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August 24, 2021

Electric Thermal Storage Heating System Cools Utility Costs

Just in time for winter, Electric Thermal Storage (ETS) for commercial and industrial users frees thousands of dollars in heating costs for better use elsewhere

(PRWEB) August 24, 2021 -- Most commercial and industrial customers are billed for electric power in two components: energy use and their electric demand. Energy is billed by kWh usage and demand is billed by kW. The kW demand component of their bill can represent approximately 55% or more of their overall cost, and this is where Electric Thermal Storage (ETS) heating system can have a major impact.

The only ETS heating system designed for industrial and commercial heating applications in North America, the Steffes ThermElect (http://www.steffes.com) system is a central forced-air electric furnace. During demand-free off-peak hours, the ETS heating system automatically converts electricity into heat and stores that heat in specially designed high-density ceramic brick core. The core is capable of storing heat up to 1,650 F, which gives it a volumetric advantage of 12 to 1 over water boilers. The ETS heating system has enough storage capacity to provide industrial and commercial heating comfort 24 hours a day, while allowing the user to utilize low cost demand-free off-peak electric rates, freeing thousands of dollars of utility costs for better use elsewhere.

Based on Steffes’ expertise, a conservative estimate of demand cost savings of shifting 80kW of peak load during 8 AM to 10 PM weekdays for one winter might look like this:

Month Shifted Load
October 30kW
November 55kW
December 80kW
January 80kW
February 55kW
March 30kW
April 15kW
Total 345kW

Applying the current rates and TOD incentives of Xcel (Public Service of Colorado) to this example would yield a demand shift savings of $4,330 for the seven-month period. In some cases, accounts are billed each month based on their annual peak, as in Quebec. If a facility has a peak of 100 kW for example, and they get billed $10/kW, they would get billed $1,000 each month until next year’s measurement. In that case, 80KW are shifted and savings is 80kW’s worth of billing for each month. There are an innumerable rate structures, some could be better than the Colorado example.

The ThermElect (http://www.steffes.com) electric furnace has a programmable, microprocessor-based control system that provides customers with flexible, customized control over heating settings, as well as self-diagnostics. The latter is important to keeping the heating system virtually maintenance free. Each unit also includes built-in sensing devices and a receiver for wireless communications of information such as utility peak control signals, outdoor temperature, room temperature setbacks and automatic brick core charge control.

Posted by Industrial-Manufacturing at August 24, 2021 12:45 AM