The capillary tube — the simplest of refrigerant controls — is the most popular method for metering refrigerant flow from the condenser to the evaporator in compression-type refrigeration systems.
Capillary tubes are generally used as the metering device on small, fractional-horsepower refrigeration systems. Charging these systems with refrigerant requires a different procedure than those ...
OBJECTIVE: To determine if heel warming prior to heelstick increases the volume of blood collected compared to no warming. STUDY DESIGN: Randomized controlled trial involving 100 preterm and term ...
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