Gas Engine Driven Cooling

Selected Projects:

Field Monitoring Gas-Engine Industrial Refrigeration Systems -

Exergy Partners The Industrial Center Southern California Gas Monitored the performance two industrial gas-engine refrigeration systems: a Brewery in Irwindale, CA and a onion processing facility in Oxnard, CA.  Both systems added gas-engine driven compressors to supplement electric compressors on large ammonia refrigeration systems.  Installed monitoring equipment to measure gas and electric system performance.  Analyzed the collected data to determine annual operating costs under various on-peak and off-peak operating scenarios.

Field Monitoring Gas-Engine Industrial Refrigeration Systems -

Exergy Partners The Industrial Center Southern California Gas Monitored the performance of a gas-engine refrigeration compressor coupled to four desiccant units at a multiple rink complex in Blaine, MN.  Installed monitoring equipment to understand gas engine and heat recovery performance.  Analyzed the collected data to determine annual operating costs under various on-peak and off-peak operating scenarios.  Quantified the benefits of heat recovery and impact desiccant unit operating on rink conditions.

Evaluation of Gas-Engine Refrigeration Racks in a Supermarket -

Keyspan Energy Field monitored the performance of two integrated gas-engine-driven refrigeration racks at a supermarket in Brooklyn.  Monitored both gas and electric system operation to understand system operation and to determine the economics of operating the gas-driven system during on-peak periods.

Evaluation of Integrated Electric/Gas-Engine Rack Using Secondary Coolants -

Keyspan Energy Field monitored the performance of an integrated electric/gas-engine-driven refrigeration rack that provides cooling to medium temperature cases with a secondary coolant at a supermarket in Plainview, NY.  Monitoring both gas and electric system operation through the store control system and with dedicated data loggers.  Analyzing system performance to understand system operation and to determine the economics of operating the gas-driven system during on-peak periods.

Gas Cooling Commercial Building Screening Tool -

Keyspan Energy Developed an HVAC screening tool for comparison of various gas cooling options in commercial building.  Systems include gas engine driven DX and chillers, absorption, and heat pumps.  The tool provided a simplified user interface to operate and report from a detailed hourly building and system simulation in TRNSYS.

 Enhanced Residential Heat Pumps -

Energy Center of Wisconsin Evaluated the status of enhanced heat pumps in the state of Wisconsin.  Assessed the potential of ground-source and engine-driven heat pump technologies in the state, summarizing current and expected market trends, and field monitoring eight demonstration sites.  The assessment focused on identifying promising heat pump technologies and installation techniques, demonstrating their economic and environmental benefits through field monitoring, and determining the best paths towards transforming markets to accept enhanced heat pump technologies.

Field Performance Monitoring of a 25 ton Gas-Engine Condensing Unit -

Brooklyn Union Field monitored a packaged, engine-driven rooftop air conditioner.  The system was monitored using the unit’s microprocessor-based controller along with an independent data acquisition system.  Sufficient data were collected to quantify air-side cooling capacity and unit efficiency.   Measured system performance was compared to competing electric technologies.

Field Performance Monitoring of an R22 and R134a Gas-Engine Cooling Unit-

Brooklyn Union Field monitoring two packaged DX, engine-driven compressor systems using refrigerants R-22 and R-134a.   The two systems were compared to assess the impact of using refrigerant R-134a instead of R-22.  The air-side performance of the systems was compared to each other as well as to other competing electric technologies.