TY - JOUR TI - Heat transfer characteristics of propylene glycol/water based magnesium oxide nanofluid flowing through straight tubes and helical coils AU - Singh, P. AU - Sharma, P. AU - Gupta, R. AU - Wanchoo, R. JO - Journal of Thermal Engineering PY - 2018 VL - 4 SP - 1737 EP - 1755 DO - ER -