List of Technologies Promoted By PCS

  1. Active Harmonic Filters
  2. Power Generation / Cogeneration
  3. Lighting Controllers for Metal Arc Lighting
  4. Power Factor Correction
  5. Fluorescent Lighting Controller
  6. Direct Contact Heat Exchanger
  7. Ground Source Heat Pumps
  8. Recip Small Cogen Unit

    1. Active Harmonic Filters
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    These are electronic devices which can be suitably installed at selected points in a building or industrial plant electrical distribution system which will approximately cancel harmonics. Harmonics are normally caused by loads such as printers, computers, variable speed drives, MRI units, and other nonlinear operational devices. In some cases the harmonics can lead to large circulating currents, reduced transformer and electric cable capacity for normal loads, and the cause of nuisance breaker trippings. In extreme cases, harmonics can burn up the neutral of power distribution systems, leading to unscheduled outages of power. Energy cost savings can vary substantially, depending on the level of harmonics, which must be measured; KWH savings can vary from 1-2% up to 10-15% in extreme situations.

    2. Power Generation / Cogeneration
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    PCS team members are involved with developing and installing power generation systems for industrial facilities, commercial complexes, and associated locations. In addition, backup power for small and medium size facilities are developed on a turnkey basis. Through our contacts, we are able to provide fast installation, and this is especially important with the long lead times currently being experienced in the gas turbine market; this is performed through selected reconfiguration of existing turbines which obtain factory warranties. In such cases projects can take fractions of the time normally experienced, thus improving the overall project economics. Systems include both recips and turbines.

    3. Lighting Controllers for Metal Arc Lighting
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    Most facilities, when retrofitted with metal halide or HPS lighting, are assumed to have some of the highest "efficacy" lighting available, and it is often assumed nothing else can be done. However, in many instances one ends up with excess lighting, and in those instances, special electronic controllers can be installed on lighting branch circuits to control the slight dimming in steady state of these metal arc systems, and the resulting slight voltage drop is more than compensated by a substantial KW reduction, out of proportion to the percentage light reduction.

    For example, reducing the lumens output of metal halide fixtures by 10% could lead to a power decrease in excess of 18%. Although these devices require engineering to install, one does not have to change out any fixtures, and such new equipment could even apply to a new construction project after completion if it is determined that further refinement in energy consumption is warranted.

    4. Power Factor Correction
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    There are dozens of systems on the market, but when harmonics have been present, if not properly configured, one can create a tuned circuit which "amplifies" the bad effects of harmonics, increasing the problem. PCS has off the shelf solutions which can solve the simple or the complex power factor problem, and aid in reducing electric power penalty charges, without creating additional problems due to harmonics.

    5. Fluorescent Lighting Controller
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    Available to existing lighting systems, these can be used to further refine and reduce the wattage consumption of lighting circuits. Even if a building was just relamped to T-8 or T-5 technology, our controller can aid in reducing utility costs at the price of a nominal reduction in lumen output. Based on the principal of voltage control of ballasts, these units can reduce the lighting portion of an electrical bill 5-20%, depending on the pre retrofit conditions.

    6. Direct Contact Heat Exchanger
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    In many central plant and industrial applications, heat recovery is considered by the ESCO or consulting engineer, but rarely if ever is the low quality heat recovery which is possible from low quality heat considered. For example, suppose one has a boiler which has an economizer on it and the output temperature to the stack is about 300 F-normally this would be assumed to be about right and all the useful heat had already been recovered; but the condensing heat exchanger takes that "waste" heat and says let us extract much more energy out of it, and provide low level heat such as hot water at 95F or 125F. In applications requiring much hot water, this approach can be beneficial. Applications include industrial plants, laundries, and hospitals. The amount of energy cost reduction is entirely dependent on the particular application, and the amount of heat which can be recovered and utilized to offset existing fossil fuel, but the fuel savings attributable to such devices could vary from ~ 15%.

    7. Ground Source Heat Pumps
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    Under the correct conditions, ground source heat pump technology can be utilized in heating/cooling applications, and domestic hot water generation so as to reduce current operating costs and provide for a technology with a long life which is considered a "renewable resource" by the US government. This has been a good way for capital renewal when electric heat is used currently, but even without that, it can be a cost-effective heating and cooling approach. Operating cost savings can vary, depending on the original cooling and heating system and its efficiency; ranges vary from 10%-S0% of the heating/cooling portion of the bill.

    8. Recip Small Cogen Unit
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    PCS can provide standard, off the shelf systems with capacities of 125 KW and 250 KW at ISO conditions. Each unit provides electricity and heat recovery. The form of heat recovery can be hot water or low pressure steam via ebullient cooling. Overall cost benefits depend on the existing utility rates, ability to use the recovered heat all the time, and the costs of thermal fuel for operating the new cogen system; therefore, a clear indication of the savings magnitude is not straightforward to calculate here, but system pricing is configured to provide for adequate investment return under typical circumstances.

Copyright 1999 Power Correction Systems,Inc. All rights reserved.