# DOE1NIST

FURNACE/BOILER TEST PROCEDURE
George E. Kelly 

## Building Environment Div. NIST 

# DOE/NIST FURNACE/BOILER 

# TEST PROCEDURE
George 

## E.. Kelly Building Environment Div. 

## NIST



# -

# ASSUMPTION :

FURNACES OR BOILERS ARE INSTALLED INDOORS, OUTSIDE, OR IN ISOLATED COMBUSTION APPLICATIONS 

# IF INSTALLED INDOORS, THEN JACKET LOSSES NO DUCT LOSSES * NO HEAT GAIN FROM CHIMNEY VENT PIPES ASSUMPTIONS: 

# * FURNACES OR BOILERS ARE INSTALLED INDOORS, OUTSIDE, 

# OR IN ISOLATED COMBUSTION APPLICATIONS 

# * IF INSTALLED INDOORS, THEN NO JACKET 

# LOSSES 

# * NO DUCT LOSSES 

# * NO HEAT GAIN FROM CHIMNEY OR VENT PIPES

# TEST PROCEDURES:

* MEASURE STEADY STATE EFFICIENCY * MEASURE STEADY STATE FLUE GAS TEMPERATURE AND C02CONCENTRATION OBTAIN INFORMATION ON SHAPE OF F TEMPERATURE COOL-DOWN AND WARM-UP PROFILES 

# OPTIONAL TRACER GAS TEST FOR POWER BURNERS TEST PROCEDURES: 

# * MEASURE STEADY STATE EFFICIENCY 

# * MEASURE STEADY STATE FLUE GAS TEMPERATURE AND CO2 

## CONCENTRATION 

# * OBTAIN INFORMATION ON SHAPE OF FLUE GAS TEMPERATURE 

# COOL-DOWN AND WARM-UP 

# PROFILES 

# * OPTIONAL TRACER GAS TEST FOR POWER 

# BURNERSASSIGNED FACTORS: S/F THE RATIO OF-STACK MASS FLOW RATE TO FLUE MASS FLOW

RATE UNDER STEADY STATE OPERATION.
DF

DS - THE RATIO OF FLUE MASS FLOW RATE DURING THE OFF-PERIOD

TO FLUE MASS FLOW RATE DURING THE ON-PERIOD AT IDENTICAL TEMPERATURES.
THE RATIO OF STACK MASS FLOW RATE DURING THE OFF-PERIOD TO STACK MASS FLOW RATE DURING THE ON-PERIOD AT IDENTICAL TEMPERATURES.
- THE FRACTION OF COMBUSTION , RELIEF AND DRAFT AIR WHICH CONTRIBUTES TO ADDITIONAL RESIDENTIAL INFILTRATION. (Z + a) - THE RATIO OF FURNACE OR BOILER STEADY STATE OUTPUT TO

THE RESIDENTIAL HEAT LOSS AT THE OUTDOOR DESIGN TEMPERATURE.

DC STACK DAMPER EFFECTIVENESS FACTOR, THE RATIO OF OFF-PERIOD

STACK MASS FLOW RATE THROUGH A CLOSED STACK DAMPER TO OFF-PERIOD STACK MASS FLOW RATE. - ASSIGNED FACTORS: S/F THE RATIO OF -STACK MASS FLOW RATE TO FLUE MASS FLOW RATE UNDER STEADY STATE OPERATION. OF THE RATIO OF FLUE MASS FLOW RATE DURING THE OFF·PERIOD TO FLUE MASS FLOW RATE DURING THE ON-PERIOD AT IDENTICAL TEMPERATURES. Os THE RATIO OF STACK MASS FLOW RATE DURING THE OfF-PERIOD TO STACK MASS FLOW RATE DURING THE ON-PERIOD AT IDENTICAL TEMPERATURES.

-**~ ~**  THE FRACTION OF COMBUSTION, RELIEF AND DRAFT AIR WHICH CONTRIBUTES TO ADDITIONAL RESIDENTIAL INFILTRATION. (1 + a) - THE RATIO OF FURNACE OR BOILER STEADY STATE OUTPUT TO THE RESIDENTIAL HEAT LOSS AT THE OUTDOOR DESIGN TEMPERATURE. DO STACK DAMPER EFFECTIVENESS FACTOR, THE RATIO or OFF-PERIOD STACK MASS FLOW RATE THROUGH ACLOSED STACK DAMPER TO OFF-PERIOD STACK MASS flOW RATE. ' '.

### s'

NATURAL DRAFT GAS FURNACE USING INDOOR AIR FOR COMBUSTION AND DRAFT CONTROL MEASURE TS,SS, XCDZ,S

xC ,F NATURAL DRAFT GAS FURNACE USING INDOOR AIR FOR COMBUSTION AND DRAFT CONTROL MEASURE T X

S,SS, C02,$ 

# l-... 'tt.J( -

I I 10- 

# , t**~** 

# IL**~'S"re**TF:off(t3)

FURNACES tj = 0.5 min t2 = 2.5 min t3 = 1.5 min t4 9.0 min t5; r, TF,off(t4) TF,off(t

BOILERS tl = 1.0 min t2 = 5.5 min t3 = 3.75 min t4=22.5^min t5= 45 min, FURNACES BOILERS 

# t, = 0.5 min tl 

### = 1.0 mi n t2 

### =2.5 min t2 

### = 5.5 min t3 ;; 1.5 m;n t3 

### = 3.75 min t4 

# .. 9.0 min t4 

### = 22.S-min 

### ts 'i: " " 

### ts '" 45 min**~**TEST DATA

Ton = P [ TF,SS TF,on f F - T t2 T ,SS Fon

+ L1/TOn 0F.0 [TF.SS - TF.on(t1)1 e

t - t 2 l

similar equations for Toff and *F,D TEST DATA

. .-t/TOff lliF,Q e TF{S**~----------------------------~~---r----~~~--------**
"Con

s;milar equations for Loff and**~F90**CYCLING CONDIT)ONS

Ct,on ^F , 0

1- TF,SS TF,off is 0F,O 'PF,0 [Tv,ss TF,off (ts
Similar equation for Ct,off toff Toff ton 4 tof f Ton Toff CYCLING CONDITIONS 

# f**~**

c =

t,on e 

### 1

## ~**~eF_ ._o_~_r_,0_____**  

# _(ton -+ tOff) 1T T**~2** e Ton toff Lf,SS - F.off (tSj

Similar equation for C t,offtom



## _ 

## r, 3, SS 

## _(.24 )(00) )t ( OF (

## t) dt S, ON 

## = QIN ON F,ON 0 Ls, ss 

### Ks,QN(0O)(1-e

tON TON

_ 0.24 ^ (S'/F) E 1 +RT,F(A/F) 1 (70 - 42) 

### LI ` ON ^ HHVA

= KI,ON(70-42) 0 FOR UNITS USING OUTDOOR COMBUSTION AIR



### L K S, ON (6 ) ( 

### 1 - 

### e -tON!'tON) 

## = S,SS - 

### t P,O ON 'rON



### 0.24 

### 4> (SIF) 

### [1 +RTF(A/F)] 

### (70 - 42) 

### LI , ON 

### = I. 

### HHV A



# = 0 FOR UNITS USING OUTDOOR COMBUSTION AIROFF PERIOD SENSIBLE MEAT LOSS 100 x Cp S,off Qin x ton mF,off (TF,off(t) - 70) dt if no stack damper
100 x Cp LS,off Qin "ton

Qin x ton ,off(t ) - 70) dt if unit employs a stack damper

OFF PERIOD INFILTRATION LOSS

L 100 0 Cp ,off otoff toff (T


# I` off mS,off (70 - TOA) dt For units using outdoor combustion air OFF PERIOD SENSIBLE HEAT LOSS

if no stack damper
LS,off 

### =**~S,off** (TS.off(t) - 70) dt if unit employs a stack damper

OFF PERIOD INFILTRATION LOSS



## = 100**~** 

### c· .{tOff . ---",-P- . mS ,off (70 - T OA) dt Q

in x ton. 

## =0 For units using outdoor combustion airFOR UNITS USING INDOOR COMBUSTION AIR:

TF, OFF TRA 0. 56 TF, SS TRA + 530 1.19 mF, OFF DF MF, ON ( _ T F, SS TRA TF, OFF TRA + 530

ms, OFF _ DS 'S, ON TS, OFF 

### TPA + 28 0.56 Ts, SS - 

### TRA + 28 Ts,ss - TRA + 530 

### Ts, OFF - TRA + 5 3 0 1.19 FOR UNITS USING INDOOR COMBUSTION AIR:
TF,OFF - TRA) 0.56 ( TF,SS - TRA 

### + 530 ) 1.19 mF,OFF 

## = DF mF,ON (--'------ TF,SS - 

### TRA TF,OFF - TRA 

### + 530


### T . - T 

### + 

### 28 0.56 

### T - T + 

### 530 1.19 

### - D (S, OFF RA ) (S, SS RA ) 

### m S, OFF 

## = S 

### roS, ON 

### TS, 

### ss - T RA + 

### 2 B 

### T S,OFF - 

### T RA 

### + 5 3

# aPART LOAD EFFICIENCY
ton Qin t 1 

### 00 - LL - 

## [ LS, on + L1, on + LS, off + L

t 1, off onQ.in + Op toff PART LOAD EFFICIENCY


### 100 - L - L

### ANNUAL FUEL UTILIZATION EFFICIENCY
AFUE = 100( ^lss)( Qin}( 1 (24) (DD) 100 1.7 65 -Td ( 91ss) ( Q3n) ( 1 ) (24) (DD) + 4600 Qp 100 1.7 65 Td T,, 

### 100 (t1,) ('lu) (5200) (^lss) 

### (5200) + (2. 5) (^u ) ( Qp 

### ) (1'.7) (4600) Qin 

### ANNUAL FUEL UTILIZATION EFFICrENCY 

### 100 ( l1ss ) ( 

### Qin ) ( 

### 1 ) (24) (DD) AFUE 

## = ____ 1_0_0 __ 1_. _7 __**6_5_-_Td~** ____ ____ 

### ( 11ss ) ( 

### Qin ) ( 

### 1 ) ( 24) (DD) 

### 100 1.7 65 -T +4600Qp d 

### 'flu 100 

### (11ss) ("

### u) (5200) 

# =**--------------~-------------------** 

### (11S8) 

### (520 0 ) + (2.5) 

### (llu) ( 

### Q p ) 

### (1.7) (4600) Qin

## ENERGY FACTOR

For gas and oil fueled furnaces and boilers, an energy,factor that combined both the annual fossil fuel consumption and auxiliary electricity consumption is defined in the current DOE furnace 1 boiler test procedure as: E.F = Tlu( EF - 4600 Qp)

EF + 3412 EAE 

## This parameter is not used as a rating descriptor in the current DOE test procedure. ENERGY FACTOR For gas and oil fueled furnaces and boilers, an energy factor that combined both the annual fossil fuel consumption and auxiliary electricity consumption is defined in the current DOE furnace 

## I boiler test procedure as:

This parameter is not used as 

## a rating descriptor in the current DOE test procedure.

## HISTORY OF THE FURNACE/ BOILER TEST PROCEDURE

1978 - DOE published in the Federal Register the final rule for the test procedure for furnaces / boilers. 1982 ASHRAE published the ANSI/ASHRAE Standard 103 for testing and rating of residential furnaces / boilers which followed closely the 1978 DOE test procedure. 1984 - DOE published in the Federal Register the final rule for the revised test procedure for furnaces/ boilers by referencing ANSI/ASHRAE 103-1982. Added test procedure for modulating furnaces /boilers. 1988 - ASHRAE published the revision to ANSI/ASHRAE 103 which included the test procedure for modulating furnaces / boilers from the 1984 DOE test procedure. 1993 - DOE published in the Federal Register the proposed revision to the current test procedure for furnaces / boilers. 1993 - ASHRAE published the revision to ANSI/ASHRAE 1 03 which included most of the proposed revision in the 1993 DOE proposed rulemaking. HISTORY OF THE FURNACE 

## I BOILER TEST PROCEDURE 1978 - DOE published in the Federal Register the final rule for the test**procedur~** 

### for furnaces 

## I boilers. 1982 - ASHRAE published the ANSI/ASHRAE Standard 103 for testing and rating of residential furnaces 

## I boilers which followed closely the 1978 DOE test procedure. 1984 - DOE published in the Federal Register the final rule for the revised test procedure forfurnaces 

## Iboilers by 

### referencing ANSIIASHRAE 103-1982. Added test procedure for modulating furnaces Iboilers. 1988 - ASHRAE published the revision to ANSIIASHRAE 103 which included the test procedure for modulating furnaces 

## I boilers from the 1984 DOE test procedure. 1993 - DOE published in the Federal Register**t~e·** 

### proposed revision to the current test procedure for furnaces 

## I boilers. 1993 04 

### ASHRAE published the revision to ANSI/ASHRAE 103 which included**~** 

### most of the proposed revision in the 1993 DOE proposed ruJemaking. r "U

..... en