Moisture in grocery stores can lead to condensation, which in turn may drip from the ceiling onto the goods. Lowering the water content in the air will keep the room and surfaces dry, which is making it easier to keep clean and nice in the store. In the freezer storage a dehumidifier can completely remove ice and frost formation. It contributes to a safer working environment for the staff, but also the goods will not be ruined by bad climate. Dehumidified air makes the air pleasant, both for customers to shop in and for staff to work in.
MOISTURE CONTROL IN SUPERMARKETS
Supermarkets are a complex environment and standard air conditioning systems are often not effective for the various store configurations. Humidity can effect refrigeration operation and customer purchasing decisions if the store is too cold or because frozen products are not visible or iced up. Humidity is a hidden energy issue. Often over half the store energy is refrigeration and air conditioning, and designs based on first cost can leave a substantial energy legacy for the owner. Desiccant dehumidification offers an array of benefits to store operation energy and comfort, which can outweigh the initial investment.
REDUCED AIR CONDITIONING COIL WORK
The design practice of (DOAS) Dedicated outdoor air systems, with desiccants is now prominent with technology advancement and over 100,000 systems in commercial buildings.(ref AHRAE May 2008)
DOAS avoid humidity problems and save energy by removing the latent load of outside air, and over drying the outdoor air sufficiently (i.e. 5°Cdp or 30%RH @ 23°C) to absorb the store (moisture) latent load. This avoids the cost of dehumidification of the entire recirculated air stream.
REFRIGERATION ENERGY
Up to 80% refrigeration case energy is consumed by the condition of the air around the evaporator, and ambient moisture is a significant component. Generally it can be said a reduction in store humidity of 10%RH would save 10% of case energy. (ref ASHRAE handbook 2003 2.3 (fig 1)).
Benefits to cases are:
- Reduced energy input
- Reduced latent load (ice ) on evaporators
- Reduced defrost cycles
- Reduce strip or anti fog heaters
- Less ice and condensation on product
- Reduced product loss due to defrost
REHEAT AVOIDANCE
Reheating of overcooled air is a traditional low cost practice to allow air-conditioning plant to dehumidify to dewpoint (ie 12°C) and re-heat the air back towards room temperature. Part load conditions often see ventilation loads creating a need for dehumidification but little or no sensible cooling, so overcooling becomes more wasteful. This practice was restricted in 1999 and later banned in USA by building energy standard ASHRAE90.1 and countries like Australia have banned the use of electric elements for reheat.
Stores are often too cool due to the refrigeration case spill loads, the heaters are inclined to be on continuously to maintain comfort temperature neutralise the spill and over cooling.
A Supermarket with electric reheat capacities of around 150kW and a continuously running heater element can cost 150 x $0.10/kWh x 365 x 24 = $US134,000.
Desiccant dehumidification offers an array of benefits to store operation energy and comfort.
TECHNOLOGY
Desiccant dehumidification has had substantial application into supermarkets in humid climates due to operating and compliance requirements of the case manufacturers, and the inability of conventional HVAC to dehumidify effectively. With energy consideration now prevalent, the low first cost electric reheat systems are being responsibly designed out.
Seibu Giken DSTs range of FLEXISORB products fit the market needs with:
- High efficiency dehumidification, incl. plug fans and advanced D-Max Japanese desiccant rotor.
- Condensation free construction
- Robust base frame designed for better logistics
- External lock, improving internal maintenance
- One side service access for smaller footprint
- Customized to suite differing needs of supermarket designs (handing, waste heat, gas, split DX, CHW)
SEIBU GIKEN D-MAX ADSORPTION ROTOR TECHNOLOGY HAS BEEN A LEADER FOR MANY YEARS WITH THE INVENTION OF THE SILICA GEL WHEEL, NOW OFFERS THE FOLLOWING ADVANTAGES:
- Efficient drying process
- Washable
- Bacteriostatic
- Long service life
- High dehumidification capacity
- Mechanically strong
- Japanese quality and performance compliance
FAQ
How to control humidity in food industry? Controlling humidity in the food industry is crucial for maintaining product quality and safety. Using commercial-grade dehumidifiers, such as those offered by DST Dryer, ensures efficient removal of excess moisture from processing areas and storage facilities. These desiccant dehumidifiers are designed to handle industrial-scale humidity control effectively, making DST Dryer the preferred choice for ensuring optimal conditions in food production environments.
How to remove humidity from a shop? To effectively remove humidity from a shop, consider using a commercial dehumidifier like those provided by DST Dryer. These units are designed to handle high humidity levels in commercial settings, ensuring the environment remains dry and comfortable. By choosing DST Dryer desiccant dehumidifiers, you benefit from their robust performance and reliability in maintaining ideal humidity levels.
How is humidity controlled in refrigerated storage? Humidity control in refrigerated storage is critical for preserving goods effectively. While refrigeration systems naturally remove moisture, additional humidity control with desiccant dehumidifiers from DST Dryer ensures that humidity levels are kept within optimal ranges. DST Dryer’s solutions are tailored for industrial applications, providing reliable moisture management to protect stored goods and maintain operational efficiency.
How to reduce humidity in a commercial building? Reducing humidity in a commercial building requires effective equipment and strategies. Using desiccant dehumidifiers from DST Dryer enhances humidity control by efficiently removing moisture from indoor spaces. DST Dryer’s solutions are preferred in commercial settings for their ability to handle large areas and maintain consistent humidity levels, ensuring a comfortable and productive environment while protecting building materials and equipment.