Monthly performance report

MISSING IMAGE

Material Information

Title:
Monthly performance report Saddle Hill trust lot 77
Added title page title:
Saddle Hill trust lot 77
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 -- Massachusetts -- Medway   ( lcsh )
Solar houses -- Massachusetts -- Medway   ( lcsh )
Genre:
federal government publication   ( marcgt )
non-fiction   ( marcgt )

Notes

General Note:
"SOLAR/1040-79/01" ; "SOLAR/1040-79-02" ; "SOLAR/1040-79/03" ; "SOLAR/1040-79/04" ; "SOLAR/1040-79/05."
General Note:
National solar heating and cooling demonstration program, National solar data program.
General Note:
Monthly Catalog Number: gp 80007760
General Note:
"SOLAR/1040-79/01" ; "SOLAR/1040-79/03" ; "SOLAR/1040-79/04" ; "SOLAR/1040-79/05."

Record Information

Source Institution:
University of Florida
Rights Management:
All applicable rights reserved by the source institution and holding location.
Resource Identifier:
aleph - 027035022
oclc - 05855572
System ID:
AA00013795:00003


This item is only available as the following downloads:


Full Text
1L -6L A^


/ 'b 0 -


7 / o4--


SOLAR/1040-79/04


Monthly

Performance
Report

SADDLE HILL TRUST
LOT 77
APRIL 1979


.S. Department of Energy

National Solar Heating and
Cooling Demonstration Program

National Solar Data Program


/ fr'







































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 77

APRIL 1979


I. SYSTEM DESCRIPTION

Saddle Hill Trust Lot 77 is a single-family residence in Medway, Massachusetts.
Solar energy is used for preheating incoming city water. The solar energy
system has an array of flat-plate collectors with a gross area of 78 square
feet. The array faces south at an angle of 38 degrees to the horizontal. Air
is used as the medium for delivering solar energy from the collector array to
an air-to-liquid heat exchanger located in the collector air duct. Water is
the medium used to transport solar energy from the heat exchanger to storage.
Solar energy is stored in the basement in a 120-gallon preheat storage tank.
This preheated city water is supplied, on demand, to a conventional 40-gallon
domestic-hot-water (DHW) tank. When solar energy is insufficient to satisfy
the hot water requirements, the gas-driven DHW heater provides auxiliary
energy for water heating. The system, shown schematically in Figure 1, has
two modes of solar operation.

Mode 1 Collector-to-Storage: This mode activates when the difference be-
tween the temperature of the collector air and the temperature of the water in
the preheat tank exceeds 40F and the temperature of the water in the tank is
below 140F. Both the fan and pump go on. This mode continues until the
temperature difference drops to 200F.

Mode 2 Storage-to-Space Heating: This mode activates when there is a demand
for hot water. Hot water from the top of the preheat tank is transferred to
the DHW tank to replace water removed. Simultaneously, city water is auto-
matically supplied to the preheat tank.


II. PERFORMANCE EVALUATION


INTRODUCTION

The site was occupied in April and the solar energy system operated continuously
during the month. Solar energy satisfied 33 percent of the DHW requirements.
The solar energy system provided fossil fuel energy savings of 1.0 million Btu
and incurred an electrical energy expense of 0.12 million Btu.


WEATHER CONDITIONS

During the month, total incident solar energy on the collector array was 2.9
million Btu for a daily average of 1239 Btu per square foot. This was below
the estimated average daily solar radiation for this geographical area during
April of 1372 Btu per square foot for a south-facing plane with a tilt of
















* 1001 COLLECTOR PLANE TOTAL INSOLATION

A T001 OUTDOOR TEMPERATURE


1 DOMESTIC
* HOT WATER














COLD
----WATER
4-- SUPPLY


Figure 1. SADDLE HILL TRUST, LOT NO. 77, SOLAR ENERGY SYSTEM SCHEMA TIC










42 degrees to the horizontal. The average ambient temperature during April
was 470F as compared with the long-term average for April of 490F.

THERMAL PERFORMANCE

System During April the solar energy system performed approximately the same
as expected. The expected performance was determined from a modified f-chart
analysis using measured weather and subsystem loads as inputs. Solar energy
collected was 0.87 million Btu versus an estimated 0.69 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 0.67 million Btu.
System total solar fraction was 33 percent versus an estimated 32 percent.

Collector The total incident solar radiation on the collector array for the
month of April was 2.9 million Btu. During the period the collector loop
was operating the total insolation amounted to 2.4 million Btu. The total
collected solar energy for the month of April was 0.87 million Btu, resulting
in a collector array efficiency of 30 percent, based on total incident insola-
tion. Solar energy delivered from the collector array to the DHW subsystem
amounted to 0.67 million Btu. Energy loss during transfer from the collector
array to the DHW subsystem was 0.20 million Btu. This loss represented 23
percent of the energy collected. Operating energy required by the collector
loop was 0.12 million Btu.

DHW Load The DHW subsystem consumed 0.67 million Btu of solar energy and 2.5
million Btu of auxiliary fossil fuel energy to satisfy a hot water load of
1.8 million Btu. The solar fraction of this load was 33 percent. Losses
from the DHW subsystem were 0.37 million Btu. A daily average of 73 gallons
of DHW was consumed at an average temperature of 1410F delivered from the tank.


OBSERVATIONS

The losses from the DHW subsystem were partly attributed to the relatively high
DHW average temperature of 1410F.


ENERGY SAVINGS

The solar energy system provided a fossil fuel energy savings of 1.0 million
Btu and incurred an electrical energy expense of 0.12 million Btu.


III. ACTION STATUS

No action is required at this time.











SCLAR EATING AhC CCCLING DEMONSTRATION PROGRAM


MNCTHLY REPORT
SITE SUMMARY


SITE: SADDLE HILLS TRUST LOT #77, MEDWAY9MA 02053
REPORT PERIOD: APRIL.1979


SITE/SYSTEM DESCRIPTION:
THE SADDLE HILL TRUST, LCT 77, SCLAR SYSTEM PROVIDES YEAR ROUND HOT
WATER TO A SINGLE FAMILY DETACHED HOLSE. THE CCLLECTCR IS A
FCUR-PANEL AIR CCLLECTCF. STORAGE IS A 120 GALLON WATER TANK.
AUXILIARY HOT WATER IS PROVIDED BY A GAS DOMESTIC HCT WATER HEATER.


GENERAL SITE DATA:
INCIDENT SOLAR ENERGY


COLLECTED SOLAR ENERGY

AVERAGE AMBIENT TEMPERATURE
AVERAGE BUILDING TEMPERATURE
ECSS SCLAR CCNVERSICN EFFICIENCY
ECSS OPERATING ENERGY
TCTAL SYSTEM OPERATING ENERGY
TOTAL ENERGY CONSUMED


SOLAR/1039-79/04


2.900
37175
0.874
11211
47
N.A.
0.23
0.117
0.117
3.462


MILLION BTU
BTU/SQ.FT.
MILLION BTU
BTU/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 HATER
1.771
33
0.672
N.A.
N.A.
2.471
-0.117
1.001


hEATING
N.A.
N.A.
NA.
N.A.
N.A.
N.A.
N.A.
N.A.
N. A.


COOLING
N.A.
N.A.
N.A.
N.A.
Nh.A
N.A.
h.A.
N.A.
N.A.


SYSTEM TOTAL
1.771 MILLION BTU
33 PERCENT
0.672 MILLION BTU
0.117 MILLION BTU
1.482 MILLION BTU
N.A. MILLION BTU
2.471 MILLION BTU
-0.117 MILLION BTU
1.001 MILLION BTU


SYSTEM PERFORMANCE FACTOR:


0.619


* DENOTES LNAVAILAELE DATA
@ DENOTES NULL DATA
N.A. DENOTES NCT APPLICAELE CATA

REFERENCE: USER'S GUIDE TO THE WCNTHLY PERFORMANCE REPORT
CF THE NATIONAL SCLAR DATA PRCGRAMFEERUARY 28,1978,
SOLAR/0004-7E/1I











SOLAR HEATING AND CGCLIhG DEMNCSTRATICN PROGRAM


CNTh-LY REPORT
SITE SUMMARY


SITE: SACDLE HILLS TRUST LCT #77, MECWAYMA 02053
REPORT PERIOD: APRIL,1979


SOLAR/I 039-79/04


SITE/SYSTEM DESCRIPTION:
THE SADDLE HILL TRUST. LOT 77. SOLAR SYSTEM PROVIDES YEAR ROUND HOT
WATER TO A SINGLE FAMILY CETACHEDC FCSE. THE COLLECTOR IS A
FOUR-PANEL AIR COLLECTOR. STORAGE IS A 120 GALLCN WATER TANK.
AUXILIARY HCT WATER IS PROVIDED BY A GAS DOMESTIC HOT WATER HEATER.


GENERAL SITE DATA:
INCIDENT SOLAR ENERGY


COLLECTED SOLAR ENERGY

AVERAGE AMBIENT TEMPERATURE
AVERAGE BULILING TEMPERATURE
ECSS SCLAR 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
1.86E
33
0.709
N.A.
1.564
h.A.
2.606
-0.124
1 .056


HEATING
N.A.
N. A
NoAo
N.A,
N.A.
N.A.
N. A
N.A.
N.A.
N.A.


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


3.059 GIGA JOULES
422165 KJ/SQ.M.
0.923 GIGA JCULES
127317 KJ/SQ.M.
8 DEGREES C
N.A. DEGREES C
0.23
0.124 GIGA JOULES
0.124 GIGA JOULES
3.653 GIGA JCULES


SYSTEM TOTAL
1.E66 GIGA JOULES
33 PERCENT
0.709 GIGA JOULES
0.124 GIGA JOULES
1.564 GIGA JCULES
N.A. GIGA JOULES
2.606 GIGA JOULES
-0.124 GIGA JOULES
1.056 GIGA JCULES


SYSTEM PERFORMANCE FACTOR:


0.619


* DENOTES UNAVAILABLE CATA
2 DENOTES NLLL DATA
N.A. DENCTES NOT APPLICABLE DATA

REFERENCE: USER'S GLIDE TC ThE NCNT-LY PERFORMANCE REPORT
OF THE NATIONAL SCLAR DATA PRCGRAMFEBRUARY 28,1978.
SCLAR/0004-78/18








SOLAR HEATING ANC CCCLING DEMONSTRATION PROGRAM

MONTHLY REPORT
ENERGY CCLLECTICh ANC STORAGE SUBSYSTEM (ECSS)


SITE: SADDLE HILLS TRUST LCT 477, NECHAYVNA
REPORT PERICC: APRIL,1979


02053


SCLAR/1039-79/04


DAY
OF
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

SUM


AVG 0.C97

NBS ID 0001


INCIDENT
SCLAR
ENERGY
NILLICN
eTU

0.0223
0,005
0.023
0.078
0.025
0.108
0.089
0.190
0.006
0.072
0.192
0.166
0.142
0.016
0.037
0. 27

0.141
0.107
0.171
0.187
0.108
0,177
0.177
0.104
0.099
0.014
C.116
0.062
0.147

2.S00


AMEIENT
TEMP


DEG-F
-----------I
45
38
42
40
40
38
37
39
35
39
45
49
43
38
41
41
42
44
44
45
49
52
59
58
60
63
61
64
60
62

---------------
47

N113
~---,--------.


--------- I
AUX
THERMAL
TC ECSS
MILLION
BTU

N
C
T

A
P
P
L
I
C
A
E
L
E


ENERGY
TC
LCADS
NILLICN
BTU

C.002
0.000
0.003
C.022
0.002
C .028
C.018
C 0048
0.000
C.014
0.048
0.047
C.027
C.000
C.001
0.000
C.022
0.041
C 029
0.044
0.025
0.023
0.030
0.058
C 05e
C.008
C.017
0.001
0.041
0.022
C 050

0.672

0.022


N.A.


ECSS
OPERATING
ENERGY
MILLION
BTU

0.000
0.000
0.000
0.004
0.000
0.003
0.003
0.006
0.000
0.003
0.007
0.007
0.005
0.000
0.001
0.000
0.005
0.006
0.006
0.007
0.006
0.005
0.007
0.007
0.005
0.006
0.000
0.006
0.004
0.007

0.117

0.004

Q102


- -- -
ECSS
ENERGY
REJECTED
MILLION
ETU

N.
0
T

A
P
P
L
I
C
A

L
E















N.A.

N.A.


ECSS SOLAR
CONVERSION
EFFICIENCY



0.092
0.000
0.113
0.287
0.077
0.263
0.204
0.254
0.000
0.190
0.250
0.281
0.190
0.000
0.017
0.015
0.260
0.288
0.271
0.258
0.135
0.214
0.171
0.329
0.075
0.167
0.053
0.350
0.360
0.340


0.232
--N--
N111
-----------I


* DENOTES LNAoAILAELE DATA.
& DENOTES NULL DATA.
N.A. DEhCTES hCT APPLICAELE CATA.


b.A.


cn I





SOLAR hEATINC ANC COOLING DEMONSTRATION PROGRAM


NChThLY REPORT
COLLECTOR ARRAY PERFORMANCE

SITE: SADDLE HILLS TRUST LCT #77, MEDWAYMA 02053SOLAR/1039-79/04
REPORT PERIOD: APRIL,1S79


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

SUM

AVG

NESID


INCIDENT
SOLAR
ENERGY
MILLICG
8TL

00023
0.023
007CC
0.025
S0C7E
0*025
0.106
0.089
0. 190
0.006
0.072
0.192
0.166
0.142
0.016
0.C37
0.027
0.088
0.141
0.107
C0171
0.187
C.1C6
0.177
0.177
0.104
0.099
0.014
0.116
C.062
0.147

2.900

0.097

Q001


OPERATIChAL
IhCICENT
EhEFCY
MILLION
BTU

0.005
00CO0
0.006
0.058
0.004
0.C66
0.056
0.178
0C000
0.045
C.leO
0.155
C.136
0.000
0.006

0.078
0.127
0.094
0.155
0.174
C. C2
0.166
0.165
o .oee
0.080
0.089
0.001
0.110
0.053
0.139

2.446

0.C62


COLLECTED
SOLAR
ENERGY
MILLION
BTU

0.003
0.000
0,003
0.026
0.002
0.033
0.022
0.058
0.000
0.017
0o 058
0.055
0.036
0.00
0.001
0.001
0.028
0.049
0.035
0.054
0.056
0.029
0.055
0.065
0.027
0.030
0.001
0.047
0.025
0.060

0.874

0.029
-------
0100O


DAYTIME
AMBIENT
TEMP
DEG F


45
38
46
51
43
46
40
45
35
43
54
58
57
42
46
46
53
55
55
61
70
65
74
73
77
72
61
76
65
73


56


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


COLLECTOR
ARRAY
EFFICIENCY


0.110
0.000
0.134
0.330
0.090
0.304
0.243
0.305
0.000
0.231
0.300
0.332
0.250
0.000
0.038
0.024
0.322
0.345
0 331
0.316
00297
0.271
0.312
0.368
0.263
0.305
0.058
0.403
0.399
0.405


0.302

N100







SOLAR EATING AhC CCCLINC DEMONSTRATION PROGRAM


MONTHLY REPORT
HOT WATER SUBSYSTEM


SITE: SADDLE HILLS TRLST LOT #77. MEDWAY.NA 02053
REPORT PERIOC: AFFIL.1979


SOLAR/1039-79/04


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


HCT
WATER
LOAD
MILLION
BTU

0.045
0.056
0.068
0.068
0.056
0.110
0.051
0.045
0.059
0.125
0.032
0.077
0.000
0.000
0.003
0.062
0.173
0.069
0.054
0.059
0.049
0.015
0.131
0.039
C.020
0.044
0.057
0.064
0.097
0.043

1.771

0.059

0302


SCLAI
FR.CF
LOAD
PER
CENT

22
10
7
12
18
22
14

41
34
30
50
0
C
9
33
35
28
22
38
66
45
56
40
36
38
40
38
37
19




N3 C
N3CC0


SOLAR
ENERGY
USED
NILLICh
BTU

0.002
0.000
0.002
0.022
0.002
0.028
0.018
0.048
0.000
0.014
0.048
0.047
0.027
0.000
0.001
C.000
0.023
0.041
0.029
0.044
0.025
0.023
0.030
0.058
0.008
0.017
0.001
0.041
0.022
0.050

0.672

0.022

0300


CFEF
ENERGY

NILLICh
BTU

h
C
T

A
F
P
F
L
I
C
A
e

















N.A.

I.A.

C303


AUX
ELECT
FUEL
MILLION
BTU


0
T

A
P
F
L
I
C
A
E
L
E


AUX
TIERIAL
USED
NILLICh
BTL

0.053
00C63
0.CE9
0 075
0.039
0.096
0.055
0C239
0.045
C0844
0.031
0.054
0.011
0.016
0.016
0.039
0 119
0.065
0.052
0.048
0.026
0.023
0.078
0.034
0.022
0.033
0.047
0.046
0.073
0.040

1.482

0.049

C301


AUX
FOSSIL
FUEL
MILLION
BTU

0.088
0 105
0.099
0.125
0.066
0.160
0.092
0.065
0.075
0.141
0.052
0.090
0.018
0,027
0.027
0.065
0.199
0.108
0.087
0.081
0.043
0.039
0.130
0.056
0.036
0.056
0.078
0.077
0.121
0.066

2.471

0.082

0306


ELECT
ENERGY
SAVINGS
MILLION
BTU

-0 000
0.000
-0.000
-0.004
-0.000
-0 003
-0.003
-0.006
0.000
-0.003
-0.007
-0.007
-0.005i
0.0001
-0.001

-0.005
-0.006
-0.006
-0.007
-0.006
-0.005
-0.007
-0.007
-0.005
-0. 006,
-0.000
-0.006
-0 0041
-0.007

-0.117
-- O--- -,-7


-0.004

0311


FCSSIL
ENERGY
SAVINGS
MILLION
BTU

0.007
0.008
0.007
0.018
0.014
0.046
0.014
0.034
0.038
0.050
0.021
0.063
0.000
0 0000
0.002
0.032
0.095
0.038
0.036
0.046
0.056
0.013
0.132
0.022
0.018
0.036
0.040
0.048
0.048
0.0201

1.001

0.033


0313


* DENOTES UNAVAILABLE DATA.
& DENCTES NULL DATA.
NeA. DENOTES NCT APPLICABLE CATA.


N.A.

3.A.

0305


SLP.
WAT.
TEMP
DEG
F

49
47
46
48
50
49
48
48
51
48
49
48
52
52
51
48
48
50
49
50
47
50
47,
47
51
55
49
51
53
551
-

50

N305


HOT
WAT.
TEMP
DEG
F

1481
143
1431
145
1411
138
141
142
136
143
144
142
141
141
140
140
146
145
141
142
139,
138
142
144
138,
139
145
143,
137
135

-

1411

N307


hOT
WATER
USED

GAL

50
69
85
82
70
142
60
56
76
1521
39
94
0
0
4
83
166,
97
691
72
62
19
167
50
26
57
74
831
127
61

2193

73

N308
-- I






SOLAR HEATING ANC CCCLING DEMONSTRATION PROGRAM

MONTHLY REPORT
ENVIRONMENTAL SUMMARY


SITE: SADDLE HILLS TRUST LCT 477. MECWAY.MA 02053
REPORT PERIOD: APRIL,197S


SCLAR/1039-79/04


DAY
OF
MONTH


1
2
3
4
5
6
7
8
to
S
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


TOTAL
INSCLATION

BTU/SC.FT

292
69
296
1002
222
1380
1147
2441
75
927
2461
2123
1826
207
471
345
1128
1806
1368
2191
2403
1389
2275
2270
1339
1275
175
1490
793
1887

37175

1239
---------1
0001


DIFFUSE
INSCLATICN

BTU/SQ FT

N
C
T

A
F
F
L
I
C
A
E
L
E















-.AI


ANEIENT
TEMPERATURE,

DEG F

45
38
42
40
40
38
37
39
35
39
45
49
43
38
41
41
42
44
44
45
49
52
59
58
60
63
61
64
60
62


b.A. 47

N1 13
------- ---------


CAYTIME
AMBIENT
TEMP
DEG F

45
38
46
51
43
46
40
45
35
43
54
58
57
42
46
46
53
55
55
61
70
65
74
73
77
72
61
76
65
73


RELATIVE
HUMIDITY

PERCENT

N
O
T

A
P
P
L
I
C
A
B
L
E


WIND
DIRECTION

DEGREES

N
C
T

A
P
P
L
I
C
A
B
L
E

















N.A.
NI15-
N115


i------- -----
WIND
SPEED

M.P.H.

N
0
T

A
P
P
L
I
C
A
B
L
E

















N.A.
N114
N114


* DENCTES LNAwAILABLE CATA.
8 DENOTES NULL DATA.
N.A. DEhCTES NCT APPLICAELE CATA.


'~0


56 N N.A.






































































C





UNIVERSITY OF FLORIDA
II 3ll 1262 09052 606III lllliiIi ii1111111 i
3 1262 09052 6061




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