The condenser needs to be cleaned so that the performance of heat exchanger can optimally. This research was conducted on a water cooled chiller machine with capacity 650TR and type refrigerant used is R134a determine after cleaning process. electric power by compressor’s motor before there fouling, fouling tubing were 174,80 kW, 191,22 kW 174,42 respectively. mass flow rate cooling 98,01 kg/s,...

Pressure waves and vibrations in the heart and great vessels may be conducted to a manometer outside the body by a system of tubing filled with fluid. More than a metre of tubing is usually needed as the circulation is entered at an arm vein. Any such system has the following defects. 1. Delay in the transmission of the low frequency pressure waves to the manometer: the delay will vary slightly...

The effects of changes in distal resistance on stenotic resistance were studied in vitro. Physiological saline was passed through the left carotid artery obtained from the dog, flexible rubber tubing, or through solid polyethylene tubing with a constant perfusion pressure or with a constant flow rate. Various stenotic resistances were established using a screw type constrictor and the distal re...

BACKGROUND We assessed the potential impact of infusion tubing on blood glucose imbalance in ICU patients given intensive insulin therapy (IIT). We compared the incidence of blood glucose imbalance in patients equipped, in a nonrandomized fashion, with either conventional tubing or with a multiport infusion device. METHODS We retrospectively analyzed the nursing files of 35 patients given IIT...

Perfusion studies of the anterior segment of the eye frequently involve an exchange of the contents of the anterior chamber. We here determined how much fluid was necessary to pass through the upstream tubing and anterior chamber such that the contents of the anterior chamber were adequately exchanged. We used fluorescein dextran (500 kD) to assess the adequacy of exchange of enucleated porcine...