Issue link: http://magazine.progressivegrocer.com/i/689994
June 2016 | progressivegrocer.com | 189 condition with traditional HVAC systems, such as pharmacy areas, ofces, and training or break rooms," he notes, adding that VRF solutions ofer increased energy savings during part-load conditions, and that Mitsubishi Electric's VRF systems are de- signed to vary their capacity to meet a space's exact conditioning demands. "Te unit's inverter-driven compressor automati- cally modulates its speed to provide the exact amount of conditioning needed to cool and heat the space," he says, "rather than overshooting the desired tempera- ture and turning of altogether once meeting the demand. Tis technology saves energy and money." With each generation and update to Mitsubishi systems, continues Cobb, benefts like smaller unit size and more efcient performance are added. Additionally, he's observed smarter HVAC systems meeting the needs of each facility. "More frequently, we are seeing urban renovations where ex- isting buildings are being purchased and repurposed into supermarkets," says Cobb. "Our technology works well in these scenarios, because of the mini- mal impact on the structures versus other traditional HVAC technologies." Keeping it Together Paul Hepperla, director, new solutions development at enterprise product management for Kennesaw, Ga.-based Emerson Climate Technologies Re- tail Solutions, points out that recent advances in grocery refrigeration have also led to advances in supermarket HVAC systems. "Doors on refrigerated grocery cases and air management systems are solutions that improve the shopper's experience and comfort level," he notes, "as well as help the HVAC system operate at the ideal temperature." Hepperla points out that another item that afects supermarket HVAC is dehumidifcation, and that removing moisture from the air allows retail HVAC and refrigeration systems to work better while also improving shopper comfort. A third advance he highlights is the integration of all retail facility systems. "Unlike a commercial build- ing, where HVAC systems are separate and distinct from lighting," he explains, "the HVAC, refrigera- tion and lighting systems can be integrated through a facility management system, for improved control and visibility across all equipment. If a retailer is only monitoring the temperatures in food cases, they are missing out on the potential efciencies and gains from also monitoring their HVAC systems." According Hepperla, technology solutions for food retailers incorporate monitoring and facility controls for HVAC systems, as well as connectivity throughout a store to control HVAC, refrigeration and lighting systems, as well as visibility and monitor- ing throughout an entire chain of stores, for facility insights to improve operational efciency. "Displacement ventilation is on the horizon for retailers," he predicts, explaining that a foor- level difuser the length of a wall or a refrigeration case pushes a tremendous amount of air out at low velocity so that the air pools out onto the store foor, creating a chimney efect that takes the warmer air up and above shoppers, while the cooler air at foor level allows the refrigeration equipment to operate more efciently and maintain a comfortable shop- ping environment. Remote Detection Dan Kubala, director of business development at Siemens Retail & Commercial Systems, in Austin, Texas, points out that managing HVAC systems has been advanced by two key technology enablers: enterprise analytics and data integration. "Enterprise analytics refers to cloud-based systems that automatically monitor HVAC performance over time to provide an indication of that unit or site's operation, in comparison to the overall port- folio," he explains. "Tis allows facility managers to become more proactive in managing a limited repair and maintenance (R&M) budget, focusing on the highest-impact problems frst." Kubala adds that data integration refers to the ability of information produced by one enterprise application — in this case, the energy management system (EMS) — to travel seamlessly to another enterprise application — in this case, the grocer's facility maintenance or work order dispatch man- agement system. "Trough the use of APIs — ap- plication program interfaces — automated system- to-system communication is possible," he notes, "facilitating improved HVAC R&M management while reducing administrative costs." Taken together, these trends allow grocers to reduce R&M budgets by 10 percent to 15 percent, according to Kubala, on top of any energy savings from the EMS, while simultaneously improving the customer experience. "We see technology advancing so that enterprise analytic systems will not only be able to remotely de- tect HVAC problems," he concludes, "but they will be able to automatically take steps to resolve issues." PG We see technology advancing so that enterprise analytic systems will not only be able to remotely detect HVAC problems, but they will be able to automatically take steps to resolve issues." —Dan Kubala, Siemens Retail & Commercial Systems SMARTER SYSTEMS This Mitsubishi installation at the Market at Liberty Place in Kennett Square, Pa., automatically modulates itself.