Universal Process / Temperature Controllers
Anti-Sweat Controller prevents condensate on cold surfaces.
Press Release Summary:
Suited for new and retrofit applications, microprocessor-based Model ACC prevents formation of condensate on glass doors of refrigerated display cases, and can be connected to supervisor system with RS485 board. Using ambient temperature and humidity sensor as well as sensor that measures temperature on door of display case, Model ACC calculates dewpoint and operates anti-sweat heaters only when strictly necessary.
Original Press Release:
No To Condensate On Refrigerated Display Cases, Yes to Energy Savings: The New ACC Controller
ACC is the new and innovative microprocessor-based anti-sweat controller designed to prevent the formation of condensate on cold surfaces, such as the glass doors of refrigerated display cases. ACC is ideal for both new installations and retrofit applications, and can be connected to a supervisor system using the RS485 board.
In a supermarket, the power supply to the hot wire and the anti-sweat heaters account for a significant percentage (up to 10%) of the total energy consumption. The condensate that forms on the glass whenever the doors of refrigerated cases are opened and closed causes greater electricity consumption due to the continuous operation of the anti-sweat heaters. In addition, the condensate blocks the view of the prodcuts to the consumer, who may perceive this as poor food storage. ACC, using an ambient temperature and humidity sensor and a sensor that measures the temperature on the door of the display case, calculates the dewpoint and operates the anti-sweat heaters only when strictly necessary. The temperature and humidity are monitored continuously: when the ambient conditions change, ACC automatically calculates the new heater control set point and heats the glass so as to ensure the temperature is above the dewpoint, thus preventing the formation of condensate. ACC consequently brings significant energy savings and reductions in running costs by optimizing the energy consumption of the heaters. It also resolves the ugly problem of condensate on the glass.
ACC was tested for more than eight weeks in an important British supermarket chain during the hotter months of June and July last year: the energy savings achieved was on average 50%, meaning a return on investment in just six months.