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The Consolidated Energy Solutions (CES) Sahara Express™ Supermarket Dual-Path Dehumidification HVAC System provides a complete and tangible solution to the humidity and energy consumption problems afflicting the supermarket industry today. CES’s solution is straightforward; to maintain supermarket humidity levels at approximately 40% RH and slightly positive store pressurization, by implementing a CES designed and supplied Sahara Express™ dual-path HVAC system.

Humidity is the single largest environmental concern facing supermarkets today, and very few supermarket HVAC systems currently being designed and installed address the overall humidity issue.

The CES Sahara Express™ patented custom dual-path HVAC system provides the optimum balance between::

  • First cost
  • Operating costs
  • Supermarket humidity levels
  • Flexibility in design
As the outside air accounts for more than 85% of the supermarket humidity levels, it is imperative to isolate and remove the humidity at the source before it enters the space. If not efficiently removed by the HVAC system, this water vapour readily migrates to the supermarket refrigeration cases, resulting in a significant increase in refrigerated case loads, case defrost, anti-condensate heating and hoarfrost on the retail product.

Supermarkets consume large amounts of energy, and utility costs have a significant impact on the supermarket’s overall profitability. Humidity has a direct & immediate impact on grocery store energy costs. Based on Electric Power Research Institute (EPRI) research, typical supermarket HVAC systems consume approximately 11% of total store energy, whereas the refrigeration systems consume approximately 50%. On average, it costs more than 4 times as much to remove the store humidity with the refrigerated display cases than with a properly designed HVAC system. Efficiently removing the humidity can result in total store energy savings of 6% - 12%.

Typical supermarket HVAC systems control store humidity by overcooling the entire outside & return air streams, and subsequently reheating the entire mixed air stream, so as not to overcool the retail space. The CES Sahara Express™ dual-path dehumidification HVAC system encompasses a custom made air handling unit engineered to meet the specific supermarket design conditions.

The CES Sahara Express™ dual-path HVAC system maintains positive store pressurization by pre-treating and dehumidifying a pre-determined constant volume of outside air, via a dedicated outside air path, before introducing it to the supermarket retail space. The dedicated outside air coil, leaving dew point temperature, is calculated to dehumidify the outside air and simultaneously manage the store internal latent loads, thus constantly maintaining supermarket design conditions.

In the following diagram, the dedicated outside air coil provides the latent (dehumidification) cooling, while a separate dedicated return air coil provides the sensible (temperature control) cooling. The two air streams are completely separate and not mixed until properly conditioned.

The patented single coil dual-path dehumidification system (see next diagram below) capitalizes on the fact that in the supermarket environment, return air cooling is not always required as the sensible cooling is provided by pulling the return air from under the refrigerated cases. This system is ideally suited for supermarkets as the space sensible heat ratio is much lower than in standard applications.

The single coil dual-path supermarket dehumidification system application enables the flow of the airflow across the coil and gives priority to the latent cooling as required, with no outside air ever bypassing the coil.

CES factory installs the supermarket's preferred DDC controls, to ensure compatibility and interoperability with the supermarket's base controls system. The CES Sahara Express™ dual-path supermarket AHU is delivered to the jobsite completely factory pre-assembled and tested to ensure overall quality control standards.

EPRI has researched and proven that maintaining and controlling supermarket humidity levels is critical to minimizing overall grocery store energy consumption. Implementing CES dual-path supermarket dehumidification HVAC systems will impact directly on:

  • Significantly reduced refrigeration energy consumption
  • Improved overall supermarket HVAC environment
  • Reduced refrigeration maintenance costs
  • Reduced defrost cycling
  • Reduced anti-condensate heating
  • Improved retail product integrity
  • Increased shareholder value



The superheat optimizer system offers a practical solution to commonly overlooked control problems and significantly improves the performance of supermarket refrigeration systems. One of the main causes of inefficiency in supermarket refrigeration systems is the lack of attention paid to superheat control and the resulting negative energy ramifications. The superheat sensor system directly addresses this problem.

The superheat optimizer system can be cost effectively installed or added to any refrigeration system that uses a thermal expansion valve (TXV) such as refrigerated display cases and walk-in boxes.

Superheat sensor value added benefits:

  • faster and more accurate valve setup
  • enables system operation at low superheat settings
  • maintains steady valve control / reduced hunting
  • increases cooling capacity and system efficiency
  • improved retail product integrity
  • energy efficient and utility savings

Click here for more on the Superheat Optimizer System

 



CONSOLIDATED ENERGY SOLUTIONS INC.
343 Roselawn Avenue
Toronto, Ontario, Canada
M4R 1G2


SALES & MARKETING GROUP
Toll free: (888) 598-1198
T: (416) 544-8008
F: (416) 544-8005


ENGINEERING GROUP
T: (416) 489-2592
F: (416) 489-9050


QUEBEC GROUP
T: (450) 883-8118
F: (450) 883-2359


WEBSITE
www.cesgetexcited.com



   

    

 

Consolidated Energy Solutions - Providing the retail food industry with cost effective & energy efficient solutions

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