4.1. SR 06-15-1998 - Laserfiche WebLink

Home Browse Search

06/ ~/~.8 MON 15:42 F.~T, w, 0b/12/98 15:46 F.,L~. ~lZ 64? 4120 ~EL~UN-RUUI~ ~v~002 Nelson-Rudie & Associates, Inc. Consu~ng Engineers 2575 UnivemJty Ave. West, Suite 140, $L Paul, MN 55114 .Ttmc 12, 1998 Oen~l~ A. Nelmn. P.E. Sc~ F. Rudie, P.E. Audfe~ N. En~ P.E, Mi=l~l D. WoelWle Mr. Rich Czech Elk River Arena t000 School S~rect P.O. Bo.v. 720 Elk River, Minnesota 55330 Dehumid_ifi cation System Elk River A~oia NRA Corem No: 98-056 Dear Rich: As part of th= bidding process for*.he deh,.rm_idificarion system at tho ISlk River. arena we investigated the costs associated with adaing au ealergy r~;overy wheel to the dehumidifier. A large portion of the energy con,wined in heating a~l dehumidifying the building is associated-wi& heating and de, humidifying thc ventilation air. Ventilation air is required to II!alntain acceptable air quality for the occupants o£thc building and for rcclucinS thc contaminant levels associated wit~ the operation of the icc rcsu~aci~g machine. Thc energy recovery whe,~l recovers approximately ?0% of thc cnorgy required' to heat thc outside air in thg winter months and dehumidify the air in thc summ~ months. Wc have estimated that the energy savings l~r year will be $3,6~0.00. This results in a pay back of five years for th~ energy recovery section of the dchumictification ~mit. The total energy costs for ~he facility will increase after our project is completed. We are adding heat to the builain_a which consumes encrgy. We a~e also increasing the dehumidification capacity oflke ventilation $~tem. This will also cons-mn energy. We have previously discussed thc operational bcr~fiis of having a dryer and warmer arena. G1~'644-24o0 F:ax: 61ZI647.4120 E.Marl: nelsanmde~il~n~et Modem: ~1~7-~13.,q