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Modern Energy LLC

Intelligent answers to your energy questions.

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Ronald F. Amberger PE
John DeFrees PE
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PROJECT:    Field Monitoring of Liquid Pressure Amplification (LPA) Technology
SPONSOR:    Northern States Power

Monitored several systems with LPA refrigerant pumps installed.  Monitored applications included chillers, supermarket refrigeration systems, and packaged DX equipment.   Evaluated the potential of this technology to save energy at part load conditions.

PROJECT:    Modular Ammonia Absorption Chiller for Low Temperatures
SPONSOR:    New York State Energy Research and Development Authority

Considered the potential of developing a small, modular ammonia absorption chiller for use in low temperature applications.  The first phase of the project was to study the technical potential for ammonia chiller and layout the design for a prototype unit.

PROJECT:    Evaluating the Feasibility of Gas Cooling at Matts Brewery
SPONSOR:    New York State Energy Office and F.X. Matt Brewery

Assessed the feasibility of implementing a gas-cooling scheme at a brewery.  The study evaluated several other options including engine-driven systems to produce electricity and drive refrigeration compressors. Also evaluated the option of heat recovery boilers on the engine, assessed new boiler plant options and recommended improvements to the steam distribution system.

PROJECT:    Valeo Wind Tunnel Refrigeration Plant Study
SPONSOR:    New York State Energy Research and Development Authority

Performed detailed engineering study of a proposed industrial refrigeration plant serving a wind tunnel facility.  Identified alternative cooling technologies that were evaluated using computer-modeling techniques.  Evaluated multiple design options that resulted in a major modification of refrigeration plant to incorporate a free (ambient air) cooling design feature.  Subsequently designed and maintained monitoring system to assess system performance over first year of operation at site.
PROJECT:    Feasibility of Using Absorption Cooling in a Mechanical Refrigeration Cycle
SPONSOR:    New York State Energy Research and Development Authority

Investigated various means of incorporating a lithium-bromide absorption chiller into an existing mechanical refrigeration plant at a beverage producer as an energy conservation feature that would thermally balance an existing steam turbine generator plant.  Analysis based on subcooling and cascade refrigeration plant options.  Produced conceptual design documents suitable for subsequent performance modeling and economic assessment activities.

PROJECT:    Feasibility of Gas Cooling
SPONSOR:    New York State Energy Research and Development Authority and Brooklyn Union Gas

Evaluated different refrigeration plant configurations for a major food processor using a gas engine driven compressor as refrigeration source.  Developed and implemented custom computer simulations for analysis purposes.  Design included absorption machines that produced chilled water used to subcool the primary refrigerant as thermal sink for engine heat.  Provided conceptual designs for bid package and subsequent monitoring and analysis services to determine actual performance benefit associated with subcooling system.

PROJECT:    Gas-Fired Refrigeration Studies
SPONSOR:    Vermont Gas

Provided economic evaluations of chiller plant modifications for an ice cream and a computer manufacturer interested in gas cooling options as remedy for pending actions in compliance with CFC phase outs.  Investigated applications of both absorption and mechanical refrigeration options.

PROJECT:    Evaluation of Refrigeration Cycle Enhancements
SPONSOR:    Wisconsin Electric Power Corporation

Performed both technology assessment and field monitoring evaluation of a liquid refrigerant pump designed to enhance refrigeration plant performance.  Utilized computer simulations and field data to determine theoretical and actual in-service benefit associated with installations in commercial and food market applications.

PROJECT:    Demonstration of a Refrigeration Optimization System
SPONSOR:    Upstate Farms Cooperative

This project was undertaken to demonstrate the capabilities of an expert software system called MENTOR developed by the March Engineering Group (UK).  The software was intended to review the operating status of the host site’s refrigeration plant and make recommendations to the operators to optimize energy use.  A 72 point monitoring system was installed to evaluate the refrigeration plant and determine what impact the availability of the MENTOR software had on energy consumption.

PROJECT:    Refrigeration Control Upgrade
SPONSOR:    New York State Energy Research and Development Authority, Granny’s Kitchen

Evaluated upgrades and improvements to energy management system for a food products manufacturer with particular emphasis on the refrigeration plant.  Specified monitoring and control points, identified and solicited bids from potential vendors, and recommended implementation strategies to plant owners.

PROJECT:    Refrigeration Plant Expansion
SPONSOR:    New York State Energy Research and Development Authority, Singer Frozen Storage

Evaluated requirements for adding ice building capabilities to an existing cold storage facility as an alternative, seasonal product to improve facility utilization.  Application of a small engine-compressor drive included as a potential energy conservation measure and backup to existing electrically driven compressors.  Provided recommendations on a controls upgrade that would allow the compressor plant to be remotely monitored.

PROJECT:    Refrigeration Plant Energy Conservation
SPONSOR:    New York State Energy Research and Development Authority, Genesee Valley Cold Storage

The objective of this study was to identify energy conservation measures applicable to the existing refrigeration plant.  ECMs based on operating practices, application of a plant wide energy management system, compressor staging and repairs to the physical structures were presented.

PROJECT:    Moisture control in cold storage warehouse
SPONSOR:    New York State Energy Research and Development Authority, Mc Adams Cheese

The objective of this study was to foster better control of moisture infiltration into a cold storage warehouse.  The work involved a careful analysis of the building insulation systems and moisture barriers, door systems, refrigeration system and material movement. Several recommendations resulted in energy savings and much improved control of moisture in the facility.