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ASTM F1785-97(2020)

ASTM F1785-97(2020)

Standard Test Method for Performance of Steam Kettles

2020-08-18 /Active
Significance and Use:

5.1 The maximum energy input rate test is used to confirm that the steam kettle is operating within 5 % of the manufacturer's rated input so that testing may continue. This test method also may disclose any problems with the electric power supply, gas service pressure, or steam supply flow or pressure. The maximum input rate can be useful to food service operators for managing power demand.

5.2 The capacity test determines the maximum volume of food product the kettle can hold and the amount of food product that will be used in subsequent tests. Food service operators can use the results of this test method to select a steam kettle, which is appropriately sized for their operation.

5.3 Production capacity is used by food service operators to choose a steam kettle that matches their food output. The production capacity determined in this test method is a close indicator of how quickly the kettle can bring soups, sauces, and other liquids up to serving temperature.

5.4 Heatup energy efficiency and simmer energy rate allow the operator to consider energy performance when selecting a steam kettle. Simmer energy rate is also an indicator of steam kettle energy performance when preparing foods which require long cook times, for example, potatoes, beans, rice, or stew.

5.5 Pilot energy rate can be used to estimate energy consumption for gas-fired steam kettles with standing pilots during non-cooking periods.


1.1 This test method evaluates the energy consumption and cooking performance of steam kettles. The food service operator can use this evaluation to select a steam kettle and understand its energy consumption and performance characteristics.

1.2 This test method is applicable to direct steam and self-contained gas or electric steam kettles. The steam kettle can be evaluated with respect to the following, where applicable:

1.2.1 Maximum energy input rate (10.2).

1.2.2 Capacity (10.3).

1.2.3 Heatup energy efficiency and energy rate (10.4).

1.2.4 Production capacity (10.4).

1.2.5 Simmer energy rate (10.5).

1.2.6 Pilot energy rate, if applicable (10.6).

1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

energy efficiency; performance; production capacity; steam kettle; test method; throughput ;
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