Originally Posted by
hookster
That is because we have a mass of 'sales engineers' who can only select AC from published data with no idea!
Is this for a commercial application? What is your design Kg throughput in product load (Meat). Without this it's impossible to select.
You need to select your equipment to hold room at 0 - 4 degC, Set point at 2 DegC with a diff on 1 DegC. The RH on selection of your Evaporator should be aimed at 70 - 80 % RH (optimal 78%). Over size your fans from standard evaporator selections as you want continuous full air flow across the meat at all times 0.5 - 2 m/s. Evaporator should be full stainless steel. I like to select my equipment with high evaporation temperatures to minimise cold draft affecting enzyme action on the meat being affected.
For a commercial application you need to consider adding humidity control via humidifier and fresh air make up with filtration to reduce yield loss and UV sterilisation. Key is temperature band RH 2 DegC & 78% RH. Achieve that and your client will be pleased, fail and their yeild loss is too great to be profitable business (Dry aging is an expensive meat production process)