Efficient compressed air production

i.HOC is the new inte­grat­ed attach­ment rota­tion dry­er for dry-run­ning rotary screw com­pres­sors from Kaeser Kom­pres­soren. It pro­vides a reli­able and sta­ble sup­ply of com­pressed air with pres­sure dew points to minus 30 degrees Cel­sius, even in chal­leng­ing envi­ron­men­tal con­di­tions – and also saves energy. 
i.HOC stands for “inte­grat­ed Heat Of Com­pres­sion dry­er”. This means that the heat, which is a by-prod­uct of air com­pres­sion, is used to regen­er­ate the des­ic­cant. The heat is essen­tial­ly avail­able for free, as no addi­tion­al ener­gy is required to pow­er the dry­ing process. The result: reli­able air dry­ing with max­i­mum effi­cien­cy and low­er ener­gy costs — even for vary­ing quan­ti­ties of air.
Com­pared to sys­tems already on the mar­ket, i.HOC takes advan­tage of the entire quan­ti­ty of avail­able heat. This means that low pres­sure dew points can be reli­ably achieved even in chal­leng­ing con­di­tions, such as low pres­sure, high tem­per­a­ture or low load oper­a­tion. This is made pos­si­ble by a high-effi­cien­cy radi­al blow­er with vari­able con­trol, which serves two main pur­pos­es: to com­pen­sate for the pres­sure lost in the dry­ing process and auto­mat­i­cal­ly adapt the dry­ing process to chang­ing oper­at­ing con­di­tions. Full-flow regen­er­a­tion, togeth­er with an addi­tion­al patent­ed process, ensures depend­able dry­ing, with­out addi­tion­al elec­tri­cal heat sources or cool­ers, even at ambi­ent tem­per­a­tures as high as 45 degrees Celsius.
The inte­grat­ed Sig­ma Con­trol 2 com­pres­sor con­troller per­fect­ly man­ages the entire process, con­trol­ling the radi­al blow­er and drum dri­ve of the i.HOC inte­grat­ed rota­tion dry­er. Regard­less of the oper­at­ing con­di­tions or the required air deliv­ery vol­ume, the con­troller auto­mat­i­cal­ly adjusts accord­ing­ly to ensure reli­able and con­sis­tent pro­duc­tion of pres­sure dew points down to minus 20 degrees Cel­sius, and under spe­cial con­di­tions down to as low as minus 30 degrees Celsius.
More­over, the Kaeser i.HOC sys­tem pro­vides impres­sive heat recov­ery rates. The full-flow regen­er­a­tion process with water-cooled dry-run­ning rotary screw com­pres­sors allows the com­pres­sor cool­er to be used for heat recov­ery pur­pos­es. This sys­tem elim­i­nates the heat loss­es asso­ci­at­ed with exist­ing sys­tems caused by sep­a­rate dry­er cool­ers – and saves the cost of ener­gy that would have to be expend­ed to pro­duce process heat or to pro­vide space heating.