Erdem CUCE, Pınar MERT CÜCE, Tamer GÜÇLÜ

The Effect of Nanofluid Usage on Electricity Consumption in Thermoelectric Refrigeration Application: An Experimental Study

In this study, the effects of nanofluid use in thermoelectric coolers on electricity consumption were investigated. A water-cooled block was placed on the hot side of the TEC in the designed system and a water-to-air heat exchanger was added to the system to cool the coolant. By adding 1% by mass of three distinct nanoparticles (Al2O3, TiO2 ve SiO2) to the fluid, the temperature differences of the cooler cabinet were tested at three distinct outdoor temperatures (18, 24 and 30 °C). In addition, to measure the performance of the cabinet when loaded, 1 litre of water was left in the cabinet and the tests were repeated. In the case where water without nanoparticle addition, which is the reference case, was used as the coolant, the measurement was made for 1 hour and the final temperature of the cooler cabinet was observed. Then the times to obtain the same cooler cabinet temperature by using various nanoparticles were observed. It has been observed that the temperature of the cooler cabinet drops to the desired temperatures earlier in cases where nanofluid was used compared to cooling with water. For this reason, this study is important in terms of efficient use of energy resources.

TermoelektrikBuzdolabıUygulamalarında NanoakışkanKullanımınınElektrikTüketimi ÜzerindekiEtkisi:DeneyselBirÇalışma

Buçalışmada,termoelektriksoğutuculardananoakışkankullanımınınelektriktüketimi üzerindekietkileriaraştırılmıştır.BuamaçlatasarlanansistemdeTEC'insıcaktarafınasu soğutmalıblokyerleştirilmişvesoğutucuakışkanınısısınıalmakiçinsistemesudanhavaya ısıeşanjörüeklenmiştir.Akışkanakütlece%1oranındaüçfarklınanopartiküleklenerek soğutucukabininsıcaklıkfarklarıüçfarklıdışortamsıcaklığındatestedilmiştir.Ayrıca soğutucukabinindoluolmasıdurumundakiperformansınıölçmekiçinkabine1litresu bırakılmışvetestlertekrarlanmıştır.Soğutmasıvısıolarakreferansdurumolan nanopartikülilavesizsukullanılmasıdurumunda1saatboyuncaölçümyapılmışve soğutucukabininsonsıcaklığıbelirlenmiştir.Dahasonraçeşitlinanopartiküller kullanılarakaynısoğutucukabinsıcaklığınıneldeedildiğizamanlargözlemlenmiştir. Yüksüzkoşullardaaynısoğutmakabinisıcaklığınaulaşmakiçintüketilenenerjimiktarı karşılaştırıldığında,referansdurumagöreenyüksekiyileştirmeAl2O3-Sunanoakışkanıile %57olarakhesaplanmıştır.Yüklükoşullarda,18°CortamsıcaklığındaAl2O3-Su nanoakışkanıkullanıldığındaenerjitüketimindeenyüksekiyileşme%50olarakelde edilmiştir.Referansdurumagöretümnanoakışkankullanımdurumlarındaenerjitasarrufu sağlandığıgözlenmiştir.Nanoakışkankullanıldığıdurumlardasoğutucukabinsıcaklığının suilesoğutmayagöreaynısürelerdedahadüşüksıcaklıklaradüştüğü,yanidahaazenerji tükettiğigözlenmiştir.Bunedenlebuçalışmaenerjikaynaklarınınverimlikullanılması açısındanönemlidir

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