Best Practices

EEVs Should be Standard Equipment, Says U.S. Energy Consultant

Source: http://r744.com/articles/9222/eevs_should_be_standard_equipment_says_u_s_energy_consultant EEVs Should be Standard Equipment, Says U.S. Energy Consultant Electronic expansion valves (EEVs), which are used in commercial display cases to automatically control the flow of liquid refrigerant into a direct expansion evaporator, should be a “standard digital piece of equipment,” said Mike Guldenstern, founder and director of energy efficiency services, llc, an energy …

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Propane… Possible Commercial Refrigerant?

Source Article: https://www.contractingbusiness.com/refrigeration/propane-makes-comeback In a time when refrigerants are being closely evaluated for their environmental impacts, propane (R-290) is emerging as an increasingly viable alternative. With a global warming potential (GWP) of 3 and an ozone depletion potential (ODP) of 0, R-290 poses virtually no threat to the environment. In fact, the Environmental Protection Agency (EPA) …

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Ammonia As a Refrigerant: Pros and Cons

Ammonia As a Refrigerant: Pros and Cons Last month, a 5000 pound ammonia leak occurred at a Boston-area seafood warehouse that killed one worker and forced a shelter-in-place order from Boston Police.  Problematic procedures may be to blame. So as you read the pros and cons of Ammonia as a refrigerant below, remember these key takeaways: ongoing, scheduled evaluations and preemptive maintenance are …

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THE EFFECT OF CONDENSER SCALE ON SYSTEM PERFORMANCE

How many of you have “scale” on your evaporative condenser? [I am guessing your hand might be in the air]. How many of you feel that this is “normal” and something that should be treated as a “side effect” from running an evaporative condenser? [I am guessing your hand is still up]. Although scale buildup …

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CLEAN & EFFICIENT CONDENSERS

This article will target refrigeration systems that utilize air cooled condensers, but the efficiencies to be gained apply to the users of evaporative condensers as well. First, let us remember a couple of important principles of refrigeration; 1) heat (energy) always flows from higher to lower temperatures, and 2) the function of the condenser is …

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