RONOLO 's

OF THE DOE RAe SIMULATION

1/04 AHAM ADVISED THAT LBL MUST AVE OUR

RESPONSE ON THE REVISED SIMULATION

MODEL BY 1/15.

1/08 DISK WITH REVISED MODEL RECEIVED BY

AHAM AND DISTRIBUTED TO EVALUATION

COMMITTEE.

1/1 6 COMMITTEE CONCLUDES

STILL NOT READY.

MODEL IS

1/1 LBL ADVISED OF FOUR ISSUES STI

NEEDING RESOLUTION.

/06 DISK WI H REVISED MOD L RECEI ED BY

AHAM AND DISTRIBUTED TO EVALUATION

COMMITTEE.

2/08 DEADLINE EXTENSION REQUESTED AND

REJECTED, BUT LBL GIVEN UNTIL 2/15 TO

RECEIVE MORE COST DATA.

2/28 FINAL COMMITTEE MEETING TO REVIEW

R SULTS 0 EST EVA ION.

(ASSUME L /1

DEAD IN .)

AHAM PAGE 1 OF 6 4/07/94

EE-RM-90-201 COMMENT OOG11

RONOLO 's 

OF THE DOE RAe SIMULATION 

UATION 

ELIN1991 

1/04 AHAM ADVISED THAT LBL MUST HAVE OUR 

RESPONSE ON THE REVISED SIMULATION 

MODEL BY 1/15. 

1/08 DISK WITH REVISED MODEL RECEIVED BY 

AHAM AND DISTRIBUTED TO EVALUATION 

COMMITTEE. 

1/1 6 COMMITTEE CONCLUDES THAT MODEL IS 

STILL NOT READY. 

1/1 LBL ADVISED OF FOUR ISSUES STI L 

NEEDING RESOLUTION. 

/06 DISK WITH REVISED MOD L RECEIVED BY 

AHAM AND DISTRIBUTED TO EVALUATION 

COMMITTEE. 

2/08 DEADLINE EXTENSION REQUESTED AND 

REJECTED, BUT LBL GIVEN UNTIL 2/15 TO 

RECEIVE MORE COST DATA. 

2/28 FINAL COMMITTEE MEETING TO REVIEW 

RESULTS 0 LATEST EVA ATION. 

(ASSUME L AD M 2/15 

DEADLIN .) 

AHAM PAGE 1 OF 6 4/07/94 
BASIC CONe IONS 0 NAL EVALUATION

THE DOE RAC SIMULATION MODEL, 2/28/91

"THERE IS NO SPECIFIC DATA AVAILABLE AT THIS

TIME TO JUDGE HOW WELL THE SIMULATION

MODEL CAN PREDICT THE EFFECT OF DESIGN

OPTIONS ON EFFICIENCY."

THE TSD WILL NEED TO BE ANALYZED TO

DETERMINE WHETHER THE PREDICTIONS MAD BY

DOE ARE REASONABLE.

HOPEFULLY THERE WILL BE SUFFICIENT TIME

WITHIN THE COMMENT PERIOD TO MAKE AN

ADEQUATE ANALYSIS.

PAGE 2 OF 6 4/07/94

EE-RM-90-201 COMMENT OOG11

BASIC CONCLU IONS OF NAL EVALUATION F 

THE DOE RAC SIMULATION MODEL, 2/28/91 

"THERE IS NO SPECIFIC DATA AVAILABLE AT THIS 

TIME TO JUDGE HOW WELL THE SIMULATION 

MODEL CAN PREDICT THE EFFECT OF DESIGN 

OPTIONS ON EFFICIENCY." 

THE TSD WILL NEED TO BE ANALYZED TO 

DETERMINE WHETHER THE PREDICTIONS MADE BY 

DOE ARE REASONABLE. 

HOPEFULLY THERE WILL BE SUFFICIENT TIME 

WITHIN THE COMMENT PERIOD TO MAKE AN 

ADEQUATE ANALYSIS. 

PAGE 2 OF 6 4/07/94 
DESIGN OPTIONS USED BY DOE TO ACHIEVE LEVEL 5 EER'S FOR RAe's

Based on capacities & EER's from DOE simulation; see pages 1-24 to 1-38 of TSD.

VERAGE EFFECT OF DESIGN OPTIONS:

No. of Average Change

Design Option Classes Average EER Increase Capacity Power Applied

To Btuh/watt Per Cent Per Cent Per Cent

Subcooler 12 0.39 4.3% 1.6% -2.6%

Grooved Tubes 7 0.33 3.5% 6.1 % 2.5%

Evap & Cond

Grooved Tubes 3 0.12 1.1 % 0.7% -0.4%

Cond only

Enhanced Fins 4 0.37 4.5% 3.4% -1.1 %

Evap & Cond

PSC Fan Motor 4 0.59 6.8% 0.0% -6.3%

Compressor EER Increase in unit EER = 82% of increase in compressor EER

(Classes 1 to 5) % increase in unit EER = 89 % of % increase in compressor EER

MINIMUM AND MAXIMUM EFFECT OF DESIGN OPTIONS:

No. of Min./Max. Change

Design Option Classes Min./Max. EER Increase Capacity Power Applied

To Btuh/watt Per Cent Per Cent Per Cent

Subcooler 12 0.27 2.9% 0.9% -3.5%

0.56 5.7% 2.4% -1.7%

Grooved Tubes 7 0.20 2.1% 4.4% 2.1%

Evap & Cond 0.52 5.7% 8.5% 2.8%

Grooved Tubes 3 0.09 0.8% 0.5% -0.4%

Cond only 0.15 1.4% 0.9% -0.3%

Enhanced Fins 4 0.22 2.7% 2.3% -2.3%

Evap & Cond 0.51 6.4% 4.0% 0.4%

PSC Fan Motor 4 0.54 6.4% -0.3% -7.1 %

0.64 7.4% 0.2% -5.9%

AHAM PAGE 3 OF 6 4/07/94

EE-RM-90-201 COMMENT OOG11

DESIGN OPTIONS USED BY DOE TO ACHIEVE LEVEL 5 EER'S FOR RAe's 

Based on capacities & EER's from DOE simulation; see pages 1-24 to 1-38 of TSD. 

t\ VERAGE EFFECT OF DESIGN OPTIONS: 

No. of Average Change 

Design Option Classes Average EER Increase Capacity Power Applied 

To Btuh/watt Per Cent Per Cent Per Cent 

Subcooler 12 0.39 4.3% 1.6% -2 .6 % 

Grooved Tubes 7 0.33 3.5% 6.1 % 2.5% 

Evap & Cond 

Grooved Tubes 3 0.12 1.1 % 0.7% -0.4% 

Cond only 

Enhanced Fins 4 0.37 4.5% 3.4% -1.1 % 

Evap & Cond 

PSC Fan Motor 4 0.59 6.8% 0.0% -6.3% 

Compressor EER Increase in unit EER = 82% of increase in compressor EER 

(Classes 1 to 5) % increase in unit EER = 89% of % increase in compressor EER 

MINIMUM AND MAXIMUM EFFECT OF DESIGN OPTIONS: 

No. of Min./Max. Change 

Design Option Classes Min./Max. EER Increase Capacity Power Applied 

To Btuh/watt Per Cent Per Cent Per Cent 

Subcooler 12 0.27 2.9% 0.9% -3 .5 % 

0.56 5.7% 2.4% -1.7% 

Grooved Tubes 7 0.20 2.1% 4.4% 2.1% 

Evap & Cond 0.52 5.7 % 8.5% 2.8% 

Grooved Tubes 3 0.09 0.8% 0.5% -0.4% 

Cond only 0.15 1.4% 0.9% -0.3% 

Enhanced Fins 4 0.22 2.7% 2.3% -2.3% 

Evap & Cond 0.51 6.4% 4.0% 0.4% 

PSC Fan Motor 4 0.54 6.4% -0.3% -7 .1 % 

0.64 7.4% 0.2% -5.9% 

AHAM PAGE 3 OF 6 4/07 / 94 
KNOWN ISSUES AS OF 4/07/94

NEED FOR LARGER SIZE CHASSIS TO MEET THE

PROPOSED LEVEL 5 STANDARDS.

AVAILABILITY OF 11.5 AND 12.0 EER COMPRESSORS.

CLASSES FOR REVERSE CYCLE MODELS.

FATE OF THE THROUGH-THE-WALL MODELS WITHOUT

SIDE LOUVERS.

AHAM PAGE 4 OF 6 4/07/94

EE-RM-90-201 COMMENT OOG11

KNOWN ISSUES AS OF 4/07/94 

NEED FOR LARGER SIZE CHASSIS TO MEET THE 

PROPOSED LEVEL 5 STANDARDS. 

AVAILABILITY OF 11.5 AND 12.0 EER COMPRESSORS. 

CLASSES FOR REVERSE CYCLE MODELS. 

FATE OF THE THROUGH-THE-WALL MODELS WITHOUT 

SIDE LOUVERS. 

PAGE 4 OF 6 4/07 /94 
ANALYSES ALREADY INITIATED

TEST AND SIMULATION MODEL DATA TO COMPARE

TO DOE'S PROJECTIONS FOR THE DESIGN OPTIONS.

SURVEY TO DETERMINE THE EXTENT TO WHICH THE

DESIGN OPTIONS ARE ALREADY BEING USED.

EVALUATION OF ACTUAL VERSUS RATED

COMPRESSOR PERFORMANCE.

DATA ON EER LOSS DUE TO REVERSING VALVE IN

REVERSE CYCLE MODELS.

REVIEW OF MANUFACTURERS' COST FOR DESIGN

OPTIONS.

AHAM PAGE 5 OF 6 4/07/94

EE-RM-90-201 COMMENT OOG11

ANALYSES ALREADY INITIATED 

TEST AND SIMULATION MODEL DATA TO COMPARE 

TO DOE'S PROJECTIONS FOR THE DESIGN OPTIONS. 

SURVEY TO DETERMINE THE EXTENT TO WHICH THE 

DESIGN OPTIONS ARE ALREADY BEING USED. 

EVALUATION OF ACTUAL VERSUS RATED 

COMPRESSOR PERFORMANCE. 

DATA ON EER LOSS DUE TO REVERSING VALVE IN 

REVERSE CYCLE MODELS. 

REVIEW OF MANUFACTURERS' COST FOR DESIGN 

OPTIONS. 

AHAM PAGE 5 OF 6 4 /07/94 
PROPOSED ANALYSES

DATA ON EER LOSS DUE TO REMOVAL OF SIDE

LOUVERS.

EFFECT OF DOE PROJECTIONS ON LATENT COOLING

CAPACITY.

SURVEY TO DETERMINE THE NUMBER OF BASIC

MODELS IN WHICH REFRIGERANT CHARGE IS

ALREADY AT THE LIMIT OF COMPRESSOR

MANUFACTURERS SPECIFICATIONS.

AHAM PAGE 6 OF 6 4/07/94

EE-RM-90-201 COMMENT OOG11

PROPOSED ANALYSES 

DATA ON EER LOSS DUE TO REMOVAL OF SIDE 

LOUVERS. 

EFFECT OF DOE PROJECTIONS ON LATENT COOLING 

CAPACITY. 

SURVEY TO DETERMINE THE NUMBER OF BASIC 

MODELS IN WHICH REFRIGERANT CHARGE IS 

ALREADY AT THE LIMIT OF COMPRESSOR 

MANUFACTURERS SPECIFICATIONS. 

AHAM PAGE 6 OF 6 4 / 07 / 94