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Walk-in Commercial Refrigeration

Purchasing Tips

Compressor Capacity

It pays to know your refrigeration requirements before you plan to build or retrofit a commercial refrigeration or freezer system. It is essential to know how much food will be introduced to the refrigerator at a time, its initial temperature and the required storage temperature. Refrigeration over-capacity wastes energy because the system runs less efficiently, while under-capacity can cause food spoilage because it may take too long to refrigerate or freeze the food.

Energy-Efficient Choices

Talk to your refrigeration contractor about:

Refrigeration Cycle Enhancements

Talk to a qualified refrigeration contractor about refrigeration cycle enhancements such as:

Cooling

Consider the options and corresponding operating costs for air-cooled, once-through water-cooled and re-circulating water-cooled options. Once-through cooling is simple and quiet, but it is an expensive option because of the cost of water used and the additional cost of sewage treatment normally charged by the water supply authority.

Heat Recovery

Consider heat recovery from condenser cooling water. Water cooling opens up the possibility of compressor heat recovery for use in domestic water heating. Heat recovery from cooling water has the potential of saving a significant amount of water and energy for domestic water heating.

If heat recovery from condenser cooling water is not practical for domestic hot water heating, consider the possibility of locating the condenser coil(s) indoors and using the reject heat for heating the building in winter, with provision for exhausting excess heat outdoors to prevent overheating and avoiding additional air-conditioning load in the summer.

Next: Operating and Maintenance Tips