The paper presents preliminary results of an experimental study on solar water heater with full width and 75% twisted tapes as heat transfer enhancement device. The study shows that the thermal efficiency due the use of the twisted tape increases by 4.5-8%; higher for the 75% twisted tape. Keyword Solar water heater (collector), tube-in-fin, twisted tape, thermal efficiency, performance enhance...

Nowadays, heat exchangers with twisted-tape inserts have widely been applied for enhancing the convective heat transfer in various industries such as thermal power plants, chemical processing plants, air conditioning equipment, refrigerators, petrochemical, biomedical and food processing plants. In general, twisted tape insert introduces swirl into the bulk flow which consequently disrupts a th...

STUDY DESIGN Randomized, controlled, crossover trial. OBJECTIVES To examine the effects of elastic therapeutic taping (ETT) applied to the lumbar paraspinal region on back muscle endurance (BME) compared to no tape or a rigid therapeutic taping (RTT) procedure in individuals with nonspecific low back pain. BACKGROUND Elastic therapeutic taping is an increasingly popular intervention for cli...

Six hundred horses of different ages, heights and breeds were weighed on a weighbridge and had their weights estimated by two weigh tapes, 1 and 2, by a formula, and by a visual estimate. For the population as a whole, the most accurate method was the formula (mean [sd] 98.6 [10.6] per cent) closely followed by weigh tape 2 (98.1 [8.1] per cent). Tape 1 and the visual estimate were the least ac...

As tape recording density increases, high-frequency track following capability of the tape head actuator becomes more important. This paper details the mechanical design and experimental analysis of a dual state actuator tape head. The dual stage actuator design combines a traditional voice coil motor for low frequency track following with a piezoelectric actuator for high-frequency track follo...

Certain body circumferences, such as the mid-upper arm circumference, are regarded as useful indicators of the nutritional status of children. The insertion tape is designed to reduce errors of measurement, prone to occur with the present tapes. At the widened origin of the new tape is a narrow slot perpendicular to the tape's long axis. The measurer threads the distal end of the tape though th...

I N THE RANDOMIZED, PLACEBO-CONTROLLED TRIAL by de Haen et al that appears in this issue of the ARCHIVES, the application of duct tape is compared with placebo as a treatment for common warts. The investigators recruited 103 children in the Netherlands from primary schools and assessed them for warts. Those with warts were randomized to 1 of 2 groups. One group received duct tape to apply to a ...

When a serpentine tape drive is used as a slow random access device, the I/O performance can be substantially improved by clever re-ordering of the I/O requests. This kind of re-ordering relies on a scheduling algorithm and a model of the access time. In this paper, we propose a low-cost access time model for serpentine tape drives, which is not a trivial task due to the complex data layout of ...

Numerical investigation of the heat transfer and friction factor characteristics of a circular fitted with V-cut twisted tape (VCT) insert with twist ratio (y = 2.93) and different cut depths (w = 0.5, 1, and 1.5 cm) were studied for laminar flow using CFD package (FLUENT-6.3.26). The data obtained from plain tube were verified with the literature correlation to ensure the validation of simulat...