Wired for Success:
The Connectivity Blueprint of the OLPP

Suction-to-Liquid Heat Exchange Accumulator: The Suction-to-Liquid Heat Exchange Accumulator protects the compressor, preventing liquid slugging and prolonging its operational life. It boosts efficiency through improved heat transfer and decreased superheat setpoints, resulting in energy savings. Functioning as a flow stabilizer, it maintains system consistency during varying loads. Moreover, it regulates refrigerant temperature, minimizing the chance of compressor overheating, thus enhancing system reliability and overall performance.

PID Control for Compressor Staging: Proportional-integral-derivative (PID) control regulates processes. In compressor staging, PID control of temperatures, pressures, flow, and speed manages multiple compressors' on/off cycling to match the cooling demand more precisely. Monitoring and controlling these processes optimize the performance of the compressors and ensure they operate within their intended ranges – gaining better efficiency and longevity.

Medium Temp/Low Temp Capabilities: The refrigeration platform incorporates a two-stage compression system, addressing the demands of dual temperatures. This design enables it to manage both medium-temperature condensing for specific applications and low-temperature requirements for others, enhancing its versatility for various cooling purposes. Beyond its temperature flexibility, the two-stage compression system streamlines the refrigeration platform by removing components linked to low-temperature operation. This optimization fosters a more efficient and simplified design, which is particularly beneficial for applications requiring a broad spectrum of temperature ranges.

VFD on Compressors: Variable Frequency Drives (VFDs) control electric motors' speed, ensuring precise refrigeration alignment with varying load requirements. By applying VFDs to compressors, Sensori™ adjusts the compressor's speed and capacity according to the system's cooling demands. This achieves energy savings, precise control, and reduced stress on the compressor.

Reduced Discharge Superheat: Discharge superheat refers to the temperature difference between the refrigerant gas leaving the compressor and its saturation temperature at the corresponding pressure. Lower discharge temperatures naturally result in reduced discharge superheat. With a lower discharge superheat, the system generates less extra heat. This contributes to better performance and efficiency of the refrigeration system.

Enhanced Compression Efficiency: The compression ratio measures how hard a compressor must work. Since compressing refrigerant requires energy input, a lower compression ratio means the compressor works more efficiently. Compression ratios tend to be lower when compressor discharge temperatures are kept low, leading to improved efficiency, reduced energy consumption, and lower operational costs over the system's lifespan.

Cooler Running Compressors: Cooler running compressors experience less wear and tear, require less energy, and maintain optimal operating conditions for the compressor and the refrigerant. This results in improved system efficiency, reduced energy consumption, and longer equipment life.

Automation System: The automation system, using variable frequency drives (VFDs), helps the condenser and compressors adjust their operation based on sensor data, adapting to changing conditions. This reduces the compressor's on/off cycles and ensures a steady temperature difference across the evaporator. Adjusting refrigeration in line with demand reduces mechanical strain and energy consumption, regardless of occupancy.

Refrigerant Adaptability: Based on a zero-leak rate, the advanced low-pressure design uses non-flammable, non-toxic, low Global Warming Potential (GWP) next-generation HFO refrigerants – prioritizing both the environment and personal safety. The highly adaptable system can seamlessly transition to future low-pressure refrigerants with a simple setting change in the control panel and requires no equipment or operation changes.

Extra Pass Subcooled Loop in Condenser: Adding an extra pass subcooled loop in the condenser involves routing refrigerant through an additional loop that facilitates further cooling of the refrigerant beyond its saturation point. This results in increased subcooling, where the liquid refrigerant's temperature is lower than its saturation temperature at the given pressure. Increased subcooling has multiple benefits, including improved system capacity, efficiency, and refrigerant control.

Complete Floating Head Control: A "floating head" control strategy adjusts the condensing pressure setpoint based on the outdoor ambient temperature. As the outdoor temperature changes, the adaptive control of Sensori™ adjusts the condensing pressure to maintain efficient heat rejection. This helps prevent overcooling or undercooling of the refrigerant for significant energy savings and optimizes system performance.

Reduced Maintenance and Moving Parts: A simplified system with fewer complexities, moving parts, and less complicated piping architecture requires less maintenance. The fewer components, the less chance there is for mechanical failures. This leads to lower maintenance costs, reduced downtime, and improved operational reliability.

Digital Integration: The Sensori-integrated OLPP undergoes meticulous design and engineering, integrating the SCADA system, IPC, GateManager, and HMI. It replaces conventional mechanical pressure controls with advanced digital controls, digitizing the entire system. This transformation enhances accuracy and responsiveness, eliminating the reliance on mechanical components prone to degradation over time, thereby mitigating maintenance issues. The digitalization process enables precise control of all components within the system.

Enhanced Leak Prevention: A simplified and sealed system design inherently reduces the opportunities for refrigerant leaks. This is not only environmentally responsible but also helps you comply with regulatory requirements and saves costs on replacement refrigerants.

Redundant Control: Using several smaller compressors with VFD controls introduces redundancy by distributing the load, providing operational flexibility, isolating potential issues, improving energy efficiency, and offering scalability. This approach enhances the overall reliability and resilience of the system in the face of varying demands and potential equipment failures.

Built-in Control for Evaporator Fan Systems: Evaporator fans circulate air within refrigerated cases. Sensori™ delivers precise control for efficient fan management. Every individual case- control is equipped with Electronically Commutated Motors (ECMs) that offer variable speed control, improving energy consumption and overall efficiency. Modulating ECM speed based on room temperature, evaporator temperature, or humidity helps optimize cooling and energy usage.

Multiple Defrost Setups: Defrosting is crucial to remove ice buildup on evaporator coils. Sensori™ easily accommodates different cases or sections requiring varied defrost schedules based on humidity, usage patterns, and other environmental conditions.

Temperature and Humidity Control for Individual Cases: Sensori™ incorporates temperature and humidity control within individual cases and ensures that products are stored under optimal conditions. This includes maintaining specific temperature and humidity ranges for various products.

Door Switches: Advanced Door switch sensors in cooler and freezer systems continuously monitor the frequency and duration of door openings, contributing to temperature control, energy efficiency, and the preservation of refrigerated products. These sensors are adept at identifying usage trends. They can promptly send alerts to ensure the integrity of the stored items.

Reduced System Stress: Electric defrost minimizes the stress caused by the expansion and contraction of piping that can occur during hot gas defrost cycles. This can contribute to longer equipment and compressor lifespan, reducing maintenance and replacement costs. It's more energy-efficient, enabling better control over defrost cycles and reducing long-term energy expenses. Additionally, electric defrost simplifies system design by eliminating the need for extra valves, minimizing the potential for refrigerant leaks, and enhancing temperature control, ensuring stable and accurate temperature maintenance within the refrigerated space.

Temperature and Humidity Control for Individual Cases: Sensori™ incorporates electronic temperature and humidity control within individual cases and ensures that products are stored under optimal conditions. This includes maintaining specific temperature and humidity ranges for various products and alarm notifications for temperatures exceeding setpoints.

Anti-Sweat Door Heaters on Temperature: Anti-sweat heaters are used to prevent condensation and frost formation on doors and frames of refrigerated cases. Sensori™ activates these heaters based on temperature thresholds and helps prevent excessive energy usage while ensuring efficient anti-sweat control.

Built-in Control for Evaporator Fan Systems: Evaporator fans circulate air within refrigerated cases. Sensori™ delivers precise control for efficient fan management. Every individual case- control is equipped with Electronically Commutated Motors (ECMs) that offer variable speed control, improving energy consumption and overall efficiency. Modulating ECM speed based on room temperature, evaporator temperature, or humidity helps optimize cooling and energy usage.

Multiple Defrost Setups: Defrosting is crucial to remove ice buildup on evaporator coils. Sensori™ easily accommodates different cases or sections requiring varied defrost schedules based on factors like humidity, usage patterns, and other environmental conditions.

System Logging and Graphing: System logging involves collecting, recording, and analyzing operational data and events of the refrigeration system over time. Graphing these logs helps analyze system performance, identify trends and anomalies, and make informed decisions about maintenance and optimization.

Integrated Process Controller (IPC): Monitors and enhances the operation of refrigeration equipment to maintain the desired temperature and other environmental conditions. To achieve this, IPCs leverage sensors and data analysis to make immediate adjustments to the refrigeration system, thereby guaranteeing efficient and uniform performance.

Plug & Play: The IPC plays a crucial role by automatically collecting and consolidating data into comprehensive user screens. Systems arrive pre-programmed and ready for installation, allowing users to access essential data immediately. The automated process simplifies the user experience, making critical information readily available without the complexities of manual configuration.

Pushing Data: Systems are equipped with sensors and controllers that collect data related to temperature, humidity, pressure, compressor status, door openings, and other relevant parameters. These data collection points serve as the source of information, which is then pushed to a secure server (GateManager) and made accessible for reporting and historical analysis. The live data guarantees the well-being and functionality of the system, while historical data serves as a valuable asset for evaluating the system's performance and identifying trends.

Email and Alarm Management: Automatic email notifications & alarm management alert users & maintenance personnel about critical system events. This enables timely responses to issues, reducing downtime & potential product loss.

Complete System Diagnostics with Operating Envelope: With access to detailed diagnostics for compressors, evaporators, and all connected components, Sensori™ is invaluable for maintenance and troubleshooting. It identifies issues early, prevents downtime, and optimizes performance. An envelope of optimal operations is defined with AI and maintained with Machine Learning, allowing the system to self-assess and adjust.

Energy Management: All systems are equipped with an integrated energy profile from the outset, eliminating the need for later add-ons. This integrated approach ensures complete transparency regarding the equipment's energy consumption, allowing for precise and informed energy management.

Easy and Secure Remote Access: Providing remote access to your refrigeration system is crucial for monitoring and managing its performance from a distance. Oxford's LPP has integrated programming designed to facilitate this remote access with extensive cybersecurity features. This ensures authorized users can monitor, configure, and troubleshoot the system without being physically present on-site. Adjusting setpoints and monitoring are quickly done remotely from a phone, touch screen, or computer when required, offering complete system protection.

Gatemanager software is a web-based user interface designed to gather information from the system and transmit the data through a secure server. It establishes an encrypted connection between the equipment and personal computers or smart devices and allows data to flow between them. Technicians can then remotely access and view real-time data, enabling them to monitor, adjust, and protect equipment as if they were on-site. This system facilitates efficient and secure remote equipment management and enhances operational control.

Connects Over LAN (Local Area Network): Sensori Control doesn't exclusively rely on Internet Protocol (IP) for its functionality. It is designed to operate even without an IP connection, utilizing its own Local Area Network (LAN). This capability enables Sensori Control to establish communication, share data, and operate within a confined network environment independent of external networks like the Internet or a Wide Area Network (WAN). This means Sensori still facilitates communication and shares essential data for efficient equipment performance when internet connectivity is limited or unavailable.

WAN (Wide Area Network): Once processed, relevant data is distributed or sent over a Wide Area Network (WAN). WAN connections are crucial for remote accessibility, as they provide the infrastructure for devices to communicate and interact over large distances, including accessing resources and systems remotely with cell phones or computers.

No IT personnel Required: No elite skill sets are needed to manage systems well. The simplified setup and automatic configuration of Sensori™ reduce the complexity of implementing remote access and control. The system is easily connected via standard Ethernet or 12-wire cables for data transmission, plug-and-play monitoring, and control. Not requiring dedicated IT personnel makes the system more accessible and reduces associated labor expenses.

Machine Advisor: An optional cloud-based analytics application that compliments GateManager is available as a secondary insights service. It transforms machine-generated data into valuable insights that are easy for all skill levels to interact with. It adds context to real- time data, alarms, events, and historical records with recognizable icons and customizable images, improving system management and making operators more effective. The program's user-friendly format enhances the comprehensibility of information and facilitates easy sharing. As an optional component, Machine Advisor is the sole aspect of the system, incurring a nominal additional charge as it operates as a cloud service. All other functionalities of the OLPP system are included and integrated.

Cloud Storage: Instead of being stored on a local computer or on-premises servers, data is uploaded to these servers over the internet. The accessibility of cloud storage ensures that data from equipment can be securely stored and accessed from anywhere with an internet connection, promoting collaboration and enabling real-time decision-making. Additionally, cloud services incorporate robust backup and redundancy measures, safeguarding equipment- generated data against potential loss.

Accessibility: Thanks to GateManager's VNC (virtual network computing), a direct connection makes login access possible on smart devices. Devices linked to the WAN, accessible from anywhere with internet connectivity, can retrieve processed data. These devices can include computers, smartphones, tablets, and other connected hardware. Complete machine control, including programming and information access, is available. Remote adjustments to setpoints and monitoring can be quickly executed when necessary for temperature or pressure changes, ensuring comprehensive system protection.

Renewables Offset: With a plug-and-play design, integrating Solar Panels into any system is simple and efficient. The OLPP seamlessly connects to the main power supply of each unit –redirecting power by harnessing free energy from the sun. This solar energy serves to counterbalance the energy consumption of the refrigeration system. During sunny periods, the panels utilize free energy to offset grid-based consumption. The OLPP solar option is readily available as an off-the-shelf solution for any system or can be integrated to enhance the efficiency of existing OES systems in the field.