Small electric steam superheater ACME

ACME Electric Steam Superheaters are available for use with steam boilers as auxiliary pieces of equipment.The heaters are all custom-made and built to meet the specific design requirements of each application. A superheater increases the temperature of the steam but does not increase the latent heat of evaporation.

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This means that heating with supuerheated steam is similar to heating with hot air. The material or medium being heated will approach the temperature of the superheated steam as long as the steam is not allowed to condense. It should be pointed out that if the steam is allowed to condense, the bulk of the heat will be transmitted at the saturated steam temperature for that pressure rather than at the superheated steam temperature. In addition to applications requiring supereheated steam for non-condensing processes, superheaters are also used only to obtain “dry” steam -i.e. 100% vapor – at the point of use.

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This requires the re-evaporation of all the water droplets which are carried by the steam. All of the droplets must be evaporated before the steam can be superheated; therefore, a few degrees of superheat above the saturation temperature assures dry steam.

Power and Control Panel:

NEMA 12 Enclosure shall include the following:

• Magnetic Breaker or Disconnect Switch, door interlocked;
• Buss Bars or Splitter Block;
• Fuses;
• Control Transformer fused primary;
• On-Off breaker for 120V control circuit;
• Dual Digital Display Electronic Controller, 1/4” DIN size for ease of operation;
• SCR Power Controller to modulate total heating capacity from 0 to 100%, according to steam flow variations;
• Semiconductor fuses to protect the SCRs;
• Thermocouple in outlet to detect leaving steam temperature. A minimum flow is required;
• Two levels of high steam temperature protection, one with automatic reset and the second one with manual reset in separate protection circuits for maximum security;
• Audible and visual alarm circuit with associated display lights, silencing button and horn.
• SPDT dry contacts for remote alarm supervision;
• OPTIONAL: Two SCR Power Controllers, each modulating half the total capacity, with slightly different time bases in order to reduce pulsations in the electrical distribution.