tion, Ecr, in standard cubic feet of gas or watt-hours of electricity, respectively, and the test block temperature, Ter, at the end of the 15 minute (reduced input setting) test interval for the test specified in 3.1.2 and the total time, Tr, in hours, that the unit is under test. Measure any electrical energy, Eic, consumed by an ignition device of a gas heating element in watt-hours.

3.2.2.1 Gas consumption of continuously burning pilot lights. If the conventional gas cooking top under test has one or more continuously burning pilot lights, measure the gas consumed during the test by the pilot lights, P., in standard cubic feet of gas, and the test duration, L., in hours as specified in 3.1.2.1. If a gas flow meter is used, measure the flow rate, P, in standard cubic feet per hour.

3.2.3 Microwave oven test energy consumption. Measure the initial, T1, and final, TF, temperatures, in degrees Fahrenheit (°F), of the water test load for the 2,000 ml, 1,000 ml, 500 ml and 275 ml tests. The final temperature, TF, shall be measured after the test load has been stirred to insure uniform temperature distribution. Measure the elapsed time, t, in seconds, until the temperature rise of the water load is 45±9° F.

Measure for each test specified in 3.1.3 the electical input energy, EM, in watt-hours consumed by the microwave oven during the elapsed time, t.

3.3 Recorded values.

3.3.1 Record the test room temperature, TR, at the start and end of each test.

3.3.2 Record measured test block weights W1, W2, and W, in pounds.

3.3.3 Record the initial temperature, T1, of the test block under test.

3.3.4 For a conventional oven with a thermostat which operates by cycling on and off, record the conventional oven test measurements TA, EA, TB, EB, TC, EC, TD, and ED. If the thermostat controls the oven temperature without cycling on and off, record Eo. For a gas oven which also uses electrical

energy for the ignition or operation of the oven, also record E10.

3.3.5 Record the measured energy consumption, Es, and for a gas oven, any electrical energy, Eis, for the test of the self-cleaning operation of a conventional oven.

3.3.6 Record the gas flow rate, PR; or the gas consumption, P., and the elapsed time, Lo, that any continuously burning pilot lights of a conventional oven are under test. 3.3.7 Record the clock power measurement or rating, PC, in watts.

3.3.8 For the surface unit under test, record the energy consumption, ECT, the final test block temperature, Ter, the total test time, Tr. For a gas cooking top which uses electrical energy for ignition of the burners, also record Eic.

3.3.9 Record the gas flow rate, P; or the gas consumption, P., and the elapsed time, Le, that any continuously burning pilot lights of a conventional cooking top are under test.

3.3.10 Record the heating value, H,, as determined in 2.2.2.2 for the natural gas supply.

3.3.11 Record the heating value, H,, as determined in 2.2.2.3 for the propane supply.

3.3.12 Record the electrical input energy, EM, the elapsed time, t, and initial, T1, and final, TF, temperature of the water load for each microwave oven test.

4. CALCULATION OF DERIVED RESULTS FROM TEST MEASUREMENTS

4.1 Conventional oven.

4.1.1 Test energy consumption. For a conventional oven with a thermostat which operates by cycling on and off calculate the test energy consumption, Eo, corresponding to To with the aid of the figure in 5 of this Appendix, expressed in watt-hours for electric ovens and in Btu's for gas ovens, and defined as:

TA=block temperature at the end of the last "ON" period of the conventional oven before the test block reaches To. E=volume of gas consumed in standard cubic feet at the end of the last "ON" period before the test block reaches To. TB=block temperature at the beginning of the "ON" period following the measurement of TA.

EB-volume of gas consumed in standard

cubic feet of gas at the beginning of the "ON" period following the measurement TA.

Tc-block temperature at the end of the "ON" period which starts with TB. Ec=volume of gas consumed in standard cubic feet of gas at the end of the "ON" period which starts with TB. TD-block temperature at the beginning of the "ON" period which follows the measurement of Tc.

ED=volume of gas consumed in standard cubic feet of gas at the beginning of the "ON" period which follows the measurement of Tc.

4.1.1.1 Average test energy consumption. If the conventional oven can be operated with or without forced convection, determine the average test energy consumption, Eo and Elo, using the following equations:

2

where:

(E), (E)2=Test energy consumption in each baking mode as measured in 3.2.1 or as calculated in 4.1.1.

= pilot flow rate in standard cubic feet per hour where Po and Lo are defined below. Po=Standard cubic feet of gas consumed by any continuously burning pilot lights as determined in 3.2.1.2.

H=H, or H, the heating value of the gas used in the test as specified in 2.2.2.2 and 2.2.2.3 in Btu's per standard cubic foot.

Lo elapsed test time in hours for any continuously burning pilot lights tested. A=8,760, number of hours in a year. B=300, number of hours any continuously burning pilot lights contribute to the heating of an oven for cooking food. 4.1.2.3 Annual conventional oven selfcleaning energy.

4.1.2.3.1 Annual primary energy consumption. Calculate the annual primary energy consumption for conventional oven self-cleaning operations, Esc. expressed in kilowatt-hours for electric ovens and in Btu's for gas ovens, and defined as:

Esc Es X Sex C, for electric ovens, where:

where:

EAOE=ESO+ Ess+ ECL,

Eso annual secondary cooking energy consumption as determined in 4.1.2.1.2. Ess-annual secondary self-cleaning energy consumption as determined in 4.1.2.3.2.

ECL annual clock energy consumption as determined in 4.1.2.4.

The total annual energy consumption of a conventional gas oven, Exo, is comprised of EAOG, expressed in Btu's and EAOE, expressed in kilowatt-hours, as computed above.

4.1.2.6. Total annual energy consumption of multiple conventional ovens. If the cooking appliance includes more than one conventional oven calculate the total annual energy consumption of the conventional ovens using the following equations: 4.1.2.6.1 Conventional electric energy consumption. Calculate the total annual energy consumption, Ero, in kilowatt-hours and defined as:

ovens

W1 = measured weight of test block in pounds.

Cp=0.23 Btu/lb-° F, specific heat of test block.

T=234° F, temperature rise of test block. Eo test energy consumption as measured in 3.2.1 or calculated in 4.1.1 or 4.1.1.1. HE 3.412 Btu's/Wh, conversion factor for watt-hours to Btu's.

E10 electrical test energy consumption according to 3.2.1 or as calculated in 4.1.1.1.

4.1.3.2 Multiple conventional ovens. If the cooking appliance includes more than one conventional oven, calculate the cooking efficiency for all of the conventional ovens in the appliance, Effro, using the following equation:

where:

=

E

AOG

+ (E A

O. 160,700 Btu's per year cooking energy output. EOG total annual gas er tion as determined in 4.1 EOE total annual electri sumption as determined H. 3,412 Btu's/kWh, co

for kilowatt-hours to Btu 4.1.4.2 Multiple conventi the cooking appliance inclu one conventional oven, calcɩ factor for all of the ovens, R lowing equations:

For electric ovens,