Technical Paper #1: CFD Simulation of NH3 Release and Detection in Refrigerated Spaces (Results of the IIAR/ARF Research Project)
Speaker: William Greulich, Kensington Consulting
Monday, March 16, 2020 1:45 PM - 2:35 PM Rosen Shingle Creek Panzacola F3-4
Wednesday, March 18, 2020 9:00 AM - 9:50 AM Rosen Shingle Creek Panzacola F3-4
This session will examine the results of a computational modelling study of ammonia release in three refrigerated spaces to evaluate potential detector performance. Come see why detector response time data is crucial in assessing the performance of single-detector placement and guiding the choice of detector positioning where ammonia from a leak is most likely to accumulate.
Technical Paper #2: Methods for Saving Energy in Cold Storage Warehouses
Speaker: Caleb Nelson, Azane Inc
Monday, March 16, 2020 2:40 PM - 3:30 PM Rosen Shingle Creek Gatlin A3-4
Tuesday, March 17, 2020 2:05 PM - 2:55 PM Rosen Shingle Creek Gatlin A3-4
Savvy warehouse owners and operators have become experts in optimizing their facilities’ energy performance by influencing the measure and timing of demand on refrigeration systems. However, understanding the complexity of design and operation of the refrigeration system itself offers further opportunity for energy savings. This session will offer a holistic approach to energy optimization through load reduction, refrigeration system design, and continuous monitoring of energy efficiency.
Technical Paper #3: Transcritical CO2 and Ammonia: Energy Efficiency and Basic Capital Cost Comparison for Industrial Refrigeration Systems
Speaker: Giacomo Pisano, Dorin, USA
Monday, March 16, 2020 1:45 PM - 2:35 PM Rosen Shingle Creek Panzacola F1-2
CO2 has been identified as an alternative to HFCs in many sectors, including commercial refrigeration. Nevertheless, ammonia remains the refrigerant of choice in larger industrial applications, in part due to the fact that currently available CO2 compressors are prohibitively expensive versus ammonia components. Recently, however, emerging technologies are making it possible to design and operate cost-effective CO2 systems. This session will describe a performance and cost comparison between CO2 and ammonia refrigerants in a refrigeration system with a capacity of 12.000 kBtu/h.
Technical Paper #4: Proper Installation and Maintenance Practices for VFDs
Speaker: Paul Jasczynski, Logic Technologies
Monday, March 16, 2020 1:45 PM - 2:35 PM Rosen Shingle Creek Panzacola H1-2
Tuesday, March 17, 2020 1:10 PM - 2:00 PM Rosen Shingle Creek Panzcacola H1-2
This presentation will examine various methods for proper installation of variable frequency drives on industrial motors, with a focus on selecting line and load reactors; proper installation of shielded cable; high-speed fuses for protecting the VFD; environmental considerations when installing a VFD (temperature, dust, dirt , water, sunlight, vibration, etc.); and the importance of VFD duty rated motors. In addition, the speaker will offer practical suggestions for VFD maintenance and discuss why it’s a good idea to engage key suppliers and ask for their guidance in addressing installation concerns and practices.
Technical Paper #5: Development of a Mechanical Insulation Installation Guideline for Refrigeration Applications (Results of the IIAR/ARF Research Project)
Speaker: Gordon Hart Artek, Engineering, LLC
Monday, March 16, 2020 1:45 PM - 2:35 PM Rosen Shingle Creek Gatlin A3-4
Tuesday, March 17, 2020 3:25 PM - 4:15 PM Rosen Shingle Creek Gatlin A3-4
A major challenge for refrigerated food processing and distribution facilities is preventing the water vapor intrusion into insulation material, a condition that can result in a freeze/thaw process that greatly compromises the insulation’s thermal performance and can lead to severe corrosion of the steel surfaces beneath the insulation. This session will present the results of an IIAR/ARF research project that set out to identify materials, processes, and practices that contribute to greater longevity of these insulation systems. The speaker will also unveil recommended insulation installation guidelines and quality assurance practices that, if followed, will result in improved insulation system performance and longevity.
Technical Paper #7: Review of Accidents in the Ammonia Refrigeration Industry
Speaker: Peter Jordan MBD, Risk Management Services, Inc.
Monday, March 16, 2020 4:55 PM - 5:45 PM Rosen Shingle Creek Panzacola F1-2
Tuesday, March 17, 2020 2:05 PM - 2:55 PM Rosen Shingle Creek Panzacola F1-2
In the age of the internet, a review of accidents occurring in the ammonia refrigeration industry since 2007 has allowed for an unprecedented amount of information to be collected. This data offers valuable insight into the causative factors and severity of an unplanned ammonia release. All attempts to reduce the frequency or consequences of these accidents, either by policies adopted by individual companies or though changes to the industry codes and standards, should be encouraged. This session will focus on areas where policies and changes can provide the most benefit.
Technical Paper #8: Taking Your PSM Program to the Next Level - Establishing an Evaluation System
Speaker: Linda McDaniel, Americold
Monday, March 16, 2020 4:55 PM - 5:45 PM Rosen Shingle Creek Panzacola F3-4
Tuesday, March 17, 2020 1:10 PM - 2:00 PM Rosen Shingle Creek Panzacola F3-4
Process Safety Management (PSM) is an “evergreen” program requiring consistent monitoring in order to ensure compliance. An evaluation system is a good tool for providing a gap analysis report that can be communicated throughout the organization; maintaining accountability for completing recommendations in a timely manner; ranking recommendation priorities; and keeping up with annual requirements. This session will review steps for establishing a grading system for scoring the required three (3) year compliance audit, PHA revalidation, and mechanical integrity inspections. We will also discuss a method for tracking annually required items, operating procedure certifications, training, and visual inspection, as well as predictive technologies such as vibration and oil analysis.
Technical Paper #9: Penthouse Evaporator Use with In-Rack Freezing Systems
Speaker: Dan Tippmann, Tippmann Engineering
Tuesday, March 17, 2020 2:05 PM - 2:55 PM Rosen Shingle Creek Panzacola H1-2
Wednesday, March 18, 2020 9:00:00 AM 9:50:00 AM Panzacola H1-2
In-rack freezing system applications often concentrate the refrigeration load into a fairly small footprint within a freezer. This concentration of refrigeration load can present the system designer with challenges in evaporator placement. The use of penthouse evaporators provides advantages that help overcome some challenges while providing all of the convenience penthouses are known for. This presentation will examine the challenges and solutions related to ideal evaporator selection and placement with in-rack freezing systems. Airflow challenges posed by the freezing system and frost prevention will also be discussed.
Technical Paper #10: Hot Gas vs. Electric Defrost for Standard Commercial Refrigeration Systems: An Energy Comparison
Speaker: Danny Halel, Nthalp
Monday, March 16, 2020 2:40 PM - 3:30 PM Rosen Shingle Creek Panzacola F1-2
Tuesday, March 17, 2020 1:10 PM - 2:00 PM Rosen Shingle Creek Panzacola F1-2
In commercial refrigeration systems, it is from time to time necessary to eliminate significant ice and frost build-up on the equipment. This paper brings to light some of the significant variables involved with defrosting commercial refrigeration systems and provides insight as to how much energy will be used in a typical electric system versus a typical gas defrost system.
Technical Paper #11: Reducing Capital and Energy Costs Through Refrigeration Energy Modeling
Speaker: Andy Campbell, Leo A Daly
Tuesday, March 17, 2020 3:25 PM - 4:15 PM Rosen Shingle Creek Panzacola F1-2
Wednesday, March 18, 2020 10:00 AM - 10:50 AM Rosen Shingle Creek Panzacola F1-2
This session will discuss the validity and value of energy modelling as a part of the refrigeration design process, plus highlight the benefits of the energy modelling process in advance of capital equipment selection. The presenter will demonstrate how energy modelling can aid in the selection of capital equipment to deliver energy efficiency for the majority of the system’s operational time, rather than efficiency for peak design conditions. These design principles are capable of delivering the required capacity during the maximum design day, and also reduce energy consumption and capital investment.
Technical Paper #12: Assessment of Lubricants for Hydrocarbon Refrigeration Systems
Speaker: Glenn Short, BVA
Monday, March 16, 2020 4:00 PM - 4:50 PM Rosen Shingle Creek Panzacola H1-2
Tuesday, March 17, 2020 3:25 PM - 4:15 PM Rosen Shingle Creek Panzacola H1-2
Hydrocarbon (HC) refrigerants have received increased recognition due to their negligible global warming potential (GWP) and their performance benefits versus other refrigerants. As a result, the use of refrigerants such as R-290, R-600a, and R-1270 are finding increased use. Mineral oils and synthetic compounds are widely used as lubricants with hydrocarbon refrigerants, but problems can occur without an understanding of the relationship between working fluid, lubricant, and refrigerant. This session will present data for various hydrocarbon refrigerant systems utilizing mineral oil and synthetic lubricants and investigate potential overall performance benefits.
Technical Paper #13: Permanent Refrigeration Plant Performance Optimisation Using Continuous Real Time Analysis
Speaker: John Clark and David Blackhurst, Star Technical Solutions, Ltd
Monday, March 16, 2020 2:40 PM - 3:30 PM Rosen Shingle Creek Panzacola H1-2
Tuesday, March 17, 2020 4:20 PM - 5:10 PM Rosen Shingle Creek Panzacola H1-2
Studies indicate that efficiency improvements of 10% to 30% can be anticipated in refrigeration systems that have not been optimised. This operational deficit is generally associated with a lack of information, knowledge, and incentive to improve the situation. This session will use case studies to examine how these barriers have been overcome with advances in computer modelling software, the diminishing cost of internet access and computing power, and the ease of developing accessible user outputs that allows the automated analysis results to be delivered to specified personnel, continuously and in a “language” appropriate for them.
Technical Paper #14: Low Head Pressure Operation of Commercial Systems
Speaker: Dustin Lilya, DC Engineering
Monday, March 16, 2020 4:00 PM - 4:50 PM Rosen Shingle Creek Gatlin A3-4
Tuesday, March 17, 2020 1:10 PM - 2:00 PM Rosen Shingle Creek Gatlin A3-4
Commercial refrigeration compressors account for approximately one-third the energy consumed in a grocery store. Commercial systems in the U.S. do not typically utilize liquid refrigerant pumps, and instead use system pressure to feed liquid to the cases. This is often a limiting factor for low head pressure operation. It is possible to retrofit existing refrigeration systems with liquid pumps and other components to allow for a significant reduction in minimum head pressure operation. This presentation will explore a typical rack system design and provide a breakdown of the components (beyond liquid pumps) that are limiting factors for low head pressure operation and how to overcome them.
Technical Paper #15: Study of Package Chiller Systems - Comparison of Natural (NH3 and CO2) and HFC Refrigerants
Speaker: John Collins, Zero Zone
Monday, March 16, 2020 4:55 PM - 5:45 PM Rosen Shingle Creek Gatlin A3-4
Tuesday, March 17, 2020 4:20 PM - 5:10 PM Rosen Shingle Creek Gatlin A3-4
The decision process for refrigeration system design requires evaluation of many criteria. Design decisions have become more complicated in recent years as regulatory concerns, new technology, and other factors have changed the options available. The choice of refrigerant is a primary criterion that has a fundamental impact on the entire system design. A comparison of systems using different refrigerants is one way to facilitate a good decision for a particular application. This session will evaluate system energy performance for chiller systems in an ice rink application using various refrigerants, including CO2, NH3, and HFC.
Technical Paper #16: Technical and Technological Barriers for Ammonia Refrigeration Thermal Districts in Colombia / Barreras técnicas y tecnológicas para los distritos térmicos de refrigeración con amoníaco en Colombia (presented in Spanish)
Speaker: Bolívar Monroy, ACAIRE
Monday, March 16, 2020 2:40 PM - 3:30 PM Rosen Shingle Creek Panzacola F3-4
Tuesday, March 17, 2020 3:25 PM - 4:15 PM Rosen Shingle Creek Panzacola F3-4
This session will describe the market conditions of the refrigeration and air conditioning sector in Colombia; market projections regarding the use of ammonia as a refrigerant in thermal district solutions for air conditioning; and the technical, legislative, and social barriers that resist optimization of a country-wide cold chain.
Technical Paper #17: Operating Cost Comparison between Transcritical CO2 and Ammonia Recirculation Systems in a Cold Storage Warehouse / Comparación de costos operativos entre CO2 transcrítico y sistemas de recirculación de amoníaco en un almacén de almacenamiento en frío (Spanish translation of English-language paper)
Speaker: Mario Mora Carli, FrigoConsult
Monday, March 16, 2020 4:00 PM - 4:50 PM Rosen Shingle Creek Panzacola F3-4
Tuesday, March 17, 2020 4:20 PM - 5:10 PM Rosen Shingle Creek Panzacola F3-4
This session will analyze the operating costs of two similar cold storage facilities: One with a modern and efficient recirculated ammonia system, the other with a transcritical CO2 system. The analysis will delve deeper than just utility costs: maintenance, personnel, compliance, insurance, water, chemical and drainage costs will be considered, with an eye to demonstrating the true cost of ownership of the two system types.
Technical Paper #18: Application of IIAR 2 and IIAR 6 Standards and National Regulations for a Refrigeration System of a Bovine Slaughter Plant in Colombia / Aplicación de las normas IIAR 2 y IIAR 6 y regulaciones nacionales para un sistema de refrigeración de una planta de sacrificio (presented in Spanish)
Speaker: Bolívar Monroy, ACAIRE
Tuesday, March 17, 2020 2:05 PM - 2:55 PM Rosen Shingle Creek Panzacola F3-4
Wednesday, March 18, 2020 10:00 AM - 10:50 AM Rosen Shingle Creek Panzacola F3-4
The Colombian national cold chain has experienced increasing regulation in the past few years, including a requirement to comply with industry standards. This session examine the current regulatory environment in Columbia, will discuss the conditions that a refrigeration system in Colombia must also comply with, as well as the implementation of IIAR 2 and IIAR 6 as national standards. In addition, the savings and tax benefits achieved by implementing technological and energy efficiency changes will be reviewed.