International Journal of Bio-Science and Bio-Technology Vol.6, No.3 (2014), pp.123-132 http://dx.doi.org/10.14257/ijbsbt.2014.6.3.15 ISSN: 2233-7849 IJBSBT Copyright ⓒ 2014 SERSC Blood Warmer Using Peltiers Park Suksantisakul 1 , Noppadol Maneerat 2 , Thongchan Nakprik 3 and Ruttikorn Varakulsiripunth 4 1, 2 Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang Bangkok, Thailand 10520 3 Department of Anesthesiology, Uttaradit Hospital, Uttaradit, Thailand 53000 4 Faculty of Information Technology, Thai-Nichi Institute of Technology, Bangkok, Thailand 10250 1 parkemon58@hotmail.com, 2 kmnoppad@kmitl.ac.th, 4 ruttikorn@tni.ac.th Abstract The purpose of this paper is introduces blood warmer system to easy for anesthesiologists and patients for infusion and facilitate of anesthesiologists work for using blood bag. The system is contained in a rectangular box, inside of which consists of two separate chambers: one housing the electronics inside have; circulating fans, heat sinks, transformer (12v, 100w, 8.3amp) and a PCB with an SG3525 IC for regulation of temperatures in the adjacent chamber and the other the blood warming components inside have is fitted with a shaker, EPDM(Ethylene Propylene Diene Monomer) cushion sheets, a digital thermometer, and two thermo-sensor. Two peltiers and EPDM cushion sheets are employed in the proposed system to quicken the warming of blood bags. Nonetheless, three experiments were conducted with three different blood warming configurations: using one peltier without the EPDM cushion sheets, two peltiers without the EPDM cushion sheets, and two peltiers with the EPDM cushion sheets. The finding indicates that the use of two peltiers together with the plates produces the best results. Keywords:-peltier; EPDM(Ethylene Propylene Diene Monomer); anesthesiologists 1. Introduction At present before anesthesiologists infu se blood into a patient’s body, the blood which is preserved in a blood bag and stored in a cold storage is warmed to the patient’s body temperature. Some current practices in hospitals to prepare blood for infusion are the use of a heat solder, warm water [1], the screw blood warmer [2], heater [3], running water as well as leaving the blood bags to room temperature. The methods are inefficient, time-consuming and inconvenient for the anesthesiologists. To improve work efficiency of the medical staff, this research paper has therefore introduced a higher efficiency blood warmer system. The system is portable and simple to operate. The proposed blood warmer system utilizes two peltiers of two differing temperatures. As one side of a peltier generates more heat than its other side, the hotter sides of the two peltiers are facing the blood shaker of the blood-warming chamber. The organization of this research paper is as follows: Section I is the introduction part and Section II is concerned with the workings of the peltiers. The design and concept of the proposed blood warmer system are respectively discussed in Sections III and IV. Section V deals with the experimental results. The conclusions and future work are provided in Section VI.