILABLE DATA.
8 DENOTES NULL DATA.
NsAe DENOTES NOT APPLICABLE DATA.


~----------1
0.111
0.033
0.097
0.299
0.100
0.404
0.343
0.722
0.041
0.263
0.717
0.612
0.551
0.074
0.148
0.110
0.343
0.505
0.406
0.597
0.667
0.393
0.632
00642
0.389
0.373

0.419
0.234
0.541

11.135
I-----------
0.371

Q001


-----(--------------


COLLECTED
SOLAR
ENERGY
MILLION
BTU
I----------
0.016
0.000
0.011
0 124
0 009
0.167
0.093
0.330
0.000
0.056
0.343
0.267
0.251
0.000
0.004
0.000
0.138
0.204
0.158
0.259
0.307
0*127
0.310
0.269
0. 120
0.098

0.169
0.067
0.231

4.269
~------------1
0.142
-100-


DAYTIME
AMBIENT
TEMP
DEG F

/----------1
45
38
45
49
42
44
38
42
34
42
51
57
53
40
45
46
52
53
54
59
67
65

71
74
73

73
65
*



52

----------(


COLLECTOR
ARRAY
EFFICIENCY

-------------I
0.142
0.000
0.111
0.415
0.086
00413
0.270
0.456
0.000
0.212
0 479
0.436
0.456
0.000
0.028
0.000
0.404
0.403
0.388
0.434
0.461
0.324
0.492
0.419
0.309
0.263

0.403
0 285
0.427
-----------|

----_------ -
0.383

N100







SOLAR HEATING AND COOLING DEMONSTRATION PROGRAM


MONTHLY REPORT
STORAGE PERFORMANCE


SITE: SADDLE HILL TRUST LOT 36,
REPORT PERIOD: APRIL,1979


MEDWAY. MA


SOLAR/I 024-79/04


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

NBS ID


ENERGY
TO
STORAGE
MILLION
BTU

0.017
0 000
0.013
0.124
-0.001
0.172
0.088
0.325
0.000
0.060
0.343
0.271
0.253
0.000
0.005
0.000
0.144
0.213
0.164
0.266
0.311
0.132
0.320
0.274
0.115
0.095

0.178
0.054
0.244

4.325
-~---------
0.144

Q200
-~---------


ENERGY
FROM
STORAGE
MILLION
BTU

0.038
0.042
0.030
0.056
0.042
0.053
0.058
0.217
0.104
0.064
0.152
0.226
0.311
0.131
0,054
0. 036
0.046
0.122
0.154
0.153
0.212
0,247
0.133
0.131
0.115
0.117

0.105
0.064
0.098

3.429
------------I
0.114

0201


I----------
CHANGE
IN STORED
ENERGY
MILLION
BTU

-0.022
-0.033
-0.015
0.053
-0.028
0.097
0.012
0.079
-0.089
-0.010
0.147
0. 032
-0.073
-0.109
-0.044
-0.032
0.071
0.064
-0.000
0.087
0.062
-0.108
0.174
0.070
-0.030
-0 043
-0.134
0.040
-0.030
0.087

0.275

0.009

0202


STORAGE
EFFICIENCY


STORAGE
AVERAGE
TEMP
DEG F


93
89
85
89
90
95
105
120
109
103
119
126
125
109
98
92
96
110
114
122
130
124
137
148
151
144

131
130
137


115


0,856

N108


* DENOTES UNAVAILABLE DATA.
8 DENOTES NULL DATA.
NAA. DENOTES NOT APPLICABLE DATA.


1 006
1.000
1.218
0.880
-17.524
0 866
0.798
0.911
1 000
0.893
0.872
0.949
0.941
1.000
2.018
1.000
0.814
0.873
0.935
0.000
0.882
1 056
0.960
0.737
0.747
0 783

0.817
0.631
0.755






SOLAR HEATING AND COOLING DEMONSTRATION PROGRAM


MONTHLY REPORT
HOT WATER SUBSYSTEM


SITE: SADDLE HILL TRUST LOT 36, MEDWAY, MA
REPORT PERIOD: APRIL,1979


SOLAR/1024-79/04


---- I
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

0.0261
0.043
0.018
0,040
0.043'
0.050
0 045
0.0561
0.037
0.0381
0 032
0 0301
0.023
0.058
0.052
0.043
0.0401
0.022
0.0351
0 057
0.025
0 086
0.042
0.052
0.042
0.0491

0.0541
0.016
0.0491

1.246

0.042

0302
________ |-


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


SOLAR
FR.OF
LOAD
PER
CENT

47
42
35
41
44
43
53
75
68
581
74
82
76
67
54
50
48
58
68
69
81
85
92
96
99
100

891
83
90



69

N300


SOLAR
ENERGY
USED
MILLION
BTU

0.038
0.042
0.030
0.0561
0.042
0.053
0.058
0.122
0.062
0.064
0.105
0.107
0.0731
0.070
0.0541
0 036
0.0461
0.060
0.096
0.104
0.072'
0.1241
0.133
0.1311
0,115
0.117

0.105
0.064
0.098
---------- i
2.357
------- 1
0.079
Q300
0300


OPER
ENERGY

MILLION
BTU

0 006
0 006
0.005
0.006
0.006
0 0061
0.006
0.006
0.006
0.006
0.006
0.006
0.005
0.006
0.006
0.006
0.005;
0.006
0.006
0.006
0. 005
0.006
0.006
0.006
0.006
0.006

0.006
0.006
0.006

0.171

0.006

Q303


AUX
THERMAL
USED
MILLION
BTU

0.047
0.061
0.055
0.071
0.055
0.060
0.043
0.032
0. 039'
0.046
0.034
0.023
0.023
0.049
0.048
0.044
0.044
0 029
0.044
0.041
0.006
0.034
0.003
0.004
0.000
0.000

0.013
0.015
0.004

1.001

0.033
0301
Q301


AUX
ELECT
FUEL
MILLION
BTU

0.047
0.061
0.055
0.071
0.055
0 060
0.043
0.032
0.0391
046
0.0341
0.023
0.023
0.049
0.048
0.044
0.044
0.029
0 044
0.0411
0.006
0.034
0.003
0.004
0.000
0.000

0.013
0.015
0.004
--------- I
1.001

0.033

Q305


AUX
FOSSIL
FUEL
MILLION
BTU

N
0
T

A
P
Pi
L
I
C
A
B
L'
El















--- -_______ I
N.A.

N.A.

0306


-------- I
ELECT
ENERGY
SAVINGS
MILLION
BTU

0.033
0.0361
0:025
0.050
0.036
0 047
0.0521
0.117
0.056
0.059
0.099
0.101
0.0671
0.064
0.048
0.0311
0.040
0.0551
0.090
0.098
0.067
0.118
0.127
0.125
0.1091
0.111
*I
0.100
0.059
0.092

2.185
_______ |
0.073

0311


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


--------I
FOSSIL
ENERGY
SAVINGS
MILLION
BTU

N
0
T

A
P
P
L
Il
C
Al
B|
L
El
















N. A.
N.A.

0313


---- I
SUP.
WAT.
TEMP
DEG
F
---- i
59'
50
511
49
501
49
51
52
49
53
48
521
53
51
47
46
55
53
48
49
541
49
53
54
53
55

55
51
55

I
521

N305


---- I
HOT
WAT.
TEMP
DEG
F

139
143
1391
142
1421
143
142
139
140
136
139
139'
128
134
137
143
130
134
139
141
1361
140
1331
135
144]
138

130
141
136

-1

138]

N307


HOT
WATER
USED

GAL

35
52
24
52
53
61
56
74
46
51
39
39
29
75
65
57
55
28
45
72
32
109
54
64
50
64

73
21
65

1596

53

N308






SOLAR HEATING AND COOLING DEMONSTRATION PROGRAM


MONTHLY REPORT
SPACE HEATING SUBSYSTEM


SITE: SADDLE HILL TRUST LOT 36.
REPORT PERIOD: APRIL,1979


MEDWAY, MA


SOLAR/1024-79/04


DAY
OF
M3N.


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

0.178
0.334
0.234
0.164
0.199
0.272
0.384
0.245
0.361
0.267
0.196
0.147
0.239
0.315
0.231
0.235
0.197
0.203
0.204
0. 166
0.185
0.124
0.000
0.000
0.000
0.000

0.000
0.000
0.000

5.256

0.175

0402


SOLAR
FR. OF
LOAD
PCT


0
0
0
0
0
0
0
39!
12
0
24
81
100
19
0
0
0
31
28'
30
75
100
0
0'
0
0

0
0l

-I

20

N400


SOLAR
ENERGY
USED
MILLION
BTU

0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.095
0.043
0.000
0.047i
0.119
0.239
0.061'
0.000
0.000
0.000
0.062
0.058
0.049
0.140
0 124
0.000
0.0001
0.000
0.000

0.0000
0.000
0.000
------"-- 1
1.072
-- ------ |
0.036
0400
0400


OPER
ENERGY

MILLION
BTU

0. 043
0.082
0.058
0.042
0.048
0.065
0 090
0 097
0.109
0. 065
0.0641
0. 092
0.1701
0.111
0 0561
0.056
0.051
0.0791
0. C79
0.057
0. 106
0 0881
0.000
0 000
0.000
0.000
I*
0.000
0.0001
0 000
--------I
1.766

0.059
0403-
0403
--,------ i


AUX
ELECT
FUEL
MILLION
BTU

N
0
T

A
P
P
L
I
C
A
B
L
E


AUX
THERMAL
USED
MILLION
BTU

0 178
0.334
0.234
0 164
0 199
0.272
0.384
0.150
0.318
0 267
0 148
0.028
0 000
0.253
0.231
0.235
0.197
0.141
0.146
0.117
0.046
0.000
0.000
0.000
0 000
0.000

0.000
0.000
0.000

4.184

0.139

0401


----I
AUX
FOSSIL
FUEL
MILLION
BTU

0.297
0.556
0.391
0.274
0.3311
0,454
0.6411
0.251
0 5301
0.446
0 247
0.047
0.000
0.4221
0.384
0:392
0.328
0.234
0.244
0 1951
0.076
0.000
0.0001
0.000
0.0000


0.000
0.000
00000
--------- 1
6.973

0.2320

0410


ELECT
ENERGY
SAVINGS
MILLION
BTU

0.000
0,000
0.000
0.000
0.0000
0.000
0.000
-0.002
-0.0011
0.000
-0.001
-0.002
-0 005
-0.0011
0.000
0.000
0.000
-0.001
-0 001
-0.001
-0.003
-0.002
0.000
0.000
00000
0,000

0.0000
0.000
0,000;

-0.0201

-0.001

Q415


FOSSIL
ENERGY
SAVINGS
MILLION
BTU

0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.158
0.071
0.000
0.078
0.198
0.398
0 102
0.000
0 000
0.000
0 103
0 097
0 082
0. 27-
0.206
0.000
0.000
0.000
0.000

0.000
0.000
0.000

1 .787

0.060

0417


BLDG AMB
TEMP TEMP


DEG.
F

68
70
711
67
68
67
67
68
69
70
70
70
70
701
70
70!
70
701
701
69
701
72
711
70
71
72
*
72
72
72


70

N406


DEG.


44
38
41
40
40
38
35
38
34
38
44
48
43
38
41
41
43
46
44
47
C0
52
63
60
62
63
*
64
59
65


47

N113


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


NoAo
N.A.
N.A.




SOLAR HEATING AND COOLING DEMONSTRATION PROGRAM

MONTHLY REPORT
SPACE COOLING SUBSYSTEM


SITE: SADDLE HILL TRUST LOT 36,
REPORT PERIOD: APRIL,1979


MEDWAY, MA


SOLAR/1024-79/04


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


SPACE
COOLING
LOAD
MILLION
BTU

N'
0
T

A
P
P
LI
I
C
A
B
L
El
















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

N.A.

Q502
---------I


SOLAR
FR. OF
LOAD
PCT


N
0
T

Al
Pi
Pi
L
I
C
A
B
L
E















-I

N.A.

N500
----I


N.A.

N.A.


0500


SOLAR
ENERGY
USED
MILLION
BTU

N
0
T

A
P
P
L
I
C
A
B
LI
E


OPER
ENERGY

MILLION
BTU

N
01
T

A
P
P
L
I
C
A
B
Ll
E
















N.A.
~--------
-IeA
N.A.

Q503


AUX
THERMAL
USED
MILLION
BTU

N
01
Ol
T

A
P
P
L
I
C
Al
B
L
E
















N.A.

N.A.

Q501


AUX
ELECT
FUEL
MILLION
BTU

N
0
T

A
P
P
L
I
C
A
B
L
El
















N. A.

N.A.

-1


AUX
FOSSIL
FUEL
MILLION
BTU

N
O
T

A
P
P


A
B
L
E
















N.A.

N.A.

0508


N.A.

N.A.

0512


ELECT
ENERGY
SAVINGS
MILLION
BTU

N
O
T

A
P
P
L
I
C
A
B
L
E


N.A.

N.A.

0514


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


FOSSIL
ENERGY
SAVINGS
MILLION
BTU

N
0
T

A
P
P
L
I
C
A
B
L
E


BLDG
DRY
BULB
TEMP
F

68
70
711
67
68
67
67
F8
69
70
70
701
70
70
70
70
70
70
70
69
70
72
71
70
71
72
72
72
72
72



70

N406


AMB
TEMP

DEG
F

44
38
41
40
40
38
35
38
34
38
44
48
43
38
41
41
43
46
44
47
50
52
63
60
62
63
*
64
59
65



47

N113






SOLAR HEATING AND COOLING DEMONSTRATION PROGRAM

MONTHLY REPORT
ENVIRONMENTAL SUMMARY


SITE: SADDLE HILL TRUST LOT 36. MEDWAY, MA
REPORT PERIOD: APRIL,1979


DAY TOTAL DIFFUSE AMBIENT
OF INSOLATION INSOLATION TEMPERATURE
MONTH
BTU/SQ.FT BTU/SQ.FT DEG F

1 351 N 44
2 105 C 38
3 308 T 41
4 950 40
5 318 A 40
6 1283 P 38
7 1090 P 35
8 2293 L 38
9 130 I 34
10 836 C 38
11 2275 A 44
12 1943 B 48
13 1748 L 43
14 236 E 38
15 468 41
16 350 41
17 1088 43
18 1604 46
19 1289 44
20 1894 47
21 2116 50
22 1246 52
23 2005 63
24 2037 60
S25 1236 62
26 1183 63
27 *
28 1329 64
29 743 59
30 1718 65
1 ~---- W1-*--1 11 L------ > ---------*--- ----- S ---- ^w ---- --_ -----B-l*l M ***W M W*--- 4-- M
SSUM 35350 .A.
0 _------- ---------- ---------_ -___________
AVG 1178 NA. 47

NBS ID 0001 N113
9 ~------_ ---------- ---------,*-. ------.----_

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


SOLAR/I 024-79/04


DAYTIME
AMBIENT
TEMP
DEG F

45
38
45
49
42
44
38
42
34
42
51
57
53
40
45
46
52
53
54
59
67
65
*
71
74
73
*
73
65
*
-

52
I----------
---------


RELATIVE
HUMIDITY

PERCENT
---------~--1
N

T

A
P
P
L
I
C
A
B
L
E

















N-A.


WIND
DIRECTION

DEGREES

N
0
T

A
D
P
L
I
C
A
B
L
E















/---------------
I

---- -----|
N.A.

N115
------------I


WIND
SPEED

M.P.H.

N
0
T

A
P
0
L
I
C
A
B
L
E


N.A.

N114












UNIVERSITY OF FLORIDA
11111i lllll11111 llll III 111
3 1262 09052 6236

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