Abtar Singh, President,  Singh360 Inc. If you’re retro-commissioning a supermarket store, you’ll save money by having a licensed refrigeration technician on your team. This post explains why. Retro-commissioning usually has three goals: Save energy Identify maintenance problems Identify candidates for future energy-conservation projects. Because refrigeration equipment consumes more energy and requires more maintenance than any other component in a supermarket, it pays to

By Abtar Singh, President, Singh360 Inc. In this post you’ll see how variable-frequency drives (or VFDs) can generate a payback of 1.5 to 5 years in supermarkets. You’ll also see which uses of VFDs offer the fastest payback and highest return on investment (or ROI). How VFDs work VFDs reduce electricity use by adjusting the speed of a fan motor to match its load. When HVAC or refrigeration equipment needs less airflow, VFDs reduces motor speed. They also increase motor speed when a

By Abtar Singh, President Singh360 Inc.   By applying seven easy rules of thumb, you can quickly estimate potential energy savings for refrigeration systems in a supermarket—even if you’re not an engineer. With these rules you can make quick estimates in your head or on the back of an envelope. Your estimates are likely to be pretty accurate, even without a detailed audit. This information can help you spot big opportunities for potential savings. You’ll feel smart, and you

By Abtar Singh, President - Singh360  Inc. When it comes to reducing energy in supermarkets, we either focus on refrigeration (because it consumes 40-50% of the total energy) or lighting (which is pretty easy to understand).  However, HVAC equipments (almost 20% of the store power) are often overlooked though they can significantly impact energy consumption, provide customer comfort for better shopping experience and reduce food product quality and shrinkage. So what are the ways HVAC

WHAT YOU SHOULD KNOW ABOUT PROTOCOLS WHILE SELECTING A BUILDING MANAGEMENT SYSTEM (BMS)?   Protocols are languages by which two devices communicate and exchange data.  These devices are microprocessor-based products, such as an input/output board, roof top unit controller (RTU), Chiller controller, user’s laptop/desktop computer or even central enterprise servers.  The picture below shows that the master building management system (device) communicates with devices, such as RTU,

Lessons in Energy & Maintenance Management from One of the Best in the Grocery Business A New Perspective for U.S. Grocery Retail: Case Study of Fresh & Easy Neighborhood Markets The Fresh & Easy story shows that there are dozens – maybe hundreds – of ways to achieve breakout operating efficiency through creative thinking. Among the company’s many innovations, Fresh & Easy has probably gone further than any other retailer in the world to integrate the closely