Monthly performance report

MISSING IMAGE

Material Information

Title:
Monthly performance report Lutz-Sotire
Added title page title:
Lutz-Sotire
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 -- Connecticut -- Stamford   ( lcsh )
Solar heating   ( lcsh )
Heat pumps   ( lcsh )
Genre:
federal government publication   ( marcgt )
non-fiction   ( marcgt )

Notes

General Note:
National solar data program.
General Note:
Monthly Catalog Number: gp 80010091
General Note:
National solar heating and cooling demonstration program.
General Note:
"SOLAR/2027-79/02" ; "SOLAR/2027-79/03" ; "SOLAR/2027-79/04."

Record Information

Source Institution:
University of Florida
Rights Management:
All applicable rights reserved by the source institution and holding location.
Resource Identifier:
aleph - 027069747
oclc - 05908089
System ID:
AA00013829:00003


This item is only available as the following downloads:


Full Text
~-i m-'Cz~ -;cJ.L~Kc/fzA-c~A -~~


SOLAR/2027-79/04

Monthly
Performance

Report





LUTZ-SOTIRE
APRIL 1979



I \


U.S. Department of Energy

National Solar Heating and
Cooling Demonstration Program

National Solar Data Program


4291


_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.
I ~~ III I II III I I iiiiiii ii I I II








MONTHLY PERFORMANCE REPORT
LUTZ-SOTIRE
APRIL 1979

I. SYSTEM DESCRIPTION

The Lutz-Sotire solar energy system serves a three-story, 25,000-square
foot office building located in Stamford, Connecticut. This retrofit
system supplies energy to a distributed heat pump system consisting of
64 water-to-air heat pump units connected in a closed hydronic loop.
The solar collector array contains 2,561 square feet of collector area
consisting of 138 flat-plate collectors augmented by 2,927 square feet
of reflectors. The collectors are tilted at 55 degrees, the reflectors
at 10 degrees from the horizontal. A 50 percent ethylene glycol solution
is used as the energy collection and transport fluid. Solar energy is stored
in water contained in a 6,000-gallon storage tank partially buried beneath
the parking lot. From the storage tank, solar heated water is distributed
to the building's heat pump loop. The existing electrical hot water boiler
provides auxiliary energy.

Because the solar energy system supplies its energy to the heat pump
hydronic loop, the terminology normally used in the National Solar Heating
and Cooling Demonstration must be modified. Heating load normally applies
to energy added to the air of the conditioned space; however, in this
system it will be understood to refer to the energy demand on the equip-
ment supplying energy to the heat pump hydronic loop. This energy is
the sum of the solar and auxiliary energy extracted from those subsystem
reservoirs and whatever energy may be added to the hydronic loop by
individual heat pumps extracting heat from the conditioned space and
placing it in the hydronic loop (cooling mode).

The Lutz-Sotire solar energy system, shown schematically in Figure 1, has
the following modes of operation:


1 4291















Bml


* 15 COLLECTOR PLANE TOTAL INSOLATION
* O5 HORIZONTAL PLANE DIFFUSED INSULATION
ST001 OUTDOOR TEMPERATURE
STOMO INDOOR TEMPERATURE
* W00 TOTAL BUILDING POWER


TYPICAL PACKAGED UNIT HEAT PUMP
WITH AUXILIARY HEAT.EXCHANGER.
LOBBY 4 UNITS
*EPS6O TOTAL POWER
FIRST FLOOR 30 UNITS
EPW0 TOTAL POWER
SECOND FLOOR 30 UNITS
*EPE0S TOTAL POWER


Figure 1. LUTZ-SOTIRE SOLAR ENERGY SYSTEM SCHEMATIC


CENTRAL
CORE
AIR
CONDITIONING
UNIT


REVISED 1m/17









Mode 1 Collector-to-Storage: This mode is initiated whenever the
collector plate temperature is approximately 200F above the solar tank
temperature. This mode is exited when this temperature differential
drops below 50F.

Mode 2 Storage-to-Space Heating: This mode is initiated whenever the
supply temperature of the closed cycle hydronic loop falls below 80F
and the temperature of the solar storage tank is above 750F. Solar
heated water is fed into the hydronic loop until its temperature rises
to 800F or until the temperature of the solar storage tank falls below 750F.

Mode 3 Auxiliary Heating: This mode is activated whenever the supply
temperature of the closed cycle hydronic loop falls below 750F. Water
heated by the existing electrical boilers will be fed into the hydronic
loop until the supply temperature rises to 750F.

II. PERFORMANCE EVALUATION

The system performance evaluations discussed in this section are based
primarily on the analysis of the data presented in the attached computer-
generated monthly report. This attached report consists of daily site
thermal and energy values for each subsystem, plus environmental data.
The performance factors discussed in this report are based upon the
definitions contained in NBSIR 76-1137, Thermal Data Requirements and
Performance Evaluation Procedures for the National Solar Heating and
Cooling Demonstration Program.

A. Introduction

The Lutz-Sotire solar energy system was operational throughout the month
of April. It supplied 21.8 million Btu of energy to the hydronic loop
serving the several heat pumps whose total demand was 23.6 million Btu.
This represented 81 percent of the total energy supplied to the heat pump
array and an estimated 62 percent of the space heating load.


3 4291







Direct measurement of both the solar and auxiliary energy contributions
to the hydronic loop are precluded by instrumentation problems. Estima-
tions of these parameters based upon other measured data have been
substituted for the missing measured data which has been nulled from the
individual subsystem reports.

B. Weather

The average ambient temperature for the month was 480F. This is compared
with 520F for a long-term average taken at the Bridgeport, Connecticut,
weather station 30 miles to the north. The average insolation in the
plane of the collector array was 1,234 Btu/ft2-day as compared with 1,269
Btu/ft2-day long-term average. This long-term prediction was obtained
from the New York weather station 30 miles to the south.

C. System Thermal Performance

Collector Of the 94.8 million Btu incident upon the collector array
during the month, 29.4 million Btu were collected. This represents a
collector array efficiency of 31 percent. Operating energy of 2.4
million Btu (694 kwh) was required to collect and store this energy.

Storage From the 29.4 million Btu collected, 25.7 million Btu were
delivered to storage. Diminished usage of the system in the heating
mode allowed the average storage tank temperature to increase to 1190F.
Because of an instrumentation incompatibility, energy removed from
storage as normally tabulated on the Storage Performance Report has been
nulled and a better estimate is obtained assuming the uncontrolled
losses are 10 percent of the input energy and using the equation:


STEI = STEO + STECH + STLOSS


4 4291








Solving for STEO


STEO = STEI STECH STLOSS
= STEI STECH (0.1 X STEI)
= 25.7 1.3 2.6
= 21.8 million Btu


Space Heating Space heating at the Lutz-Sotire site is accomplished by
64 individual heat pumps which use as their source a hydronic loop whose
temperature is maintained by solar and auxiliary sources. There is no
direct contribution to the space heating load by solar energy. A tabu-
lation of the energy removed from the hydronic loop by the heat pumps
has been listed under the heading Space Heating Load on the Space Heat-
ing Subsystem report. This demand has resulted in a measured 23.6 million
Btu being removed from the hydronic loop. A further discussion of this
quantity is contained in Section D, Observations.


D. Observations


Using a technique developed in the December (Narrative) report on this
site, a comparison figure for the hydronic loop demand as measured may
be calculated. It should be noted that the total energy extracted from
the hydronic loop should not be greater than the total energy collected
plus the auxiliary electrical energy demand, for there are known uncon-
trolled losses to the environment. The energy removed from storage has
already been calculated as 21.8 million Btu. It will be assumed that all
of this energy was inserted into the hydronic loop.

Because the temperature of the auxiliary storage tank is known to be maintained
at a higher temperature than the solar tank, the losses will be assumed to be
20 percent of the total energy supplied. All of the remaining energy con-
sumed by the electric boiler will be assumed to have been supplied to the


5 4291






hydronic loop. As may be seen on the Space Heating Subsystem report,
the total auxiliary energy consumed was 6.5 million Btu. It will be
assumed that 80 percent of this energy or 5.2 million Btu was actually
inserted into the hydronic loop. It may be seen that the sum of the
solar and auxiliary energy added to the hydronic loop is 27.0 million
Btu. This figure is in reasonably good agreement with the measured load
of 23.6 million Btu.

It is believed that the total energy input to the hydronic loop is more
nearly approximated by the sum of the auxiliary and solar energy contri-
butions (modified for losses) than is the direct measurement at the load.
Under this assumption, the solar fraction of the load can be calculated as

FR solar energy
SFR solar energy + auxiliary energy + heat pump electrical energy

21.8
S 21.8 + 5.2 + 8.2 62 percent.


E. Energy Savings

Based on the assumptions and calculation shown above, a total of 19.4
million Btu of electrical energy savings was realized. This value
assumes that had there been no solar energy system, all energy supplied
to the hydronic loop would have come from the auxiliary source.

Ill. ACTION STATUS

A thorough reevaluation of the instrumentation subsystem at the site is in
progress. Under consideration are:

(1) Increasing the existing voltage to all flowmeters and electrically
converting them to totalizing meters, thus reducing threshold
sensitivity to 5-7 gpm.

(2) Investigating and recalibrating where necessary all temperature
sensors involved in the heat pump hydronic loop energy balance
calculations.


6 4291









SOLAR- HEATING Ah- CGC-LING EESC-NSTRATIGN PRCCRAM
cINTFLV REPORT
SITE St-S APT


SITE. .LUTZ-SOTLRE _STAMECRD, C.T. SOLAR/2027-79/04
REPORT PERIOD; APPILl979

SILUTZ-SOETI S I PIA 3 CCRY OFFICE BUILCIfNG hklH 25,000 SQUARE FEET
OF-HEATED SPACE.- THE SOtAR ENERGY SYSTE-t- IS A R-TROFIT-TO A DISTRI-
BUTED HEAT- PUMF SYSTEIr CONSISTING OF iC WATER-TC-AIR HEAT FUMP UNITS
CONNECTED IN A CLCSE CYCLE HYCERONIC LCCP. THE SOLAR SYSTEM CONSIST
OF 138 FLAT PLATE CQLLECTCRS AUGMENTEC BY REFLECTCRS. A 5C% ETHYLENE
GLYCOL-SOLUTtCN CIRCULATES THPFUGH THE COLLECTORS TO A LIQUID-TO-
LIQUID HEAT EXCHANGER. WATER FROM THE 6,CCC GALLON ST-RAGE TANK
CIRCULATES THRCUGI THE CTHER SIDE. FRCM THE STORAGE TANK SOLAR HEATED
WATER IS ALSC CISTRIELTED TO TIE BUILDING'S HEAT PUMP LOOP.


GENERAL SITE DATA:
INCIDENT SOLAR ENERGY


COLLECTED SOLAR ENERGY
AVERAGE AMBIENT TEMPERATURE
AVERAGE BUILDING TEMPERATURE
ECSS SOLAR CCNVERSICN EFFICIENCY
ECSS OPERATING ENERGY
TOTAL SYSTEM CPERATIGC ENERGY
TOTAL ENERGY CCNSLMEC


94.783
37010
29.381
11472
48
73
a
2.369
4.839
40.754


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 LSED
OPERATING ENERGY
AUX. THERMAL ENERGY
AUX. ELECTRIC- FUEL
AUX. FOSSIL FUEL
ELECTRICAL SAVINGS
FOSSIL SAVINGS


FCT WATER
N.A.
N.A.
N.A.
,N A.
N .A.
N.A.
N.A.
N-A.
NoA
N1 A


HEATING
23.627

2.47C
6. 534
I .A.
t.A.


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


SYSTEM TOTAL
3.142 MILLION
a PERCENT
3 MILLION
4.839 MILLION
0.347 MILLION
6.534 MILLION
N.A. MILLION
a MILLION
N.A. MILLION


SYSTEM PERFORMANCE FACTOR:


C.CE2


* DENOTES UNAVAILABLE CATA
8 DENOTVE S- N UL-L---- TA
N.A. DENOTES NOT-APPLICABLE CATA
REFERENCE-: USER'S GUICE TC THE ICNTHLY PEPFCPRVNCE REPORT
OF--THE -NA--IONAL- SOLAR DATA -FPR-G-RA V FEBRUARY 28,197E,
SOLAR/C0 4-7/ 18


BTU
BTU
BTU
BTU
BTU
BTU
BTU
BTL








SOLAR hEATING ANC CCCLING CEFCNSTRATIGN PROGRAM


VCNTHLY PEFCFT
SITE SUtMMAP-


SITE: LUTZ-SOTIRE STAFFCRD, CT.
REPORT PERIOD: APRIL,1979


SOLAR/2027-79/04


SITE/SYSTEM DESCRIPTION:
LUTZ-SOTIRE IS A 2 STCRY OFFICE BUILDING kITH 25,000 SQUARE FEET
OF HEATED SPACE. THE SOLAR ENERGY SYSTEM IS-A RETROFIT TC A DISTRI-
BUTED HEAT PLNP S\STEv CONSISTING OF 70 hATER-TC-AIR HEAT FUMP UNITS
CONNECTED IN A CLCSEC CYCLE IFCPCNIC LCCP. THE SOLAR SYSTEM CONSIST
OF 138 FLAT PLATE CCLLECTCRS A GMENTEC EY REFLECTORS. A 5C% ETHYLENE
GLYCOL SOLUTION CIPCLLATES THPCLGH THE CCLLECTCPS TO A LIQUID-TO-
LIQUID HEAT EXCHANGER. WATER FRCM THE 6,CCC GALLON STORAGE TANK
CIRCULATES THRCUGh T-E CTHER SINCE. FRCM THE STORAGE TANK, SOLAR HEATED
WATER IS ALSC CISTRIBLTED TC T1E BUILDING'S HEAT PUMP LOOP.
GENERAL SITE DATA:
INCIDENT SOLAR ENERGY 99.99


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


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


FCT WATER
N .A.
N .A.
N .A.
S.A.
N.A.
l.A.
N A.
N.A.
N A.
N AP


FEATINC
24.9,27
a


6.894
N.A.
a
Sf C f.


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


6 GIGA JOULES


420288 KJ/SC.M.
30.997 GIGA JOULES
130280 KJ/SC.M.
9 DEGREES C
23 DEGREES C
N.A.
2.499 GIGA JOULES
5.105 GIGA JOULES
42.995 GIGA JOULES

SYSTEM TOTAL
3.315 GIGA JOULES
@ PERCENT
a GIGA JOULES
5.105 GIGA JOULES
0.366 GIGA JOULES
6.894 GIGA JOULES
N.A. GIGA JOULES
2 GIGA JOULES
N.A. GIGA JOULES


SYSTEM PERFORMANCE FACTCP:


0 .C3


* DENOTES UNAVAILABLE CATA
3 DENOTES NULL CATA
N.A. DENOTES NGT APPLICABLE CATA
REFERENCE: USER'S GUICE TC THE MCNTHLY PEPFCRMANCE REPORT
OF THE NATIONAL SOLAR CATA PRCGRANFEBRUARY 28,197E,
SCLAR/CCC4-7E/18






SCLAR HEATING AND CCCLING CEfCNSTRATION PROGRAM
MONTHLY REFCRT
EhERGY COLLEC7ICN AhC STCPAGE SUBSYSTEM (ECSS)
SITE: LUTZ-SOTIRE STAMFCRD!, CT.
REPORT PERIOD: APRIL,Il7c


SOLAR/2027-79/04


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
NBS ID


INCIDENT
SOLAR
ENERGY
MILLION
BTU
4.005
0.081
0.381
0.800
2.865
4.472
5.978
4.391
0.132
4.827
5.405
3.676
4.431
0.234
0.002
1.030
2.484
4.950
5.193
5.391
5.241
4.233
5.145
4.943
1.068
0.328
0.234
2.533
4.500-
5.032
94.783
3.159
Q001


AMEIENT
TE

CEGC-F

39
44
238

42
29

47
38
c5


42


46
53
44
39
41
42
46
47
4E
46
C


52
63









N123


ENERGY
iC
LC iDS
MILLION
BTL
C .0CC
0.774
CCCCc
CC 2CO
C.2C0
C .1CO
C .243
C.411
C.OCO
C.CCO
C0.144
C CCO
C .101
C CCO
0 C39
C.CCO
C .CCO
CCCC
C.CCO
C .0CC
C CCO
C .CO
c .000
C.CCO
C .CCO
C .CEC
C.151
C .C89
2.795
C.C93


AUX
THERIVPAL
1T ECSS
FILLICh
BTL
h
C

A
F
F
I
C

L
E


N.A.


ECSS
OPERATING
-ENERGY
BILLION
BTU
C.160
0.000
C.000
C.000
0.141
0.121
0.168
0.112
C000
0.177
0.143
0.075
0.105
C.000
0.035
0.032
0.094
0.154
0.126
0.132
0.124
0.062
0.109
0.091
C.000
0.000
C.000
0.082
0.127
0.001
2.369
0.079
Q102


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













N.A.
N.A.


ECSS SOLAR
CCNVERSICN
EFFICIENCY


a
a
a
a



a
a
a
a
a

8
a
a
a
a
a
a
a

a
a
a
a
a
a

N


N111


* CENOTES UNAVAILABLE.CATA.
a DENOTES NULL DATA.
N.A. DENOTES NOT APPLICABLE C-ATA'






SCLAR HEATING ANC CCCLING CEECNSTRATION PROGRAM
MONIR[Y REPORT
CCLLECTCR ARPPY PEPFCRMANCE


SITE: LUTZ-SCTIRE STAPFCPD, CT.
REPORT PERICCE APRIL,19S


SCLAR/2027-79/04


DAY
OF
MONTH


1

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
NBSIC


IhCICENT
SCLAP
ENEPGY
MILLION
eTL
4.005
C.CEI
C.381
C.8C0
2.865
4472
.978
4.391
0.132
4. 27
5.4CS
3,676
4.431
C.234
C.8C2
1.C30
2.484
4.95C
5.193
5.391rI
5.241
4.233
5.145
4.943
C,32E
0,234
2.533
4.5CC
5.032
S4.783
3.159


CPEFATIONAL
INCI CENT
El ERGY
MILLION
ETU
3.731
C.000
C.000
C .000
2.419
3.748
5.222
2.456
C.OOC
4.414
4.758
.213
3.161
C.475
C.5C5
1.76?
4.217
4.122
4.226
4.018
2.187
.3597
3.126
C.000
C.000
2.045
3.687
C .C59
17.150
2.238


CCLLECTEC
SCLAP
ENEPGY
MILLICN


C .CCC
C.CCC
C .CSCO

2.2C95
C.S24
C.377
1 .6C2
C .CCC
2 .2C8
2 .295
C 924
CCCC
C .254
C .-f 8
1.891
1.643


1 556
1. 1C3
C .CC
C.CCO
C.CCO
C.976
1 788
C.C12
29.281
C.979
C10C


DAYTIME
AM21 ENT
TEMP
DEG F

59
37
48
43
51
46
42
47
37
48
58
64
-47
40
44
44
53
56
56
58
63
65
76
70
61
58
57
59
65
68


* DENOTES UNAVAILABLE CATA.
8 DENOTES NLLL CATA.
N.A. DENOTES NCT APPLICABLE DATA.


COL LECTOR
ARRAY
EFFICIENCY


0.490
0.000
0.000
0.000
0.382
0.412
0.398
0.365
0.000
0.458
0.425
0.251
0.223
0.000
0.247
0.247
0.277
0.382
0.316
0.282
0.323
0.181
0.302
0.223
0.000
0.000
0.000
0.385
0.397
0.002


0.310
N100--







SOLAR hEATING AI\C-CCGCLIG -CEFCNSTRATICN PROGRAM
MONTHLY REPORT
STORAGE PERFCFPANCE


SITE: .,LLTZ-SCTIRE STAVF.CRD, CT.
REPORT PERICC: APRIL,1S79


SOLAR/2027-79/04


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 IC


ENERGY
TC
STORAGE
MILLI-CN
ETL
1.8C2
c.ccc
ceoco
S.0CC
1. C8-1
1.711
2.216
1.4C7
c OCO
1.946
2. C83
C.705
C.7e85
0 CCO
0.175
C.157
C.673
1.721
1.394
1.189
1.169
C.61C
1.234
C.940
C OCO
C.CCC
C.CCO
C.876
1.7196
C.OCC
25.672
C.856
C200


ENERGY
FRCM
STORAGE
MILLION
eTU
a

a

a
a
a
0

a

a
*3

a

a
a
a
a
a
a
a
a








(201
8
a
a
a
a
. 8a
a
a
a


ChANGE
IN STCPEC
ENEPGY
MILLION
ETL
1 .54
-2.C49
-C.121
-C.1C2
C *-31-7
1.2CS
C.56C
-C.257
-1.597
1.981
1.33C
-C .296
C.103
-1. E61
-C.E29
C.C29
C .494
1.526
C. 28
C.E65
C.390
-C.368
C.393
C.ClI
C .C15
-1.214
-C.998
-C 975
C.C11
1.218
-1.C29
1.33C
C.C44
Q2C2


119


STORAGE
AVERAGE
TEMP
DEG F

103
95
79
77
82
99
110
116
85
99
128
144
140
124
89
87
94
111
136
154
164
165
165
169
159
136
116
108
116
120


N108


* DENOTES UhAVAILABLE CATA.
a DENOTES NLLL CATA.
N.A. DENOTES NCT APPLICABLE DATA.


STORAGE
EFFICIENCY


a
a
a
a
a
a
a
a
3
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a


a
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@

@






SOLAR-HEATING ANC CCCLIAG CEMCKSTRATIN PROGRAM
FCrITHLY PE PCRT
SPACE HEATING SLESYSTEM


SITE: LUTZ-SOTIRE STAMFORD,
REPORT PERIOD: APRIL,1979


CT.


SOLAR/2027-79/04


CAY
OF
MONC-.


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
0.325
1.765
0.785
1.481
-0.683
1.189
1.669
2.142
2.470
1.055
0.654
0.425
0.440
1.321
1 449
1.293
0.542
0.406
0.360
0.334
0.380
0.502
0.243
0.200
0.240
0.1771
0.201
0.305
0.376
0.216
23.627
0.788
Q402


SOLAR
FR.OF
LOAD-
PCT



@I
;@
a@
a

,@

a
a@
a

a,
a

a
a
a
a




N400


SOLAR
ENERGY
US-EO
MILLION
BTt
a
a
a
a
a.
a
a
a
a
8


a
a,
a.


a
a
a
a
a,
a.



a
3






a
a,
a.



a
a
a,

a.
a.
a
a
a
a,
3




a
a
a,
a.




a
a
8
a
a
a
8
a
a
<*>
a
a





040C


GPER
E EP GY
MILLION
eT'
C,05e
C.101
0.118
C.143
S.08-3
C.118
0.122
C.113
C.136
C.104
C.068
C .061
C.072-
0.1271
137
C.149
0.095
C.C56
0.065
S0066
C.093
C.105
0.047
C.04
C .046
C.031
C,035
0.038
C.010
C.030
2,47C
C.C82
C403


AUX
THERMAL
LSED
MILLION
ETU
a
a.














a
a
a
a
a
3
3




a.

a,
a.


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


AUX
ELECT
FUEL
VILLICN
BTU
C0.CCC
C .68s
C.35C
0 .29
0.447
C .262
C.155
C. 1CC
0.557
C.338
C.132
0.C94
0.134
0.224
C. 4C
0.332
0.C64
C 124
C C5C
0 C51
0.C62
0.C3CE
0 .G-C
C .CCC
C.CCC
0.CCC
00C1
C.CCC
6.534
0.218


ELECT
ENERGY
SAV WINGS
MILLION
BTU


a
a
a
a
a























.Q415
..@
@
@
@
@
@
@
@
@
@
8 1


FOSSIL
ENERGY
SAVINGS
MILLION
BTU
N
0
T



L
I.
C
A
B
LI
E













N.A.
N.A.

0417


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


N.A.
N.A.
Q410


BLDG
TEMP
DEG.
F
76
71
73
71
74
72
70
68
71
72
75
76
-75
72
70
71
73
75
75
75
74
73
76
76
76
77
76
76
73
74


73'
N406


AMB
TEMP
DEG.
F
53
39
44
38
43
39
37
38
35
42
48
53
44
39
41
42
46
47
48
48
50
52
63
58
56
57
56
54
59
57


48
N113





SCLAR HEALING ANC CCCLING CEMCNSTRATICh PROGRAM
MCNTHL' REPORT
ENVIRCNMENIAL SUMMARY


SITE: LUTZ-SOTIRE STAMFCRD, CT.
REPORT PERIOD: APRIL.1979

DAY TOTAL CIFFUSE ANBIENT
OF INSOLATICN INSCtATION TEMPERATURE
MONTH
____BTU/SQ.FT ETU/SCFT CEG F
1 1564 e88 53
2 31 19 39
3 149 106 44
4 312 242 3
5 1119 729 43
6 1746 747 39
7 2334 857 37
8 1715 982 38
9 52 31 35
10 1885 648 42
11 2110 977 48
12 1435 1C92 53
13 1730 1155 44
14 91 62 39
15 313 236 41
16 402 314 42
17 970 817 46
18 1933 1257 471
19 2028 1301 48
20 2105 1284 48
21 2046 1286 5C
22 1653 1238 52
23 2009 1332 63
24 1930 1219 5CE
25 417 326 56
26 128 87 57
27 91 61 56
28 989 891 54
29 1757 1362 Ec
30 1965 1370 57
SUM 37010 22916
AVG 1234 764 48
NBS ID Q001 N113

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


SOLAR/2027-7 T704


CAVTIME
AMEtENT
TEMP
CEG F
59
37
48
43
51
46
42
47
37
48
58
64
47
40
44
44
53
56
56
58
63
65
76
7C
61
58
57
59
65
68


54


RELATIVE
HUMIDITY
PIERCE T

C


F
F
L
I
C
A
E
L
E














t.A.


WIND
DIREC;-TI ON
DEGREES
N
0
T
A
P
P
L
I
C
A
B
L
E














N.A.
N115


-------------
WIND
SPEED
M.P.H.


T























Nl14
A
P
P
L
I
C
A
B
L
E














N.A.
N114
































8





UNIVERSITY OF FLORIDA
111111 III1 1120111111 111111 ll ll l6lB 111111111111
3 1262 09052 5386




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