How to take prac­ti­cal steps to­ward en­ergy ef­fi­ciency

DEMM Engineering & Manufacturing - - FOOD -

The Sus­tain­able Farm­ing Fund from the Min­istry sup­ports New Zealand winer­ies for Pri­mary In­dus­tries. It pro­vides rec­om­men­da­tions on im­prov­ing ef­fi­ciency in wine mak­ing.

Tools are avail­able to help them reach their goals, such as the bench­mark­ing and en­ergy and wa­ter sav­ings tool, de­vel­oped in Cal­i­for­nia and adopted to New Zealand con­di­tions, and the win­ery en­ergy saver tool­kit, cre­ated by South Aus­tralian Wine In­dus­try As­so­ci­a­tion.

Th­ese tools pro­vide prac­ti­cal ad­vice on cut­ting down en­ergy costs, and de­ter­min­ing the main ar­eas re­quir­ing im­prove­ment, as re­frig­er­a­tion and tank stor­age, pump­ing, com­pressed air, hot wa­ter, HVAC, and light­ing.

There are also knowl­edge­able con­sul­tants and sup­pli­ers of equip­ment, help­ing winer­ies invest wisely, achiev­ing a quick re­turn on in­vest­ment and get­ting tan­gi­ble re­sults.

An av­er­age win­ery uses 5000 to 10,000Lts of hot wa­ter a day, with wa­ter heated up to 90°C for ster­il­iz­ing pur­poses, or up to 65°C for bar­rel and tank clean­ing, or up to 40°C for gen­tle warm­ing of the prod­uct.

Con­dens­ing boil­ers re­cover the heat lost by wa­ter vapour in the flue gas, which saves on fuel con­sump­tion. Re­plac­ing a 15-year-old boiler to a con­dens­ing one will cut on nat­u­ral gas or LPG costs by up to 30 per cent.

Saint Roch con­dens­ing boil­ers have 90 per cent to 96 per cent ef­fi­ciency de­pend­ing on the op­er­at­ing tem­per­a­tures, which is 15-30 per cent higher than con­ven­tional boil­ers.

Thanks to the premix burner, which guar­an­tees max­i­mum mix­ing of gas and air for com­bus­tion, emis­sions of NOx and CO are 80-90 per cent less com­pared to con­ven­tional boil­ers (NOx < 20 ppm, CO < 35 ppm).

In­te­grated con­trol sys­tems al­low users to ad­just such pa­ram­e­ters as tem­per­a­ture to their re­quire­ments. Con­dens­ing boil­ers can be com­bined with so­lar power, mak­ing hot wa­ter even cheaper.

There is also a pump that of­fers high prod­uct re­cov­ery, sav­ing both the prod­uct and en­ergy – it’s an ec­cen­tric disc pump from Mou­vex.

This pos­i­tive dis­place­ment pump has low lin­ear speed and high vol­u­met­ric ef­fi­ciency that al­lows it to act as a me­ter­ing de­vice, pre­cisely mea­sur­ing equal vol­umes of prod­uct for bot­tling or pack­ag­ing. Mou­vex pumps im­prove the qual­ity of the prod­uct, al­low­ing trans­fer of grapes with­out smash­ing the seeds. This pump is used in winer­ies for prod­uct trans­fer from stor­age tanks to tan­gen­tial fil­ters, or to bot­tling tanks.

The Win­ery En­ergy Saver Tool Kit gives highly valu­able rec­om­men­da­tions on man­ag­ing com­pressed air en­ergy con­sump­tion. If you need a re­place­ment, then an Hi­tachi screw com­pres­sor, com­bin­ing en­ergy sav­ings of­fers low en­vi­ron­men­tal im­pact and low run­ning costs. Th­ese air com­pres­sors con­sume less oil, are quiet and re­li­able.

One of the best ways to cut on the com­pressed air costs is not to use com­pressed air for cer­tain op­er­a­tions, such as dry­ing bot­tles prior to la­belling.

The so­lu­tion here would be blower op­er­ated air knives, sav­ing up to 85 per cent in run­ning costs com­pared to com­pressed air knives. They are easy to in­stall and re­quire min­i­mum main­te­nance. Air knives can be used not only for bot­tle dry­ing but also for fruit dry­ing.

The size of the win­ery, its lo­ca­tion, and pres­ence of ac­com­pa­ny­ing busi­nesses, cur­rent tech­nolo­gies and fuel avail­abil­ity de­ter­mine the best so­lu­tions and the most suit­able equip­ment for the par­tic­u­lar en­ter­prise. Hurl Nu-Way (HNW) will be happy to as­sist you in choos­ing the small prac­ti­cal steps lead­ing to tan­gi­ble re­sults in sav­ing en­ergy.

www.demm.co.nz/read­eren­quiry #141120

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